[igt-dev] [PATCH i-g-t 1/3] lib/igt_drm_fdinfo: Parse memory usage
Tvrtko Ursulin
tvrtko.ursulin at linux.intel.com
Wed Jul 5 16:31:03 UTC 2023
From: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
Add parsing and memory storage for the memory usage related fdinfo stats.
Uses the same approach as the engine utilization code by either auto-
discovering different memory regions, or allowing for the caller to pass
in a map with predefined index to name relationship.
Co-developed-by: Rob Clark <robdclark at chromium.org>
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
---
lib/igt_drm_clients.c | 3 +-
lib/igt_drm_fdinfo.c | 142 ++++++++++++++++++++++++++++++++++++++--
lib/igt_drm_fdinfo.h | 24 ++++++-
tests/i915/drm_fdinfo.c | 8 +--
tools/intel_gpu_top.c | 2 +-
5 files changed, 165 insertions(+), 14 deletions(-)
diff --git a/lib/igt_drm_clients.c b/lib/igt_drm_clients.c
index f0294ba81c42..fdea42752a81 100644
--- a/lib/igt_drm_clients.c
+++ b/lib/igt_drm_clients.c
@@ -491,7 +491,8 @@ igt_drm_clients_scan(struct igt_drm_clients *clients,
if (!__igt_parse_drm_fdinfo(dirfd(fdinfo_dir),
fdinfo_dent->d_name, &info,
- name_map, map_entries))
+ name_map, map_entries,
+ NULL, 0))
continue;
if (filter_client && !filter_client(clients, &info))
diff --git a/lib/igt_drm_fdinfo.c b/lib/igt_drm_fdinfo.c
index b5f8a8679a71..d08632dfb690 100644
--- a/lib/igt_drm_fdinfo.c
+++ b/lib/igt_drm_fdinfo.c
@@ -124,13 +124,81 @@ static const char *find_kv(const char *buf, const char *key, size_t keylen)
return *p ? p : NULL;
}
+static int parse_region(char *line, struct drm_client_fdinfo *info,
+ size_t prefix_len,
+ const char **region_map, unsigned int region_entries,
+ uint64_t *val)
+{
+ char *name, *p, *unit = NULL;
+ ssize_t name_len;
+ int found = -1;
+ unsigned int i;
+
+ p = index(line, ':');
+ if (!p || p == line)
+ return -1;
+
+ name_len = p - line - prefix_len;
+ if (name_len < 1)
+ return -1;
+
+ name = line + prefix_len;
+
+ if (region_map) {
+ for (i = 0; i < region_entries; i++) {
+ if (!strncmp(name, region_map[i], name_len)) {
+ found = i;
+ break;
+ }
+ }
+ } else {
+ for (i = 0; i < info->num_regions; i++) {
+ if (!strncmp(name, info->region_names[i], name_len)) {
+ found = i;
+ break;
+ }
+ }
+
+ if (found < 0) {
+ assert((info->num_regions + 1) < ARRAY_SIZE(info->region_names));
+ assert((strlen(name) + 1) < sizeof(info->region_names[0]));
+ strncpy(info->region_names[info->num_regions], name, name_len);
+ found = info->num_regions;
+ }
+ }
+
+ if (found < 0)
+ goto out;
+
+ while (*++p && isspace(*p));
+ *val = strtoull(p, NULL, 10);
+
+ p = index(p, ' ');
+ if (!p)
+ goto out;
+
+ unit = ++p;
+ if (!strcmp(unit, "KiB")) {
+ *val *= 1024;
+ } else if (!strcmp(unit, "MiB")) {
+ *val *= 1024 * 1024;
+ } else if (!strcmp(unit, "GiB")) {
+ *val *= 1024 * 1024 * 1024;
+ }
+
+out:
+ return found;
+}
+
unsigned int
__igt_parse_drm_fdinfo(int dir, const char *fd, struct drm_client_fdinfo *info,
- const char **name_map, unsigned int map_entries)
+ const char **name_map, unsigned int map_entries,
+ const char **region_map, unsigned int region_entries)
{
+ bool regions_found[DRM_CLIENT_FDINFO_MAX_REGIONS] = { };
+ unsigned int good = 0, num_capacity = 0;
char buf[4096], *_buf = buf;
char *l, *ctx = NULL;
- unsigned int good = 0, num_capacity = 0;
size_t count;
count = read_fdinfo(buf, sizeof(buf), dir, fd);
@@ -173,18 +241,79 @@ __igt_parse_drm_fdinfo(int dir, const char *fd, struct drm_client_fdinfo *info,
info->capacity[idx] = val;
num_capacity++;
}
+ } else if (!strncmp(l, "drm-total-", 10)) {
+ idx = parse_region(l, info, strlen("drm-total-"),
+ region_map, region_entries, &val);
+ if (idx >= 0) {
+ info->region_mem[idx].total = val;
+ if (!regions_found[idx]) {
+ info->num_regions++;
+ regions_found[idx] = true;
+ if (idx > info->last_region_index)
+ info->last_region_index = idx;
+ }
+ }
+ } else if (!strncmp(l, "drm-shared-", 11)) {
+ idx = parse_region(l, info, strlen("drm-shared-"),
+ region_map, region_entries, &val);
+ if (idx >= 0) {
+ info->region_mem[idx].shared = val;
+ if (!regions_found[idx]) {
+ info->num_regions++;
+ regions_found[idx] = true;
+ if (idx > info->last_region_index)
+ info->last_region_index = idx;
+ }
+ }
+ } else if (!strncmp(l, "drm-resident-", 13)) {
+ idx = parse_region(l, info, strlen("drm-resident-"),
+ region_map, region_entries, &val);
+ if (idx >= 0) {
+ info->region_mem[idx].resident = val;
+ if (!regions_found[idx]) {
+ info->num_regions++;
+ regions_found[idx] = true;
+ if (idx > info->last_region_index)
+ info->last_region_index = idx;
+ }
+ }
+ } else if (!strncmp(l, "drm-purgeable-", 14)) {
+ idx = parse_region(l, info, strlen("drm-purgeable-"),
+ region_map, region_entries, &val);
+ if (idx >= 0) {
+ info->region_mem[idx].purgeable = val;
+ if (!regions_found[idx]) {
+ info->num_regions++;
+ regions_found[idx] = true;
+ if (idx > info->last_region_index)
+ info->last_region_index = idx;
+ }
+ }
+ } else if (!strncmp(l, "drm-active-", 11)) {
+ idx = parse_region(l, info, strlen("drm-active-"),
+ region_map, region_entries, &val);
+ if (idx >= 0) {
+ info->region_mem[idx].active = val;
+ if (!regions_found[idx]) {
+ info->num_regions++;
+ regions_found[idx] = true;
+ if (idx > info->last_region_index)
+ info->last_region_index = idx;
+ }
+ }
}
}
- if (good < 2 || !info->num_engines)
+ if (good < 2 || (!info->num_engines && !info->num_regions))
return 0; /* fdinfo format not as expected */
- return good + info->num_engines + num_capacity;
+ return good + info->num_engines + num_capacity + info->num_regions;
}
unsigned int
igt_parse_drm_fdinfo(int drm_fd, struct drm_client_fdinfo *info,
- const char **name_map, unsigned int map_entries)
+ const char **name_map, unsigned int map_entries,
+ const char **region_map, unsigned int region_entries)
{
unsigned int res;
char fd[64];
@@ -198,7 +327,8 @@ igt_parse_drm_fdinfo(int drm_fd, struct drm_client_fdinfo *info,
if (dir < 0)
return false;
- res = __igt_parse_drm_fdinfo(dir, fd, info, name_map, map_entries);
+ res = __igt_parse_drm_fdinfo(dir, fd, info, name_map, map_entries,
+ region_map, region_entries);
close(dir);
diff --git a/lib/igt_drm_fdinfo.h b/lib/igt_drm_fdinfo.h
index 6284e05e868a..1999c4f2b857 100644
--- a/lib/igt_drm_fdinfo.h
+++ b/lib/igt_drm_fdinfo.h
@@ -30,8 +30,17 @@
#include <stdint.h>
#include <stdbool.h>
+#define DRM_CLIENT_FDINFO_MAX_REGIONS 16
#define DRM_CLIENT_FDINFO_MAX_ENGINES 16
+struct drm_client_meminfo {
+ uint64_t total;
+ uint64_t shared;
+ uint64_t resident;
+ uint64_t purgeable;
+ uint64_t active;
+};
+
struct drm_client_fdinfo {
char driver[128];
char pdev[128];
@@ -42,6 +51,11 @@ struct drm_client_fdinfo {
unsigned int capacity[DRM_CLIENT_FDINFO_MAX_ENGINES];
char names[DRM_CLIENT_FDINFO_MAX_ENGINES][256];
uint64_t busy[DRM_CLIENT_FDINFO_MAX_ENGINES];
+
+ unsigned int num_regions;
+ unsigned int last_region_index;
+ char region_names[DRM_CLIENT_FDINFO_MAX_REGIONS][256];
+ struct drm_client_meminfo region_mem[DRM_CLIENT_FDINFO_MAX_REGIONS];
};
/**
@@ -51,13 +65,16 @@ struct drm_client_fdinfo {
* @info: Structure to populate with read data. Must be zeroed.
* @name_map: Optional array of strings representing engine names
* @map_entries: Number of strings in the names array
+ * @region_map: Optional array of strings representing memory regions
+ * @region_entries: Number of strings in the region map
*
* Returns the number of valid drm fdinfo keys found or zero if not all
* mandatory keys were present or no engines found.
*/
unsigned int
igt_parse_drm_fdinfo(int drm_fd, struct drm_client_fdinfo *info,
- const char **name_map, unsigned int map_entries);
+ const char **name_map, unsigned int map_entries,
+ const char **region_map, unsigned int region_entries);
/**
* __igt_parse_drm_fdinfo: Parses the drm fdinfo file
@@ -67,6 +84,8 @@ igt_parse_drm_fdinfo(int drm_fd, struct drm_client_fdinfo *info,
* @info: Structure to populate with read data. Must be zeroed.
* @name_map: Optional array of strings representing engine names
* @map_entries: Number of strings in the names array
+ * @region_map: Optional array of strings representing memory regions
+ * @region_entries: Number of strings in the region map
*
* Returns the number of valid drm fdinfo keys found or zero if not all
* mandatory keys were present or no engines found.
@@ -74,6 +93,7 @@ igt_parse_drm_fdinfo(int drm_fd, struct drm_client_fdinfo *info,
unsigned int
__igt_parse_drm_fdinfo(int dir, const char *fd,
struct drm_client_fdinfo *info,
- const char **name_map, unsigned int map_entries);
+ const char **name_map, unsigned int map_entries,
+ const char **region_map, unsigned int region_entries);
#endif /* IGT_DRM_FDINFO_H */
diff --git a/tests/i915/drm_fdinfo.c b/tests/i915/drm_fdinfo.c
index c0e0ba1905f1..01526c0e19de 100644
--- a/tests/i915/drm_fdinfo.c
+++ b/tests/i915/drm_fdinfo.c
@@ -104,7 +104,7 @@ static void basics(int i915, unsigned int num_classes)
unsigned int ret;
ret = igt_parse_drm_fdinfo(i915, &info, engine_map,
- ARRAY_SIZE(engine_map));
+ ARRAY_SIZE(engine_map), NULL, 0);
igt_assert(ret);
igt_assert(!strcmp(info.driver, "i915"));
@@ -236,7 +236,7 @@ static uint64_t read_busy(int i915, unsigned int class)
struct drm_client_fdinfo info = { };
igt_assert(igt_parse_drm_fdinfo(i915, &info, engine_map,
- ARRAY_SIZE(engine_map)));
+ ARRAY_SIZE(engine_map), NULL, 0));
return info.busy[class];
}
@@ -326,7 +326,7 @@ static void read_busy_all(int i915, uint64_t *val)
struct drm_client_fdinfo info = { };
igt_assert(igt_parse_drm_fdinfo(i915, &info, engine_map,
- ARRAY_SIZE(engine_map)));
+ ARRAY_SIZE(engine_map), NULL, 0));
memcpy(val, info.busy, sizeof(info.busy));
}
@@ -797,7 +797,7 @@ igt_main
i915 = __drm_open_driver(DRIVER_INTEL);
igt_require_gem(i915);
- igt_require(igt_parse_drm_fdinfo(i915, &info, NULL, 0));
+ igt_require(igt_parse_drm_fdinfo(i915, &info, NULL, 0, NULL, 0));
ctx = intel_ctx_create_all_physical(i915);
diff --git a/tools/intel_gpu_top.c b/tools/intel_gpu_top.c
index cef1d3c7fa9f..87e9681e53b4 100644
--- a/tools/intel_gpu_top.c
+++ b/tools/intel_gpu_top.c
@@ -2307,7 +2307,7 @@ static bool has_drm_fdinfo(const struct igt_device_card *card)
if (fd < 0)
return false;
- cnt = igt_parse_drm_fdinfo(fd, &info, NULL, 0);
+ cnt = igt_parse_drm_fdinfo(fd, &info, NULL, 0, NULL, 0);
close(fd);
--
2.39.2
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