drm.buffer.count.stats A read-only flat-keyed file which exists on all cgroups. Each entry is keyed by the drm device's major:minor.
Total number of GEM buffer allocated.
Change-Id: Iad29bdf44390dbcee07b1e72ea0ff811aa3b9dcd Signed-off-by: Kenny Ho Kenny.Ho@amd.com --- Documentation/admin-guide/cgroup-v2.rst | 6 ++++++ include/linux/cgroup_drm.h | 3 +++ kernel/cgroup/drm.c | 22 +++++++++++++++++++--- 3 files changed, 28 insertions(+), 3 deletions(-)
diff --git a/Documentation/admin-guide/cgroup-v2.rst b/Documentation/admin-guide/cgroup-v2.rst index 75b97962b127..19fcf54ace83 100644 --- a/Documentation/admin-guide/cgroup-v2.rst +++ b/Documentation/admin-guide/cgroup-v2.rst @@ -2075,6 +2075,12 @@ DRM Interface Files
Largest (high water mark) GEM buffer allocated in bytes.
+ drm.buffer.count.stats + A read-only flat-keyed file which exists on all cgroups. Each + entry is keyed by the drm device's major:minor. + + Total number of GEM buffer allocated. + GEM Buffer Ownership ~~~~~~~~~~~~~~~~~~~~
diff --git a/include/linux/cgroup_drm.h b/include/linux/cgroup_drm.h index 593ad12602cd..51a0cd37da92 100644 --- a/include/linux/cgroup_drm.h +++ b/include/linux/cgroup_drm.h @@ -14,6 +14,7 @@ enum drmcg_res_type { DRMCG_TYPE_BO_TOTAL, DRMCG_TYPE_BO_PEAK, + DRMCG_TYPE_BO_COUNT, __DRMCG_TYPE_LAST, };
@@ -27,6 +28,8 @@ struct drmcg_device_resource { s64 bo_stats_total_allocated;
s64 bo_stats_peak_allocated; + + s64 bo_stats_count_allocated; };
/** diff --git a/kernel/cgroup/drm.c b/kernel/cgroup/drm.c index 7a0da70c5a25..bc162aa9971d 100644 --- a/kernel/cgroup/drm.c +++ b/kernel/cgroup/drm.c @@ -280,6 +280,9 @@ static void drmcg_print_stats(struct drmcg_device_resource *ddr, case DRMCG_TYPE_BO_PEAK: seq_printf(sf, "%lld\n", ddr->bo_stats_peak_allocated); break; + case DRMCG_TYPE_BO_COUNT: + seq_printf(sf, "%lld\n", ddr->bo_stats_count_allocated); + break; default: seq_puts(sf, "\n"); break; @@ -334,6 +337,12 @@ struct cftype files[] = { .private = DRMCG_CTF_PRIV(DRMCG_TYPE_BO_PEAK, DRMCG_FTYPE_STATS), }, + { + .name = "buffer.count.stats", + .seq_show = drmcg_seq_show, + .private = DRMCG_CTF_PRIV(DRMCG_TYPE_BO_COUNT, + DRMCG_FTYPE_STATS), + }, { } /* terminate */ };
@@ -385,6 +394,8 @@ void drmcg_chg_bo_alloc(struct drmcg *drmcg, struct drm_device *dev,
if (ddr->bo_stats_peak_allocated < (s64)size) ddr->bo_stats_peak_allocated = (s64)size; + + ddr->bo_stats_count_allocated++; } mutex_unlock(&dev->drmcg_mutex); } @@ -402,15 +413,20 @@ EXPORT_SYMBOL(drmcg_chg_bo_alloc); void drmcg_unchg_bo_alloc(struct drmcg *drmcg, struct drm_device *dev, size_t size) { + struct drmcg_device_resource *ddr; int devIdx = dev->primary->index;
if (drmcg == NULL) return;
mutex_lock(&dev->drmcg_mutex); - for ( ; drmcg != NULL; drmcg = drmcg_parent(drmcg)) - drmcg->dev_resources[devIdx]->bo_stats_total_allocated - -= (s64)size; + for ( ; drmcg != NULL; drmcg = drmcg_parent(drmcg)) { + ddr = drmcg->dev_resources[devIdx]; + + ddr->bo_stats_total_allocated -= (s64)size; + + ddr->bo_stats_count_allocated--; + } mutex_unlock(&dev->drmcg_mutex); } EXPORT_SYMBOL(drmcg_unchg_bo_alloc);