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

1 files changed, 22 insertions, 0 deletions

diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index 9302a6961d04..58e2f48b4fd7 100644
--- 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);