From e637d2cba8f34ef5d67a988f18a7f6560e2e51f1 Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Thu, 16 Mar 2017 13:19:57 +0000 Subject: [PATCH] drm/i915: Stop using obj->obj_exec_link outside of execbuf i915_gem_stolen_list_info() sneakily takes advantage of the obj->obj_exec_link to save itself from having to allocate. Enough of the subterfuge, just allocate an array of pointers and sort them instead of the list. Signed-off-by: Chris Wilson Reviewed-by: Mika Kuoppala Link: http://patchwork.freedesktop.org/patch/msgid/20170316132006.7976-7-chris@chris-wilson.co.uk --- drivers/gpu/drm/i915/i915_debugfs.c | 60 +++++++++++++++++------------ 1 file changed, 35 insertions(+), 25 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c index aea51fb38510..47e707d83c4d 100644 --- a/drivers/gpu/drm/i915/i915_debugfs.c +++ b/drivers/gpu/drm/i915/i915_debugfs.c @@ -27,7 +27,7 @@ */ #include -#include +#include #include "intel_drv.h" static inline struct drm_i915_private *node_to_i915(struct drm_info_node *node) @@ -204,13 +204,12 @@ describe_obj(struct seq_file *m, struct drm_i915_gem_object *obj) seq_printf(m, " (frontbuffer: 0x%03x)", frontbuffer_bits); } -static int obj_rank_by_stolen(void *priv, - struct list_head *A, struct list_head *B) +static int obj_rank_by_stolen(const void *A, const void *B) { - struct drm_i915_gem_object *a = - container_of(A, struct drm_i915_gem_object, obj_exec_link); - struct drm_i915_gem_object *b = - container_of(B, struct drm_i915_gem_object, obj_exec_link); + const struct drm_i915_gem_object *a = + *(const struct drm_i915_gem_object **)A; + const struct drm_i915_gem_object *b = + *(const struct drm_i915_gem_object **)B; if (a->stolen->start < b->stolen->start) return -1; @@ -223,49 +222,60 @@ static int i915_gem_stolen_list_info(struct seq_file *m, void *data) { struct drm_i915_private *dev_priv = node_to_i915(m->private); struct drm_device *dev = &dev_priv->drm; + struct drm_i915_gem_object **objects; struct drm_i915_gem_object *obj; u64 total_obj_size, total_gtt_size; - LIST_HEAD(stolen); - int count, ret; + unsigned long total, count, n; + int ret; + + total = READ_ONCE(dev_priv->mm.object_count); + objects = drm_malloc_ab(total, sizeof(*objects)); + if (!objects) + return -ENOMEM; ret = mutex_lock_interruptible(&dev->struct_mutex); if (ret) - return ret; + goto out; total_obj_size = total_gtt_size = count = 0; list_for_each_entry(obj, &dev_priv->mm.bound_list, global_link) { + if (count == total) + break; + if (obj->stolen == NULL) continue; - list_add(&obj->obj_exec_link, &stolen); - + objects[count++] = obj; total_obj_size += obj->base.size; total_gtt_size += i915_gem_obj_total_ggtt_size(obj); - count++; + } list_for_each_entry(obj, &dev_priv->mm.unbound_list, global_link) { + if (count == total) + break; + if (obj->stolen == NULL) continue; - list_add(&obj->obj_exec_link, &stolen); - + objects[count++] = obj; total_obj_size += obj->base.size; - count++; } - list_sort(NULL, &stolen, obj_rank_by_stolen); + + sort(objects, count, sizeof(*objects), obj_rank_by_stolen, NULL); + seq_puts(m, "Stolen:\n"); - while (!list_empty(&stolen)) { - obj = list_first_entry(&stolen, typeof(*obj), obj_exec_link); + for (n = 0; n < count; n++) { seq_puts(m, " "); - describe_obj(m, obj); + describe_obj(m, objects[n]); seq_putc(m, '\n'); - list_del_init(&obj->obj_exec_link); } - mutex_unlock(&dev->struct_mutex); - - seq_printf(m, "Total %d objects, %llu bytes, %llu GTT size\n", + seq_printf(m, "Total %lu objects, %llu bytes, %llu GTT size\n", count, total_obj_size, total_gtt_size); - return 0; + + mutex_unlock(&dev->struct_mutex); +out: + drm_free_large(objects); + return ret; } struct file_stats { -- 2.20.1