drm/i915: Show pin mapped counts and sizes in debugfs

Show a total and purgeable number of pin mapped objects
and their total and purgeable size.

Example output (new stat prefixed with a star):

  # cat i915_gem_objects
  19920 objects, 289243136 bytes
  19920 [18466] objects, 288714752 [267911168] bytes in gtt
    0 [0] active objects, 0 [0] bytes
    19917 [18466] inactive objects, 288714752 [267911168] bytes
  0 unbound objects, 0 bytes
  0 purgeable objects, 0 bytes
  1 pinned mappable objects, 3145728 bytes
  0 fault mappable objects, 0 bytes
* 19914 [0] pin mapped objects, 285560832 [0] bytes [purgeable]
  4294967296 [268435456] gtt total

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: http://patchwork.freedesktop.org/patch/msgid/1460716493-27826-1-git-send-email-tvrtko.ursulin@linux.intel.com

diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index 9302a6961d04f238b134c4b49528700bddeda8f8..58e2f48b4fd7bd1a3c9ede60927299bd6c1a5c4e 100644 (file)
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -443,6 +443,8 @@ static int i915_gem_object_info(struct seq_file *m, void* data)
        struct i915_ggtt *ggtt = &dev_priv->ggtt;
        u32 count, mappable_count, purgeable_count;
        u64 size, mappable_size, purgeable_size;
+       unsigned long pin_mapped_count = 0, pin_mapped_purgeable_count = 0;
+       u64 pin_mapped_size = 0, pin_mapped_purgeable_size = 0;
        struct drm_i915_gem_object *obj;
        struct drm_file *file;
        struct i915_vma *vma;
@@ -476,6 +478,14 @@ static int i915_gem_object_info(struct seq_file *m, void* data)
                size += obj->base.size, ++count;
                if (obj->madv == I915_MADV_DONTNEED)
                        purgeable_size += obj->base.size, ++purgeable_count;
+               if (obj->mapping) {
+                       pin_mapped_count++;
+                       pin_mapped_size += obj->base.size;
+                       if (obj->pages_pin_count == 0) {
+                               pin_mapped_purgeable_count++;
+                               pin_mapped_purgeable_size += obj->base.size;
+                       }
+               }
        }
        seq_printf(m, "%u unbound objects, %llu bytes\n", count, size);
 
@@ -493,6 +503,14 @@ static int i915_gem_object_info(struct seq_file *m, void* data)
                        purgeable_size += obj->base.size;
                        ++purgeable_count;
                }
+               if (obj->mapping) {
+                       pin_mapped_count++;
+                       pin_mapped_size += obj->base.size;
+                       if (obj->pages_pin_count == 0) {
+                               pin_mapped_purgeable_count++;
+                               pin_mapped_purgeable_size += obj->base.size;
+                       }
+               }
        }
        seq_printf(m, "%u purgeable objects, %llu bytes\n",
                   purgeable_count, purgeable_size);
@@ -500,6 +518,10 @@ static int i915_gem_object_info(struct seq_file *m, void* data)
                   mappable_count, mappable_size);
        seq_printf(m, "%u fault mappable objects, %llu bytes\n",
                   count, size);
+       seq_printf(m,
+                  "%lu [%lu] pin mapped objects, %llu [%llu] bytes [purgeable]\n",
+                  pin_mapped_count, pin_mapped_purgeable_count,
+                  pin_mapped_size, pin_mapped_purgeable_size);
 
        seq_printf(m, "%llu [%llu] gtt total\n",
                   ggtt->base.total, ggtt->mappable_end - ggtt->base.start);