From: Steven Rostedt <rostedt@goodmis.org>
To: linux-kernel@vger.kernel.org
Cc: Masami Hiramatsu <mhiramat@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Andrew Morton <akpm@linux-foundation.org>,
Beau Belgrave <beaub@linux.microsoft.com>
Subject: [for-next][PATCH 17/25] tracing/user_events: Update self-tests to write ABI
Date: Wed, 29 Mar 2023 15:45:33 -0400 [thread overview]
Message-ID: <20230329194552.474991854@goodmis.org> (raw)
In-Reply-To: 20230329194516.146147554@goodmis.org
From: Beau Belgrave <beaub@linux.microsoft.com>
ABI has been changed to remote writes, update existing test cases to use
this new ABI to ensure existing functionality continues to work.
Link: https://lkml.kernel.org/r/20230328235219.203-7-beaub@linux.microsoft.com
Signed-off-by: Beau Belgrave <beaub@linux.microsoft.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
---
.../selftests/user_events/ftrace_test.c | 152 ++++++++++--------
.../testing/selftests/user_events/perf_test.c | 33 ++--
2 files changed, 96 insertions(+), 89 deletions(-)
diff --git a/tools/testing/selftests/user_events/ftrace_test.c b/tools/testing/selftests/user_events/ftrace_test.c
index a0b2c96eb252..aceafacfb126 100644
--- a/tools/testing/selftests/user_events/ftrace_test.c
+++ b/tools/testing/selftests/user_events/ftrace_test.c
@@ -12,6 +12,7 @@
#include <fcntl.h>
#include <sys/ioctl.h>
#include <sys/stat.h>
+#include <sys/uio.h>
#include <unistd.h>
#include "../kselftest_harness.h"
@@ -22,11 +23,6 @@ const char *enable_file = "/sys/kernel/tracing/events/user_events/__test_event/e
const char *trace_file = "/sys/kernel/tracing/trace";
const char *fmt_file = "/sys/kernel/tracing/events/user_events/__test_event/format";
-static inline int status_check(char *status_page, int status_bit)
-{
- return status_page[status_bit >> 3] & (1 << (status_bit & 7));
-}
-
static int trace_bytes(void)
{
int fd = open(trace_file, O_RDONLY);
@@ -106,13 +102,23 @@ static int get_print_fmt(char *buffer, int len)
return -1;
}
-static int clear(void)
+static int clear(int *check)
{
+ struct user_unreg unreg = {0};
+
+ unreg.size = sizeof(unreg);
+ unreg.disable_bit = 31;
+ unreg.disable_addr = (__u64)check;
+
int fd = open(data_file, O_RDWR);
if (fd == -1)
return -1;
+ if (ioctl(fd, DIAG_IOCSUNREG, &unreg) == -1)
+ if (errno != ENOENT)
+ return -1;
+
if (ioctl(fd, DIAG_IOCSDEL, "__test_event") == -1)
if (errno != ENOENT)
return -1;
@@ -122,7 +128,7 @@ static int clear(void)
return 0;
}
-static int check_print_fmt(const char *event, const char *expected)
+static int check_print_fmt(const char *event, const char *expected, int *check)
{
struct user_reg reg = {0};
char print_fmt[256];
@@ -130,7 +136,7 @@ static int check_print_fmt(const char *event, const char *expected)
int fd;
/* Ensure cleared */
- ret = clear();
+ ret = clear(check);
if (ret != 0)
return ret;
@@ -142,14 +148,19 @@ static int check_print_fmt(const char *event, const char *expected)
reg.size = sizeof(reg);
reg.name_args = (__u64)event;
+ reg.enable_bit = 31;
+ reg.enable_addr = (__u64)check;
+ reg.enable_size = sizeof(*check);
/* Register should work */
ret = ioctl(fd, DIAG_IOCSREG, ®);
close(fd);
- if (ret != 0)
+ if (ret != 0) {
+ printf("Reg failed in fmt\n");
return ret;
+ }
/* Ensure correct print_fmt */
ret = get_print_fmt(print_fmt, sizeof(print_fmt));
@@ -164,6 +175,7 @@ FIXTURE(user) {
int status_fd;
int data_fd;
int enable_fd;
+ int check;
};
FIXTURE_SETUP(user) {
@@ -185,59 +197,56 @@ FIXTURE_TEARDOWN(user) {
close(self->enable_fd);
}
- ASSERT_EQ(0, clear());
+ if (clear(&self->check) != 0)
+ printf("WARNING: Clear didn't work!\n");
}
TEST_F(user, register_events) {
struct user_reg reg = {0};
- int page_size = sysconf(_SC_PAGESIZE);
- char *status_page;
+ struct user_unreg unreg = {0};
reg.size = sizeof(reg);
reg.name_args = (__u64)"__test_event u32 field1; u32 field2";
+ reg.enable_bit = 31;
+ reg.enable_addr = (__u64)&self->check;
+ reg.enable_size = sizeof(self->check);
- status_page = mmap(NULL, page_size, PROT_READ, MAP_SHARED,
- self->status_fd, 0);
+ unreg.size = sizeof(unreg);
+ unreg.disable_bit = 31;
+ unreg.disable_addr = (__u64)&self->check;
/* Register should work */
ASSERT_EQ(0, ioctl(self->data_fd, DIAG_IOCSREG, ®));
ASSERT_EQ(0, reg.write_index);
- ASSERT_NE(0, reg.status_bit);
/* Multiple registers should result in same index */
ASSERT_EQ(0, ioctl(self->data_fd, DIAG_IOCSREG, ®));
ASSERT_EQ(0, reg.write_index);
- ASSERT_NE(0, reg.status_bit);
/* Ensure disabled */
self->enable_fd = open(enable_file, O_RDWR);
ASSERT_NE(-1, self->enable_fd);
ASSERT_NE(-1, write(self->enable_fd, "0", sizeof("0")))
- /* MMAP should work and be zero'd */
- ASSERT_NE(MAP_FAILED, status_page);
- ASSERT_NE(NULL, status_page);
- ASSERT_EQ(0, status_check(status_page, reg.status_bit));
-
/* Enable event and ensure bits updated in status */
ASSERT_NE(-1, write(self->enable_fd, "1", sizeof("1")))
- ASSERT_NE(0, status_check(status_page, reg.status_bit));
+ ASSERT_EQ(1 << reg.enable_bit, self->check);
/* Disable event and ensure bits updated in status */
ASSERT_NE(-1, write(self->enable_fd, "0", sizeof("0")))
- ASSERT_EQ(0, status_check(status_page, reg.status_bit));
+ ASSERT_EQ(0, self->check);
/* File still open should return -EBUSY for delete */
ASSERT_EQ(-1, ioctl(self->data_fd, DIAG_IOCSDEL, "__test_event"));
ASSERT_EQ(EBUSY, errno);
- /* Delete should work only after close */
+ /* Unregister */
+ ASSERT_EQ(0, ioctl(self->data_fd, DIAG_IOCSUNREG, &unreg));
+
+ /* Delete should work only after close and unregister */
close(self->data_fd);
self->data_fd = open(data_file, O_RDWR);
ASSERT_EQ(0, ioctl(self->data_fd, DIAG_IOCSDEL, "__test_event"));
-
- /* Unmap should work */
- ASSERT_EQ(0, munmap(status_page, page_size));
}
TEST_F(user, write_events) {
@@ -245,11 +254,12 @@ TEST_F(user, write_events) {
struct iovec io[3];
__u32 field1, field2;
int before = 0, after = 0;
- int page_size = sysconf(_SC_PAGESIZE);
- char *status_page;
reg.size = sizeof(reg);
reg.name_args = (__u64)"__test_event u32 field1; u32 field2";
+ reg.enable_bit = 31;
+ reg.enable_addr = (__u64)&self->check;
+ reg.enable_size = sizeof(self->check);
field1 = 1;
field2 = 2;
@@ -261,18 +271,10 @@ TEST_F(user, write_events) {
io[2].iov_base = &field2;
io[2].iov_len = sizeof(field2);
- status_page = mmap(NULL, page_size, PROT_READ, MAP_SHARED,
- self->status_fd, 0);
-
/* Register should work */
ASSERT_EQ(0, ioctl(self->data_fd, DIAG_IOCSREG, ®));
ASSERT_EQ(0, reg.write_index);
- ASSERT_NE(0, reg.status_bit);
-
- /* MMAP should work and be zero'd */
- ASSERT_NE(MAP_FAILED, status_page);
- ASSERT_NE(NULL, status_page);
- ASSERT_EQ(0, status_check(status_page, reg.status_bit));
+ ASSERT_EQ(0, self->check);
/* Write should fail on invalid slot with ENOENT */
io[0].iov_base = &field2;
@@ -287,7 +289,7 @@ TEST_F(user, write_events) {
ASSERT_NE(-1, write(self->enable_fd, "1", sizeof("1")))
/* Event should now be enabled */
- ASSERT_NE(0, status_check(status_page, reg.status_bit));
+ ASSERT_NE(1 << reg.enable_bit, self->check);
/* Write should make it out to ftrace buffers */
before = trace_bytes();
@@ -304,6 +306,9 @@ TEST_F(user, write_fault) {
reg.size = sizeof(reg);
reg.name_args = (__u64)"__test_event u64 anon";
+ reg.enable_bit = 31;
+ reg.enable_addr = (__u64)&self->check;
+ reg.enable_size = sizeof(self->check);
anon = mmap(NULL, l, PROT_READ, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
ASSERT_NE(MAP_FAILED, anon);
@@ -316,7 +321,6 @@ TEST_F(user, write_fault) {
/* Register should work */
ASSERT_EQ(0, ioctl(self->data_fd, DIAG_IOCSREG, ®));
ASSERT_EQ(0, reg.write_index);
- ASSERT_NE(0, reg.status_bit);
/* Write should work normally */
ASSERT_NE(-1, writev(self->data_fd, (const struct iovec *)io, 2));
@@ -333,24 +337,17 @@ TEST_F(user, write_validator) {
int loc, bytes;
char data[8];
int before = 0, after = 0;
- int page_size = sysconf(_SC_PAGESIZE);
- char *status_page;
-
- status_page = mmap(NULL, page_size, PROT_READ, MAP_SHARED,
- self->status_fd, 0);
reg.size = sizeof(reg);
reg.name_args = (__u64)"__test_event __rel_loc char[] data";
+ reg.enable_bit = 31;
+ reg.enable_addr = (__u64)&self->check;
+ reg.enable_size = sizeof(self->check);
/* Register should work */
ASSERT_EQ(0, ioctl(self->data_fd, DIAG_IOCSREG, ®));
ASSERT_EQ(0, reg.write_index);
- ASSERT_NE(0, reg.status_bit);
-
- /* MMAP should work and be zero'd */
- ASSERT_NE(MAP_FAILED, status_page);
- ASSERT_NE(NULL, status_page);
- ASSERT_EQ(0, status_check(status_page, reg.status_bit));
+ ASSERT_EQ(0, self->check);
io[0].iov_base = ®.write_index;
io[0].iov_len = sizeof(reg.write_index);
@@ -369,7 +366,7 @@ TEST_F(user, write_validator) {
ASSERT_NE(-1, write(self->enable_fd, "1", sizeof("1")))
/* Event should now be enabled */
- ASSERT_NE(0, status_check(status_page, reg.status_bit));
+ ASSERT_EQ(1 << reg.enable_bit, self->check);
/* Full in-bounds write should work */
before = trace_bytes();
@@ -409,71 +406,88 @@ TEST_F(user, print_fmt) {
int ret;
ret = check_print_fmt("__test_event __rel_loc char[] data",
- "print fmt: \"data=%s\", __get_rel_str(data)");
+ "print fmt: \"data=%s\", __get_rel_str(data)",
+ &self->check);
ASSERT_EQ(0, ret);
ret = check_print_fmt("__test_event __data_loc char[] data",
- "print fmt: \"data=%s\", __get_str(data)");
+ "print fmt: \"data=%s\", __get_str(data)",
+ &self->check);
ASSERT_EQ(0, ret);
ret = check_print_fmt("__test_event s64 data",
- "print fmt: \"data=%lld\", REC->data");
+ "print fmt: \"data=%lld\", REC->data",
+ &self->check);
ASSERT_EQ(0, ret);
ret = check_print_fmt("__test_event u64 data",
- "print fmt: \"data=%llu\", REC->data");
+ "print fmt: \"data=%llu\", REC->data",
+ &self->check);
ASSERT_EQ(0, ret);
ret = check_print_fmt("__test_event s32 data",
- "print fmt: \"data=%d\", REC->data");
+ "print fmt: \"data=%d\", REC->data",
+ &self->check);
ASSERT_EQ(0, ret);
ret = check_print_fmt("__test_event u32 data",
- "print fmt: \"data=%u\", REC->data");
+ "print fmt: \"data=%u\", REC->data",
+ &self->check);
ASSERT_EQ(0, ret);
ret = check_print_fmt("__test_event int data",
- "print fmt: \"data=%d\", REC->data");
+ "print fmt: \"data=%d\", REC->data",
+ &self->check);
ASSERT_EQ(0, ret);
ret = check_print_fmt("__test_event unsigned int data",
- "print fmt: \"data=%u\", REC->data");
+ "print fmt: \"data=%u\", REC->data",
+ &self->check);
ASSERT_EQ(0, ret);
ret = check_print_fmt("__test_event s16 data",
- "print fmt: \"data=%d\", REC->data");
+ "print fmt: \"data=%d\", REC->data",
+ &self->check);
ASSERT_EQ(0, ret);
ret = check_print_fmt("__test_event u16 data",
- "print fmt: \"data=%u\", REC->data");
+ "print fmt: \"data=%u\", REC->data",
+ &self->check);
ASSERT_EQ(0, ret);
ret = check_print_fmt("__test_event short data",
- "print fmt: \"data=%d\", REC->data");
+ "print fmt: \"data=%d\", REC->data",
+ &self->check);
ASSERT_EQ(0, ret);
ret = check_print_fmt("__test_event unsigned short data",
- "print fmt: \"data=%u\", REC->data");
+ "print fmt: \"data=%u\", REC->data",
+ &self->check);
ASSERT_EQ(0, ret);
ret = check_print_fmt("__test_event s8 data",
- "print fmt: \"data=%d\", REC->data");
+ "print fmt: \"data=%d\", REC->data",
+ &self->check);
ASSERT_EQ(0, ret);
ret = check_print_fmt("__test_event u8 data",
- "print fmt: \"data=%u\", REC->data");
+ "print fmt: \"data=%u\", REC->data",
+ &self->check);
ASSERT_EQ(0, ret);
ret = check_print_fmt("__test_event char data",
- "print fmt: \"data=%d\", REC->data");
+ "print fmt: \"data=%d\", REC->data",
+ &self->check);
ASSERT_EQ(0, ret);
ret = check_print_fmt("__test_event unsigned char data",
- "print fmt: \"data=%u\", REC->data");
+ "print fmt: \"data=%u\", REC->data",
+ &self->check);
ASSERT_EQ(0, ret);
ret = check_print_fmt("__test_event char[4] data",
- "print fmt: \"data=%s\", REC->data");
+ "print fmt: \"data=%s\", REC->data",
+ &self->check);
ASSERT_EQ(0, ret);
}
diff --git a/tools/testing/selftests/user_events/perf_test.c b/tools/testing/selftests/user_events/perf_test.c
index 31505642aa9b..a070258d4449 100644
--- a/tools/testing/selftests/user_events/perf_test.c
+++ b/tools/testing/selftests/user_events/perf_test.c
@@ -19,7 +19,6 @@
#include "../kselftest_harness.h"
const char *data_file = "/sys/kernel/tracing/user_events_data";
-const char *status_file = "/sys/kernel/tracing/user_events_status";
const char *id_file = "/sys/kernel/tracing/events/user_events/__test_event/id";
const char *fmt_file = "/sys/kernel/tracing/events/user_events/__test_event/format";
@@ -35,11 +34,6 @@ static long perf_event_open(struct perf_event_attr *pe, pid_t pid,
return syscall(__NR_perf_event_open, pe, pid, cpu, group_fd, flags);
}
-static inline int status_check(char *status_page, int status_bit)
-{
- return status_page[status_bit >> 3] & (1 << (status_bit & 7));
-}
-
static int get_id(void)
{
FILE *fp = fopen(id_file, "r");
@@ -88,45 +82,38 @@ static int get_offset(void)
}
FIXTURE(user) {
- int status_fd;
int data_fd;
+ int check;
};
FIXTURE_SETUP(user) {
- self->status_fd = open(status_file, O_RDONLY);
- ASSERT_NE(-1, self->status_fd);
-
self->data_fd = open(data_file, O_RDWR);
ASSERT_NE(-1, self->data_fd);
}
FIXTURE_TEARDOWN(user) {
- close(self->status_fd);
close(self->data_fd);
}
TEST_F(user, perf_write) {
struct perf_event_attr pe = {0};
struct user_reg reg = {0};
- int page_size = sysconf(_SC_PAGESIZE);
- char *status_page;
struct event event;
struct perf_event_mmap_page *perf_page;
+ int page_size = sysconf(_SC_PAGESIZE);
int id, fd, offset;
__u32 *val;
reg.size = sizeof(reg);
reg.name_args = (__u64)"__test_event u32 field1; u32 field2";
-
- status_page = mmap(NULL, page_size, PROT_READ, MAP_SHARED,
- self->status_fd, 0);
- ASSERT_NE(MAP_FAILED, status_page);
+ reg.enable_bit = 31;
+ reg.enable_addr = (__u64)&self->check;
+ reg.enable_size = sizeof(self->check);
/* Register should work */
ASSERT_EQ(0, ioctl(self->data_fd, DIAG_IOCSREG, ®));
ASSERT_EQ(0, reg.write_index);
- ASSERT_NE(0, reg.status_bit);
- ASSERT_EQ(0, status_check(status_page, reg.status_bit));
+ ASSERT_EQ(0, self->check);
/* Id should be there */
id = get_id();
@@ -149,7 +136,7 @@ TEST_F(user, perf_write) {
ASSERT_NE(MAP_FAILED, perf_page);
/* Status should be updated */
- ASSERT_NE(0, status_check(status_page, reg.status_bit));
+ ASSERT_EQ(1 << reg.enable_bit, self->check);
event.index = reg.write_index;
event.field1 = 0xc001;
@@ -165,6 +152,12 @@ TEST_F(user, perf_write) {
/* Ensure correct */
ASSERT_EQ(event.field1, *val++);
ASSERT_EQ(event.field2, *val++);
+
+ munmap(perf_page, page_size * 2);
+ close(fd);
+
+ /* Status should be updated */
+ ASSERT_EQ(0, self->check);
}
int main(int argc, char **argv)
--
2.39.1
next prev parent reply other threads:[~2023-03-29 19:46 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-29 19:45 [for-next][PATCH 00/25] tracing: Updates for 6.4 Steven Rostedt
2023-03-29 19:45 ` [for-next][PATCH 01/25] fprobe: Pass entry_data to handlers Steven Rostedt
2023-03-29 19:45 ` [for-next][PATCH 02/25] lib/test_fprobe: Add private entry_data testcases Steven Rostedt
2023-03-29 19:45 ` [for-next][PATCH 03/25] fprobe: Add nr_maxactive to specify rethook_node pool size Steven Rostedt
2023-03-29 19:45 ` [for-next][PATCH 04/25] lib/test_fprobe: Add a test case for nr_maxactive Steven Rostedt
2023-03-29 19:45 ` [for-next][PATCH 05/25] fprobe: Skip exit_handler if entry_handler returns !0 Steven Rostedt
2023-03-29 19:45 ` [for-next][PATCH 06/25] lib/test_fprobe: Add a testcase for skipping exit_handler Steven Rostedt
2023-03-29 19:45 ` [for-next][PATCH 07/25] docs: tracing: Update fprobe documentation Steven Rostedt
2023-03-29 19:45 ` [for-next][PATCH 08/25] selftests: use canonical ftrace path Steven Rostedt
2023-03-29 19:45 ` [for-next][PATCH 09/25] leaking_addresses: also skip " Steven Rostedt
2023-03-29 19:45 ` [for-next][PATCH 10/25] tools/kvm_stat: use " Steven Rostedt
2023-03-29 19:45 ` [for-next][PATCH 11/25] tracing: Add "fields" option to show raw trace event fields Steven Rostedt
2023-03-29 19:45 ` [for-next][PATCH 12/25] tracing/user_events: Split header into uapi and kernel Steven Rostedt
2023-03-29 19:45 ` [for-next][PATCH 13/25] tracing/user_events: Track fork/exec/exit for mm lifetime Steven Rostedt
2023-03-29 19:45 ` [for-next][PATCH 14/25] tracing/user_events: Use remote writes for event enablement Steven Rostedt
2023-03-29 19:45 ` [for-next][PATCH 15/25] tracing/user_events: Fixup enable faults asyncly Steven Rostedt
2023-03-29 19:45 ` [for-next][PATCH 16/25] tracing/user_events: Add ioctl for disabling addresses Steven Rostedt
2023-03-29 19:45 ` Steven Rostedt [this message]
2023-03-29 19:45 ` [for-next][PATCH 18/25] tracing/user_events: Add ABI self-test Steven Rostedt
2023-03-29 19:45 ` [for-next][PATCH 19/25] tracing/user_events: Use write ABI in example Steven Rostedt
2023-03-29 19:45 ` [for-next][PATCH 20/25] tracing/user_events: Update documentation for ABI Steven Rostedt
2023-03-29 19:45 ` [for-next][PATCH 21/25] tracing/user_events: Charge event allocs to cgroups Steven Rostedt
2023-03-29 19:45 ` [for-next][PATCH 22/25] tracing/user_events: Limit global user_event count Steven Rostedt
2023-03-29 19:45 ` [for-next][PATCH 23/25] tracing/user_events: Align structs with tabs for readability Steven Rostedt
2023-03-29 19:45 ` [for-next][PATCH 24/25] tracing/user_events: Use print_format_fields() for trace output Steven Rostedt
2023-03-29 19:45 ` [for-next][PATCH 25/25] tracing: Unbreak user events Steven Rostedt
2023-03-29 20:29 ` Steven Rostedt
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20230329194552.474991854@goodmis.org \
--to=rostedt@goodmis.org \
--cc=akpm@linux-foundation.org \
--cc=beaub@linux.microsoft.com \
--cc=linux-kernel@vger.kernel.org \
--cc=mark.rutland@arm.com \
--cc=mhiramat@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.