[igt-dev] [Intel-gfx] [PATCH i-g-t 1/3] lib/igt_drm_fdinfo: Parse memory usage
Kamil Konieczny
kamil.konieczny at linux.intel.com
Wed Jul 26 17:28:16 UTC 2023
Hi Tvrtko,
please check your patches with Linux kernel script checkpatch.pl
Some of it's warnings seems strange, like:
WARNING: Co-developed-by and Signed-off-by: name/email do not match
#12:
Co-developed-by: Rob Clark <robdclark at chromium.org>
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
On 2023-07-05 at 17:31:03 +0100, Tvrtko Ursulin wrote:
> 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));
---------------------------------- ^
According to checkpatch:
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")) {
------- ^^^^^^
No need for separate 'else':
if (!strcmp(unit, "MiB")) {
> + *val *= 1024 * 1024;
> + } else if (!strcmp(unit, "GiB")) {
------- ^^^^^^
Same here.
Regards,
Kamil
> + *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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