[igt-dev] [PATCH i-g-t 4/6] tools: add i915 perf recorder tool

Lionel Landwerlin
2020-02-17T14:22:17Z

Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
---
lib/i915-perf.pc.in | 1 +
lib/i915/perf_data.h | 118 ++
lib/meson.build | 1 +
lib/tests/i915_perf_data_alignment.c | 40 +
lib/tests/meson.build | 1 +
tools/i915-perf/i915_perf_control.c | 133 +++
tools/i915-perf/i915_perf_recorder.c | 1052 +++++++++++++++++
tools/i915-perf/i915_perf_recorder_commands.h | 39 +
tools/i915-perf/meson.build | 11 +
9 files changed, 1396 insertions(+)
create mode 100644 lib/i915/perf_data.h
create mode 100644 lib/tests/i915_perf_data_alignment.c
create mode 100644 tools/i915-perf/i915_perf_control.c
create mode 100644 tools/i915-perf/i915_perf_recorder.c
create mode 100644 tools/i915-perf/i915_perf_recorder_commands.h

diff --git a/lib/i915-perf.pc.in b/lib/i915-perf.pc.in
index e72efdc3..8cfa3dbe 100644
--- a/lib/i915-perf.pc.in
+++ b/lib/i915-perf.pc.in
@@ -6,5 +6,6 @@ includedir=@includedir@
Name: i915-perf
Description: i915 perf library
Version: @version@
+Requires: libdrm
Libs: -L${libdir} -li915_perf
Cflags: -I${includedir}/i915-perf
diff --git a/lib/i915/perf_data.h b/lib/i915/perf_data.h
new file mode 100644
index 00000000..fb3556f6
--- /dev/null
+++ b/lib/i915/perf_data.h
@@ -0,0 +1,118 @@
+/*
+ * Copyright (C) 2019 Intel Corporation
+ *
+ * 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 PERF_DATA_H
+#define PERF_DATA_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <i915_drm.h>
+
+/* The structures below are embedded in the i915-perf stream so as to
+ * provide metadata. The types used in the
+ * drm_i915_perf_record_header.type are defined in
+ * intel_perf_record_type.
+ */
+
+#include <stdint.h>
+
+enum intel_perf_record_type {
+ /* Start at 65536, which is pretty safe since after 3years the
+ * kernel hasn't defined more than 3 entries.
+ */
+
+ INTEL_PERF_RECORD_TYPE_VERSION = 1 << 16,
+
+ /* intel_perf_record_device_info */
+ INTEL_PERF_RECORD_TYPE_DEVICE_INFO,
+
+ /* intel_perf_record_device_topology */
+ INTEL_PERF_RECORD_TYPE_DEVICE_TOPOLOGY,
+
+ /* intel_perf_record_timestamp_correlation */
+ INTEL_PERF_RECORD_TYPE_TIMESTAMP_CORRELATION,
+};
+
+/* This structure cannot ever change. */
+struct intel_perf_record_version {
+ /* Version of the i915-perf file recording format (effectively
+ * versioning this file).
+ */
+ uint32_t version;
+
+#define INTEL_PERF_RECORD_VERSION (1)
+
+ uint32_t pad;
+} __attribute__((packed));
+
+struct intel_perf_record_device_info {
+ /* Frequency of the timestamps in the records. */
+ uint64_t timestamp_frequency;
+
+ /* PCI ID */
+ uint32_t device_id;
+
+ /* Stepping */
+ uint32_t device_revision;
+
+ /* GT min/max frequencies */
+ uint32_t gt_min_frequency;
+ uint32_t gt_max_frequency;
+
+ /* Engine */
+ uint32_t engine_class;
+ uint32_t engine_instance;
+
+ /* enum drm_i915_oa_format */
+ uint32_t oa_format;
+
+ /* Metric set name */
+ char metric_set_name[256];
+
+ /* Configuration identifier */
+ char metric_set_uuid[40];
+
+ uint32_t pad;
+ } __attribute__((packed));
+
+/* Topology as reported by i915 (variable length, aligned by the
+ * recorder). */
+struct intel_perf_record_device_topology {
+ struct drm_i915_query_topology_info topology;
+};
+
+/* Timestamp correlation between CPU/GPU. */
+struct intel_perf_record_timestamp_correlation {
+ /* In CLOCK_MONOTONIC */
+ uint64_t cpu_timestamp;
+
+ /* Engine timestamp associated with the OA unit */
+ uint64_t gpu_timestamp;
+} __attribute__((packed));
+
+#ifdef __cplusplus
+};
+#endif
+
+#endif /* PERF_DATA_H */
diff --git a/lib/meson.build b/lib/meson.build
index 4de1b211..1fe621ec 100644
--- a/lib/meson.build
+++ b/lib/meson.build
@@ -218,6 +218,7 @@ install_headers(
'igt_list.h',
'intel_chipset.h',
'i915/perf.h',
+ 'i915/perf_data.h',
subdir : 'i915-perf'
)

diff --git a/lib/tests/i915_perf_data_alignment.c b/lib/tests/i915_perf_data_alignment.c
new file mode 100644
index 00000000..8c14e0d0
--- /dev/null
+++ b/lib/tests/i915_perf_data_alignment.c
@@ -0,0 +1,40 @@
+/*
+ * Copyright © 2020 Intel Corporation
+ *
+ * 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 (including the next
+ * paragraph) 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 "igt_core.h"
+
+#include "igt_tests_common.h"
+
+#include "i915/perf_data.h"
+
+#define is_aligned(s) ((sizeof(s) % 8) == 0)
+
+igt_main
+{
+ igt_subtest("alignment") {
+ internal_assert(is_aligned(struct intel_perf_record_version));
+ internal_assert(is_aligned(struct intel_perf_record_device_info));
+ internal_assert(is_aligned(struct intel_perf_record_timestamp_correlation));
+ }
+}
diff --git a/lib/tests/meson.build b/lib/tests/meson.build
index e5066665..6cd8cb0e 100644
--- a/lib/tests/meson.build
+++ b/lib/tests/meson.build
@@ -16,6 +16,7 @@ lib_tests = [
'igt_simulation',
'igt_stats',
'igt_subtest_group',
+ 'i915_perf_data_alignment',
]

lib_fail_tests = [
diff --git a/tools/i915-perf/i915_perf_control.c b/tools/i915-perf/i915_perf_control.c
new file mode 100644
index 00000000..a8d0d30f
--- /dev/null
+++ b/tools/i915-perf/i915_perf_control.c
@@ -0,0 +1,133 @@
+/*
+ * Copyright (C) 2019 Intel Corporation
+ *
+ * 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 <getopt.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "i915_perf_recorder_commands.h"
+
+static void
+usage(const char *name)
+{
+ fprintf(stdout,
+ "Usage: %s [options]\n"
+ "\n"
+ " --help, -h Print this screen\n"
+ " --command-fifo, -f <path> Path to a command fifo\n"
+ " --dump, -d <path> Write a content of circular buffer to path\n",
+ name);
+}
+
+int
+main(int argc, char *argv[])
+{
+ const struct option long_options[] = {
+ {"help", no_argument, 0, 'h'},
+ {"dump", required_argument, 0, 'd'},
+ {"command-fifo", required_argument, 0, 'f'},
+ {"quit", no_argument, 0, 'q'},
+ {0, 0, 0, 0}
+ };
+ const char *command_fifo = I915_PERF_RECORD_FIFO_PATH, *dump_file = NULL;
+ FILE *command_fifo_file;
+ int opt;
+ bool quit = false;
+
+ while ((opt = getopt_long(argc, argv, "hd:f:q", long_options, NULL)) != -1) {
+ switch (opt) {
+ case 'h':
+ usage(argv[0]);
+ return EXIT_SUCCESS;
+ case 'd':
+ dump_file = optarg;
+ break;
+ case 'f':
+ command_fifo = optarg;
+ break;
+ case 'q':
+ quit = true;
+ break;
+ default:
+ fprintf(stderr, "Internal error: "
+ "unexpected getopt value: %d\n", opt);
+ usage(argv[0]);
+ return EXIT_FAILURE;
+ }
+ }
+
+ if (!command_fifo)
+ return EXIT_FAILURE;
+
+ command_fifo_file = fopen(command_fifo, "r+");
+ if (!command_fifo_file) {
+ fprintf(stderr, "Unable to open command file\n");
+ return EXIT_FAILURE;
+ }
+
+ if (dump_file) {
+ if (dump_file[0] == '/') {
+ uint32_t total_len =
+ sizeof(struct recorder_command_base) + strlen(dump_file) + 1;
+ struct {
+ struct recorder_command_base base;
+ struct recorder_command_dump dump;
+ } *data = malloc(total_len);
+
+ data->base.command = RECORDER_COMMAND_DUMP;
+ data->base.size = total_len;
+ snprintf((char *) data->dump.path, strlen(dump_file) + 1, "%s", dump_file);
+
+ fwrite(data, total_len, 1, command_fifo_file);
+ } else {
+ char *cwd = get_current_dir_name();
+ uint32_t path_len = strlen(cwd) + 1 + strlen(dump_file) + 1;
+ uint32_t total_len = sizeof(struct recorder_command_base) + path_len;
+ struct {
+ struct recorder_command_base base;
+ struct recorder_command_dump dump;
+ } *data = malloc(total_len);
+
+ data->base.command = RECORDER_COMMAND_DUMP;
+ data->base.size = total_len;
+ snprintf((char *) data->dump.path, path_len, "%s/%s", cwd, dump_file);
+
+ fwrite(data, total_len, 1, command_fifo_file);
+ }
+ }
+
+ if (quit) {
+ struct recorder_command_base base = {
+ .command = RECORDER_COMMAND_QUIT,
+ .size = sizeof(base),
+ };
+
+ fwrite(&base, sizeof(base), 1, command_fifo_file);
+ }
+
+ fclose(command_fifo_file);
+
+ return EXIT_SUCCESS;
+}
diff --git a/tools/i915-perf/i915_perf_recorder.c b/tools/i915-perf/i915_perf_recorder.c
new file mode 100644
index 00000000..760cabf1
--- /dev/null
+++ b/tools/i915-perf/i915_perf_recorder.c
@@ -0,0 +1,1052 @@
+/*
+ * Copyright (C) 2019 Intel Corporation
+ *
+ * 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 <assert.h>
+#include <dirent.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <getopt.h>
+#include <inttypes.h>
+#include <poll.h>
+#include <signal.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/ioctl.h>
+#include <sys/stat.h>
+#include <sys/sysmacros.h>
+#include <sys/time.h>
+#include <sys/types.h>
+#include <time.h>
+#include <unistd.h>
+
+#include <i915_drm.h>
+
+#include "igt_core.h"
+#include "intel_chipset.h"
+#include "i915/perf.h"
+#include "i915/perf_data.h"
+
+#include "i915_perf_recorder_commands.h"
+
+#define ALIGN(v, a) (((v) + (a)-1) & ~((a)-1))
+#define ARRAY_SIZE(arr) (sizeof(arr)/sizeof((arr)[0]))
+#define MAX(a,b) ((a) > (b) ? (a) : (b))
+#define MIN(a,b) ((a) < (b) ? (a) : (b))
+
+struct circular_buffer {
+ char *data;
+ size_t allocated_size;
+ size_t size;
+ size_t beginpos;
+ size_t endpos;
+};
+
+struct chunk {
+ char *data;
+ size_t len;
+};
+
+static size_t
+circular_available_size(const struct circular_buffer *buffer)
+{
+ assert(buffer->size <= buffer->allocated_size);
+ return buffer->allocated_size - buffer->size;
+}
+
+static void
+get_chunks(struct chunk *chunks, struct circular_buffer *buffer, bool write, size_t len)
+{
+ size_t offset = write ? buffer->endpos : buffer->beginpos;
+
+ if (write)
+ assert(circular_available_size(buffer) >= len);
+ else
+ assert(buffer->size >= len);
+
+ chunks[0].data = &buffer->data[offset];
+
+ if ((offset + len) > buffer->allocated_size) {
+ chunks[0].len = buffer->allocated_size - offset;
+ chunks[1].data = buffer->data;
+ chunks[1].len = len - (buffer->allocated_size - offset);
+ } else {
+ chunks[0].len = len;
+ chunks[1].data = NULL;
+ chunks[1].len = 0;
+ }
+}
+
+static ssize_t
+circular_buffer_read(void *c, char *buf, size_t size)
+{
+ struct circular_buffer *buffer = c;
+ struct chunk chunks[2];
+
+ if (buffer->size < size)
+ return -1;
+
+ get_chunks(chunks, buffer, false, size);
+
+ memcpy(buf, chunks[0].data, chunks[0].len);
+ memcpy(buf + chunks[0].len, chunks[1].data, chunks[1].len);
+ buffer->beginpos = (buffer->beginpos + size) % buffer->allocated_size;
+ buffer->size -= size;
+
+ return size;
+}
+
+static size_t
+peek_item_size(struct circular_buffer *buffer)
+{
+ struct drm_i915_perf_record_header header;
+ struct chunk chunks[2];
+
+ if (!buffer->size)
+ return 0;
+
+ assert(buffer->size >= sizeof(header));
+
+ get_chunks(chunks, buffer, false, sizeof(header));
+ memcpy(&header, chunks[0].data, chunks[0].len);
+ memcpy((char *) &header + chunks[0].len, chunks[1].data, chunks[1].len);
+
+ return header.size;
+}
+
+static void
+circular_shrink(struct circular_buffer *buffer, size_t size)
+{
+ size_t shrank = 0, item_size;
+
+ assert(size <= buffer->allocated_size);
+
+ while (shrank < size && buffer->size > (item_size = peek_item_size(buffer))) {
+ assert(item_size > 0 && item_size <= buffer->allocated_size);
+
+ buffer->beginpos = (buffer->beginpos + item_size) % buffer->allocated_size;
+ buffer->size -= item_size;
+
+ shrank += item_size;
+ }
+}
+
+static ssize_t
+circular_buffer_write(void *c, const char *buf, size_t _size)
+{
+ struct circular_buffer *buffer = c;
+ size_t size = _size;
+
+ while (size) {
+ size_t avail = circular_available_size(buffer), item_size;
+ struct chunk chunks[2];
+
+ /* Make space in the buffer if there is too much data. */
+ if (avail < size)
+ circular_shrink(buffer, size - avail);
+
+ item_size = MIN(circular_available_size(buffer), size);
+
+ get_chunks(chunks, buffer, true, item_size);
+
+ memcpy(chunks[0].data, buf, chunks[0].len);
+ memcpy(chunks[1].data, buf + chunks[0].len, chunks[1].len);
+
+ buf += item_size;
+ size -= item_size;
+
+ buffer->endpos = (buffer->endpos + item_size) % buffer->allocated_size;
+ buffer->size += item_size;
+ }
+
+ return _size;
+}
+
+static int
+circular_buffer_seek(void *c, off64_t *offset, int whence)
+{
+ return -1;
+}
+
+static int
+circular_buffer_close(void *c)
+{
+ return 0;
+}
+
+cookie_io_functions_t circular_buffer_functions = {
+ .read = circular_buffer_read,
+ .write = circular_buffer_write,
+ .seek = circular_buffer_seek,
+ .close = circular_buffer_close,
+};
+
+
+static bool
+read_file_uint64(const char *file, uint64_t *value)
+{
+ char buf[32];
+ int fd, n;
+
+ fd = open(file, 0);
+ if (fd < 0)
+ return false;
+ n = read(fd, buf, sizeof (buf) - 1);
+ close(fd);
+ if (n < 0)
+ return false;
+
+ buf[n] = '\0';
+ *value = strtoull(buf, 0, 0);
+
+ return true;
+}
+
+static uint32_t
+read_device_param(const char *stem, int id, const char *param)
+{
+ char *name;
+ int ret = asprintf(&name, "/sys/class/drm/%s%u/device/%s", stem, id, param);
+ uint64_t value;
+ bool success;
+
+ assert(ret != -1);
+
+ success = read_file_uint64(name, &value);
+ free(name);
+
+ return success ? value : 0;
+}
+
+static int
+find_intel_render_node(void)
+{
+ for (int i = 128; i < (128 + 16); i++) {
+ if (read_device_param("renderD", i, "vendor") == 0x8086)
+ return i;
+ }
+
+ return -1;
+}
+
+static int
+open_render_node(uint32_t *devid)
+{
+ char *name;
+ int ret;
+ int fd;
+
+ int render = find_intel_render_node();
+ if (render < 0)
+ return -1;
+
+ ret = asprintf(&name, "/dev/dri/renderD%u", render);
+ assert(ret != -1);
+
+ *devid = read_device_param("renderD", render, "device");
+
+ fd = open(name, O_RDWR);
+ free(name);
+
+ return fd;
+}
+
+static uint32_t
+oa_exponent_for_period(uint64_t device_timestamp_frequency, double period)
+{
+ uint64_t period_ns = 1000 * 1000 * 1000 * period;
+ uint64_t device_periods[32];
+
+ for (uint32_t i = 0; i < ARRAY_SIZE(device_periods); i++)
+ device_periods[i] = 1000000000ull * (1u << i) / device_timestamp_frequency;
+
+ for (uint32_t i = 1; i < ARRAY_SIZE(device_periods); i++) {
+ if (period_ns >= device_periods[i - 1] &&
+ period_ns < device_periods[i]) {
+ if ((device_periods[i] - period_ns) >
+ (period_ns - device_periods[i - 1]))
+ return i - 1;
+ return i;
+ }
+ }
+
+ return -1;
+}
+
+static int
+perf_ioctl(int fd, unsigned long request, void *arg)
+{
+ int ret;
+
+ do {
+ ret = ioctl(fd, request, arg);
+ } while (ret == -1 && (errno == EINTR || errno == EAGAIN));
+
+ return ret;
+}
+
+static uint64_t
+get_device_timestamp_frequency(const struct intel_device_info *devinfo, int drm_fd)
+{
+ drm_i915_getparam_t gp;
+ int timestamp_frequency;
+
+ gp.param = I915_PARAM_CS_TIMESTAMP_FREQUENCY;
+ gp.value = &timestamp_frequency;
+ if (perf_ioctl(drm_fd, DRM_IOCTL_I915_GETPARAM, &gp) == 0)
+ return timestamp_frequency;
+
+ if (devinfo->gen > 9) {
+ fprintf(stderr, "Unable to query timestamp frequency from i915, please update kernel.\n");
+ return 0;
+ }
+
+ fprintf(stderr, "Warning: unable to query timestamp frequency from i915, guessing values...\n");
+
+ if (devinfo->gen <= 8)
+ return 12500000;
+ if (devinfo->is_broxton)
+ return 19200000;
+ return 12000000;
+}
+
+struct recording_context {
+ int drm_fd;
+ int perf_fd;
+
+ uint32_t devid;
+ uint64_t timestamp_frequency;
+
+ const struct intel_device_info *devinfo;
+
+ struct drm_i915_query_topology_info *topology;
+ uint32_t topology_size;
+
+ struct intel_perf *perf;
+ struct intel_perf_metric_set *metric_set;
+
+ uint32_t oa_exponent;
+
+ struct circular_buffer circular_buffer;
+ FILE *output_stream;
+
+ const char *command_fifo;
+ int command_fifo_fd;
+};
+
+static int
+perf_open(struct recording_context *ctx)
+{
+ uint64_t properties[DRM_I915_PERF_PROP_MAX * 2];
+ struct drm_i915_perf_open_param param;
+ int p = 0, stream_fd;
+
+ properties[p++] = DRM_I915_PERF_PROP_SAMPLE_OA;
+ properties[p++] = true;
+
+ properties[p++] = DRM_I915_PERF_PROP_OA_METRICS_SET;
+ properties[p++] = ctx->metric_set->perf_oa_metrics_set;
+
+ properties[p++] = DRM_I915_PERF_PROP_OA_FORMAT;
+ properties[p++] = ctx->metric_set->perf_oa_format;
+
+ properties[p++] = DRM_I915_PERF_PROP_OA_EXPONENT;
+ properties[p++] = ctx->oa_exponent;
+
+ memset(&param, 0, sizeof(param));
+ param.flags = 0;
+ param.flags |= I915_PERF_FLAG_FD_CLOEXEC | I915_PERF_FLAG_FD_NONBLOCK;
+ param.properties_ptr = (uintptr_t)properties;
+ param.num_properties = p / 2;
+
+ stream_fd = perf_ioctl(ctx->drm_fd, DRM_IOCTL_I915_PERF_OPEN, &param);
+ return stream_fd;
+}
+
+static bool quit = false;
+
+static void
+sigint_handler(int val)
+{
+ quit = true;
+}
+
+static bool
+write_version(FILE *output, struct recording_context *ctx)
+{
+ struct intel_perf_record_version version = {
+ .version = INTEL_PERF_RECORD_VERSION,
+ };
+ struct drm_i915_perf_record_header header = {
+ .type = INTEL_PERF_RECORD_TYPE_VERSION,
+ .size = sizeof(header) + sizeof(version),
+ };
+
+ if (fwrite(&header, sizeof(header), 1, output) != 1)
+ return false;
+
+ if (fwrite(&version, sizeof(version), 1, output) != 1)
+ return false;
+
+ return true;
+}
+
+static bool
+write_header(FILE *output, struct recording_context *ctx)
+{
+ struct intel_perf_record_device_info info = {
+ .timestamp_frequency = ctx->timestamp_frequency,
+ .device_id = ctx->perf->devinfo.devid,
+ .device_revision = ctx->perf->devinfo.revision,
+ .gt_min_frequency = ctx->perf->devinfo.gt_min_freq,
+ .gt_max_frequency = ctx->perf->devinfo.gt_max_freq,
+ .oa_format = ctx->metric_set->perf_oa_format,
+ .engine_class = I915_ENGINE_CLASS_RENDER,
+ .engine_instance = 0,
+ };
+ struct drm_i915_perf_record_header header = {
+ .type = INTEL_PERF_RECORD_TYPE_DEVICE_INFO,
+ .size = sizeof(header) + sizeof(info),
+ };
+
+ snprintf(info.metric_set_name, sizeof(info.metric_set_name),
+ "%s", ctx->metric_set->symbol_name);
+ snprintf(info.metric_set_uuid, sizeof(info.metric_set_uuid),
+ "%s", ctx->metric_set->hw_config_guid);
+
+ if (fwrite(&header, sizeof(header), 1, output) != 1)
+ return false;
+
+ if (fwrite(&info, sizeof(info), 1, output) != 1)
+ return false;
+
+ return true;
+}
+
+static struct drm_i915_query_topology_info *
+get_topology(int drm_fd, uint32_t *topology_size)
+{
+ struct drm_i915_query query = {};
+ struct drm_i915_query_topology_info *topo_info;
+ struct drm_i915_query_item item = {
+ .query_id = DRM_I915_QUERY_TOPOLOGY_INFO,
+ };
+ int ret;
+
+ query.num_items = 1;
+ query.items_ptr = (uintptr_t) &item;
+
+ /* Maybe not be available on older kernels. */
+ ret = perf_ioctl(drm_fd, DRM_IOCTL_I915_QUERY, &query);
+ if (ret < 0)
+ return NULL;
+
+ assert(item.length > 0);
+ *topology_size = item.length;
+ topo_info = malloc(item.length);
+ item.data_ptr = (uintptr_t) topo_info;
+
+ ret = perf_ioctl(drm_fd, DRM_IOCTL_I915_QUERY, &query);
+ assert(ret == 0);
+
+ return topo_info;
+}
+
+static bool
+write_topology(FILE *output, struct recording_context *ctx)
+{
+ struct drm_i915_perf_record_header header = {
+ .type = INTEL_PERF_RECORD_TYPE_DEVICE_TOPOLOGY,
+ };
+ char pad[8] = { 0, };
+
+ header.size = sizeof(header) + ctx->topology_size;
+ if (fwrite(&header, sizeof(header), 1, output) != 1)
+ return false;
+
+ if (fwrite(ctx->topology, ctx->topology_size, 1, output) != 1)
+ return false;
+
+ /* Align the size to align all other packets to 8 bytes. */
+ if (ctx->topology_size % 8) {
+ if (fwrite(pad, ctx->topology_size % 8, 1, output) != 1)
+ return false;
+ }
+
+ return true;
+}
+
+static bool
+write_i915_perf_data(FILE *output, int perf_fd)
+{
+ ssize_t ret;
+ char data[4096];
+
+ while ((ret = read(perf_fd, data, sizeof(data))) > 0 ||
+ errno == EINTR) {
+ if (fwrite(data, ret, 1, output) != 1)
+ return false;
+ }
+
+ return true;
+}
+
+static uint64_t timespec_diff(struct timespec *begin,
+ struct timespec *end)
+{
+ return 1000000000ull * (end->tv_sec - begin->tv_sec) + end->tv_nsec - begin->tv_nsec;
+}
+
+static clock_t correlation_clock_id = CLOCK_MONOTONIC;
+
+static bool
+get_correlation_timestamps(struct intel_perf_record_timestamp_correlation *corr, int drm_fd)
+{
+ struct drm_i915_reg_read reg_read;
+ struct {
+ struct timespec cpu_ts_begin;
+ struct timespec cpu_ts_end;
+ uint64_t gpu_ts;
+ } attempts[3];
+ uint32_t best = 0;
+
+#define RENDER_RING_TIMESTAMP 0x2358
+
+ reg_read.offset = RENDER_RING_TIMESTAMP | I915_REG_READ_8B_WA;
+
+ /* Gather 3 correlations. */
+ for (uint32_t i = 0; i < ARRAY_SIZE(attempts); i++) {
+ clock_gettime(correlation_clock_id, &attempts[i].cpu_ts_begin);
+ if (perf_ioctl(drm_fd, DRM_IOCTL_I915_REG_READ, &reg_read) < 0)
+ return false;
+ clock_gettime(correlation_clock_id, &attempts[i].cpu_ts_end);
+
+ attempts[i].gpu_ts = reg_read.val;
+ }
+
+ /* Now select the best. */
+ for (uint32_t i = 1; i < ARRAY_SIZE(attempts); i++) {
+ if (timespec_diff(&attempts[i].cpu_ts_begin,
+ &attempts[i].cpu_ts_end) <
+ timespec_diff(&attempts[best].cpu_ts_begin,
+ &attempts[best].cpu_ts_end))
+ best = i;
+ }
+
+ corr->cpu_timestamp =
+ (attempts[best].cpu_ts_begin.tv_sec * 1000000000ull +
+ attempts[best].cpu_ts_begin.tv_nsec) +
+ timespec_diff(&attempts[best].cpu_ts_begin,
+ &attempts[best].cpu_ts_end) / 2;
+ corr->gpu_timestamp = attempts[best].gpu_ts;
+
+ return true;
+}
+
+static bool
+write_saved_correlation_timestamps(FILE *output,
+ const struct intel_perf_record_timestamp_correlation *corr)
+{
+ struct drm_i915_perf_record_header header = {
+ .type = INTEL_PERF_RECORD_TYPE_TIMESTAMP_CORRELATION,
+ .size = sizeof(header) + sizeof(*corr),
+ };
+
+ if (fwrite(&header, sizeof(header), 1, output) != 1)
+ return false;
+
+ if (fwrite(corr, sizeof(*corr), 1, output) != 1)
+ return false;
+
+ return true;
+}
+
+static bool
+write_correlation_timestamps(FILE *output, int drm_fd)
+{
+ struct intel_perf_record_timestamp_correlation corr;
+
+ if (!get_correlation_timestamps(&corr, drm_fd))
+ return false;
+
+ return write_saved_correlation_timestamps(output, &corr);
+}
+
+static void
+read_command_file(struct recording_context *ctx)
+{
+ struct recorder_command_base header;
+ ssize_t ret = read(ctx->command_fifo_fd, &header, sizeof(header));
+
+ if (ret < 0)
+ return;
+
+ switch (header.command) {
+ case RECORDER_COMMAND_DUMP: {
+ uint32_t len = header.size - sizeof(header), offset = 0;
+ struct recorder_command_dump *dump = malloc(len);
+ FILE *file;
+
+ while (offset < len &&
+ ((ret = read(ctx->command_fifo_fd,
+ (void *) dump + offset, len - offset)) > 0
+ || errno == EAGAIN)) {
+ if (ret > 0)
+ offset += ret;
+ }
+
+ fprintf(stdout, "Writing circular buffer to %s\n", dump->path);
+
+ file = fopen((const char *) dump->path, "w+");
+ if (file) {
+ struct chunk chunks[2];
+
+ fflush(ctx->output_stream);
+ get_chunks(chunks, &ctx->circular_buffer,
+ false, ctx->circular_buffer.size);
+
+ if (!write_version(file, ctx) ||
+ !write_header(file, ctx) ||
+ !write_topology(file, ctx) ||
+ fwrite(chunks[0].data, chunks[0].len, 1, file) != 1 ||
+ (chunks[1].len > 0 &&
+ fwrite(chunks[1].data, chunks[1].len, 1, file) != 1) ||
+ !write_correlation_timestamps(file, ctx->drm_fd)) {
+ fprintf(stderr, "Unable to write circular buffer data in file '%s'\n",
+ dump->path);
+ }
+ fclose(file);
+ } else
+ fprintf(stderr, "Unable to write dump file '%s'\n", dump->path);
+
+ free(dump);
+ break;
+ }
+ case RECORDER_COMMAND_QUIT:
+ quit = true;
+ break;
+ default:
+ fprintf(stderr, "Unknown command 0x%x\n", header.command);
+ break;
+ }
+}
+
+static void
+print_metric_sets(const struct intel_perf *perf)
+{
+ struct intel_perf_metric_set *metric_set;
+ uint32_t longest_name = 0;
+
+ igt_list_for_each_entry(metric_set, &perf->metric_sets, link) {
+ longest_name = MAX(longest_name, strlen(metric_set->symbol_name));
+ }
+
+ igt_list_for_each_entry(metric_set, &perf->metric_sets, link) {
+ fprintf(stdout, "%s:%*s%s\n",
+ metric_set->symbol_name,
+ (int) (longest_name - strlen(metric_set->symbol_name) + 1), " ",
+ metric_set->name);
+ }
+}
+
+static void
+print_metric_set_counters(const struct intel_perf_metric_set *metric_set)
+{
+ uint32_t longest_name = 0;
+
+ for (uint32_t i = 0; i < metric_set->n_counters; i++) {
+ longest_name = MAX(longest_name, strlen(metric_set->counters[i].name));
+ }
+
+ fprintf(stdout, "%s (%s):\n", metric_set->symbol_name, metric_set->name);
+ for (uint32_t i = 0; i < metric_set->n_counters; i++) {
+ struct intel_perf_logical_counter *counter = &metric_set->counters[i];
+
+ fprintf(stdout, " %s:%*s%s\n",
+ counter->name,
+ (int)(longest_name - strlen(counter->name) + 1), " ",
+ counter->desc);
+ }
+}
+
+static void
+print_metric_sets_counters(struct intel_perf *perf)
+{
+ struct intel_perf_metric_set *metric_set;
+
+ igt_list_for_each_entry(metric_set, &perf->metric_sets, link)
+ print_metric_set_counters(metric_set);
+}
+
+static void
+usage(const char *name)
+{
+ fprintf(stdout,
+ "Usage: %s [options]\n"
+ "Recording tool for i915-perf.\n"
+ "\n"
+ " --help, -h Print this screen\n"
+ " --correlation-period, -c <value> Time period of timestamp correlation in seconds\n"
+ " (default = 1.0)\n"
+ " --perf-period, -p <value> Time period of i915-perf reports in seconds\n"
+ " (default = 0.001)\n"
+ " --metric, -m <value> i915 metric to sample with (use value=list to list all metrics)\n"
+ " --counters, -C List counters for a given metric and exit\n"
+ " --size, -s <value> Size of circular buffer to use in kilobytes\n"
+ " If specified, a maximum amount of <value> data will\n"
+ " be recorded.\n"
+ " --command-fifo, -f <path> Path to a command fifo, implies circular buffer\n"
+ " (To use with i915-perf-control)\n"
+ " --output, -o <path> Output file (default = i915_perf.record)\n"
+ " --cpu-clock, -k <path> Cpu clock to use for correlations\n"
+ " Values: boot, mono, mono_raw (default = mono)\n",
+ name);
+}
+
+static void
+teardown_recording_context(struct recording_context *ctx)
+{
+ if (ctx->topology)
+ free(ctx->topology);
+
+ if (ctx->perf)
+ intel_perf_free(ctx->perf);
+
+ if (ctx->command_fifo)
+ unlink(ctx->command_fifo);
+ if (ctx->command_fifo_fd != -1)
+ close(ctx->command_fifo_fd);
+
+ if (ctx->output_stream)
+ fclose(ctx->output_stream);
+
+ free(ctx->circular_buffer.data);
+
+ if (ctx->perf_fd != -1)
+ close(ctx->perf_fd);
+ if (ctx->drm_fd != -1)
+ close(ctx->drm_fd);
+}
+
+int
+main(int argc, char *argv[])
+{
+ const struct option long_options[] = {
+ {"help", no_argument, 0, 'h'},
+ {"correlation-period", required_argument, 0, 'c'},
+ {"perf-period", required_argument, 0, 'p'},
+ {"metric", required_argument, 0, 'm'},
+ {"counters", no_argument, 0, 'C'},
+ {"output", required_argument, 0, 'o'},
+ {"size", required_argument, 0, 's'},
+ {"command-fifo", required_argument, 0, 'f'},
+ {"cpu-clock", required_argument, 0, 'k'},
+ {0, 0, 0, 0}
+ };
+ const struct {
+ clock_t id;
+ const char *name;
+ } clock_names[] = {
+ { CLOCK_BOOTTIME, "boot" },
+ { CLOCK_MONOTONIC, "mono" },
+ { CLOCK_MONOTONIC_RAW, "mono_raw" },
+ };
+ double corr_period = 1.0, perf_period = 0.001;
+ const char *metric_name = NULL, *output_file = "i915_perf.record";
+ struct intel_perf_metric_set *metric_set;
+ struct intel_perf_record_timestamp_correlation initial_correlation;
+ struct timespec now;
+ uint64_t corr_period_ns, poll_time_ns;
+ uint32_t circular_size = 0;
+ int opt;
+ bool list_counters = false;
+ FILE *output = NULL;
+ struct recording_context ctx = {
+ .drm_fd = -1,
+ .perf_fd = -1,
+
+ .command_fifo = I915_PERF_RECORD_FIFO_PATH,
+ .command_fifo_fd = -1,
+ };
+
+ while ((opt = getopt_long(argc, argv, "hc:p:m:Co:s:f:k:", long_options, NULL)) != -1) {
+ switch (opt) {
+ case 'h':
+ usage(argv[0]);
+ return EXIT_SUCCESS;
+ case 'c':
+ corr_period = atof(optarg);
+ break;
+ case 'p':
+ perf_period = atof(optarg);
+ break;
+ case 'm':
+ metric_name = optarg;
+ break;
+ case 'C':
+ list_counters = true;
+ break;
+ case 'o':
+ output_file = optarg;
+ break;
+ case 's':
+ circular_size = MAX(8, atoi(optarg)) * 1024;
+ break;
+ case 'f':
+ ctx.command_fifo = optarg;
+ circular_size = 8 * 1024 * 1024;
+ break;
+ case 'k': {
+ bool found = false;
+ for (uint32_t i = 0; i < ARRAY_SIZE(clock_names); i++) {
+ if (!strcmp(clock_names[i].name, optarg)) {
+ correlation_clock_id = clock_names[i].id;
+ found = true;
+ break;
+ }
+ }
+ if (!found) {
+ fprintf(stderr, "Unknown clock name '%s'\n", optarg);
+ return EXIT_FAILURE;
+ }
+ break;
+ }
+ default:
+ fprintf(stderr, "Internal error: "
+ "unexpected getopt value: %d\n", opt);
+ usage(argv[0]);
+ return EXIT_FAILURE;
+ }
+ }
+
+ ctx.drm_fd = open_render_node(&ctx.devid);
+ if (ctx.drm_fd < 0) {
+ fprintf(stderr, "Unable to open device.\n");
+ return EXIT_FAILURE;
+ }
+
+ ctx.devinfo = intel_get_device_info(ctx.devid);
+ if (!ctx.devinfo) {
+ fprintf(stderr, "No device info found.\n");
+ goto fail;
+ }
+
+ fprintf(stdout, "Device name=%s gen=%i gt=%i id=0x%x\n",
+ ctx.devinfo->codename, ctx.devinfo->gen, ctx.devinfo->gt, ctx.devid);
+
+ ctx.topology = get_topology(ctx.drm_fd, &ctx.topology_size);
+ if (!ctx.topology) {
+ fprintf(stderr, "Unable to retrieve GPU topology (requires kernel 4.17+).\n");
+ goto fail;
+ }
+
+ ctx.perf = intel_perf_for_fd(ctx.drm_fd);
+ if (!ctx.perf) {
+ fprintf(stderr, "No perf data found.\n");
+ goto fail;
+ }
+
+ intel_perf_load_perf_configs(ctx.perf, ctx.drm_fd);
+
+ if (metric_name) {
+ if (!strcmp(metric_name, "list")) {
+ print_metric_sets(ctx.perf);
+ return EXIT_SUCCESS;
+ }
+
+ igt_list_for_each_entry(metric_set, &ctx.perf->metric_sets, link) {
+ if (!strcasecmp(metric_set->symbol_name, metric_name)) {
+ ctx.metric_set = metric_set;
+ break;
+ }
+ }
+ }
+
+ if (list_counters) {
+ if (!ctx.metric_set)
+ print_metric_sets_counters(ctx.perf);
+ else
+ print_metric_set_counters(ctx.metric_set);
+ teardown_recording_context(&ctx);
+ return EXIT_SUCCESS;
+ }
+
+ if (!ctx.metric_set) {
+ if (!metric_name)
+ fprintf(stderr, "No metric set specified.\n");
+ else
+ fprintf(stderr, "Unknown metric set '%s'.\n", metric_name);
+ print_metric_sets(ctx.perf);
+ goto fail;
+ }
+
+ intel_perf_load_perf_configs(ctx.perf, ctx.drm_fd);
+
+ ctx.timestamp_frequency = get_device_timestamp_frequency(ctx.devinfo, ctx.drm_fd);
+
+ signal(SIGINT, sigint_handler);
+
+ if (ctx.command_fifo) {
+ if (mkfifo(ctx.command_fifo,
+ S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH) != 0) {
+ fprintf(stderr, "Unable to create command fifo '%s': %s\n",
+ ctx.command_fifo, strerror(errno));
+ goto fail;
+ }
+
+ ctx.command_fifo_fd = open(ctx.command_fifo, O_RDWR);
+ if (ctx.command_fifo_fd < 0) {
+ fprintf(stderr, "Unable to open command fifo '%s': %s\n",
+ ctx.command_fifo, strerror(errno));
+ goto fail;
+ }
+ }
+
+ if (circular_size) {
+ ctx.circular_buffer.allocated_size = circular_size;
+ ctx.circular_buffer.data = malloc(circular_size);
+ if (!ctx.circular_buffer.data) {
+ fprintf(stderr, "Unable to allocate circular buffer\n");
+ goto fail;
+ }
+
+ ctx.output_stream = fopencookie(&ctx.circular_buffer, "w+",
+ circular_buffer_functions);
+ if (!ctx.output_stream) {
+ fprintf(stderr, "Unable to create circular buffer\n");
+ goto fail;
+ }
+
+ if (!get_correlation_timestamps(&initial_correlation, ctx.drm_fd)) {
+ fprintf(stderr, "Unable to correlation timestamps\n");
+ goto fail;
+ }
+
+ write_correlation_timestamps(ctx.output_stream, ctx.drm_fd);
+ fprintf(stdout,
+ "Recoding in internal circular buffer.\n"
+ "Use i915-perf-control to snapshot into file.\n");
+ } else {
+ output = fopen(output_file, "w+");
+ if (!output) {
+ fprintf(stderr, "Unable to open output file '%s'\n",
+ output_file);
+ goto fail;
+ }
+
+ if (!write_version(output, &ctx) ||
+ !write_header(output, &ctx) ||
+ !write_topology(output, &ctx) ||
+ !write_correlation_timestamps(output, ctx.drm_fd)) {
+ fprintf(stderr, "Unable to write header in file '%s'\n",
+ output_file);
+ goto fail;
+ }
+
+ ctx.output_stream = output;
+ fprintf(stdout, "Writing recoding to %s\n", output_file);
+ }
+
+ if (ctx.metric_set->perf_oa_metrics_set == 0) {
+ fprintf(stderr,
+ "Unable to load performance configuration, consider running:\n"
+ " sysctl dev.i915.perf_stream_paranoid=0\n");
+ goto fail;
+ }
+
+ ctx.oa_exponent = oa_exponent_for_period(ctx.timestamp_frequency, perf_period);
+ fprintf(stdout, "Opening perf stream with metric_id=%lu oa_exponent=%u\n",
+ ctx.metric_set->perf_oa_metrics_set, ctx.oa_exponent);
+
+ ctx.perf_fd = perf_open(&ctx);
+ if (ctx.perf_fd < 0) {
+ fprintf(stderr, "Unable to open i915 perf stream: %s\n",
+ strerror(errno));
+ goto fail;
+ }
+
+ corr_period_ns = corr_period * 1000000000ul;
+ poll_time_ns = corr_period_ns;
+
+ while (!quit) {
+ struct pollfd pollfd[2] = {
+ { ctx.perf_fd, POLLIN, 0 },
+ { ctx.command_fifo_fd, POLLIN, 0 },
+ };
+ uint64_t elapsed_ns;
+ int ret;
+
+ igt_gettime(&now);
+ ret = poll(pollfd, ctx.command_fifo_fd != -1 ? 2 : 1, poll_time_ns / 1000000);
+ if (ret < 0 && errno != EINTR) {
+ fprintf(stderr, "Failed to poll i915-perf stream: %s\n",
+ strerror(errno));
+ break;
+ }
+
+ if (ret > 0) {
+ if (pollfd[0].revents & POLLIN) {
+ if (!write_i915_perf_data(ctx.output_stream, ctx.perf_fd)) {
+ fprintf(stderr, "Failed to write i915-perf data: %s\n",
+ strerror(errno));
+ break;
+ }
+ }
+
+ if (pollfd[1].revents & POLLIN) {
+ read_command_file(&ctx);
+ }
+ }
+
+ elapsed_ns = igt_nsec_elapsed(&now);
+ if (elapsed_ns > poll_time_ns) {
+ poll_time_ns = corr_period_ns;
+ if (!write_correlation_timestamps(ctx.output_stream, ctx.drm_fd)) {
+ fprintf(stderr,
+ "Failed to write i915 timestamp correlation data: %s\n",
+ strerror(errno));
+ break;
+ }
+ } else {
+ poll_time_ns -= elapsed_ns;
+ }
+ }
+
+ fprintf(stdout, "Exiting...\n");
+
+ if (!write_correlation_timestamps(ctx.output_stream, ctx.drm_fd)) {
+ fprintf(stderr,
+ "Failed to write final i915 timestamp correlation data: %s\n",
+ strerror(errno));
+ }
+
+ teardown_recording_context(&ctx);
+
+ return EXIT_SUCCESS;
+
+ fail:
+ teardown_recording_context(&ctx);
+
+ return EXIT_FAILURE;
+}
diff --git a/tools/i915-perf/i915_perf_recorder_commands.h b/tools/i915-perf/i915_perf_recorder_commands.h
new file mode 100644
index 00000000..4855d80f
--- /dev/null
+++ b/tools/i915-perf/i915_perf_recorder_commands.h
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2019 Intel Corporation
+ *
+ * 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 <stdint.h>
+
+#define I915_PERF_RECORD_FIFO_PATH "/tmp/.i915-perf-record"
+
+enum recorder_command {
+ RECORDER_COMMAND_DUMP = 1,
+ RECORDER_COMMAND_QUIT,
+};
+
+struct recorder_command_base {
+ uint32_t command;
+ uint32_t size;
+};
+
+struct recorder_command_dump {
+ uint8_t path[0];
+};
diff --git a/tools/i915-perf/meson.build b/tools/i915-perf/meson.build
index 0ebdd185..9884dfd9 100644
--- a/tools/i915-perf/meson.build
+++ b/tools/i915-perf/meson.build
@@ -3,3 +3,14 @@ executable('i915-perf-configs',
include_directories: inc,
dependencies: [lib_igt_chipset, lib_igt_i915_perf],
install: true)
+
+executable('i915-perf-recorder',
+ [ 'i915_perf_recorder.c' ],
+ include_directories: inc,
+ dependencies: [lib_igt, lib_igt_i915_perf],
+ install: true)
+
+executable('i915-perf-control',
+ [ 'i915_perf_control.c' ],
+ include_directories: inc,
+ install: true)
--
2.25.0