[PATCH 0/7] Tests for sync infrastructure

[PATCH 0/7] Tests for sync infrastructure

[Emilio López]

Hello everyone,

This is a series of tests to exercise the sync kernel infrastructure. It is
meant to be a test suite for the work Gustavo has been doing to destage it.

These tests were originally part of a battery of tests shipping with
Android's libsync that were rewritten to use the new userspace interfaces.

An older version of this set was sent as an RFC series back in March. Now
that the framework has been destaged, I'm resending them with a few
changes - some tests were removed, and some bugs were squashed. See [0]
if you wish to see the the old set.

As usual, all comments are welcome.

Cheers!
Emilio

[0] http://driverdev.linuxdriverproject.org/pipermail/driverdev-devel/2016-March/086932.html

Emilio López (7):
  selftest: sync: basic tests for sw_sync framework
  selftest: sync: fence tests for sw_sync framework
  selftest: sync: merge tests for sw_sync framework
  selftest: sync: wait tests for sw_sync framework
  selftest: sync: stress test for parallelism
  selftest: sync: stress consumer/producer test
  selftest: sync: stress test for merges

 tools/testing/selftests/Makefile                   |   1 +
 tools/testing/selftests/sync/.gitignore            |   1 +
 tools/testing/selftests/sync/Makefile              |  30 +++
 tools/testing/selftests/sync/sw_sync.h             |  46 +++++
 tools/testing/selftests/sync/sync.c                | 222 +++++++++++++++++++++
 tools/testing/selftests/sync/sync.h                |  40 ++++
 tools/testing/selftests/sync/sync_alloc.c          |  74 +++++++
 tools/testing/selftests/sync/sync_fence.c          | 132 ++++++++++++
 tools/testing/selftests/sync/sync_merge.c          |  60 ++++++
 .../testing/selftests/sync/sync_stress_consumer.c  | 185 +++++++++++++++++
 tools/testing/selftests/sync/sync_stress_merge.c   | 116 +++++++++++
 .../selftests/sync/sync_stress_parallelism.c       | 111 +++++++++++
 tools/testing/selftests/sync/sync_test.c           |  79 ++++++++
 tools/testing/selftests/sync/sync_wait.c           |  91 +++++++++
 tools/testing/selftests/sync/synctest.h            |  66 ++++++
 15 files changed, 1254 insertions(+)
 create mode 100644 tools/testing/selftests/sync/.gitignore
 create mode 100644 tools/testing/selftests/sync/Makefile
 create mode 100644 tools/testing/selftests/sync/sw_sync.h
 create mode 100644 tools/testing/selftests/sync/sync.c
 create mode 100644 tools/testing/selftests/sync/sync.h
 create mode 100644 tools/testing/selftests/sync/sync_alloc.c
 create mode 100644 tools/testing/selftests/sync/sync_fence.c
 create mode 100644 tools/testing/selftests/sync/sync_merge.c
 create mode 100644 tools/testing/selftests/sync/sync_stress_consumer.c
 create mode 100644 tools/testing/selftests/sync/sync_stress_merge.c
 create mode 100644 tools/testing/selftests/sync/sync_stress_parallelism.c
 create mode 100644 tools/testing/selftests/sync/sync_test.c
 create mode 100644 tools/testing/selftests/sync/sync_wait.c
 create mode 100644 tools/testing/selftests/sync/synctest.h

-- 
2.9.3

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[PATCH 1/7] selftest: sync: basic tests for sw_sync framework

[Emilio López]

These tests are based on the libsync test suite from Android.
This commit lays the ground for future tests, as well as includes
tests for a variety of basic allocation commands.

Signed-off-by: Emilio López <emilio.lopez@collabora.co.uk>
---
 tools/testing/selftests/Makefile          |   1 +
 tools/testing/selftests/sync/.gitignore   |   1 +
 tools/testing/selftests/sync/Makefile     |  24 ++++
 tools/testing/selftests/sync/sw_sync.h    |  46 +++++++
 tools/testing/selftests/sync/sync.c       | 222 ++++++++++++++++++++++++++++++
 tools/testing/selftests/sync/sync.h       |  40 ++++++
 tools/testing/selftests/sync/sync_alloc.c |  74 ++++++++++
 tools/testing/selftests/sync/sync_test.c  |  71 ++++++++++
 tools/testing/selftests/sync/synctest.h   |  47 +++++++
 9 files changed, 526 insertions(+)
 create mode 100644 tools/testing/selftests/sync/.gitignore
 create mode 100644 tools/testing/selftests/sync/Makefile
 create mode 100644 tools/testing/selftests/sync/sw_sync.h
 create mode 100644 tools/testing/selftests/sync/sync.c
 create mode 100644 tools/testing/selftests/sync/sync.h
 create mode 100644 tools/testing/selftests/sync/sync_alloc.c
 create mode 100644 tools/testing/selftests/sync/sync_test.c
 create mode 100644 tools/testing/selftests/sync/synctest.h

diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile
index ff9e5f2..a72e3c7 100644
--- a/tools/testing/selftests/Makefile
+++ b/tools/testing/selftests/Makefile
@@ -22,6 +22,7 @@ TARGETS += seccomp
 TARGETS += sigaltstack
 TARGETS += size
 TARGETS += static_keys
+TARGETS += sync
 TARGETS += sysctl
 ifneq (1, $(quicktest))
 TARGETS += timers
diff --git a/tools/testing/selftests/sync/.gitignore b/tools/testing/selftests/sync/.gitignore
new file mode 100644
index 0000000..f5091e7
--- /dev/null
+++ b/tools/testing/selftests/sync/.gitignore
@@ -0,0 +1 @@
+sync_test
diff --git a/tools/testing/selftests/sync/Makefile b/tools/testing/selftests/sync/Makefile
new file mode 100644
index 0000000..f67827f
--- /dev/null
+++ b/tools/testing/selftests/sync/Makefile
@@ -0,0 +1,24 @@
+CC = $(CROSS_COMPILE)gcc
+CFLAGS := -O2 -g -std=gnu89 -pthread -Wall -Wextra
+CFLAGS += -I../../../../include/uapi/
+CFLAGS += -I../../../../include/
+CFLAGS += -I../../../../usr/include/
+CFLAGS += -I../../../../drivers/dma-buf/
+LDFLAGS += -pthread
+
+TEST_PROGS = sync_test
+
+all: $(TEST_PROGS)
+
+include ../lib.mk
+
+SRC = sync_test.o sync.o
+
+TESTS += sync_alloc.o
+
+sync_test: $(SRC) $(TESTS)
+
+.PHONY: clean
+
+clean:
+	$(RM) sync_test $(SRC) $(TESTS)
diff --git a/tools/testing/selftests/sync/sw_sync.h b/tools/testing/selftests/sync/sw_sync.h
new file mode 100644
index 0000000..e2cfc6ba
--- /dev/null
+++ b/tools/testing/selftests/sync/sw_sync.h
@@ -0,0 +1,46 @@
+/*
+ *  sw_sync abstraction
+ *
+ *  Copyright 2015-2016 Collabora Ltd.
+ *
+ *  Based on the implementation from the Android Open Source Project,
+ *
+ *  Copyright 2013 Google, Inc
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a
+ *  copy of this software and associated documentation files (the "Software"),
+ *  to deal in the Software without restriction, including without limitation
+ *  the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ *  and/or sell copies of the Software, and to permit persons to whom the
+ *  Software is furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in
+ *  all copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ *  THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ *  OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ *  ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ *  OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef SELFTESTS_SW_SYNC_H
+#define SELFTESTS_SW_SYNC_H
+
+/*
+ * sw_sync is mainly intended for testing and should not be compiled into
+ * production kernels
+ */
+
+int sw_sync_timeline_create(void);
+int sw_sync_timeline_is_valid(int fd);
+int sw_sync_timeline_inc(int fd, unsigned int count);
+void sw_sync_timeline_destroy(int fd);
+
+int sw_sync_fence_create(int fd, const char *name, unsigned int value);
+int sw_sync_fence_is_valid(int fd);
+void sw_sync_fence_destroy(int fd);
+
+#endif
diff --git a/tools/testing/selftests/sync/sync.c b/tools/testing/selftests/sync/sync.c
new file mode 100644
index 0000000..99368be
--- /dev/null
+++ b/tools/testing/selftests/sync/sync.c
@@ -0,0 +1,222 @@
+/*
+ *  sync / sw_sync abstraction
+ *  Copyright 2015-2016 Collabora Ltd.
+ *
+ *  Based on the implementation from the Android Open Source Project,
+ *
+ *  Copyright 2012 Google, Inc
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a
+ *  copy of this software and associated documentation files (the "Software"),
+ *  to deal in the Software without restriction, including without limitation
+ *  the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ *  and/or sell copies of the Software, and to permit persons to whom the
+ *  Software is furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in
+ *  all copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ *  THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ *  OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ *  ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ *  OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include <fcntl.h>
+#include <malloc.h>
+#include <poll.h>
+#include <stdint.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <sys/ioctl.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+
+#include "sync.h"
+#include "sw_sync.h"
+
+#define __EXPORTED_HEADERS__
+#include <uapi/linux/sync_file.h>
+
+
+/* SW_SYNC ioctls */
+struct sw_sync_create_fence_data {
+	__u32	value;
+	char	name[32];
+	__s32	fence;
+};
+
+#define SW_SYNC_IOC_MAGIC		'W'
+#define SW_SYNC_IOC_CREATE_FENCE	_IOWR(SW_SYNC_IOC_MAGIC, 0,\
+					      struct sw_sync_create_fence_data)
+#define SW_SYNC_IOC_INC			_IOW(SW_SYNC_IOC_MAGIC, 1, __u32)
+
+
+int sync_wait(int fd, int timeout)
+{
+	struct pollfd fds;
+
+	fds.fd = fd;
+	fds.events = POLLIN | POLLERR;
+
+	return poll(&fds, 1, timeout);
+}
+
+int sync_merge(const char *name, int fd1, int fd2)
+{
+	struct sync_merge_data data = {};
+	int err;
+
+	data.fd2 = fd2;
+	strncpy(data.name, name, sizeof(data.name) - 1);
+	data.name[sizeof(data.name) - 1] = '\0';
+
+	err = ioctl(fd1, SYNC_IOC_MERGE, &data);
+	if (err < 0)
+		return err;
+
+	return data.fence;
+}
+
+static struct sync_file_info *sync_file_info(int fd)
+{
+	struct sync_file_info *info;
+	struct sync_fence_info *fence_info;
+	int err, num_fences;
+
+	info = calloc(1, sizeof(*info));
+	if (info == NULL)
+		return NULL;
+
+	err = ioctl(fd, SYNC_IOC_FILE_INFO, info);
+	if (err < 0) {
+		free(info);
+		return NULL;
+	}
+
+	num_fences = info->num_fences;
+
+	if (num_fences) {
+		info->flags = 0;
+		info->num_fences = num_fences;
+
+		fence_info = calloc(num_fences, sizeof(*fence_info));
+		if (!fence_info) {
+			free(info);
+			return NULL;
+		}
+
+		info->sync_fence_info = (uint64_t)fence_info;
+
+		err = ioctl(fd, SYNC_IOC_FILE_INFO, info);
+		if (err < 0) {
+			free(fence_info);
+			free(info);
+			return NULL;
+		}
+	}
+
+	return info;
+}
+
+static void sync_file_info_free(struct sync_file_info *info)
+{
+	free((void *)info->sync_fence_info);
+	free(info);
+}
+
+int sync_fence_size(int fd)
+{
+	int count;
+	struct sync_file_info *info = sync_file_info(fd);
+
+	if (!info)
+		return 0;
+
+	count = info->num_fences;
+
+	sync_file_info_free(info);
+
+	return count;
+}
+
+int sync_fence_count_with_status(int fd, int status)
+{
+	unsigned int i, count = 0;
+	struct sync_fence_info *fence_info = NULL;
+	struct sync_file_info *info = sync_file_info(fd);
+
+	if (!info)
+		return -1;
+
+	fence_info = (struct sync_fence_info *)info->sync_fence_info;
+	for (i = 0 ; i < info->num_fences ; i++) {
+		if (fence_info[i].status == status)
+			count++;
+	}
+
+	sync_file_info_free(info);
+
+	return count;
+}
+
+int sw_sync_timeline_create(void)
+{
+	return open("/sys/kernel/debug/sync/sw_sync", O_RDWR);
+}
+
+int sw_sync_timeline_inc(int fd, unsigned int count)
+{
+	__u32 arg = count;
+
+	return ioctl(fd, SW_SYNC_IOC_INC, &arg);
+}
+
+int sw_sync_timeline_is_valid(int fd)
+{
+	int status;
+
+	if (fd == -1)
+		return 0;
+
+	status = fcntl(fd, F_GETFD, 0);
+	return (status >= 0);
+}
+
+void sw_sync_timeline_destroy(int fd)
+{
+	if (sw_sync_timeline_is_valid(fd))
+		close(fd);
+}
+
+int sw_sync_fence_create(int fd, const char *name, unsigned int value)
+{
+	struct sw_sync_create_fence_data data = {};
+	int err;
+
+	data.value = value;
+	strncpy(data.name, name, sizeof(data.name) - 1);
+	data.name[sizeof(data.name) - 1] = '\0';
+
+	err = ioctl(fd, SW_SYNC_IOC_CREATE_FENCE, &data);
+	if (err < 0)
+		return err;
+
+	return data.fence;
+}
+
+int sw_sync_fence_is_valid(int fd)
+{
+	/* Same code! */
+	return sw_sync_timeline_is_valid(fd);
+}
+
+void sw_sync_fence_destroy(int fd)
+{
+	if (sw_sync_fence_is_valid(fd))
+		close(fd);
+}
diff --git a/tools/testing/selftests/sync/sync.h b/tools/testing/selftests/sync/sync.h
new file mode 100644
index 0000000..fb71561
--- /dev/null
+++ b/tools/testing/selftests/sync/sync.h
@@ -0,0 +1,40 @@
+/*
+ *  sync abstraction
+ *  Copyright 2015-2016 Collabora Ltd.
+ *
+ *  Based on the implementation from the Android Open Source Project,
+ *
+ *  Copyright 2012 Google, Inc
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a
+ *  copy of this software and associated documentation files (the "Software"),
+ *  to deal in the Software without restriction, including without limitation
+ *  the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ *  and/or sell copies of the Software, and to permit persons to whom the
+ *  Software is furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in
+ *  all copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ *  THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ *  OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ *  ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ *  OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef SELFTESTS_SYNC_H
+#define SELFTESTS_SYNC_H
+
+#define FENCE_STATUS_ERROR	(-1)
+#define FENCE_STATUS_ACTIVE	(0)
+#define FENCE_STATUS_SIGNALED	(1)
+
+int sync_wait(int fd, int timeout);
+int sync_merge(const char *name, int fd1, int fd2);
+int sync_fence_size(int fd);
+int sync_fence_count_with_status(int fd, int status);
+
+#endif
diff --git a/tools/testing/selftests/sync/sync_alloc.c b/tools/testing/selftests/sync/sync_alloc.c
new file mode 100644
index 0000000..66a28af
--- /dev/null
+++ b/tools/testing/selftests/sync/sync_alloc.c
@@ -0,0 +1,74 @@
+/*
+ *  sync allocation tests
+ *  Copyright 2015-2016 Collabora Ltd.
+ *
+ *  Based on the implementation from the Android Open Source Project,
+ *
+ *  Copyright 2012 Google, Inc
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a
+ *  copy of this software and associated documentation files (the "Software"),
+ *  to deal in the Software without restriction, including without limitation
+ *  the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ *  and/or sell copies of the Software, and to permit persons to whom the
+ *  Software is furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in
+ *  all copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ *  THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ *  OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ *  ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ *  OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include "sync.h"
+#include "sw_sync.h"
+#include "synctest.h"
+
+int test_alloc_timeline(void)
+{
+	int timeline, valid;
+
+	timeline = sw_sync_timeline_create();
+	valid = sw_sync_timeline_is_valid(timeline);
+	ASSERT(valid, "Failure allocating timeline\n");
+
+	sw_sync_timeline_destroy(timeline);
+	return 0;
+}
+
+int test_alloc_fence(void)
+{
+	int timeline, fence, valid;
+
+	timeline = sw_sync_timeline_create();
+	valid = sw_sync_timeline_is_valid(timeline);
+	ASSERT(valid, "Failure allocating timeline\n");
+
+	fence = sw_sync_fence_create(timeline, "allocFence", 1);
+	valid = sw_sync_fence_is_valid(fence);
+	ASSERT(valid, "Failure allocating fence\n");
+
+	sw_sync_fence_destroy(fence);
+	sw_sync_timeline_destroy(timeline);
+	return 0;
+}
+
+int test_alloc_fence_negative(void)
+{
+	int fence, timeline;
+
+	timeline = sw_sync_timeline_create();
+	ASSERT(timeline > 0, "Failure allocating timeline\n");
+
+	fence = sw_sync_fence_create(-1, "fence", 1);
+	ASSERT(fence < 0, "Success allocating negative fence\n");
+
+	sw_sync_fence_destroy(fence);
+	sw_sync_timeline_destroy(timeline);
+	return 0;
+}
diff --git a/tools/testing/selftests/sync/sync_test.c b/tools/testing/selftests/sync/sync_test.c
new file mode 100644
index 0000000..e471ba9
--- /dev/null
+++ b/tools/testing/selftests/sync/sync_test.c
@@ -0,0 +1,71 @@
+/*
+ *  sync test runner
+ *  Copyright 2015-2016 Collabora Ltd.
+ *
+ *  Based on the implementation from the Android Open Source Project,
+ *
+ *  Copyright 2012 Google, Inc
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a
+ *  copy of this software and associated documentation files (the "Software"),
+ *  to deal in the Software without restriction, including without limitation
+ *  the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ *  and/or sell copies of the Software, and to permit persons to whom the
+ *  Software is furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in
+ *  all copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ *  THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ *  OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ *  ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ *  OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+
+#include "synctest.h"
+
+static int run_test(int (*test)(void), char *name)
+{
+	int result;
+	pid_t childpid;
+
+	fflush(stdout);
+	childpid = fork();
+
+	if (childpid) {
+		waitpid(childpid, &result, 0);
+		if (WIFEXITED(result))
+			return WEXITSTATUS(result);
+		return 1;
+	}
+
+	printf("[RUN]\tExecuting %s\n", name);
+	exit(test());
+}
+
+int main(void)
+{
+	int err = 0;
+
+	printf("[RUN]\tTesting sync framework\n");
+
+	err += RUN_TEST(test_alloc_timeline);
+	err += RUN_TEST(test_alloc_fence);
+	err += RUN_TEST(test_alloc_fence_negative);
+
+	if (err)
+		printf("[FAIL]\tsync errors: %d\n", err);
+	else
+		printf("[OK]\tsync\n");
+
+	return !!err;
+}
diff --git a/tools/testing/selftests/sync/synctest.h b/tools/testing/selftests/sync/synctest.h
new file mode 100644
index 0000000..7d2d8ce
--- /dev/null
+++ b/tools/testing/selftests/sync/synctest.h
@@ -0,0 +1,47 @@
+/*
+ *  sync tests
+ *  Copyright 2015-2016 Collabora Ltd.
+ *
+ *  Based on the implementation from the Android Open Source Project,
+ *
+ *  Copyright 2012 Google, Inc
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a
+ *  copy of this software and associated documentation files (the "Software"),
+ *  to deal in the Software without restriction, including without limitation
+ *  the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ *  and/or sell copies of the Software, and to permit persons to whom the
+ *  Software is furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in
+ *  all copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ *  THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ *  OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ *  ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ *  OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef SELFTESTS_SYNCTEST_H
+#define SELFTESTS_SYNCTEST_H
+
+#include <stdio.h>
+
+#define ASSERT(cond, msg) do { \
+	if (!(cond)) { \
+		printf("[BAD]\t%s", (msg)); \
+		return 1; \
+	} \
+} while (0)
+
+#define RUN_TEST(x) run_test((x), #x)
+
+/* Allocation tests */
+int test_alloc_timeline(void);
+int test_alloc_fence(void);
+int test_alloc_fence_negative(void);
+
+#endif
-- 
2.9.3

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Re: [PATCH 1/7] selftest: sync: basic tests for sw_sync framework

[Michael Ellerman]

Emilio López <emilio.lopez@collabora.co.uk> writes:

> These tests are based on the libsync test suite from Android.
> This commit lays the ground for future tests, as well as includes
> tests for a variety of basic allocation commands.

Hi Emilio,

Just a few comments on the Makefile.

> diff --git a/tools/testing/selftests/sync/Makefile b/tools/testing/selftests/sync/Makefile
> new file mode 100644
> index 0000000..f67827f
> --- /dev/null
> +++ b/tools/testing/selftests/sync/Makefile
> @@ -0,0 +1,24 @@
> +CC = $(CROSS_COMPILE)gcc

lib.mk does that for you.

> +CFLAGS := -O2 -g -std=gnu89 -pthread -Wall -Wextra

It's more polite to just add to CFLAGS rather than defining it from
scratch. That way a user can add CFLAGS via setting them in the
environment.

ie. this would be:

CFLAGS += -O2 -g -std=gnu89 -pthread -Wall -Wextra

or:

CFLAGS := -O2 -g -std=gnu89 -pthread -Wall -Wextra $(CFLAGS)


> +CFLAGS += -I../../../../include/uapi/

Please don't include the unprocessed uapi headers, they are not meant to
be directly included in userspace programs.

They even say so:

include/uapi/linux/types.h:#warning "Attempt to use kernel headers from user space, see http://kernelnewbies.org/KernelHeaders"

> +CFLAGS += -I../../../../include/

Please don't include the *kernel* headers, they're really not meant to
be used in userspace programs :)

> +CFLAGS += -I../../../../usr/include/

That is the correct place to get them from. They'll have been put there
by 'make headers_install'.

> +CFLAGS += -I../../../../drivers/dma-buf/

That's also a bit fishy.

> +LDFLAGS += -pthread
> +
> +TEST_PROGS = sync_test
> +
> +all: $(TEST_PROGS)
> +
> +include ../lib.mk
> +
> +SRC = sync_test.o sync.o

SRC would usually point to .c files, .o's would be in OBJS or something
similar. Though it's not that important obviously.

Just listing the .c files in SRC should work, make knows how to turn
them into .o's for you.

> +TESTS += sync_alloc.o

And similarly there.

So I think you could just use:

SRC := sync_test.c sync.c sync_alloc.c

Or if you actually just want to list all the .c files in the directory
then this would also work:

SRC := $(wildcard *.c)

> +sync_test: $(SRC) $(TESTS)
> +
> +.PHONY: clean

lib.mk did that for you.

> +
> +clean:
> +	$(RM) sync_test $(SRC) $(TESTS)

If you redefined SRC above to be the actual sources then you obviously
don't want to clean them, so here you would just use *.o.

cheers

Re: [PATCH 1/7] selftest: sync: basic tests for sw_sync framework

[Emilio López]

Hi Michael,

El 22/09/16 a las 06:43, Michael Ellerman escribió:
> Emilio López <emilio.lopez@collabora.co.uk> writes:
>> +CFLAGS += -I../../../../include/uapi/
>
> Please don't include the unprocessed uapi headers, they are not meant to
> be directly included in userspace programs.
>
> They even say so:
>
> include/uapi/linux/types.h:#warning "Attempt to use kernel headers from user space, see http://kernelnewbies.org/KernelHeaders"
>
>> +CFLAGS += -I../../../../include/
>
> Please don't include the *kernel* headers, they're really not meant to
> be used in userspace programs :)
>
>> +CFLAGS += -I../../../../usr/include/
>
> That is the correct place to get them from. They'll have been put there
> by 'make headers_install'.
>
>> +CFLAGS += -I../../../../drivers/dma-buf/
>
> That's also a bit fishy.

My inspiration here has been tools/testing/selftests/memfd/Makefile, 
which does it this way. If I only include the ones on usr then it 
doesn't build, as there's no sync_file.h available, even after running 
make headers_install. How am I supposed to use the ioctls from there?

The dma-buf include path is a leftover from the previous version, 
there's no longer any headers there. I've fixed the other things you 
pointed out, the new Makefile is below if you want to take another look.

Thanks for the review! :)
Emilio

---

CFLAGS += -O2 -g -std=gnu89 -pthread -Wall -Wextra
CFLAGS += -I../../../../usr/include/
LDFLAGS += -pthread

TEST_PROGS = sync_test

all: $(TEST_PROGS)

include ../lib.mk

OBJS = sync_test.o sync.o

TESTS += sync_alloc.o
TESTS += sync_fence.o
TESTS += sync_merge.o
TESTS += sync_wait.o
TESTS += sync_stress_parallelism.o
TESTS += sync_stress_consumer.o
TESTS += sync_stress_merge.o

sync_test: $(OBJS) $(TESTS)

clean:
	$(RM) sync_test $(OBJS) $(TESTS)
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Re: [PATCH 1/7] selftest: sync: basic tests for sw_sync framework

[Michael Ellerman]

Emilio López <emilio.lopez@collabora.co.uk> writes:
> El 22/09/16 a las 06:43, Michael Ellerman escribió:
>> Emilio López <emilio.lopez@collabora.co.uk> writes:
>>
>> Please don't include the *kernel* headers, they're really not meant to
>> be used in userspace programs :)
>>
>>> +CFLAGS += -I../../../../usr/include/
>>
>> That is the correct place to get them from. They'll have been put there
>> by 'make headers_install'.
>
> My inspiration here has been tools/testing/selftests/memfd/Makefile, 
> which does it this way. If I only include the ones on usr then it 
> doesn't build, as there's no sync_file.h available, even after running 
> make headers_install. How am I supposed to use the ioctls from there?

It looks like it's missing from include/uapi/linux/Kbuild, you need to
add it to the list of exported headers:

diff --git a/include/uapi/linux/Kbuild b/include/uapi/linux/Kbuild
index dd604395606b..40411b4ff012 100644
--- a/include/uapi/linux/Kbuild
+++ b/include/uapi/linux/Kbuild
@@ -397,6 +397,7 @@ header-y += stddef.h
 header-y += string.h
 header-y += suspend_ioctls.h
 header-y += swab.h
+header-y += sync_file.h
 header-y += synclink.h
 header-y += sysctl.h
 header-y += sysinfo.h


cheers
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Re: [PATCH 1/7] selftest: sync: basic tests for sw_sync framework

[Emilio López]

Hi,

El 27/09/16 a las 01:23, Michael Ellerman escribió:
> Emilio López <emilio.lopez@collabora.co.uk> writes:
>> El 22/09/16 a las 06:43, Michael Ellerman escribió:
>>> Emilio López <emilio.lopez@collabora.co.uk> writes:
>>>
>>> Please don't include the *kernel* headers, they're really not meant to
>>> be used in userspace programs :)
>>>
>>>> +CFLAGS += -I../../../../usr/include/
>>>
>>> That is the correct place to get them from. They'll have been put there
>>> by 'make headers_install'.
>>
>> My inspiration here has been tools/testing/selftests/memfd/Makefile,
>> which does it this way. If I only include the ones on usr then it
>> doesn't build, as there's no sync_file.h available, even after running
>> make headers_install. How am I supposed to use the ioctls from there?
>
> It looks like it's missing from include/uapi/linux/Kbuild, you need to
> add it to the list of exported headers:

I tried that over the weekend and it worked, but I wondered if it was 
the way to go. Thanks for the confirmation :) I've sent a patch for 
that[0] now.

With that resolved, CFLAGS can just be

CFLAGS += -O2 -g -std=gnu89 -pthread -Wall -Wextra
CFLAGS += -I../../../../usr/include/

I'll wait a bit more to see if anyone else has any comments, otherwise 
I'll send a v2 in a couple of days.

Thanks!
Emilio

[0] https://lkml.org/lkml/2016/9/27/289
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Re: [PATCH 1/7] selftest: sync: basic tests for sw_sync framework

[Michael Ellerman]

Emilio López <emilio.lopez@collabora.co.uk> writes:

> Hi,
>
> El 27/09/16 a las 01:23, Michael Ellerman escribió:
>> Emilio López <emilio.lopez@collabora.co.uk> writes:
>>> El 22/09/16 a las 06:43, Michael Ellerman escribió:
>>>> Emilio López <emilio.lopez@collabora.co.uk> writes:
>>>>
>>>> Please don't include the *kernel* headers, they're really not meant to
>>>> be used in userspace programs :)
>>>>
>>>>> +CFLAGS += -I../../../../usr/include/
>>>>
>>>> That is the correct place to get them from. They'll have been put there
>>>> by 'make headers_install'.
>>>
>>> My inspiration here has been tools/testing/selftests/memfd/Makefile,
>>> which does it this way. If I only include the ones on usr then it
>>> doesn't build, as there's no sync_file.h available, even after running
>>> make headers_install. How am I supposed to use the ioctls from there?
>>
>> It looks like it's missing from include/uapi/linux/Kbuild, you need to
>> add it to the list of exported headers:
>
> I tried that over the weekend and it worked, but I wondered if it was 
> the way to go. Thanks for the confirmation :) I've sent a patch for 
> that[0] now.

Great thanks.

> With that resolved, CFLAGS can just be
>
> CFLAGS += -O2 -g -std=gnu89 -pthread -Wall -Wextra
> CFLAGS += -I../../../../usr/include/

LGTM.

cheers
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[PATCH 2/7] selftest: sync: fence tests for sw_sync framework

[Emilio López]

These tests are based on the libsync test suite from Android.
This commit includes tests for basic fence creation.

Signed-off-by: Emilio López <emilio.lopez@collabora.co.uk>
---
 tools/testing/selftests/sync/Makefile     |   1 +
 tools/testing/selftests/sync/sync_fence.c | 132 ++++++++++++++++++++++++++++++
 tools/testing/selftests/sync/sync_test.c  |   3 +
 tools/testing/selftests/sync/synctest.h   |   4 +
 4 files changed, 140 insertions(+)
 create mode 100644 tools/testing/selftests/sync/sync_fence.c

diff --git a/tools/testing/selftests/sync/Makefile b/tools/testing/selftests/sync/Makefile
index f67827f..2bba52e 100644
--- a/tools/testing/selftests/sync/Makefile
+++ b/tools/testing/selftests/sync/Makefile
@@ -15,6 +15,7 @@ include ../lib.mk
 SRC = sync_test.o sync.o
 
 TESTS += sync_alloc.o
+TESTS += sync_fence.o
 
 sync_test: $(SRC) $(TESTS)
 
diff --git a/tools/testing/selftests/sync/sync_fence.c b/tools/testing/selftests/sync/sync_fence.c
new file mode 100644
index 0000000..13f1752
--- /dev/null
+++ b/tools/testing/selftests/sync/sync_fence.c
@@ -0,0 +1,132 @@
+/*
+ *  sync fence tests with one timeline
+ *  Copyright 2015-2016 Collabora Ltd.
+ *
+ *  Based on the implementation from the Android Open Source Project,
+ *
+ *  Copyright 2012 Google, Inc
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a
+ *  copy of this software and associated documentation files (the "Software"),
+ *  to deal in the Software without restriction, including without limitation
+ *  the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ *  and/or sell copies of the Software, and to permit persons to whom the
+ *  Software is furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in
+ *  all copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ *  THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ *  OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ *  ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ *  OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include "sync.h"
+#include "sw_sync.h"
+#include "synctest.h"
+
+int test_fence_one_timeline_wait(void)
+{
+	int fence, valid, ret;
+	int timeline = sw_sync_timeline_create();
+
+	valid = sw_sync_timeline_is_valid(timeline);
+	ASSERT(valid, "Failure allocating timeline\n");
+
+	fence = sw_sync_fence_create(timeline, "allocFence", 5);
+	valid = sw_sync_fence_is_valid(fence);
+	ASSERT(valid, "Failure allocating fence\n");
+
+	/* Wait on fence until timeout */
+	ret = sync_wait(fence, 0);
+	ASSERT(ret == 0, "Failure waiting on fence until timeout\n");
+
+	/* Advance timeline from 0 -> 1 */
+	ret = sw_sync_timeline_inc(timeline, 1);
+	ASSERT(ret == 0, "Failure advancing timeline\n");
+
+	/* Wait on fence until timeout */
+	ret = sync_wait(fence, 0);
+	ASSERT(ret == 0, "Failure waiting on fence until timeout\n");
+
+	/* Signal the fence */
+	ret = sw_sync_timeline_inc(timeline, 4);
+	ASSERT(ret == 0, "Failure signaling the fence\n");
+
+	/* Wait successfully */
+	ret = sync_wait(fence, 0);
+	ASSERT(ret > 0, "Failure waiting on fence\n");
+
+	/* Go even further, and confirm wait still succeeds */
+	ret = sw_sync_timeline_inc(timeline, 10);
+	ASSERT(ret == 0, "Failure going further\n");
+	ret = sync_wait(fence, 0);
+	ASSERT(ret > 0, "Failure waiting ahead\n");
+
+	sw_sync_fence_destroy(fence);
+	sw_sync_timeline_destroy(timeline);
+
+	return 0;
+}
+
+int test_fence_one_timeline_merge(void)
+{
+	int a, b, c, d, valid;
+	int timeline = sw_sync_timeline_create();
+
+	/* create fence a,b,c and then merge them all into fence d */
+	a = sw_sync_fence_create(timeline, "allocFence", 1);
+	b = sw_sync_fence_create(timeline, "allocFence", 2);
+	c = sw_sync_fence_create(timeline, "allocFence", 3);
+
+	valid = sw_sync_fence_is_valid(a) &&
+		sw_sync_fence_is_valid(b) &&
+		sw_sync_fence_is_valid(c);
+	ASSERT(valid, "Failure allocating fences\n");
+
+	d = sync_merge("mergeFence", b, a);
+	d = sync_merge("mergeFence", c, d);
+	valid = sw_sync_fence_is_valid(d);
+	ASSERT(valid, "Failure merging fences\n");
+
+	/* confirm all fences have one active point (even d) */
+	ASSERT(sync_fence_count_with_status(a, FENCE_STATUS_ACTIVE) == 1,
+	       "a has too many active fences!\n");
+	ASSERT(sync_fence_count_with_status(a, FENCE_STATUS_ACTIVE) == 1,
+	       "b has too many active fences!\n");
+	ASSERT(sync_fence_count_with_status(a, FENCE_STATUS_ACTIVE) == 1,
+	       "c has too many active fences!\n");
+	ASSERT(sync_fence_count_with_status(a, FENCE_STATUS_ACTIVE) == 1,
+	       "d has too many active fences!\n");
+
+	/* confirm that d is not signaled until the max of a,b,c */
+	sw_sync_timeline_inc(timeline, 1);
+	ASSERT(sync_fence_count_with_status(a, FENCE_STATUS_SIGNALED) == 1,
+	       "a did not signal!\n");
+	ASSERT(sync_fence_count_with_status(d, FENCE_STATUS_ACTIVE) == 1,
+	       "d signaled too early!\n");
+
+	sw_sync_timeline_inc(timeline, 1);
+	ASSERT(sync_fence_count_with_status(b, FENCE_STATUS_SIGNALED) == 1,
+	       "b did not signal!\n");
+	ASSERT(sync_fence_count_with_status(d, FENCE_STATUS_ACTIVE) == 1,
+	       "d signaled too early!\n");
+
+	sw_sync_timeline_inc(timeline, 1);
+	ASSERT(sync_fence_count_with_status(c, FENCE_STATUS_SIGNALED) == 1,
+	       "c did not signal!\n");
+	ASSERT(sync_fence_count_with_status(d, FENCE_STATUS_ACTIVE) == 0 &&
+	       sync_fence_count_with_status(d, FENCE_STATUS_SIGNALED) == 1,
+	       "d did not signal!\n");
+
+	sw_sync_fence_destroy(d);
+	sw_sync_fence_destroy(c);
+	sw_sync_fence_destroy(b);
+	sw_sync_fence_destroy(a);
+	sw_sync_timeline_destroy(timeline);
+	return 0;
+}
diff --git a/tools/testing/selftests/sync/sync_test.c b/tools/testing/selftests/sync/sync_test.c
index e471ba9..b442292b 100644
--- a/tools/testing/selftests/sync/sync_test.c
+++ b/tools/testing/selftests/sync/sync_test.c
@@ -62,6 +62,9 @@ int main(void)
 	err += RUN_TEST(test_alloc_fence);
 	err += RUN_TEST(test_alloc_fence_negative);
 
+	err += RUN_TEST(test_fence_one_timeline_wait);
+	err += RUN_TEST(test_fence_one_timeline_merge);
+
 	if (err)
 		printf("[FAIL]\tsync errors: %d\n", err);
 	else
diff --git a/tools/testing/selftests/sync/synctest.h b/tools/testing/selftests/sync/synctest.h
index 7d2d8ce..6505c28 100644
--- a/tools/testing/selftests/sync/synctest.h
+++ b/tools/testing/selftests/sync/synctest.h
@@ -44,4 +44,8 @@ int test_alloc_timeline(void);
 int test_alloc_fence(void);
 int test_alloc_fence_negative(void);
 
+/* Fence tests with one timeline */
+int test_fence_one_timeline_wait(void);
+int test_fence_one_timeline_merge(void);
+
 #endif
-- 
2.9.3

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[PATCH 3/7] selftest: sync: merge tests for sw_sync framework

[Emilio López]

These tests are based on the libsync test suite from Android.
This commit includes tests for basic merge operations.

Signed-off-by: Emilio López <emilio.lopez@collabora.co.uk>
---
 tools/testing/selftests/sync/Makefile     |  1 +
 tools/testing/selftests/sync/sync_merge.c | 60 +++++++++++++++++++++++++++++++
 tools/testing/selftests/sync/sync_test.c  |  1 +
 tools/testing/selftests/sync/synctest.h   |  3 ++
 4 files changed, 65 insertions(+)
 create mode 100644 tools/testing/selftests/sync/sync_merge.c

diff --git a/tools/testing/selftests/sync/Makefile b/tools/testing/selftests/sync/Makefile
index 2bba52e..53b716f 100644
--- a/tools/testing/selftests/sync/Makefile
+++ b/tools/testing/selftests/sync/Makefile
@@ -16,6 +16,7 @@ SRC = sync_test.o sync.o
 
 TESTS += sync_alloc.o
 TESTS += sync_fence.o
+TESTS += sync_merge.o
 
 sync_test: $(SRC) $(TESTS)
 
diff --git a/tools/testing/selftests/sync/sync_merge.c b/tools/testing/selftests/sync/sync_merge.c
new file mode 100644
index 0000000..8914d43
--- /dev/null
+++ b/tools/testing/selftests/sync/sync_merge.c
@@ -0,0 +1,60 @@
+/*
+ *  sync fence merge tests
+ *  Copyright 2015-2016 Collabora Ltd.
+ *
+ *  Based on the implementation from the Android Open Source Project,
+ *
+ *  Copyright 2012 Google, Inc
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a
+ *  copy of this software and associated documentation files (the "Software"),
+ *  to deal in the Software without restriction, including without limitation
+ *  the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ *  and/or sell copies of the Software, and to permit persons to whom the
+ *  Software is furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in
+ *  all copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ *  THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ *  OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ *  ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ *  OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include "sync.h"
+#include "sw_sync.h"
+#include "synctest.h"
+
+int test_fence_merge_same_fence(void)
+{
+	int fence, valid, merged;
+	int timeline = sw_sync_timeline_create();
+
+	valid = sw_sync_timeline_is_valid(timeline);
+	ASSERT(valid, "Failure allocating timeline\n");
+
+	fence = sw_sync_fence_create(timeline, "allocFence", 5);
+	valid = sw_sync_fence_is_valid(fence);
+	ASSERT(valid, "Failure allocating fence\n");
+
+	merged = sync_merge("mergeFence", fence, fence);
+	valid = sw_sync_fence_is_valid(fence);
+	ASSERT(valid, "Failure merging fence\n");
+
+	ASSERT(sync_fence_count_with_status(merged, FENCE_STATUS_SIGNALED) == 0,
+	       "fence signaled too early!\n");
+
+	sw_sync_timeline_inc(timeline, 5);
+	ASSERT(sync_fence_count_with_status(merged, FENCE_STATUS_SIGNALED) == 1,
+	       "fence did not signal!\n");
+
+	sw_sync_fence_destroy(merged);
+	sw_sync_fence_destroy(fence);
+	sw_sync_timeline_destroy(timeline);
+
+	return 0;
+}
diff --git a/tools/testing/selftests/sync/sync_test.c b/tools/testing/selftests/sync/sync_test.c
index b442292b..ab37eee 100644
--- a/tools/testing/selftests/sync/sync_test.c
+++ b/tools/testing/selftests/sync/sync_test.c
@@ -64,6 +64,7 @@ int main(void)
 
 	err += RUN_TEST(test_fence_one_timeline_wait);
 	err += RUN_TEST(test_fence_one_timeline_merge);
+	err += RUN_TEST(test_fence_merge_same_fence);
 
 	if (err)
 		printf("[FAIL]\tsync errors: %d\n", err);
diff --git a/tools/testing/selftests/sync/synctest.h b/tools/testing/selftests/sync/synctest.h
index 6505c28..c3b0b5e 100644
--- a/tools/testing/selftests/sync/synctest.h
+++ b/tools/testing/selftests/sync/synctest.h
@@ -48,4 +48,7 @@ int test_alloc_fence_negative(void);
 int test_fence_one_timeline_wait(void);
 int test_fence_one_timeline_merge(void);
 
+/* Fence merge tests */
+int test_fence_merge_same_fence(void);
+
 #endif
-- 
2.9.3

[PATCH 4/7] selftest: sync: wait tests for sw_sync framework

[Emilio López]

These tests are based on the libsync test suite from Android.
This commit includes tests for waiting on fences.

Signed-off-by: Emilio López <emilio.lopez@collabora.co.uk>
---
 tools/testing/selftests/sync/Makefile    |  1 +
 tools/testing/selftests/sync/sync_test.c |  1 +
 tools/testing/selftests/sync/sync_wait.c | 91 ++++++++++++++++++++++++++++++++
 tools/testing/selftests/sync/synctest.h  |  3 ++
 4 files changed, 96 insertions(+)
 create mode 100644 tools/testing/selftests/sync/sync_wait.c

diff --git a/tools/testing/selftests/sync/Makefile b/tools/testing/selftests/sync/Makefile
index 53b716f..19731b9 100644
--- a/tools/testing/selftests/sync/Makefile
+++ b/tools/testing/selftests/sync/Makefile
@@ -17,6 +17,7 @@ SRC = sync_test.o sync.o
 TESTS += sync_alloc.o
 TESTS += sync_fence.o
 TESTS += sync_merge.o
+TESTS += sync_wait.o
 
 sync_test: $(SRC) $(TESTS)
 
diff --git a/tools/testing/selftests/sync/sync_test.c b/tools/testing/selftests/sync/sync_test.c
index ab37eee..eab5ceb 100644
--- a/tools/testing/selftests/sync/sync_test.c
+++ b/tools/testing/selftests/sync/sync_test.c
@@ -65,6 +65,7 @@ int main(void)
 	err += RUN_TEST(test_fence_one_timeline_wait);
 	err += RUN_TEST(test_fence_one_timeline_merge);
 	err += RUN_TEST(test_fence_merge_same_fence);
+	err += RUN_TEST(test_fence_multi_timeline_wait);
 
 	if (err)
 		printf("[FAIL]\tsync errors: %d\n", err);
diff --git a/tools/testing/selftests/sync/sync_wait.c b/tools/testing/selftests/sync/sync_wait.c
new file mode 100644
index 0000000..d69b752
--- /dev/null
+++ b/tools/testing/selftests/sync/sync_wait.c
@@ -0,0 +1,91 @@
+/*
+ *  sync fence wait tests
+ *  Copyright 2015-2016 Collabora Ltd.
+ *
+ *  Based on the implementation from the Android Open Source Project,
+ *
+ *  Copyright 2012 Google, Inc
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a
+ *  copy of this software and associated documentation files (the "Software"),
+ *  to deal in the Software without restriction, including without limitation
+ *  the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ *  and/or sell copies of the Software, and to permit persons to whom the
+ *  Software is furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in
+ *  all copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ *  THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ *  OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ *  ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ *  OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include "sync.h"
+#include "sw_sync.h"
+#include "synctest.h"
+
+int test_fence_multi_timeline_wait(void)
+{
+	int timelineA, timelineB, timelineC;
+	int fenceA, fenceB, fenceC, merged;
+	int valid, active, signaled, ret;
+
+	timelineA = sw_sync_timeline_create();
+	timelineB = sw_sync_timeline_create();
+	timelineC = sw_sync_timeline_create();
+
+	fenceA = sw_sync_fence_create(timelineA, "fenceA", 5);
+	fenceB = sw_sync_fence_create(timelineB, "fenceB", 5);
+	fenceC = sw_sync_fence_create(timelineC, "fenceC", 5);
+
+	merged = sync_merge("mergeFence", fenceB, fenceA);
+	merged = sync_merge("mergeFence", fenceC, merged);
+
+	valid = sw_sync_fence_is_valid(merged);
+	ASSERT(valid, "Failure merging fence from various timelines\n");
+
+	/* Confirm fence isn't signaled */
+	active = sync_fence_count_with_status(merged, FENCE_STATUS_ACTIVE);
+	ASSERT(active == 3, "Fence signaled too early!\n");
+
+	ret = sync_wait(merged, 0);
+	ASSERT(ret == 0,
+	       "Failure waiting on fence until timeout\n");
+
+	ret = sw_sync_timeline_inc(timelineA, 5);
+	active = sync_fence_count_with_status(merged, FENCE_STATUS_ACTIVE);
+	signaled = sync_fence_count_with_status(merged, FENCE_STATUS_SIGNALED);
+	ASSERT(active == 2 && signaled == 1,
+	       "Fence did not signal properly!\n");
+
+	ret = sw_sync_timeline_inc(timelineB, 5);
+	active = sync_fence_count_with_status(merged, FENCE_STATUS_ACTIVE);
+	signaled = sync_fence_count_with_status(merged, FENCE_STATUS_SIGNALED);
+	ASSERT(active == 1 && signaled == 2,
+	       "Fence did not signal properly!\n");
+
+	ret = sw_sync_timeline_inc(timelineC, 5);
+	active = sync_fence_count_with_status(merged, FENCE_STATUS_ACTIVE);
+	signaled = sync_fence_count_with_status(merged, FENCE_STATUS_SIGNALED);
+	ASSERT(active == 0 && signaled == 3,
+	       "Fence did not signal properly!\n");
+
+	/* confirm you can successfully wait */
+	ret = sync_wait(merged, 100);
+	ASSERT(ret > 0, "Failure waiting on signaled fence\n");
+
+	sw_sync_fence_destroy(merged);
+	sw_sync_fence_destroy(fenceC);
+	sw_sync_fence_destroy(fenceB);
+	sw_sync_fence_destroy(fenceA);
+	sw_sync_timeline_destroy(timelineC);
+	sw_sync_timeline_destroy(timelineB);
+	sw_sync_timeline_destroy(timelineA);
+
+	return 0;
+}
diff --git a/tools/testing/selftests/sync/synctest.h b/tools/testing/selftests/sync/synctest.h
index c3b0b5e..0fad57d 100644
--- a/tools/testing/selftests/sync/synctest.h
+++ b/tools/testing/selftests/sync/synctest.h
@@ -51,4 +51,7 @@ int test_fence_one_timeline_merge(void);
 /* Fence merge tests */
 int test_fence_merge_same_fence(void);
 
+/* Fence wait tests */
+int test_fence_multi_timeline_wait(void);
+
 #endif
-- 
2.9.3

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[PATCH 5/7] selftest: sync: stress test for parallelism

[Emilio López]

This test is based on the libsync test suite from Android.
This commit includes a stress test that invokes operations
in parallel.

Signed-off-by: Emilio López <emilio.lopez@collabora.co.uk>
---
 tools/testing/selftests/sync/Makefile              |   1 +
 .../selftests/sync/sync_stress_parallelism.c       | 111 +++++++++++++++++++++
 tools/testing/selftests/sync/sync_test.c           |   1 +
 tools/testing/selftests/sync/synctest.h            |   3 +
 4 files changed, 116 insertions(+)
 create mode 100644 tools/testing/selftests/sync/sync_stress_parallelism.c

diff --git a/tools/testing/selftests/sync/Makefile b/tools/testing/selftests/sync/Makefile
index 19731b9..1ed2864 100644
--- a/tools/testing/selftests/sync/Makefile
+++ b/tools/testing/selftests/sync/Makefile
@@ -18,6 +18,7 @@ TESTS += sync_alloc.o
 TESTS += sync_fence.o
 TESTS += sync_merge.o
 TESTS += sync_wait.o
+TESTS += sync_stress_parallelism.o
 
 sync_test: $(SRC) $(TESTS)
 
diff --git a/tools/testing/selftests/sync/sync_stress_parallelism.c b/tools/testing/selftests/sync/sync_stress_parallelism.c
new file mode 100644
index 0000000..e6c9be6
--- /dev/null
+++ b/tools/testing/selftests/sync/sync_stress_parallelism.c
@@ -0,0 +1,111 @@
+/*
+ *  sync stress test: parallelism
+ *  Copyright 2015-2016 Collabora Ltd.
+ *
+ *  Based on the implementation from the Android Open Source Project,
+ *
+ *  Copyright 2012 Google, Inc
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a
+ *  copy of this software and associated documentation files (the "Software"),
+ *  to deal in the Software without restriction, including without limitation
+ *  the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ *  and/or sell copies of the Software, and to permit persons to whom the
+ *  Software is furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in
+ *  all copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ *  THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ *  OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ *  ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ *  OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include <pthread.h>
+
+#include "sync.h"
+#include "sw_sync.h"
+#include "synctest.h"
+
+static struct {
+	int iterations;
+	int timeline;
+	int counter;
+} test_data_two_threads;
+
+static int test_stress_two_threads_shared_timeline_thread(void *d)
+{
+	int thread_id = (long)d;
+	int timeline = test_data_two_threads.timeline;
+	int iterations = test_data_two_threads.iterations;
+	int fence, valid, ret, i;
+
+	for (i = 0; i < iterations; i++) {
+		fence = sw_sync_fence_create(timeline, "fence",
+					     i * 2 + thread_id);
+		valid = sw_sync_fence_is_valid(fence);
+		ASSERT(valid, "Failure allocating fence\n");
+
+		/* Wait on the prior thread to complete */
+		ret = sync_wait(fence, -1);
+		ASSERT(ret > 0, "Problem occurred on prior thread\n");
+
+		/*
+		 * Confirm the previous thread's writes are visible
+		 * and then increment
+		 */
+		ASSERT(test_data_two_threads.counter == i * 2 + thread_id,
+		       "Counter got damaged!\n");
+		test_data_two_threads.counter++;
+
+		/* Kick off the other thread */
+		ret = sw_sync_timeline_inc(timeline, 1);
+		ASSERT(ret == 0, "Advancing timeline failed\n");
+
+		sw_sync_fence_destroy(fence);
+	}
+
+	return 0;
+}
+
+int test_stress_two_threads_shared_timeline(void)
+{
+	pthread_t a, b;
+	int valid;
+	int timeline = sw_sync_timeline_create();
+
+	valid = sw_sync_timeline_is_valid(timeline);
+	ASSERT(valid, "Failure allocating timeline\n");
+
+	test_data_two_threads.iterations = 1 << 16;
+	test_data_two_threads.counter = 0;
+	test_data_two_threads.timeline = timeline;
+
+	/*
+	 * Use a single timeline to synchronize two threads
+	 * hammmering on the same counter.
+	 */
+
+	pthread_create(&a, NULL, (void *(*)(void *))
+		       test_stress_two_threads_shared_timeline_thread,
+		       (void *)0);
+	pthread_create(&b, NULL, (void *(*)(void *))
+		       test_stress_two_threads_shared_timeline_thread,
+		       (void *)1);
+
+	pthread_join(a, NULL);
+	pthread_join(b, NULL);
+
+	/* make sure the threads did not trample on one another */
+	ASSERT(test_data_two_threads.counter ==
+	       test_data_two_threads.iterations * 2,
+	       "Counter has unexpected value\n");
+
+	sw_sync_timeline_destroy(timeline);
+
+	return 0;
+}
diff --git a/tools/testing/selftests/sync/sync_test.c b/tools/testing/selftests/sync/sync_test.c
index eab5ceb..3bb1024 100644
--- a/tools/testing/selftests/sync/sync_test.c
+++ b/tools/testing/selftests/sync/sync_test.c
@@ -66,6 +66,7 @@ int main(void)
 	err += RUN_TEST(test_fence_one_timeline_merge);
 	err += RUN_TEST(test_fence_merge_same_fence);
 	err += RUN_TEST(test_fence_multi_timeline_wait);
+	err += RUN_TEST(test_stress_two_threads_shared_timeline);
 
 	if (err)
 		printf("[FAIL]\tsync errors: %d\n", err);
diff --git a/tools/testing/selftests/sync/synctest.h b/tools/testing/selftests/sync/synctest.h
index 0fad57d..c461577 100644
--- a/tools/testing/selftests/sync/synctest.h
+++ b/tools/testing/selftests/sync/synctest.h
@@ -54,4 +54,7 @@ int test_fence_merge_same_fence(void);
 /* Fence wait tests */
 int test_fence_multi_timeline_wait(void);
 
+/* Stress test - parallelism */
+int test_stress_two_threads_shared_timeline(void);
+
 #endif
-- 
2.9.3

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[PATCH 6/7] selftest: sync: stress consumer/producer test

[Emilio López]

This test is based on the libsync test suite from Android.
This commit includes a stress test that replicates a
consumer/producer pattern.

Signed-off-by: Emilio López <emilio.lopez@collabora.co.uk>
---
 tools/testing/selftests/sync/Makefile              |   1 +
 .../testing/selftests/sync/sync_stress_consumer.c  | 185 +++++++++++++++++++++
 tools/testing/selftests/sync/sync_test.c           |   1 +
 tools/testing/selftests/sync/synctest.h            |   3 +
 4 files changed, 190 insertions(+)
 create mode 100644 tools/testing/selftests/sync/sync_stress_consumer.c

diff --git a/tools/testing/selftests/sync/Makefile b/tools/testing/selftests/sync/Makefile
index 1ed2864..910e3f9 100644
--- a/tools/testing/selftests/sync/Makefile
+++ b/tools/testing/selftests/sync/Makefile
@@ -19,6 +19,7 @@ TESTS += sync_fence.o
 TESTS += sync_merge.o
 TESTS += sync_wait.o
 TESTS += sync_stress_parallelism.o
+TESTS += sync_stress_consumer.o
 
 sync_test: $(SRC) $(TESTS)
 
diff --git a/tools/testing/selftests/sync/sync_stress_consumer.c b/tools/testing/selftests/sync/sync_stress_consumer.c
new file mode 100644
index 0000000..d9eff8d
--- /dev/null
+++ b/tools/testing/selftests/sync/sync_stress_consumer.c
@@ -0,0 +1,185 @@
+/*
+ *  sync stress test: producer/consumer
+ *  Copyright 2015-2016 Collabora Ltd.
+ *
+ *  Based on the implementation from the Android Open Source Project,
+ *
+ *  Copyright 2012 Google, Inc
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a
+ *  copy of this software and associated documentation files (the "Software"),
+ *  to deal in the Software without restriction, including without limitation
+ *  the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ *  and/or sell copies of the Software, and to permit persons to whom the
+ *  Software is furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in
+ *  all copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ *  THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ *  OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ *  ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ *  OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include <pthread.h>
+
+#include "sync.h"
+#include "sw_sync.h"
+#include "synctest.h"
+
+/* IMPORTANT NOTE: if you see this test failing on your system, it may be
+ * due to a shortage of file descriptors. Please ensure your system has
+ * a sensible limit for this test to finish correctly.
+ */
+
+/* Returns 1 on error, 0 on success */
+static int busy_wait_on_fence(int fence)
+{
+	int error, active;
+
+	do {
+		error = sync_fence_count_with_status(fence, FENCE_STATUS_ERROR);
+		ASSERT(error == 0, "Error occurred on fence\n");
+		active = sync_fence_count_with_status(fence,
+						      FENCE_STATUS_ACTIVE);
+	} while (active);
+
+	return 0;
+}
+
+static struct {
+	int iterations;
+	int threads;
+	int counter;
+	int consumer_timeline;
+	int *producer_timelines;
+	pthread_mutex_t lock;
+} test_data_mpsc;
+
+static int mpsc_producer_thread(void *d)
+{
+	int id = (long)d;
+	int fence, valid, i;
+	int *producer_timelines = test_data_mpsc.producer_timelines;
+	int consumer_timeline = test_data_mpsc.consumer_timeline;
+	int iterations = test_data_mpsc.iterations;
+
+	for (i = 0; i < iterations; i++) {
+		fence = sw_sync_fence_create(consumer_timeline, "fence", i);
+		valid = sw_sync_fence_is_valid(fence);
+		ASSERT(valid, "Failure creating fence\n");
+
+		/*
+		 * Wait for the consumer to finish. Use alternate
+		 * means of waiting on the fence
+		 */
+
+		if ((iterations + id) % 8 != 0) {
+			ASSERT(sync_wait(fence, -1) > 0,
+			       "Failure waiting on fence\n");
+		} else {
+			ASSERT(busy_wait_on_fence(fence) == 0,
+			       "Failure waiting on fence\n");
+		}
+
+		/*
+		 * Every producer increments the counter, the consumer
+		 * checks and erases it
+		 */
+		pthread_mutex_lock(&test_data_mpsc.lock);
+		test_data_mpsc.counter++;
+		pthread_mutex_unlock(&test_data_mpsc.lock);
+
+		ASSERT(sw_sync_timeline_inc(producer_timelines[id], 1) == 0,
+		       "Error advancing producer timeline\n");
+
+		sw_sync_fence_destroy(fence);
+	}
+
+	return 0;
+}
+
+static int mpcs_consumer_thread(void)
+{
+	int fence, merged, tmp, valid, it, i;
+	int *producer_timelines = test_data_mpsc.producer_timelines;
+	int consumer_timeline = test_data_mpsc.consumer_timeline;
+	int iterations = test_data_mpsc.iterations;
+	int n = test_data_mpsc.threads;
+
+	for (it = 1; it <= iterations; it++) {
+		fence = sw_sync_fence_create(producer_timelines[0], "name", it);
+		for (i = 1; i < n; i++) {
+			tmp = sw_sync_fence_create(producer_timelines[i],
+						   "name", it);
+			merged = sync_merge("name", tmp, fence);
+			sw_sync_fence_destroy(tmp);
+			sw_sync_fence_destroy(fence);
+			fence = merged;
+		}
+
+		valid = sw_sync_fence_is_valid(fence);
+		ASSERT(valid, "Failure merging fences\n");
+
+		/*
+		 * Make sure we see an increment from every producer thread.
+		 * Vary the means by which we wait.
+		 */
+		if (iterations % 8 != 0) {
+			ASSERT(sync_wait(fence, -1) > 0,
+			       "Producers did not increment as expected\n");
+		} else {
+			ASSERT(busy_wait_on_fence(fence) == 0,
+			       "Producers did not increment as expected\n");
+		}
+
+		ASSERT(test_data_mpsc.counter == n * it,
+		       "Counter value mismatch!\n");
+
+		/* Release the producer threads */
+		ASSERT(sw_sync_timeline_inc(consumer_timeline, 1) == 0,
+		       "Failure releasing producer threads\n");
+
+		sw_sync_fence_destroy(fence);
+	}
+
+	return 0;
+}
+
+int test_consumer_stress_multi_producer_single_consumer(void)
+{
+	int iterations = 1 << 12;
+	int n = 5;
+	long i, ret;
+	int producer_timelines[n];
+	int consumer_timeline;
+	pthread_t threads[n];
+
+	consumer_timeline = sw_sync_timeline_create();
+	for (i = 0; i < n; i++)
+		producer_timelines[i] = sw_sync_timeline_create();
+
+	test_data_mpsc.producer_timelines = producer_timelines;
+	test_data_mpsc.consumer_timeline = consumer_timeline;
+	test_data_mpsc.iterations = iterations;
+	test_data_mpsc.threads = n;
+	test_data_mpsc.counter = 0;
+	pthread_mutex_init(&test_data_mpsc.lock, NULL);
+
+	for (i = 0; i < n; i++) {
+		pthread_create(&threads[i], NULL, (void * (*)(void *))
+			       mpsc_producer_thread, (void *)i);
+	}
+
+	/* Consumer thread runs here */
+	ret = mpcs_consumer_thread();
+
+	for (i = 0; i < n; i++)
+		pthread_join(threads[i], NULL);
+
+	return ret;
+}
diff --git a/tools/testing/selftests/sync/sync_test.c b/tools/testing/selftests/sync/sync_test.c
index 3bb1024..32f2534 100644
--- a/tools/testing/selftests/sync/sync_test.c
+++ b/tools/testing/selftests/sync/sync_test.c
@@ -67,6 +67,7 @@ int main(void)
 	err += RUN_TEST(test_fence_merge_same_fence);
 	err += RUN_TEST(test_fence_multi_timeline_wait);
 	err += RUN_TEST(test_stress_two_threads_shared_timeline);
+	err += RUN_TEST(test_consumer_stress_multi_producer_single_consumer);
 
 	if (err)
 		printf("[FAIL]\tsync errors: %d\n", err);
diff --git a/tools/testing/selftests/sync/synctest.h b/tools/testing/selftests/sync/synctest.h
index c461577..a94b622 100644
--- a/tools/testing/selftests/sync/synctest.h
+++ b/tools/testing/selftests/sync/synctest.h
@@ -57,4 +57,7 @@ int test_fence_multi_timeline_wait(void);
 /* Stress test - parallelism */
 int test_stress_two_threads_shared_timeline(void);
 
+/* Stress test - consumer */
+int test_consumer_stress_multi_producer_single_consumer(void);
+
 #endif
-- 
2.9.3

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[PATCH 7/7] selftest: sync: stress test for merges

[Emilio López]

This test is based on the libsync test suite from Android.
This commit includes a test to stress merge operations.

Signed-off-by: Emilio López <emilio.lopez@collabora.co.uk>
---
 tools/testing/selftests/sync/Makefile            |   1 +
 tools/testing/selftests/sync/sync_stress_merge.c | 116 +++++++++++++++++++++++
 tools/testing/selftests/sync/sync_test.c         |   1 +
 tools/testing/selftests/sync/synctest.h          |   3 +
 4 files changed, 121 insertions(+)
 create mode 100644 tools/testing/selftests/sync/sync_stress_merge.c

diff --git a/tools/testing/selftests/sync/Makefile b/tools/testing/selftests/sync/Makefile
index 910e3f9..6e05749 100644
--- a/tools/testing/selftests/sync/Makefile
+++ b/tools/testing/selftests/sync/Makefile
@@ -20,6 +20,7 @@ TESTS += sync_merge.o
 TESTS += sync_wait.o
 TESTS += sync_stress_parallelism.o
 TESTS += sync_stress_consumer.o
+TESTS += sync_stress_merge.o
 
 sync_test: $(SRC) $(TESTS)
 
diff --git a/tools/testing/selftests/sync/sync_stress_merge.c b/tools/testing/selftests/sync/sync_stress_merge.c
new file mode 100644
index 0000000..0e57360
--- /dev/null
+++ b/tools/testing/selftests/sync/sync_stress_merge.c
@@ -0,0 +1,116 @@
+/*
+ *  sync stress test: merging
+ *  Copyright 2015-2016 Collabora Ltd.
+ *
+ *  Based on the implementation from the Android Open Source Project,
+ *
+ *  Copyright 2012 Google, Inc
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a
+ *  copy of this software and associated documentation files (the "Software"),
+ *  to deal in the Software without restriction, including without limitation
+ *  the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ *  and/or sell copies of the Software, and to permit persons to whom the
+ *  Software is furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in
+ *  all copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ *  THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ *  OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ *  ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ *  OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+
+#include "sync.h"
+#include "sw_sync.h"
+#include "synctest.h"
+
+static int fence_map[1024 * 32];
+
+int test_merge_stress_random_merge(void)
+{
+	int i, size, ret;
+	int timeline_count = 32;
+	int merge_count = 1024 * 32;
+	int timelines[timeline_count];
+	int fence, tmpfence, merged, valid;
+	int timeline, timeline_offset, sync_point;
+
+	srand(time(NULL));
+
+	for (i = 0; i < timeline_count; i++)
+		timelines[i] = sw_sync_timeline_create();
+
+	fence = sw_sync_fence_create(timelines[0], "fence", 0);
+	valid = sw_sync_fence_is_valid(fence);
+	ASSERT(valid, "Failure creating fence\n");
+
+	memset(fence_map, -1, sizeof(fence_map));
+	fence_map[0] = 0;
+
+	/*
+	 * Randomly create sync_points out of a fixed set of timelines,
+	 * and merge them together
+	 */
+	for (i = 0; i < merge_count; i++) {
+		/* Generate sync_point. */
+		timeline_offset = rand() % timeline_count;
+		timeline = timelines[timeline_offset];
+		sync_point = rand();
+
+		/* Keep track of the latest sync_point in each timeline. */
+		if (fence_map[timeline_offset] == -1)
+			fence_map[timeline_offset] = sync_point;
+		else if (fence_map[timeline_offset] < sync_point)
+			fence_map[timeline_offset] = sync_point;
+
+		/* Merge */
+		tmpfence = sw_sync_fence_create(timeline, "fence", sync_point);
+		merged = sync_merge("merge", tmpfence, fence);
+		sw_sync_fence_destroy(tmpfence);
+		sw_sync_fence_destroy(fence);
+		fence = merged;
+
+		valid = sw_sync_fence_is_valid(merged);
+		ASSERT(valid, "Failure creating fence i\n");
+	}
+
+	size = 0;
+	for (i = 0; i < timeline_count; i++)
+		if (fence_map[i] != -1)
+			size++;
+
+	/* Confirm our map matches the fence. */
+	ASSERT(sync_fence_size(fence) == size,
+	       "Quantity of elements not matching\n");
+
+	/* Trigger the merged fence */
+	for (i = 0; i < timeline_count; i++) {
+		if (fence_map[i] != -1) {
+			ret = sync_wait(fence, 0);
+			ASSERT(ret == 0,
+			       "Failure waiting on fence until timeout\n");
+			/* Increment the timeline to the last sync_point */
+			sw_sync_timeline_inc(timelines[i], fence_map[i]);
+		}
+	}
+
+	/* Check that the fence is triggered. */
+	ret = sync_wait(fence, 0);
+	ASSERT(ret > 0, "Failure triggering fence\n");
+
+	sw_sync_fence_destroy(fence);
+
+	for (i = 0; i < timeline_count; i++)
+		sw_sync_timeline_destroy(timelines[i]);
+
+	return 0;
+}
diff --git a/tools/testing/selftests/sync/sync_test.c b/tools/testing/selftests/sync/sync_test.c
index 32f2534..9ea08d9 100644
--- a/tools/testing/selftests/sync/sync_test.c
+++ b/tools/testing/selftests/sync/sync_test.c
@@ -68,6 +68,7 @@ int main(void)
 	err += RUN_TEST(test_fence_multi_timeline_wait);
 	err += RUN_TEST(test_stress_two_threads_shared_timeline);
 	err += RUN_TEST(test_consumer_stress_multi_producer_single_consumer);
+	err += RUN_TEST(test_merge_stress_random_merge);
 
 	if (err)
 		printf("[FAIL]\tsync errors: %d\n", err);
diff --git a/tools/testing/selftests/sync/synctest.h b/tools/testing/selftests/sync/synctest.h
index a94b622..4e0e59f 100644
--- a/tools/testing/selftests/sync/synctest.h
+++ b/tools/testing/selftests/sync/synctest.h
@@ -60,4 +60,7 @@ int test_stress_two_threads_shared_timeline(void);
 /* Stress test - consumer */
 int test_consumer_stress_multi_producer_single_consumer(void);
 
+/* Stress test - merging */
+int test_merge_stress_random_merge(void);
+
 #endif
-- 
2.9.3

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[PATCH v2 0/7] Tests for sync infrastructure

[Emilio López]

Hello everyone,

This is a series of tests to exercise the sync kernel infrastructure. It is
meant to be a test suite for the work Gustavo has been doing to destage it.

These tests were originally part of a battery of tests shipping with
Android's libsync that were rewritten to use the new userspace interfaces.

This is the second iteration of the test suite. Main changes over v1 are
a reworked Makefile and small code style fixes.

If you are testing this on v4.9-rc1, do note that the last test will
currently fail due to a regression[0].

As usual, all comments are welcome.

Cheers!
Emilio

[0] https://patchwork.kernel.org/patch/9343347/

Emilio López (7):
  selftest: sync: basic tests for sw_sync framework
  selftest: sync: fence tests for sw_sync framework
  selftest: sync: merge tests for sw_sync framework
  selftest: sync: wait tests for sw_sync framework
  selftest: sync: stress test for parallelism
  selftest: sync: stress consumer/producer test
  selftest: sync: stress test for merges

 tools/testing/selftests/Makefile                   |   1 +
 tools/testing/selftests/sync/.gitignore            |   1 +
 tools/testing/selftests/sync/Makefile              |  24 +++
 tools/testing/selftests/sync/sw_sync.h             |  46 +++++
 tools/testing/selftests/sync/sync.c                | 221 +++++++++++++++++++++
 tools/testing/selftests/sync/sync.h                |  40 ++++
 tools/testing/selftests/sync/sync_alloc.c          |  74 +++++++
 tools/testing/selftests/sync/sync_fence.c          | 132 ++++++++++++
 tools/testing/selftests/sync/sync_merge.c          |  60 ++++++
 .../testing/selftests/sync/sync_stress_consumer.c  | 185 +++++++++++++++++
 tools/testing/selftests/sync/sync_stress_merge.c   | 115 +++++++++++
 .../selftests/sync/sync_stress_parallelism.c       | 111 +++++++++++
 tools/testing/selftests/sync/sync_test.c           |  79 ++++++++
 tools/testing/selftests/sync/sync_wait.c           |  91 +++++++++
 tools/testing/selftests/sync/synctest.h            |  66 ++++++
 15 files changed, 1246 insertions(+)
 create mode 100644 tools/testing/selftests/sync/.gitignore
 create mode 100644 tools/testing/selftests/sync/Makefile
 create mode 100644 tools/testing/selftests/sync/sw_sync.h
 create mode 100644 tools/testing/selftests/sync/sync.c
 create mode 100644 tools/testing/selftests/sync/sync.h
 create mode 100644 tools/testing/selftests/sync/sync_alloc.c
 create mode 100644 tools/testing/selftests/sync/sync_fence.c
 create mode 100644 tools/testing/selftests/sync/sync_merge.c
 create mode 100644 tools/testing/selftests/sync/sync_stress_consumer.c
 create mode 100644 tools/testing/selftests/sync/sync_stress_merge.c
 create mode 100644 tools/testing/selftests/sync/sync_stress_parallelism.c
 create mode 100644 tools/testing/selftests/sync/sync_test.c
 create mode 100644 tools/testing/selftests/sync/sync_wait.c
 create mode 100644 tools/testing/selftests/sync/synctest.h

-- 
2.10.1

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[PATCH v2 1/7] selftest: sync: basic tests for sw_sync framework

[Emilio López]

These tests are based on the libsync test suite from Android.
This commit lays the ground for future tests, as well as includes
tests for a variety of basic allocation commands.

Signed-off-by: Emilio López <emilio.lopez@collabora.co.uk>
---
 tools/testing/selftests/Makefile          |   1 +
 tools/testing/selftests/sync/.gitignore   |   1 +
 tools/testing/selftests/sync/Makefile     |  18 +++
 tools/testing/selftests/sync/sw_sync.h    |  46 +++++++
 tools/testing/selftests/sync/sync.c       | 221 ++++++++++++++++++++++++++++++
 tools/testing/selftests/sync/sync.h       |  40 ++++++
 tools/testing/selftests/sync/sync_alloc.c |  74 ++++++++++
 tools/testing/selftests/sync/sync_test.c  |  71 ++++++++++
 tools/testing/selftests/sync/synctest.h   |  47 +++++++
 9 files changed, 519 insertions(+)
 create mode 100644 tools/testing/selftests/sync/.gitignore
 create mode 100644 tools/testing/selftests/sync/Makefile
 create mode 100644 tools/testing/selftests/sync/sw_sync.h
 create mode 100644 tools/testing/selftests/sync/sync.c
 create mode 100644 tools/testing/selftests/sync/sync.h
 create mode 100644 tools/testing/selftests/sync/sync_alloc.c
 create mode 100644 tools/testing/selftests/sync/sync_test.c
 create mode 100644 tools/testing/selftests/sync/synctest.h

diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile
index f770dba..69cf1a6 100644
--- a/tools/testing/selftests/Makefile
+++ b/tools/testing/selftests/Makefile
@@ -23,6 +23,7 @@ TARGETS += seccomp
 TARGETS += sigaltstack
 TARGETS += size
 TARGETS += static_keys
+TARGETS += sync
 TARGETS += sysctl
 ifneq (1, $(quicktest))
 TARGETS += timers
diff --git a/tools/testing/selftests/sync/.gitignore b/tools/testing/selftests/sync/.gitignore
new file mode 100644
index 0000000..f5091e7
--- /dev/null
+++ b/tools/testing/selftests/sync/.gitignore
@@ -0,0 +1 @@
+sync_test
diff --git a/tools/testing/selftests/sync/Makefile b/tools/testing/selftests/sync/Makefile
new file mode 100644
index 0000000..620a59a
--- /dev/null
+++ b/tools/testing/selftests/sync/Makefile
@@ -0,0 +1,18 @@
+CFLAGS += -O2 -g -std=gnu89 -pthread -Wall -Wextra
+CFLAGS += -I../../../../usr/include/
+LDFLAGS += -pthread
+
+TEST_PROGS = sync_test
+
+all: $(TEST_PROGS)
+
+include ../lib.mk
+
+OBJS = sync_test.o sync.o
+
+TESTS += sync_alloc.o
+
+sync_test: $(OBJS) $(TESTS)
+
+clean:
+	$(RM) sync_test $(OBJS) $(TESTS)
diff --git a/tools/testing/selftests/sync/sw_sync.h b/tools/testing/selftests/sync/sw_sync.h
new file mode 100644
index 0000000..e2cfc6ba
--- /dev/null
+++ b/tools/testing/selftests/sync/sw_sync.h
@@ -0,0 +1,46 @@
+/*
+ *  sw_sync abstraction
+ *
+ *  Copyright 2015-2016 Collabora Ltd.
+ *
+ *  Based on the implementation from the Android Open Source Project,
+ *
+ *  Copyright 2013 Google, Inc
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a
+ *  copy of this software and associated documentation files (the "Software"),
+ *  to deal in the Software without restriction, including without limitation
+ *  the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ *  and/or sell copies of the Software, and to permit persons to whom the
+ *  Software is furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in
+ *  all copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ *  THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ *  OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ *  ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ *  OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef SELFTESTS_SW_SYNC_H
+#define SELFTESTS_SW_SYNC_H
+
+/*
+ * sw_sync is mainly intended for testing and should not be compiled into
+ * production kernels
+ */
+
+int sw_sync_timeline_create(void);
+int sw_sync_timeline_is_valid(int fd);
+int sw_sync_timeline_inc(int fd, unsigned int count);
+void sw_sync_timeline_destroy(int fd);
+
+int sw_sync_fence_create(int fd, const char *name, unsigned int value);
+int sw_sync_fence_is_valid(int fd);
+void sw_sync_fence_destroy(int fd);
+
+#endif
diff --git a/tools/testing/selftests/sync/sync.c b/tools/testing/selftests/sync/sync.c
new file mode 100644
index 0000000..f3d599f
--- /dev/null
+++ b/tools/testing/selftests/sync/sync.c
@@ -0,0 +1,221 @@
+/*
+ *  sync / sw_sync abstraction
+ *  Copyright 2015-2016 Collabora Ltd.
+ *
+ *  Based on the implementation from the Android Open Source Project,
+ *
+ *  Copyright 2012 Google, Inc
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a
+ *  copy of this software and associated documentation files (the "Software"),
+ *  to deal in the Software without restriction, including without limitation
+ *  the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ *  and/or sell copies of the Software, and to permit persons to whom the
+ *  Software is furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in
+ *  all copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ *  THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ *  OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ *  ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ *  OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include <fcntl.h>
+#include <malloc.h>
+#include <poll.h>
+#include <stdint.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <sys/ioctl.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+
+#include "sync.h"
+#include "sw_sync.h"
+
+#include <linux/sync_file.h>
+
+
+/* SW_SYNC ioctls */
+struct sw_sync_create_fence_data {
+	__u32	value;
+	char	name[32];
+	__s32	fence;
+};
+
+#define SW_SYNC_IOC_MAGIC		'W'
+#define SW_SYNC_IOC_CREATE_FENCE	_IOWR(SW_SYNC_IOC_MAGIC, 0,\
+					      struct sw_sync_create_fence_data)
+#define SW_SYNC_IOC_INC			_IOW(SW_SYNC_IOC_MAGIC, 1, __u32)
+
+
+int sync_wait(int fd, int timeout)
+{
+	struct pollfd fds;
+
+	fds.fd = fd;
+	fds.events = POLLIN | POLLERR;
+
+	return poll(&fds, 1, timeout);
+}
+
+int sync_merge(const char *name, int fd1, int fd2)
+{
+	struct sync_merge_data data = {};
+	int err;
+
+	data.fd2 = fd2;
+	strncpy(data.name, name, sizeof(data.name) - 1);
+	data.name[sizeof(data.name) - 1] = '\0';
+
+	err = ioctl(fd1, SYNC_IOC_MERGE, &data);
+	if (err < 0)
+		return err;
+
+	return data.fence;
+}
+
+static struct sync_file_info *sync_file_info(int fd)
+{
+	struct sync_file_info *info;
+	struct sync_fence_info *fence_info;
+	int err, num_fences;
+
+	info = calloc(1, sizeof(*info));
+	if (info == NULL)
+		return NULL;
+
+	err = ioctl(fd, SYNC_IOC_FILE_INFO, info);
+	if (err < 0) {
+		free(info);
+		return NULL;
+	}
+
+	num_fences = info->num_fences;
+
+	if (num_fences) {
+		info->flags = 0;
+		info->num_fences = num_fences;
+
+		fence_info = calloc(num_fences, sizeof(*fence_info));
+		if (!fence_info) {
+			free(info);
+			return NULL;
+		}
+
+		info->sync_fence_info = (uint64_t)fence_info;
+
+		err = ioctl(fd, SYNC_IOC_FILE_INFO, info);
+		if (err < 0) {
+			free(fence_info);
+			free(info);
+			return NULL;
+		}
+	}
+
+	return info;
+}
+
+static void sync_file_info_free(struct sync_file_info *info)
+{
+	free((void *)info->sync_fence_info);
+	free(info);
+}
+
+int sync_fence_size(int fd)
+{
+	int count;
+	struct sync_file_info *info = sync_file_info(fd);
+
+	if (!info)
+		return 0;
+
+	count = info->num_fences;
+
+	sync_file_info_free(info);
+
+	return count;
+}
+
+int sync_fence_count_with_status(int fd, int status)
+{
+	unsigned int i, count = 0;
+	struct sync_fence_info *fence_info = NULL;
+	struct sync_file_info *info = sync_file_info(fd);
+
+	if (!info)
+		return -1;
+
+	fence_info = (struct sync_fence_info *)info->sync_fence_info;
+	for (i = 0 ; i < info->num_fences ; i++) {
+		if (fence_info[i].status == status)
+			count++;
+	}
+
+	sync_file_info_free(info);
+
+	return count;
+}
+
+int sw_sync_timeline_create(void)
+{
+	return open("/sys/kernel/debug/sync/sw_sync", O_RDWR);
+}
+
+int sw_sync_timeline_inc(int fd, unsigned int count)
+{
+	__u32 arg = count;
+
+	return ioctl(fd, SW_SYNC_IOC_INC, &arg);
+}
+
+int sw_sync_timeline_is_valid(int fd)
+{
+	int status;
+
+	if (fd == -1)
+		return 0;
+
+	status = fcntl(fd, F_GETFD, 0);
+	return (status >= 0);
+}
+
+void sw_sync_timeline_destroy(int fd)
+{
+	if (sw_sync_timeline_is_valid(fd))
+		close(fd);
+}
+
+int sw_sync_fence_create(int fd, const char *name, unsigned int value)
+{
+	struct sw_sync_create_fence_data data = {};
+	int err;
+
+	data.value = value;
+	strncpy(data.name, name, sizeof(data.name) - 1);
+	data.name[sizeof(data.name) - 1] = '\0';
+
+	err = ioctl(fd, SW_SYNC_IOC_CREATE_FENCE, &data);
+	if (err < 0)
+		return err;
+
+	return data.fence;
+}
+
+int sw_sync_fence_is_valid(int fd)
+{
+	/* Same code! */
+	return sw_sync_timeline_is_valid(fd);
+}
+
+void sw_sync_fence_destroy(int fd)
+{
+	if (sw_sync_fence_is_valid(fd))
+		close(fd);
+}
diff --git a/tools/testing/selftests/sync/sync.h b/tools/testing/selftests/sync/sync.h
new file mode 100644
index 0000000..fb71561
--- /dev/null
+++ b/tools/testing/selftests/sync/sync.h
@@ -0,0 +1,40 @@
+/*
+ *  sync abstraction
+ *  Copyright 2015-2016 Collabora Ltd.
+ *
+ *  Based on the implementation from the Android Open Source Project,
+ *
+ *  Copyright 2012 Google, Inc
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a
+ *  copy of this software and associated documentation files (the "Software"),
+ *  to deal in the Software without restriction, including without limitation
+ *  the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ *  and/or sell copies of the Software, and to permit persons to whom the
+ *  Software is furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in
+ *  all copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ *  THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ *  OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ *  ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ *  OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef SELFTESTS_SYNC_H
+#define SELFTESTS_SYNC_H
+
+#define FENCE_STATUS_ERROR	(-1)
+#define FENCE_STATUS_ACTIVE	(0)
+#define FENCE_STATUS_SIGNALED	(1)
+
+int sync_wait(int fd, int timeout);
+int sync_merge(const char *name, int fd1, int fd2);
+int sync_fence_size(int fd);
+int sync_fence_count_with_status(int fd, int status);
+
+#endif
diff --git a/tools/testing/selftests/sync/sync_alloc.c b/tools/testing/selftests/sync/sync_alloc.c
new file mode 100644
index 0000000..66a28af
--- /dev/null
+++ b/tools/testing/selftests/sync/sync_alloc.c
@@ -0,0 +1,74 @@
+/*
+ *  sync allocation tests
+ *  Copyright 2015-2016 Collabora Ltd.
+ *
+ *  Based on the implementation from the Android Open Source Project,
+ *
+ *  Copyright 2012 Google, Inc
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a
+ *  copy of this software and associated documentation files (the "Software"),
+ *  to deal in the Software without restriction, including without limitation
+ *  the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ *  and/or sell copies of the Software, and to permit persons to whom the
+ *  Software is furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in
+ *  all copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ *  THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ *  OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ *  ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ *  OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include "sync.h"
+#include "sw_sync.h"
+#include "synctest.h"
+
+int test_alloc_timeline(void)
+{
+	int timeline, valid;
+
+	timeline = sw_sync_timeline_create();
+	valid = sw_sync_timeline_is_valid(timeline);
+	ASSERT(valid, "Failure allocating timeline\n");
+
+	sw_sync_timeline_destroy(timeline);
+	return 0;
+}
+
+int test_alloc_fence(void)
+{
+	int timeline, fence, valid;
+
+	timeline = sw_sync_timeline_create();
+	valid = sw_sync_timeline_is_valid(timeline);
+	ASSERT(valid, "Failure allocating timeline\n");
+
+	fence = sw_sync_fence_create(timeline, "allocFence", 1);
+	valid = sw_sync_fence_is_valid(fence);
+	ASSERT(valid, "Failure allocating fence\n");
+
+	sw_sync_fence_destroy(fence);
+	sw_sync_timeline_destroy(timeline);
+	return 0;
+}
+
+int test_alloc_fence_negative(void)
+{
+	int fence, timeline;
+
+	timeline = sw_sync_timeline_create();
+	ASSERT(timeline > 0, "Failure allocating timeline\n");
+
+	fence = sw_sync_fence_create(-1, "fence", 1);
+	ASSERT(fence < 0, "Success allocating negative fence\n");
+
+	sw_sync_fence_destroy(fence);
+	sw_sync_timeline_destroy(timeline);
+	return 0;
+}
diff --git a/tools/testing/selftests/sync/sync_test.c b/tools/testing/selftests/sync/sync_test.c
new file mode 100644
index 0000000..e471ba9
--- /dev/null
+++ b/tools/testing/selftests/sync/sync_test.c
@@ -0,0 +1,71 @@
+/*
+ *  sync test runner
+ *  Copyright 2015-2016 Collabora Ltd.
+ *
+ *  Based on the implementation from the Android Open Source Project,
+ *
+ *  Copyright 2012 Google, Inc
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a
+ *  copy of this software and associated documentation files (the "Software"),
+ *  to deal in the Software without restriction, including without limitation
+ *  the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ *  and/or sell copies of the Software, and to permit persons to whom the
+ *  Software is furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in
+ *  all copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ *  THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ *  OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ *  ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ *  OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+
+#include "synctest.h"
+
+static int run_test(int (*test)(void), char *name)
+{
+	int result;
+	pid_t childpid;
+
+	fflush(stdout);
+	childpid = fork();
+
+	if (childpid) {
+		waitpid(childpid, &result, 0);
+		if (WIFEXITED(result))
+			return WEXITSTATUS(result);
+		return 1;
+	}
+
+	printf("[RUN]\tExecuting %s\n", name);
+	exit(test());
+}
+
+int main(void)
+{
+	int err = 0;
+
+	printf("[RUN]\tTesting sync framework\n");
+
+	err += RUN_TEST(test_alloc_timeline);
+	err += RUN_TEST(test_alloc_fence);
+	err += RUN_TEST(test_alloc_fence_negative);
+
+	if (err)
+		printf("[FAIL]\tsync errors: %d\n", err);
+	else
+		printf("[OK]\tsync\n");
+
+	return !!err;
+}
diff --git a/tools/testing/selftests/sync/synctest.h b/tools/testing/selftests/sync/synctest.h
new file mode 100644
index 0000000..7d2d8ce
--- /dev/null
+++ b/tools/testing/selftests/sync/synctest.h
@@ -0,0 +1,47 @@
+/*
+ *  sync tests
+ *  Copyright 2015-2016 Collabora Ltd.
+ *
+ *  Based on the implementation from the Android Open Source Project,
+ *
+ *  Copyright 2012 Google, Inc
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a
+ *  copy of this software and associated documentation files (the "Software"),
+ *  to deal in the Software without restriction, including without limitation
+ *  the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ *  and/or sell copies of the Software, and to permit persons to whom the
+ *  Software is furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in
+ *  all copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ *  THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ *  OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ *  ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ *  OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef SELFTESTS_SYNCTEST_H
+#define SELFTESTS_SYNCTEST_H
+
+#include <stdio.h>
+
+#define ASSERT(cond, msg) do { \
+	if (!(cond)) { \
+		printf("[BAD]\t%s", (msg)); \
+		return 1; \
+	} \
+} while (0)
+
+#define RUN_TEST(x) run_test((x), #x)
+
+/* Allocation tests */
+int test_alloc_timeline(void);
+int test_alloc_fence(void);
+int test_alloc_fence_negative(void);
+
+#endif
-- 
2.10.1

_______________________________________________
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Re: [PATCH v2 1/7] selftest: sync: basic tests for sw_sync framework

[Gustavo Padovan]

Hi Emilio,

2016-10-19 Emilio López <emilio.lopez@collabora.co.uk>:

> These tests are based on the libsync test suite from Android.
> This commit lays the ground for future tests, as well as includes
> tests for a variety of basic allocation commands.
> 
> Signed-off-by: Emilio López <emilio.lopez@collabora.co.uk>
> ---
>  tools/testing/selftests/Makefile          |   1 +
>  tools/testing/selftests/sync/.gitignore   |   1 +
>  tools/testing/selftests/sync/Makefile     |  18 +++
>  tools/testing/selftests/sync/sw_sync.h    |  46 +++++++
>  tools/testing/selftests/sync/sync.c       | 221 ++++++++++++++++++++++++++++++
>  tools/testing/selftests/sync/sync.h       |  40 ++++++
>  tools/testing/selftests/sync/sync_alloc.c |  74 ++++++++++
>  tools/testing/selftests/sync/sync_test.c  |  71 ++++++++++
>  tools/testing/selftests/sync/synctest.h   |  47 +++++++
>  9 files changed, 519 insertions(+)
>  create mode 100644 tools/testing/selftests/sync/.gitignore
>  create mode 100644 tools/testing/selftests/sync/Makefile
>  create mode 100644 tools/testing/selftests/sync/sw_sync.h
>  create mode 100644 tools/testing/selftests/sync/sync.c
>  create mode 100644 tools/testing/selftests/sync/sync.h
>  create mode 100644 tools/testing/selftests/sync/sync_alloc.c
>  create mode 100644 tools/testing/selftests/sync/sync_test.c
>  create mode 100644 tools/testing/selftests/sync/synctest.h
> 
> diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile
> index f770dba..69cf1a6 100644
> --- a/tools/testing/selftests/Makefile
> +++ b/tools/testing/selftests/Makefile
> @@ -23,6 +23,7 @@ TARGETS += seccomp
>  TARGETS += sigaltstack
>  TARGETS += size
>  TARGETS += static_keys
> +TARGETS += sync
>  TARGETS += sysctl
>  ifneq (1, $(quicktest))
>  TARGETS += timers
> diff --git a/tools/testing/selftests/sync/.gitignore b/tools/testing/selftests/sync/.gitignore
> new file mode 100644
> index 0000000..f5091e7
> --- /dev/null
> +++ b/tools/testing/selftests/sync/.gitignore
> @@ -0,0 +1 @@
> +sync_test
> diff --git a/tools/testing/selftests/sync/Makefile b/tools/testing/selftests/sync/Makefile
> new file mode 100644
> index 0000000..620a59a
> --- /dev/null
> +++ b/tools/testing/selftests/sync/Makefile
> @@ -0,0 +1,18 @@
> +CFLAGS += -O2 -g -std=gnu89 -pthread -Wall -Wextra
> +CFLAGS += -I../../../../usr/include/
> +LDFLAGS += -pthread
> +
> +TEST_PROGS = sync_test
> +
> +all: $(TEST_PROGS)
> +
> +include ../lib.mk
> +
> +OBJS = sync_test.o sync.o
> +
> +TESTS += sync_alloc.o
> +
> +sync_test: $(OBJS) $(TESTS)
> +
> +clean:
> +	$(RM) sync_test $(OBJS) $(TESTS)
> diff --git a/tools/testing/selftests/sync/sw_sync.h b/tools/testing/selftests/sync/sw_sync.h
> new file mode 100644
> index 0000000..e2cfc6ba
> --- /dev/null
> +++ b/tools/testing/selftests/sync/sw_sync.h
> @@ -0,0 +1,46 @@
> +/*
> + *  sw_sync abstraction
> + *
> + *  Copyright 2015-2016 Collabora Ltd.
> + *
> + *  Based on the implementation from the Android Open Source Project,
> + *
> + *  Copyright 2013 Google, Inc
> + *
> + *  Permission is hereby granted, free of charge, to any person obtaining a
> + *  copy of this software and associated documentation files (the "Software"),
> + *  to deal in the Software without restriction, including without limitation
> + *  the rights to use, copy, modify, merge, publish, distribute, sublicense,
> + *  and/or sell copies of the Software, and to permit persons to whom the
> + *  Software is furnished to do so, subject to the following conditions:
> + *
> + *  The above copyright notice and this permission notice shall be included in
> + *  all copies or substantial portions of the Software.
> + *
> + *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
> + *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
> + *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
> + *  THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
> + *  OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
> + *  ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
> + *  OTHER DEALINGS IN THE SOFTWARE.
> + */
> +
> +#ifndef SELFTESTS_SW_SYNC_H
> +#define SELFTESTS_SW_SYNC_H
> +
> +/*
> + * sw_sync is mainly intended for testing and should not be compiled into
> + * production kernels
> + */
> +
> +int sw_sync_timeline_create(void);
> +int sw_sync_timeline_is_valid(int fd);
> +int sw_sync_timeline_inc(int fd, unsigned int count);
> +void sw_sync_timeline_destroy(int fd);
> +
> +int sw_sync_fence_create(int fd, const char *name, unsigned int value);
> +int sw_sync_fence_is_valid(int fd);
> +void sw_sync_fence_destroy(int fd);
> +
> +#endif
> diff --git a/tools/testing/selftests/sync/sync.c b/tools/testing/selftests/sync/sync.c
> new file mode 100644
> index 0000000..f3d599f
> --- /dev/null
> +++ b/tools/testing/selftests/sync/sync.c
> @@ -0,0 +1,221 @@
> +/*
> + *  sync / sw_sync abstraction
> + *  Copyright 2015-2016 Collabora Ltd.
> + *
> + *  Based on the implementation from the Android Open Source Project,
> + *
> + *  Copyright 2012 Google, Inc
> + *
> + *  Permission is hereby granted, free of charge, to any person obtaining a
> + *  copy of this software and associated documentation files (the "Software"),
> + *  to deal in the Software without restriction, including without limitation
> + *  the rights to use, copy, modify, merge, publish, distribute, sublicense,
> + *  and/or sell copies of the Software, and to permit persons to whom the
> + *  Software is furnished to do so, subject to the following conditions:
> + *
> + *  The above copyright notice and this permission notice shall be included in
> + *  all copies or substantial portions of the Software.
> + *
> + *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
> + *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
> + *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
> + *  THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
> + *  OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
> + *  ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
> + *  OTHER DEALINGS IN THE SOFTWARE.
> + */
> +
> +#include <fcntl.h>
> +#include <malloc.h>
> +#include <poll.h>
> +#include <stdint.h>
> +#include <string.h>
> +#include <unistd.h>
> +
> +#include <sys/ioctl.h>
> +#include <sys/stat.h>
> +#include <sys/types.h>
> +
> +#include "sync.h"
> +#include "sw_sync.h"
> +
> +#include <linux/sync_file.h>
> +
> +
> +/* SW_SYNC ioctls */
> +struct sw_sync_create_fence_data {
> +	__u32	value;
> +	char	name[32];
> +	__s32	fence;
> +};
> +
> +#define SW_SYNC_IOC_MAGIC		'W'
> +#define SW_SYNC_IOC_CREATE_FENCE	_IOWR(SW_SYNC_IOC_MAGIC, 0,\
> +					      struct sw_sync_create_fence_data)
> +#define SW_SYNC_IOC_INC			_IOW(SW_SYNC_IOC_MAGIC, 1, __u32)
> +
> +
> +int sync_wait(int fd, int timeout)
> +{
> +	struct pollfd fds;
> +
> +	fds.fd = fd;
> +	fds.events = POLLIN | POLLERR;
> +
> +	return poll(&fds, 1, timeout);
> +}

I think it is a good idea to keep the sync_wait behaviour similar to
what it was on android libsync. It should be something like this:

int sw_sync_wait(int fd, int timeout)                                           
{                                                                               
        struct pollfd fds = {0};                                                
        int ret;                                                                
                                                                                
        fds.fd = fd;                                                            
        fds.events = POLLIN;                                                    
                                                                                
        do {                                                                    
                 ret = poll(&fds, 1, timeout);                                  
                 if (ret > 0) {                                                 
                          if (fds.revents & (POLLERR | POLLNVAL)) {             
                                   errno = EINVAL;                              
                                   return -1;                                   
                          }                                                     
                          return 0;                                             
                 } else if (ret == 0) {                                         
                          errno = ETIME;                                        
                          return -1;                                            
                 }                                                              
        } while (ret == -1 && (errno == EINTR || errno == EAGAIN));             
                                                                                
        return ret;                                                             
} 


Gustavo

Re: [PATCH v2 1/7] selftest: sync: basic tests for sw_sync framework

[Shuah Khan]

Hi Gustavo,

On 11/01/2016 10:18 AM, Gustavo Padovan wrote:
> Hi Emilio,
> 
> 2016-10-19 Emilio López <emilio.lopez@collabora.co.uk>:
> 
>> These tests are based on the libsync test suite from Android.
>> This commit lays the ground for future tests, as well as includes
>> tests for a variety of basic allocation commands.
>>
>> Signed-off-by: Emilio López <emilio.lopez@collabora.co.uk>
>> ---
>>  tools/testing/selftests/Makefile          |   1 +
>>  tools/testing/selftests/sync/.gitignore   |   1 +
>>  tools/testing/selftests/sync/Makefile     |  18 +++
>>  tools/testing/selftests/sync/sw_sync.h    |  46 +++++++
>>  tools/testing/selftests/sync/sync.c       | 221 ++++++++++++++++++++++++++++++
>>  tools/testing/selftests/sync/sync.h       |  40 ++++++
>>  tools/testing/selftests/sync/sync_alloc.c |  74 ++++++++++
>>  tools/testing/selftests/sync/sync_test.c  |  71 ++++++++++
>>  tools/testing/selftests/sync/synctest.h   |  47 +++++++
>>  9 files changed, 519 insertions(+)
>>  create mode 100644 tools/testing/selftests/sync/.gitignore
>>  create mode 100644 tools/testing/selftests/sync/Makefile
>>  create mode 100644 tools/testing/selftests/sync/sw_sync.h
>>  create mode 100644 tools/testing/selftests/sync/sync.c
>>  create mode 100644 tools/testing/selftests/sync/sync.h
>>  create mode 100644 tools/testing/selftests/sync/sync_alloc.c
>>  create mode 100644 tools/testing/selftests/sync/sync_test.c
>>  create mode 100644 tools/testing/selftests/sync/synctest.h
>>
>> diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile
>> index f770dba..69cf1a6 100644
>> --- a/tools/testing/selftests/Makefile
>> +++ b/tools/testing/selftests/Makefile
>> @@ -23,6 +23,7 @@ TARGETS += seccomp
>>  TARGETS += sigaltstack
>>  TARGETS += size
>>  TARGETS += static_keys
>> +TARGETS += sync
>>  TARGETS += sysctl
>>  ifneq (1, $(quicktest))
>>  TARGETS += timers
>> diff --git a/tools/testing/selftests/sync/.gitignore b/tools/testing/selftests/sync/.gitignore
>> new file mode 100644
>> index 0000000..f5091e7
>> --- /dev/null
>> +++ b/tools/testing/selftests/sync/.gitignore
>> @@ -0,0 +1 @@
>> +sync_test
>> diff --git a/tools/testing/selftests/sync/Makefile b/tools/testing/selftests/sync/Makefile
>> new file mode 100644
>> index 0000000..620a59a
>> --- /dev/null
>> +++ b/tools/testing/selftests/sync/Makefile
>> @@ -0,0 +1,18 @@
>> +CFLAGS += -O2 -g -std=gnu89 -pthread -Wall -Wextra
>> +CFLAGS += -I../../../../usr/include/
>> +LDFLAGS += -pthread
>> +
>> +TEST_PROGS = sync_test
>> +
>> +all: $(TEST_PROGS)
>> +
>> +include ../lib.mk
>> +
>> +OBJS = sync_test.o sync.o
>> +
>> +TESTS += sync_alloc.o
>> +
>> +sync_test: $(OBJS) $(TESTS)
>> +
>> +clean:
>> +	$(RM) sync_test $(OBJS) $(TESTS)
>> diff --git a/tools/testing/selftests/sync/sw_sync.h b/tools/testing/selftests/sync/sw_sync.h
>> new file mode 100644
>> index 0000000..e2cfc6ba
>> --- /dev/null
>> +++ b/tools/testing/selftests/sync/sw_sync.h
>> @@ -0,0 +1,46 @@
>> +/*
>> + *  sw_sync abstraction
>> + *
>> + *  Copyright 2015-2016 Collabora Ltd.
>> + *
>> + *  Based on the implementation from the Android Open Source Project,
>> + *
>> + *  Copyright 2013 Google, Inc
>> + *
>> + *  Permission is hereby granted, free of charge, to any person obtaining a
>> + *  copy of this software and associated documentation files (the "Software"),
>> + *  to deal in the Software without restriction, including without limitation
>> + *  the rights to use, copy, modify, merge, publish, distribute, sublicense,
>> + *  and/or sell copies of the Software, and to permit persons to whom the
>> + *  Software is furnished to do so, subject to the following conditions:
>> + *
>> + *  The above copyright notice and this permission notice shall be included in
>> + *  all copies or substantial portions of the Software.
>> + *
>> + *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
>> + *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
>> + *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
>> + *  THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
>> + *  OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
>> + *  ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
>> + *  OTHER DEALINGS IN THE SOFTWARE.
>> + */
>> +
>> +#ifndef SELFTESTS_SW_SYNC_H
>> +#define SELFTESTS_SW_SYNC_H
>> +
>> +/*
>> + * sw_sync is mainly intended for testing and should not be compiled into
>> + * production kernels
>> + */
>> +
>> +int sw_sync_timeline_create(void);
>> +int sw_sync_timeline_is_valid(int fd);
>> +int sw_sync_timeline_inc(int fd, unsigned int count);
>> +void sw_sync_timeline_destroy(int fd);
>> +
>> +int sw_sync_fence_create(int fd, const char *name, unsigned int value);
>> +int sw_sync_fence_is_valid(int fd);
>> +void sw_sync_fence_destroy(int fd);
>> +
>> +#endif
>> diff --git a/tools/testing/selftests/sync/sync.c b/tools/testing/selftests/sync/sync.c
>> new file mode 100644
>> index 0000000..f3d599f
>> --- /dev/null
>> +++ b/tools/testing/selftests/sync/sync.c
>> @@ -0,0 +1,221 @@
>> +/*
>> + *  sync / sw_sync abstraction
>> + *  Copyright 2015-2016 Collabora Ltd.
>> + *
>> + *  Based on the implementation from the Android Open Source Project,
>> + *
>> + *  Copyright 2012 Google, Inc
>> + *
>> + *  Permission is hereby granted, free of charge, to any person obtaining a
>> + *  copy of this software and associated documentation files (the "Software"),
>> + *  to deal in the Software without restriction, including without limitation
>> + *  the rights to use, copy, modify, merge, publish, distribute, sublicense,
>> + *  and/or sell copies of the Software, and to permit persons to whom the
>> + *  Software is furnished to do so, subject to the following conditions:
>> + *
>> + *  The above copyright notice and this permission notice shall be included in
>> + *  all copies or substantial portions of the Software.
>> + *
>> + *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
>> + *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
>> + *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
>> + *  THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
>> + *  OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
>> + *  ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
>> + *  OTHER DEALINGS IN THE SOFTWARE.
>> + */
>> +
>> +#include <fcntl.h>
>> +#include <malloc.h>
>> +#include <poll.h>
>> +#include <stdint.h>
>> +#include <string.h>
>> +#include <unistd.h>
>> +
>> +#include <sys/ioctl.h>
>> +#include <sys/stat.h>
>> +#include <sys/types.h>
>> +
>> +#include "sync.h"
>> +#include "sw_sync.h"
>> +
>> +#include <linux/sync_file.h>
>> +
>> +
>> +/* SW_SYNC ioctls */
>> +struct sw_sync_create_fence_data {
>> +	__u32	value;
>> +	char	name[32];
>> +	__s32	fence;
>> +};
>> +
>> +#define SW_SYNC_IOC_MAGIC		'W'
>> +#define SW_SYNC_IOC_CREATE_FENCE	_IOWR(SW_SYNC_IOC_MAGIC, 0,\
>> +					      struct sw_sync_create_fence_data)
>> +#define SW_SYNC_IOC_INC			_IOW(SW_SYNC_IOC_MAGIC, 1, __u32)
>> +
>> +
>> +int sync_wait(int fd, int timeout)
>> +{
>> +	struct pollfd fds;
>> +
>> +	fds.fd = fd;
>> +	fds.events = POLLIN | POLLERR;
>> +
>> +	return poll(&fds, 1, timeout);
>> +}
> 
> I think it is a good idea to keep the sync_wait behaviour similar to
> what it was on android libsync. It should be something like this:

I didn't notice that this comment wasn't addressed. I will go ahead
and continue with the plan to get these into 4.10-rc1. If you want
to send me patch for this behavior, please do. We can address that
as a fix in 4.10-rc2

> 
> int sw_sync_wait(int fd, int timeout)                                           
> {                                                                               
>         struct pollfd fds = {0};                                                
>         int ret;                                                                
>                                                                                 
>         fds.fd = fd;                                                            
>         fds.events = POLLIN;                                                    
>                                                                                 
>         do {                                                                    
>                  ret = poll(&fds, 1, timeout);                                  
>                  if (ret > 0) {                                                 
>                           if (fds.revents & (POLLERR | POLLNVAL)) {             
>                                    errno = EINVAL;                              
>                                    return -1;                                   
>                           }                                                     
>                           return 0;                                             
>                  } else if (ret == 0) {                                         
>                           errno = ETIME;                                        
>                           return -1;                                            
>                  }                                                              
>         } while (ret == -1 && (errno == EINTR || errno == EAGAIN));             
>                                                                                 
>         return ret;                                                             
> } 
> 
> 
> Gustavo
> 

thanks,
-- Shuah

[PATCH v2 2/7] selftest: sync: fence tests for sw_sync framework

[Emilio López]

These tests are based on the libsync test suite from Android.
This commit includes tests for basic fence creation.

Signed-off-by: Emilio López <emilio.lopez@collabora.co.uk>
---
 tools/testing/selftests/sync/Makefile     |   1 +
 tools/testing/selftests/sync/sync_fence.c | 132 ++++++++++++++++++++++++++++++
 tools/testing/selftests/sync/sync_test.c  |   3 +
 tools/testing/selftests/sync/synctest.h   |   4 +
 4 files changed, 140 insertions(+)
 create mode 100644 tools/testing/selftests/sync/sync_fence.c

diff --git a/tools/testing/selftests/sync/Makefile b/tools/testing/selftests/sync/Makefile
index 620a59a..69e18b3 100644
--- a/tools/testing/selftests/sync/Makefile
+++ b/tools/testing/selftests/sync/Makefile
@@ -11,6 +11,7 @@ include ../lib.mk
 OBJS = sync_test.o sync.o
 
 TESTS += sync_alloc.o
+TESTS += sync_fence.o
 
 sync_test: $(OBJS) $(TESTS)
 
diff --git a/tools/testing/selftests/sync/sync_fence.c b/tools/testing/selftests/sync/sync_fence.c
new file mode 100644
index 0000000..13f1752
--- /dev/null
+++ b/tools/testing/selftests/sync/sync_fence.c
@@ -0,0 +1,132 @@
+/*
+ *  sync fence tests with one timeline
+ *  Copyright 2015-2016 Collabora Ltd.
+ *
+ *  Based on the implementation from the Android Open Source Project,
+ *
+ *  Copyright 2012 Google, Inc
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a
+ *  copy of this software and associated documentation files (the "Software"),
+ *  to deal in the Software without restriction, including without limitation
+ *  the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ *  and/or sell copies of the Software, and to permit persons to whom the
+ *  Software is furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in
+ *  all copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ *  THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ *  OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ *  ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ *  OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include "sync.h"
+#include "sw_sync.h"
+#include "synctest.h"
+
+int test_fence_one_timeline_wait(void)
+{
+	int fence, valid, ret;
+	int timeline = sw_sync_timeline_create();
+
+	valid = sw_sync_timeline_is_valid(timeline);
+	ASSERT(valid, "Failure allocating timeline\n");
+
+	fence = sw_sync_fence_create(timeline, "allocFence", 5);
+	valid = sw_sync_fence_is_valid(fence);
+	ASSERT(valid, "Failure allocating fence\n");
+
+	/* Wait on fence until timeout */
+	ret = sync_wait(fence, 0);
+	ASSERT(ret == 0, "Failure waiting on fence until timeout\n");
+
+	/* Advance timeline from 0 -> 1 */
+	ret = sw_sync_timeline_inc(timeline, 1);
+	ASSERT(ret == 0, "Failure advancing timeline\n");
+
+	/* Wait on fence until timeout */
+	ret = sync_wait(fence, 0);
+	ASSERT(ret == 0, "Failure waiting on fence until timeout\n");
+
+	/* Signal the fence */
+	ret = sw_sync_timeline_inc(timeline, 4);
+	ASSERT(ret == 0, "Failure signaling the fence\n");
+
+	/* Wait successfully */
+	ret = sync_wait(fence, 0);
+	ASSERT(ret > 0, "Failure waiting on fence\n");
+
+	/* Go even further, and confirm wait still succeeds */
+	ret = sw_sync_timeline_inc(timeline, 10);
+	ASSERT(ret == 0, "Failure going further\n");
+	ret = sync_wait(fence, 0);
+	ASSERT(ret > 0, "Failure waiting ahead\n");
+
+	sw_sync_fence_destroy(fence);
+	sw_sync_timeline_destroy(timeline);
+
+	return 0;
+}
+
+int test_fence_one_timeline_merge(void)
+{
+	int a, b, c, d, valid;
+	int timeline = sw_sync_timeline_create();
+
+	/* create fence a,b,c and then merge them all into fence d */
+	a = sw_sync_fence_create(timeline, "allocFence", 1);
+	b = sw_sync_fence_create(timeline, "allocFence", 2);
+	c = sw_sync_fence_create(timeline, "allocFence", 3);
+
+	valid = sw_sync_fence_is_valid(a) &&
+		sw_sync_fence_is_valid(b) &&
+		sw_sync_fence_is_valid(c);
+	ASSERT(valid, "Failure allocating fences\n");
+
+	d = sync_merge("mergeFence", b, a);
+	d = sync_merge("mergeFence", c, d);
+	valid = sw_sync_fence_is_valid(d);
+	ASSERT(valid, "Failure merging fences\n");
+
+	/* confirm all fences have one active point (even d) */
+	ASSERT(sync_fence_count_with_status(a, FENCE_STATUS_ACTIVE) == 1,
+	       "a has too many active fences!\n");
+	ASSERT(sync_fence_count_with_status(a, FENCE_STATUS_ACTIVE) == 1,
+	       "b has too many active fences!\n");
+	ASSERT(sync_fence_count_with_status(a, FENCE_STATUS_ACTIVE) == 1,
+	       "c has too many active fences!\n");
+	ASSERT(sync_fence_count_with_status(a, FENCE_STATUS_ACTIVE) == 1,
+	       "d has too many active fences!\n");
+
+	/* confirm that d is not signaled until the max of a,b,c */
+	sw_sync_timeline_inc(timeline, 1);
+	ASSERT(sync_fence_count_with_status(a, FENCE_STATUS_SIGNALED) == 1,
+	       "a did not signal!\n");
+	ASSERT(sync_fence_count_with_status(d, FENCE_STATUS_ACTIVE) == 1,
+	       "d signaled too early!\n");
+
+	sw_sync_timeline_inc(timeline, 1);
+	ASSERT(sync_fence_count_with_status(b, FENCE_STATUS_SIGNALED) == 1,
+	       "b did not signal!\n");
+	ASSERT(sync_fence_count_with_status(d, FENCE_STATUS_ACTIVE) == 1,
+	       "d signaled too early!\n");
+
+	sw_sync_timeline_inc(timeline, 1);
+	ASSERT(sync_fence_count_with_status(c, FENCE_STATUS_SIGNALED) == 1,
+	       "c did not signal!\n");
+	ASSERT(sync_fence_count_with_status(d, FENCE_STATUS_ACTIVE) == 0 &&
+	       sync_fence_count_with_status(d, FENCE_STATUS_SIGNALED) == 1,
+	       "d did not signal!\n");
+
+	sw_sync_fence_destroy(d);
+	sw_sync_fence_destroy(c);
+	sw_sync_fence_destroy(b);
+	sw_sync_fence_destroy(a);
+	sw_sync_timeline_destroy(timeline);
+	return 0;
+}
diff --git a/tools/testing/selftests/sync/sync_test.c b/tools/testing/selftests/sync/sync_test.c
index e471ba9..b442292b 100644
--- a/tools/testing/selftests/sync/sync_test.c
+++ b/tools/testing/selftests/sync/sync_test.c
@@ -62,6 +62,9 @@ int main(void)
 	err += RUN_TEST(test_alloc_fence);
 	err += RUN_TEST(test_alloc_fence_negative);
 
+	err += RUN_TEST(test_fence_one_timeline_wait);
+	err += RUN_TEST(test_fence_one_timeline_merge);
+
 	if (err)
 		printf("[FAIL]\tsync errors: %d\n", err);
 	else
diff --git a/tools/testing/selftests/sync/synctest.h b/tools/testing/selftests/sync/synctest.h
index 7d2d8ce..6505c28 100644
--- a/tools/testing/selftests/sync/synctest.h
+++ b/tools/testing/selftests/sync/synctest.h
@@ -44,4 +44,8 @@ int test_alloc_timeline(void);
 int test_alloc_fence(void);
 int test_alloc_fence_negative(void);
 
+/* Fence tests with one timeline */
+int test_fence_one_timeline_wait(void);
+int test_fence_one_timeline_merge(void);
+
 #endif
-- 
2.10.1

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[PATCH v2 3/7] selftest: sync: merge tests for sw_sync framework

[Emilio López]

These tests are based on the libsync test suite from Android.
This commit includes tests for basic merge operations.

Signed-off-by: Emilio López <emilio.lopez@collabora.co.uk>
---
 tools/testing/selftests/sync/Makefile     |  1 +
 tools/testing/selftests/sync/sync_merge.c | 60 +++++++++++++++++++++++++++++++
 tools/testing/selftests/sync/sync_test.c  |  1 +
 tools/testing/selftests/sync/synctest.h   |  3 ++
 4 files changed, 65 insertions(+)
 create mode 100644 tools/testing/selftests/sync/sync_merge.c

diff --git a/tools/testing/selftests/sync/Makefile b/tools/testing/selftests/sync/Makefile
index 69e18b3..a39497d 100644
--- a/tools/testing/selftests/sync/Makefile
+++ b/tools/testing/selftests/sync/Makefile
@@ -12,6 +12,7 @@ OBJS = sync_test.o sync.o
 
 TESTS += sync_alloc.o
 TESTS += sync_fence.o
+TESTS += sync_merge.o
 
 sync_test: $(OBJS) $(TESTS)
 
diff --git a/tools/testing/selftests/sync/sync_merge.c b/tools/testing/selftests/sync/sync_merge.c
new file mode 100644
index 0000000..8914d43
--- /dev/null
+++ b/tools/testing/selftests/sync/sync_merge.c
@@ -0,0 +1,60 @@
+/*
+ *  sync fence merge tests
+ *  Copyright 2015-2016 Collabora Ltd.
+ *
+ *  Based on the implementation from the Android Open Source Project,
+ *
+ *  Copyright 2012 Google, Inc
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a
+ *  copy of this software and associated documentation files (the "Software"),
+ *  to deal in the Software without restriction, including without limitation
+ *  the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ *  and/or sell copies of the Software, and to permit persons to whom the
+ *  Software is furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in
+ *  all copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ *  THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ *  OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ *  ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ *  OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include "sync.h"
+#include "sw_sync.h"
+#include "synctest.h"
+
+int test_fence_merge_same_fence(void)
+{
+	int fence, valid, merged;
+	int timeline = sw_sync_timeline_create();
+
+	valid = sw_sync_timeline_is_valid(timeline);
+	ASSERT(valid, "Failure allocating timeline\n");
+
+	fence = sw_sync_fence_create(timeline, "allocFence", 5);
+	valid = sw_sync_fence_is_valid(fence);
+	ASSERT(valid, "Failure allocating fence\n");
+
+	merged = sync_merge("mergeFence", fence, fence);
+	valid = sw_sync_fence_is_valid(fence);
+	ASSERT(valid, "Failure merging fence\n");
+
+	ASSERT(sync_fence_count_with_status(merged, FENCE_STATUS_SIGNALED) == 0,
+	       "fence signaled too early!\n");
+
+	sw_sync_timeline_inc(timeline, 5);
+	ASSERT(sync_fence_count_with_status(merged, FENCE_STATUS_SIGNALED) == 1,
+	       "fence did not signal!\n");
+
+	sw_sync_fence_destroy(merged);
+	sw_sync_fence_destroy(fence);
+	sw_sync_timeline_destroy(timeline);
+
+	return 0;
+}
diff --git a/tools/testing/selftests/sync/sync_test.c b/tools/testing/selftests/sync/sync_test.c
index b442292b..ab37eee 100644
--- a/tools/testing/selftests/sync/sync_test.c
+++ b/tools/testing/selftests/sync/sync_test.c
@@ -64,6 +64,7 @@ int main(void)
 
 	err += RUN_TEST(test_fence_one_timeline_wait);
 	err += RUN_TEST(test_fence_one_timeline_merge);
+	err += RUN_TEST(test_fence_merge_same_fence);
 
 	if (err)
 		printf("[FAIL]\tsync errors: %d\n", err);
diff --git a/tools/testing/selftests/sync/synctest.h b/tools/testing/selftests/sync/synctest.h
index 6505c28..c3b0b5e 100644
--- a/tools/testing/selftests/sync/synctest.h
+++ b/tools/testing/selftests/sync/synctest.h
@@ -48,4 +48,7 @@ int test_alloc_fence_negative(void);
 int test_fence_one_timeline_wait(void);
 int test_fence_one_timeline_merge(void);
 
+/* Fence merge tests */
+int test_fence_merge_same_fence(void);
+
 #endif
-- 
2.10.1

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[PATCH v2 4/7] selftest: sync: wait tests for sw_sync framework

[Emilio López]

These tests are based on the libsync test suite from Android.
This commit includes tests for waiting on fences.

Signed-off-by: Emilio López <emilio.lopez@collabora.co.uk>
---
 tools/testing/selftests/sync/Makefile    |  1 +
 tools/testing/selftests/sync/sync_test.c |  1 +
 tools/testing/selftests/sync/sync_wait.c | 91 ++++++++++++++++++++++++++++++++
 tools/testing/selftests/sync/synctest.h  |  3 ++
 4 files changed, 96 insertions(+)
 create mode 100644 tools/testing/selftests/sync/sync_wait.c

diff --git a/tools/testing/selftests/sync/Makefile b/tools/testing/selftests/sync/Makefile
index a39497d..99b58fe 100644
--- a/tools/testing/selftests/sync/Makefile
+++ b/tools/testing/selftests/sync/Makefile
@@ -13,6 +13,7 @@ OBJS = sync_test.o sync.o
 TESTS += sync_alloc.o
 TESTS += sync_fence.o
 TESTS += sync_merge.o
+TESTS += sync_wait.o
 
 sync_test: $(OBJS) $(TESTS)
 
diff --git a/tools/testing/selftests/sync/sync_test.c b/tools/testing/selftests/sync/sync_test.c
index ab37eee..eab5ceb 100644
--- a/tools/testing/selftests/sync/sync_test.c
+++ b/tools/testing/selftests/sync/sync_test.c
@@ -65,6 +65,7 @@ int main(void)
 	err += RUN_TEST(test_fence_one_timeline_wait);
 	err += RUN_TEST(test_fence_one_timeline_merge);
 	err += RUN_TEST(test_fence_merge_same_fence);
+	err += RUN_TEST(test_fence_multi_timeline_wait);
 
 	if (err)
 		printf("[FAIL]\tsync errors: %d\n", err);
diff --git a/tools/testing/selftests/sync/sync_wait.c b/tools/testing/selftests/sync/sync_wait.c
new file mode 100644
index 0000000..d69b752
--- /dev/null
+++ b/tools/testing/selftests/sync/sync_wait.c
@@ -0,0 +1,91 @@
+/*
+ *  sync fence wait tests
+ *  Copyright 2015-2016 Collabora Ltd.
+ *
+ *  Based on the implementation from the Android Open Source Project,
+ *
+ *  Copyright 2012 Google, Inc
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a
+ *  copy of this software and associated documentation files (the "Software"),
+ *  to deal in the Software without restriction, including without limitation
+ *  the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ *  and/or sell copies of the Software, and to permit persons to whom the
+ *  Software is furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in
+ *  all copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ *  THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ *  OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ *  ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ *  OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include "sync.h"
+#include "sw_sync.h"
+#include "synctest.h"
+
+int test_fence_multi_timeline_wait(void)
+{
+	int timelineA, timelineB, timelineC;
+	int fenceA, fenceB, fenceC, merged;
+	int valid, active, signaled, ret;
+
+	timelineA = sw_sync_timeline_create();
+	timelineB = sw_sync_timeline_create();
+	timelineC = sw_sync_timeline_create();
+
+	fenceA = sw_sync_fence_create(timelineA, "fenceA", 5);
+	fenceB = sw_sync_fence_create(timelineB, "fenceB", 5);
+	fenceC = sw_sync_fence_create(timelineC, "fenceC", 5);
+
+	merged = sync_merge("mergeFence", fenceB, fenceA);
+	merged = sync_merge("mergeFence", fenceC, merged);
+
+	valid = sw_sync_fence_is_valid(merged);
+	ASSERT(valid, "Failure merging fence from various timelines\n");
+
+	/* Confirm fence isn't signaled */
+	active = sync_fence_count_with_status(merged, FENCE_STATUS_ACTIVE);
+	ASSERT(active == 3, "Fence signaled too early!\n");
+
+	ret = sync_wait(merged, 0);
+	ASSERT(ret == 0,
+	       "Failure waiting on fence until timeout\n");
+
+	ret = sw_sync_timeline_inc(timelineA, 5);
+	active = sync_fence_count_with_status(merged, FENCE_STATUS_ACTIVE);
+	signaled = sync_fence_count_with_status(merged, FENCE_STATUS_SIGNALED);
+	ASSERT(active == 2 && signaled == 1,
+	       "Fence did not signal properly!\n");
+
+	ret = sw_sync_timeline_inc(timelineB, 5);
+	active = sync_fence_count_with_status(merged, FENCE_STATUS_ACTIVE);
+	signaled = sync_fence_count_with_status(merged, FENCE_STATUS_SIGNALED);
+	ASSERT(active == 1 && signaled == 2,
+	       "Fence did not signal properly!\n");
+
+	ret = sw_sync_timeline_inc(timelineC, 5);
+	active = sync_fence_count_with_status(merged, FENCE_STATUS_ACTIVE);
+	signaled = sync_fence_count_with_status(merged, FENCE_STATUS_SIGNALED);
+	ASSERT(active == 0 && signaled == 3,
+	       "Fence did not signal properly!\n");
+
+	/* confirm you can successfully wait */
+	ret = sync_wait(merged, 100);
+	ASSERT(ret > 0, "Failure waiting on signaled fence\n");
+
+	sw_sync_fence_destroy(merged);
+	sw_sync_fence_destroy(fenceC);
+	sw_sync_fence_destroy(fenceB);
+	sw_sync_fence_destroy(fenceA);
+	sw_sync_timeline_destroy(timelineC);
+	sw_sync_timeline_destroy(timelineB);
+	sw_sync_timeline_destroy(timelineA);
+
+	return 0;
+}
diff --git a/tools/testing/selftests/sync/synctest.h b/tools/testing/selftests/sync/synctest.h
index c3b0b5e..0fad57d 100644
--- a/tools/testing/selftests/sync/synctest.h
+++ b/tools/testing/selftests/sync/synctest.h
@@ -51,4 +51,7 @@ int test_fence_one_timeline_merge(void);
 /* Fence merge tests */
 int test_fence_merge_same_fence(void);
 
+/* Fence wait tests */
+int test_fence_multi_timeline_wait(void);
+
 #endif
-- 
2.10.1

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[PATCH v2 5/7] selftest: sync: stress test for parallelism

[Emilio López]

This test is based on the libsync test suite from Android.
This commit includes a stress test that invokes operations
in parallel.

Signed-off-by: Emilio López <emilio.lopez@collabora.co.uk>
---
 tools/testing/selftests/sync/Makefile              |   1 +
 .../selftests/sync/sync_stress_parallelism.c       | 111 +++++++++++++++++++++
 tools/testing/selftests/sync/sync_test.c           |   1 +
 tools/testing/selftests/sync/synctest.h            |   3 +
 4 files changed, 116 insertions(+)
 create mode 100644 tools/testing/selftests/sync/sync_stress_parallelism.c

diff --git a/tools/testing/selftests/sync/Makefile b/tools/testing/selftests/sync/Makefile
index 99b58fe..14f72bf 100644
--- a/tools/testing/selftests/sync/Makefile
+++ b/tools/testing/selftests/sync/Makefile
@@ -14,6 +14,7 @@ TESTS += sync_alloc.o
 TESTS += sync_fence.o
 TESTS += sync_merge.o
 TESTS += sync_wait.o
+TESTS += sync_stress_parallelism.o
 
 sync_test: $(OBJS) $(TESTS)
 
diff --git a/tools/testing/selftests/sync/sync_stress_parallelism.c b/tools/testing/selftests/sync/sync_stress_parallelism.c
new file mode 100644
index 0000000..e6c9be67
--- /dev/null
+++ b/tools/testing/selftests/sync/sync_stress_parallelism.c
@@ -0,0 +1,111 @@
+/*
+ *  sync stress test: parallelism
+ *  Copyright 2015-2016 Collabora Ltd.
+ *
+ *  Based on the implementation from the Android Open Source Project,
+ *
+ *  Copyright 2012 Google, Inc
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a
+ *  copy of this software and associated documentation files (the "Software"),
+ *  to deal in the Software without restriction, including without limitation
+ *  the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ *  and/or sell copies of the Software, and to permit persons to whom the
+ *  Software is furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in
+ *  all copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ *  THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ *  OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ *  ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ *  OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include <pthread.h>
+
+#include "sync.h"
+#include "sw_sync.h"
+#include "synctest.h"
+
+static struct {
+	int iterations;
+	int timeline;
+	int counter;
+} test_data_two_threads;
+
+static int test_stress_two_threads_shared_timeline_thread(void *d)
+{
+	int thread_id = (long)d;
+	int timeline = test_data_two_threads.timeline;
+	int iterations = test_data_two_threads.iterations;
+	int fence, valid, ret, i;
+
+	for (i = 0; i < iterations; i++) {
+		fence = sw_sync_fence_create(timeline, "fence",
+					     i * 2 + thread_id);
+		valid = sw_sync_fence_is_valid(fence);
+		ASSERT(valid, "Failure allocating fence\n");
+
+		/* Wait on the prior thread to complete */
+		ret = sync_wait(fence, -1);
+		ASSERT(ret > 0, "Problem occurred on prior thread\n");
+
+		/*
+		 * Confirm the previous thread's writes are visible
+		 * and then increment
+		 */
+		ASSERT(test_data_two_threads.counter == i * 2 + thread_id,
+		       "Counter got damaged!\n");
+		test_data_two_threads.counter++;
+
+		/* Kick off the other thread */
+		ret = sw_sync_timeline_inc(timeline, 1);
+		ASSERT(ret == 0, "Advancing timeline failed\n");
+
+		sw_sync_fence_destroy(fence);
+	}
+
+	return 0;
+}
+
+int test_stress_two_threads_shared_timeline(void)
+{
+	pthread_t a, b;
+	int valid;
+	int timeline = sw_sync_timeline_create();
+
+	valid = sw_sync_timeline_is_valid(timeline);
+	ASSERT(valid, "Failure allocating timeline\n");
+
+	test_data_two_threads.iterations = 1 << 16;
+	test_data_two_threads.counter = 0;
+	test_data_two_threads.timeline = timeline;
+
+	/*
+	 * Use a single timeline to synchronize two threads
+	 * hammmering on the same counter.
+	 */
+
+	pthread_create(&a, NULL, (void *(*)(void *))
+		       test_stress_two_threads_shared_timeline_thread,
+		       (void *)0);
+	pthread_create(&b, NULL, (void *(*)(void *))
+		       test_stress_two_threads_shared_timeline_thread,
+		       (void *)1);
+
+	pthread_join(a, NULL);
+	pthread_join(b, NULL);
+
+	/* make sure the threads did not trample on one another */
+	ASSERT(test_data_two_threads.counter ==
+	       test_data_two_threads.iterations * 2,
+	       "Counter has unexpected value\n");
+
+	sw_sync_timeline_destroy(timeline);
+
+	return 0;
+}
diff --git a/tools/testing/selftests/sync/sync_test.c b/tools/testing/selftests/sync/sync_test.c
index eab5ceb..3bb1024 100644
--- a/tools/testing/selftests/sync/sync_test.c
+++ b/tools/testing/selftests/sync/sync_test.c
@@ -66,6 +66,7 @@ int main(void)
 	err += RUN_TEST(test_fence_one_timeline_merge);
 	err += RUN_TEST(test_fence_merge_same_fence);
 	err += RUN_TEST(test_fence_multi_timeline_wait);
+	err += RUN_TEST(test_stress_two_threads_shared_timeline);
 
 	if (err)
 		printf("[FAIL]\tsync errors: %d\n", err);
diff --git a/tools/testing/selftests/sync/synctest.h b/tools/testing/selftests/sync/synctest.h
index 0fad57d..c461577 100644
--- a/tools/testing/selftests/sync/synctest.h
+++ b/tools/testing/selftests/sync/synctest.h
@@ -54,4 +54,7 @@ int test_fence_merge_same_fence(void);
 /* Fence wait tests */
 int test_fence_multi_timeline_wait(void);
 
+/* Stress test - parallelism */
+int test_stress_two_threads_shared_timeline(void);
+
 #endif
-- 
2.10.1

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[PATCH v2 6/7] selftest: sync: stress consumer/producer test

[Emilio López]

This test is based on the libsync test suite from Android.
This commit includes a stress test that replicates a
consumer/producer pattern.

Signed-off-by: Emilio López <emilio.lopez@collabora.co.uk>
---
 tools/testing/selftests/sync/Makefile              |   1 +
 .../testing/selftests/sync/sync_stress_consumer.c  | 185 +++++++++++++++++++++
 tools/testing/selftests/sync/sync_test.c           |   1 +
 tools/testing/selftests/sync/synctest.h            |   3 +
 4 files changed, 190 insertions(+)
 create mode 100644 tools/testing/selftests/sync/sync_stress_consumer.c

diff --git a/tools/testing/selftests/sync/Makefile b/tools/testing/selftests/sync/Makefile
index 14f72bf..20428d5 100644
--- a/tools/testing/selftests/sync/Makefile
+++ b/tools/testing/selftests/sync/Makefile
@@ -15,6 +15,7 @@ TESTS += sync_fence.o
 TESTS += sync_merge.o
 TESTS += sync_wait.o
 TESTS += sync_stress_parallelism.o
+TESTS += sync_stress_consumer.o
 
 sync_test: $(OBJS) $(TESTS)
 
diff --git a/tools/testing/selftests/sync/sync_stress_consumer.c b/tools/testing/selftests/sync/sync_stress_consumer.c
new file mode 100644
index 0000000..d9eff8d
--- /dev/null
+++ b/tools/testing/selftests/sync/sync_stress_consumer.c
@@ -0,0 +1,185 @@
+/*
+ *  sync stress test: producer/consumer
+ *  Copyright 2015-2016 Collabora Ltd.
+ *
+ *  Based on the implementation from the Android Open Source Project,
+ *
+ *  Copyright 2012 Google, Inc
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a
+ *  copy of this software and associated documentation files (the "Software"),
+ *  to deal in the Software without restriction, including without limitation
+ *  the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ *  and/or sell copies of the Software, and to permit persons to whom the
+ *  Software is furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in
+ *  all copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ *  THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ *  OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ *  ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ *  OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include <pthread.h>
+
+#include "sync.h"
+#include "sw_sync.h"
+#include "synctest.h"
+
+/* IMPORTANT NOTE: if you see this test failing on your system, it may be
+ * due to a shortage of file descriptors. Please ensure your system has
+ * a sensible limit for this test to finish correctly.
+ */
+
+/* Returns 1 on error, 0 on success */
+static int busy_wait_on_fence(int fence)
+{
+	int error, active;
+
+	do {
+		error = sync_fence_count_with_status(fence, FENCE_STATUS_ERROR);
+		ASSERT(error == 0, "Error occurred on fence\n");
+		active = sync_fence_count_with_status(fence,
+						      FENCE_STATUS_ACTIVE);
+	} while (active);
+
+	return 0;
+}
+
+static struct {
+	int iterations;
+	int threads;
+	int counter;
+	int consumer_timeline;
+	int *producer_timelines;
+	pthread_mutex_t lock;
+} test_data_mpsc;
+
+static int mpsc_producer_thread(void *d)
+{
+	int id = (long)d;
+	int fence, valid, i;
+	int *producer_timelines = test_data_mpsc.producer_timelines;
+	int consumer_timeline = test_data_mpsc.consumer_timeline;
+	int iterations = test_data_mpsc.iterations;
+
+	for (i = 0; i < iterations; i++) {
+		fence = sw_sync_fence_create(consumer_timeline, "fence", i);
+		valid = sw_sync_fence_is_valid(fence);
+		ASSERT(valid, "Failure creating fence\n");
+
+		/*
+		 * Wait for the consumer to finish. Use alternate
+		 * means of waiting on the fence
+		 */
+
+		if ((iterations + id) % 8 != 0) {
+			ASSERT(sync_wait(fence, -1) > 0,
+			       "Failure waiting on fence\n");
+		} else {
+			ASSERT(busy_wait_on_fence(fence) == 0,
+			       "Failure waiting on fence\n");
+		}
+
+		/*
+		 * Every producer increments the counter, the consumer
+		 * checks and erases it
+		 */
+		pthread_mutex_lock(&test_data_mpsc.lock);
+		test_data_mpsc.counter++;
+		pthread_mutex_unlock(&test_data_mpsc.lock);
+
+		ASSERT(sw_sync_timeline_inc(producer_timelines[id], 1) == 0,
+		       "Error advancing producer timeline\n");
+
+		sw_sync_fence_destroy(fence);
+	}
+
+	return 0;
+}
+
+static int mpcs_consumer_thread(void)
+{
+	int fence, merged, tmp, valid, it, i;
+	int *producer_timelines = test_data_mpsc.producer_timelines;
+	int consumer_timeline = test_data_mpsc.consumer_timeline;
+	int iterations = test_data_mpsc.iterations;
+	int n = test_data_mpsc.threads;
+
+	for (it = 1; it <= iterations; it++) {
+		fence = sw_sync_fence_create(producer_timelines[0], "name", it);
+		for (i = 1; i < n; i++) {
+			tmp = sw_sync_fence_create(producer_timelines[i],
+						   "name", it);
+			merged = sync_merge("name", tmp, fence);
+			sw_sync_fence_destroy(tmp);
+			sw_sync_fence_destroy(fence);
+			fence = merged;
+		}
+
+		valid = sw_sync_fence_is_valid(fence);
+		ASSERT(valid, "Failure merging fences\n");
+
+		/*
+		 * Make sure we see an increment from every producer thread.
+		 * Vary the means by which we wait.
+		 */
+		if (iterations % 8 != 0) {
+			ASSERT(sync_wait(fence, -1) > 0,
+			       "Producers did not increment as expected\n");
+		} else {
+			ASSERT(busy_wait_on_fence(fence) == 0,
+			       "Producers did not increment as expected\n");
+		}
+
+		ASSERT(test_data_mpsc.counter == n * it,
+		       "Counter value mismatch!\n");
+
+		/* Release the producer threads */
+		ASSERT(sw_sync_timeline_inc(consumer_timeline, 1) == 0,
+		       "Failure releasing producer threads\n");
+
+		sw_sync_fence_destroy(fence);
+	}
+
+	return 0;
+}
+
+int test_consumer_stress_multi_producer_single_consumer(void)
+{
+	int iterations = 1 << 12;
+	int n = 5;
+	long i, ret;
+	int producer_timelines[n];
+	int consumer_timeline;
+	pthread_t threads[n];
+
+	consumer_timeline = sw_sync_timeline_create();
+	for (i = 0; i < n; i++)
+		producer_timelines[i] = sw_sync_timeline_create();
+
+	test_data_mpsc.producer_timelines = producer_timelines;
+	test_data_mpsc.consumer_timeline = consumer_timeline;
+	test_data_mpsc.iterations = iterations;
+	test_data_mpsc.threads = n;
+	test_data_mpsc.counter = 0;
+	pthread_mutex_init(&test_data_mpsc.lock, NULL);
+
+	for (i = 0; i < n; i++) {
+		pthread_create(&threads[i], NULL, (void * (*)(void *))
+			       mpsc_producer_thread, (void *)i);
+	}
+
+	/* Consumer thread runs here */
+	ret = mpcs_consumer_thread();
+
+	for (i = 0; i < n; i++)
+		pthread_join(threads[i], NULL);
+
+	return ret;
+}
diff --git a/tools/testing/selftests/sync/sync_test.c b/tools/testing/selftests/sync/sync_test.c
index 3bb1024..32f2534 100644
--- a/tools/testing/selftests/sync/sync_test.c
+++ b/tools/testing/selftests/sync/sync_test.c
@@ -67,6 +67,7 @@ int main(void)
 	err += RUN_TEST(test_fence_merge_same_fence);
 	err += RUN_TEST(test_fence_multi_timeline_wait);
 	err += RUN_TEST(test_stress_two_threads_shared_timeline);
+	err += RUN_TEST(test_consumer_stress_multi_producer_single_consumer);
 
 	if (err)
 		printf("[FAIL]\tsync errors: %d\n", err);
diff --git a/tools/testing/selftests/sync/synctest.h b/tools/testing/selftests/sync/synctest.h
index c461577..a94b622 100644
--- a/tools/testing/selftests/sync/synctest.h
+++ b/tools/testing/selftests/sync/synctest.h
@@ -57,4 +57,7 @@ int test_fence_multi_timeline_wait(void);
 /* Stress test - parallelism */
 int test_stress_two_threads_shared_timeline(void);
 
+/* Stress test - consumer */
+int test_consumer_stress_multi_producer_single_consumer(void);
+
 #endif
-- 
2.10.1

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[PATCH v2 7/7] selftest: sync: stress test for merges

[Emilio López]

This test is based on the libsync test suite from Android.
This commit includes a test to stress merge operations.

Signed-off-by: Emilio López <emilio.lopez@collabora.co.uk>
---
 tools/testing/selftests/sync/Makefile            |   1 +
 tools/testing/selftests/sync/sync_stress_merge.c | 115 +++++++++++++++++++++++
 tools/testing/selftests/sync/sync_test.c         |   1 +
 tools/testing/selftests/sync/synctest.h          |   3 +
 4 files changed, 120 insertions(+)
 create mode 100644 tools/testing/selftests/sync/sync_stress_merge.c

diff --git a/tools/testing/selftests/sync/Makefile b/tools/testing/selftests/sync/Makefile
index 20428d5..87ac400 100644
--- a/tools/testing/selftests/sync/Makefile
+++ b/tools/testing/selftests/sync/Makefile
@@ -16,6 +16,7 @@ TESTS += sync_merge.o
 TESTS += sync_wait.o
 TESTS += sync_stress_parallelism.o
 TESTS += sync_stress_consumer.o
+TESTS += sync_stress_merge.o
 
 sync_test: $(OBJS) $(TESTS)
 
diff --git a/tools/testing/selftests/sync/sync_stress_merge.c b/tools/testing/selftests/sync/sync_stress_merge.c
new file mode 100644
index 0000000..99e83ef
--- /dev/null
+++ b/tools/testing/selftests/sync/sync_stress_merge.c
@@ -0,0 +1,115 @@
+/*
+ *  sync stress test: merging
+ *  Copyright 2015-2016 Collabora Ltd.
+ *
+ *  Based on the implementation from the Android Open Source Project,
+ *
+ *  Copyright 2012 Google, Inc
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a
+ *  copy of this software and associated documentation files (the "Software"),
+ *  to deal in the Software without restriction, including without limitation
+ *  the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ *  and/or sell copies of the Software, and to permit persons to whom the
+ *  Software is furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in
+ *  all copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ *  THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ *  OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ *  ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ *  OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+
+#include "sync.h"
+#include "sw_sync.h"
+#include "synctest.h"
+
+int test_merge_stress_random_merge(void)
+{
+	int i, size, ret;
+	int timeline_count = 32;
+	int merge_count = 1024 * 32;
+	int timelines[timeline_count];
+	int fence_map[timeline_count];
+	int fence, tmpfence, merged, valid;
+	int timeline, timeline_offset, sync_point;
+
+	srand(time(NULL));
+
+	for (i = 0; i < timeline_count; i++)
+		timelines[i] = sw_sync_timeline_create();
+
+	fence = sw_sync_fence_create(timelines[0], "fence", 0);
+	valid = sw_sync_fence_is_valid(fence);
+	ASSERT(valid, "Failure creating fence\n");
+
+	memset(fence_map, -1, sizeof(fence_map));
+	fence_map[0] = 0;
+
+	/*
+	 * Randomly create sync_points out of a fixed set of timelines,
+	 * and merge them together
+	 */
+	for (i = 0; i < merge_count; i++) {
+		/* Generate sync_point. */
+		timeline_offset = rand() % timeline_count;
+		timeline = timelines[timeline_offset];
+		sync_point = rand();
+
+		/* Keep track of the latest sync_point in each timeline. */
+		if (fence_map[timeline_offset] == -1)
+			fence_map[timeline_offset] = sync_point;
+		else if (fence_map[timeline_offset] < sync_point)
+			fence_map[timeline_offset] = sync_point;
+
+		/* Merge */
+		tmpfence = sw_sync_fence_create(timeline, "fence", sync_point);
+		merged = sync_merge("merge", tmpfence, fence);
+		sw_sync_fence_destroy(tmpfence);
+		sw_sync_fence_destroy(fence);
+		fence = merged;
+
+		valid = sw_sync_fence_is_valid(merged);
+		ASSERT(valid, "Failure creating fence i\n");
+	}
+
+	size = 0;
+	for (i = 0; i < timeline_count; i++)
+		if (fence_map[i] != -1)
+			size++;
+
+	/* Confirm our map matches the fence. */
+	ASSERT(sync_fence_size(fence) == size,
+	       "Quantity of elements not matching\n");
+
+	/* Trigger the merged fence */
+	for (i = 0; i < timeline_count; i++) {
+		if (fence_map[i] != -1) {
+			ret = sync_wait(fence, 0);
+			ASSERT(ret == 0,
+			       "Failure waiting on fence until timeout\n");
+			/* Increment the timeline to the last sync_point */
+			sw_sync_timeline_inc(timelines[i], fence_map[i]);
+		}
+	}
+
+	/* Check that the fence is triggered. */
+	ret = sync_wait(fence, 0);
+	ASSERT(ret > 0, "Failure triggering fence\n");
+
+	sw_sync_fence_destroy(fence);
+
+	for (i = 0; i < timeline_count; i++)
+		sw_sync_timeline_destroy(timelines[i]);
+
+	return 0;
+}
diff --git a/tools/testing/selftests/sync/sync_test.c b/tools/testing/selftests/sync/sync_test.c
index 32f2534..9ea08d9 100644
--- a/tools/testing/selftests/sync/sync_test.c
+++ b/tools/testing/selftests/sync/sync_test.c
@@ -68,6 +68,7 @@ int main(void)
 	err += RUN_TEST(test_fence_multi_timeline_wait);
 	err += RUN_TEST(test_stress_two_threads_shared_timeline);
 	err += RUN_TEST(test_consumer_stress_multi_producer_single_consumer);
+	err += RUN_TEST(test_merge_stress_random_merge);
 
 	if (err)
 		printf("[FAIL]\tsync errors: %d\n", err);
diff --git a/tools/testing/selftests/sync/synctest.h b/tools/testing/selftests/sync/synctest.h
index a94b622..4e0e59f 100644
--- a/tools/testing/selftests/sync/synctest.h
+++ b/tools/testing/selftests/sync/synctest.h
@@ -60,4 +60,7 @@ int test_stress_two_threads_shared_timeline(void);
 /* Stress test - consumer */
 int test_consumer_stress_multi_producer_single_consumer(void);
 
+/* Stress test - merging */
+int test_merge_stress_random_merge(void);
+
 #endif
-- 
2.10.1

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Re: [PATCH v2 0/7] Tests for sync infrastructure

[Shuah Khan]

On 10/19/2016 06:49 AM, Emilio López wrote:
> Hello everyone,
> 
> This is a series of tests to exercise the sync kernel infrastructure. It is
> meant to be a test suite for the work Gustavo has been doing to destage it.
> 
> These tests were originally part of a battery of tests shipping with
> Android's libsync that were rewritten to use the new userspace interfaces.
> 
> This is the second iteration of the test suite. Main changes over v1 are
> a reworked Makefile and small code style fixes.
> 
> If you are testing this on v4.9-rc1, do note that the last test will
> currently fail due to a regression[0].

Hi Emilio,

Thanks. I will apply these to linux-kselftest next for 4.10-rc1

-- Shuah
> 
> As usual, all comments are welcome.
> 
> Cheers!
> Emilio
> 
> [0] https://patchwork.kernel.org/patch/9343347/
> 
> Emilio López (7):
>   selftest: sync: basic tests for sw_sync framework
>   selftest: sync: fence tests for sw_sync framework
>   selftest: sync: merge tests for sw_sync framework
>   selftest: sync: wait tests for sw_sync framework
>   selftest: sync: stress test for parallelism
>   selftest: sync: stress consumer/producer test
>   selftest: sync: stress test for merges
> 
>  tools/testing/selftests/Makefile                   |   1 +
>  tools/testing/selftests/sync/.gitignore            |   1 +
>  tools/testing/selftests/sync/Makefile              |  24 +++
>  tools/testing/selftests/sync/sw_sync.h             |  46 +++++
>  tools/testing/selftests/sync/sync.c                | 221 +++++++++++++++++++++
>  tools/testing/selftests/sync/sync.h                |  40 ++++
>  tools/testing/selftests/sync/sync_alloc.c          |  74 +++++++
>  tools/testing/selftests/sync/sync_fence.c          | 132 ++++++++++++
>  tools/testing/selftests/sync/sync_merge.c          |  60 ++++++
>  .../testing/selftests/sync/sync_stress_consumer.c  | 185 +++++++++++++++++
>  tools/testing/selftests/sync/sync_stress_merge.c   | 115 +++++++++++
>  .../selftests/sync/sync_stress_parallelism.c       | 111 +++++++++++
>  tools/testing/selftests/sync/sync_test.c           |  79 ++++++++
>  tools/testing/selftests/sync/sync_wait.c           |  91 +++++++++
>  tools/testing/selftests/sync/synctest.h            |  66 ++++++
>  15 files changed, 1246 insertions(+)
>  create mode 100644 tools/testing/selftests/sync/.gitignore
>  create mode 100644 tools/testing/selftests/sync/Makefile
>  create mode 100644 tools/testing/selftests/sync/sw_sync.h
>  create mode 100644 tools/testing/selftests/sync/sync.c
>  create mode 100644 tools/testing/selftests/sync/sync.h
>  create mode 100644 tools/testing/selftests/sync/sync_alloc.c
>  create mode 100644 tools/testing/selftests/sync/sync_fence.c
>  create mode 100644 tools/testing/selftests/sync/sync_merge.c
>  create mode 100644 tools/testing/selftests/sync/sync_stress_consumer.c
>  create mode 100644 tools/testing/selftests/sync/sync_stress_merge.c
>  create mode 100644 tools/testing/selftests/sync/sync_stress_parallelism.c
>  create mode 100644 tools/testing/selftests/sync/sync_test.c
>  create mode 100644 tools/testing/selftests/sync/sync_wait.c
>  create mode 100644 tools/testing/selftests/sync/synctest.h
> 

Re: [PATCH v2 0/7] Tests for sync infrastructure

[Shuah Khan]

On 12/01/2016 06:17 PM, Shuah Khan wrote:
> On 10/19/2016 06:49 AM, Emilio López wrote:
>> Hello everyone,
>>
>> This is a series of tests to exercise the sync kernel infrastructure. It is
>> meant to be a test suite for the work Gustavo has been doing to destage it.
>>
>> These tests were originally part of a battery of tests shipping with
>> Android's libsync that were rewritten to use the new userspace interfaces.
>>
>> This is the second iteration of the test suite. Main changes over v1 are
>> a reworked Makefile and small code style fixes.
>>
>> If you are testing this on v4.9-rc1, do note that the last test will
>> currently fail due to a regression[0].
> 
> Hi Emilio,
> 
> Thanks. I will apply these to linux-kselftest next for 4.10-rc1
> 
> -- Shuah
>>
>> As usual, all comments are welcome.
>>

Hi Emilio,

Applied to linux-kselftest next. Could you take a look at the output
and see if it can be refined. Does [BAD] mean the test failed? Results
could refined to help user understand if a test failed or not clearly.
This can be done in a separate patch as a fix in one of the 4.01-rcs

thanks,
-- Shuah

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