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Commit 6d2b8885 authored by Chris Wilson's avatar Chris Wilson Committed by Daniel Vetter
Browse files

drm/i915: List objects allocated from stolen memory in debugfs 



I was curious as to what objects were currently allocated from stolen
memory, and so exported it from debugfs.

Signed-off-by: default avatarChris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
parent a95fd8ca

drivers/gpu/drm/i915/i915_debugfs.c

+63 −0
Original line number Diff line number Diff line
@@ -30,6 +30,7 @@ 
#include <linux/debugfs.h>

#include <linux/slab.h>

#include <linux/export.h>

#include <linux/list_sort.h>

#include <drm/drmP.h>

#include "intel_drv.h"

#include "intel_ringbuffer.h"
@@ -188,6 +189,67 @@ static int i915_gem_object_list_info(struct seq_file *m, void *data) 
	return 0;

}



static int obj_rank_by_stolen(void *priv,

			      struct list_head *A, struct list_head *B)

{

	struct drm_i915_gem_object *a =

		container_of(A, struct drm_i915_gem_object, exec_list);

	struct drm_i915_gem_object *b =

		container_of(B, struct drm_i915_gem_object, exec_list);



	return a->stolen->start - b->stolen->start;

}



static int i915_gem_stolen_list_info(struct seq_file *m, void *data)

{

	struct drm_info_node *node = (struct drm_info_node *) m->private;

	struct drm_device *dev = node->minor->dev;

	struct drm_i915_private *dev_priv = dev->dev_private;

	struct drm_i915_gem_object *obj;

	size_t total_obj_size, total_gtt_size;

	LIST_HEAD(stolen);

	int count, ret;



	ret = mutex_lock_interruptible(&dev->struct_mutex);

	if (ret)

		return ret;



	total_obj_size = total_gtt_size = count = 0;

	list_for_each_entry(obj, &dev_priv->mm.bound_list, global_list) {

		if (obj->stolen == NULL)

			continue;



		list_add(&obj->exec_list, &stolen);



		total_obj_size += obj->base.size;

		total_gtt_size += i915_gem_obj_ggtt_size(obj);

		count++;

	}

	list_for_each_entry(obj, &dev_priv->mm.unbound_list, global_list) {

		if (obj->stolen == NULL)

			continue;



		list_add(&obj->exec_list, &stolen);



		total_obj_size += obj->base.size;

		count++;

	}

	list_sort(NULL, &stolen, obj_rank_by_stolen);

	seq_puts(m, "Stolen:\n");

	while (!list_empty(&stolen)) {

		obj = list_first_entry(&stolen, typeof(*obj), exec_list);

		seq_puts(m, "   ");

		describe_obj(m, obj);

		seq_putc(m, '\n');

		list_del_init(&obj->exec_list);

	}

	mutex_unlock(&dev->struct_mutex);



	seq_printf(m, "Total %d objects, %zu bytes, %zu GTT size\n",

		   count, total_obj_size, total_gtt_size);

	return 0;

}



#define count_objects(list, member) do { \

	list_for_each_entry(obj, list, member) { \

		size += i915_gem_obj_ggtt_size(obj); \
@@ -2114,6 +2176,7 @@ static struct drm_info_list i915_debugfs_list[] = { 
	{"i915_gem_pinned", i915_gem_gtt_info, 0, (void *) PINNED_LIST},

	{"i915_gem_active", i915_gem_object_list_info, 0, (void *) ACTIVE_LIST},

	{"i915_gem_inactive", i915_gem_object_list_info, 0, (void *) INACTIVE_LIST},

	{"i915_gem_stolen", i915_gem_stolen_list_info },

	{"i915_gem_pageflip", i915_gem_pageflip_info, 0},

	{"i915_gem_request", i915_gem_request_info, 0},

	{"i915_gem_seqno", i915_gem_seqno_info, 0},