Commit 96885303 authored by Tvrtko Ursulin's avatar Tvrtko Ursulin
Browse files

drm/i915: Implement fdinfo memory stats printing 



Use the newly added drm_print_memory_stats helper to show memory
utilisation of our objects in drm/driver specific fdinfo output.

To collect the stats we walk the per memory regions object lists
and accumulate object size into the respective drm_memory_stats
categories.

v2:
 * Only account against the active region.
 * Use DMA_RESV_USAGE_BOOKKEEP when testing for active. (Tejas)

v3:
 * Update commit text. (Aravind)
 * Update to use memory regions uabi names.

Signed-off-by: default avatarTvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Aravind Iddamsetty <aravind.iddamsetty@intel.com>
Cc: Rob Clark <robdclark@gmail.com>
Cc: Andi Shyti <andi.shyti@linux.intel.com>
Cc: Tejas Upadhyay <tejas.upadhyay@intel.com>
Reviewed-by: default avatarAndi Shyti <andi.shyti@linux.intel.com>
Reviewed-by: default avatarAravind Iddamsetty <aravind.iddamsetty@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231107101806.608990-6-tvrtko.ursulin@linux.intel.com
parent 3b38d351

drivers/gpu/drm/i915/i915_drm_client.c

+64 −0
Original line number Diff line number Diff line
@@ -45,6 +45,68 @@ void __i915_drm_client_free(struct kref *kref) 
}



#ifdef CONFIG_PROC_FS

static void

obj_meminfo(struct drm_i915_gem_object *obj,

	    struct drm_memory_stats stats[INTEL_REGION_UNKNOWN])

{

	const enum intel_region_id id = obj->mm.region ?

					obj->mm.region->id : INTEL_REGION_SMEM;

	const u64 sz = obj->base.size;



	if (obj->base.handle_count > 1)

		stats[id].shared += sz;

	else

		stats[id].private += sz;



	if (i915_gem_object_has_pages(obj)) {

		stats[id].resident += sz;



		if (!dma_resv_test_signaled(obj->base.resv,

					    DMA_RESV_USAGE_BOOKKEEP))

			stats[id].active += sz;

		else if (i915_gem_object_is_shrinkable(obj) &&

			 obj->mm.madv == I915_MADV_DONTNEED)

			stats[id].purgeable += sz;

	}

}



static void show_meminfo(struct drm_printer *p, struct drm_file *file)

{

	struct drm_memory_stats stats[INTEL_REGION_UNKNOWN] = {};

	struct drm_i915_file_private *fpriv = file->driver_priv;

	struct i915_drm_client *client = fpriv->client;

	struct drm_i915_private *i915 = fpriv->i915;

	struct drm_i915_gem_object *obj;

	struct intel_memory_region *mr;

	struct list_head *pos;

	unsigned int id;



	/* Public objects. */

	spin_lock(&file->table_lock);

	idr_for_each_entry(&file->object_idr, obj, id)

		obj_meminfo(obj, stats);

	spin_unlock(&file->table_lock);



	/* Internal objects. */

	rcu_read_lock();

	list_for_each_rcu(pos, &client->objects_list) {

		obj = i915_gem_object_get_rcu(list_entry(pos, typeof(*obj),

							 client_link));

		if (!obj)

			continue;

		obj_meminfo(obj, stats);

		i915_gem_object_put(obj);

	}

	rcu_read_unlock();



	for_each_memory_region(mr, i915, id)

		drm_print_memory_stats(p,

				       &stats[id],

				       DRM_GEM_OBJECT_RESIDENT |

				       DRM_GEM_OBJECT_PURGEABLE,

				       mr->uabi_name);

}



static const char * const uabi_class_names[] = {

	[I915_ENGINE_CLASS_RENDER] = "render",

	[I915_ENGINE_CLASS_COPY] = "copy",
@@ -106,6 +168,8 @@ void i915_drm_client_fdinfo(struct drm_printer *p, struct drm_file *file) 
	 * ******************************************************************

	 */



	show_meminfo(p, file);



	if (GRAPHICS_VER(i915) < 8)

		return;