[PATCH 16/22] drm/i915/debugfs: include some gtt page size metrics

Matthew Auld
2017-08-15T18:17:07Z

Good to know, mostly for debugging purposes.

Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
---
drivers/gpu/drm/i915/i915_debugfs.c | 42 +++++++++++++++++++++++++++++++++----
1 file changed, 38 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index 329fb3649dc3..a0cb282d3b9a 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -117,6 +117,26 @@ static u64 i915_gem_obj_total_ggtt_size(struct drm_i915_gem_object *obj)
return size;
}

+static const char *stringify_page_sizes(unsigned int page_sizes)
+{
+ switch (page_sizes) {
+ case I915_GTT_PAGE_SIZE_4K:
+ return "4K";
+ case I915_GTT_PAGE_SIZE_64K:
+ return "64K";
+ case I915_GTT_PAGE_SIZE_2M:
+ return "2M";
+ case I915_GTT_PAGE_SIZE_1G:
+ return "1G";
+ default:
+ /* mixed-mode? */
+ if (page_sizes)
+ return "M";
+
+ return "";
+ }
+}
+
static void
describe_obj(struct seq_file *m, struct drm_i915_gem_object *obj)
{
@@ -154,9 +174,10 @@ describe_obj(struct seq_file *m, struct drm_i915_gem_object *obj)
if (!drm_mm_node_allocated(&vma->node))
continue;

- seq_printf(m, " (%sgtt offset: %08llx, size: %08llx",
+ seq_printf(m, " (%sgtt offset: %08llx, size: %08llx, pages: %s",
i915_vma_is_ggtt(vma) ? "g" : "pp",
- vma->node.start, vma->node.size);
+ vma->node.start, vma->node.size,
+ stringify_page_sizes(vma->page_sizes.gtt));
if (i915_vma_is_ggtt(vma)) {
switch (vma->ggtt_view.type) {
case I915_GGTT_VIEW_NORMAL:
@@ -401,8 +422,8 @@ static int i915_gem_object_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 i915_ggtt *ggtt = &dev_priv->ggtt;
- u32 count, mapped_count, purgeable_count, dpy_count;
- u64 size, mapped_size, purgeable_size, dpy_size;
+ u32 count, mapped_count, purgeable_count, dpy_count, huge_count;
+ u64 size, mapped_size, purgeable_size, dpy_size, huge_size;
struct drm_i915_gem_object *obj;
struct drm_file *file;
int ret;
@@ -418,6 +439,7 @@ static int i915_gem_object_info(struct seq_file *m, void *data)
size = count = 0;
mapped_size = mapped_count = 0;
purgeable_size = purgeable_count = 0;
+ huge_size = huge_count = 0;
list_for_each_entry(obj, &dev_priv->mm.unbound_list, global_link) {
size += obj->base.size;
++count;
@@ -431,6 +453,11 @@ static int i915_gem_object_info(struct seq_file *m, void *data)
mapped_count++;
mapped_size += obj->base.size;
}
+
+ if (obj->mm.page_sizes.sg > I915_GTT_PAGE_SIZE) {
+ huge_count++;
+ huge_size += obj->base.size;
+ }
}
seq_printf(m, "%u unbound objects, %llu bytes\n", count, size);

@@ -453,6 +480,11 @@ static int i915_gem_object_info(struct seq_file *m, void *data)
mapped_count++;
mapped_size += obj->base.size;
}
+
+ if (obj->mm.page_sizes.sg > I915_GTT_PAGE_SIZE) {
+ huge_count++;
+ huge_size += obj->base.size;
+ }
}
seq_printf(m, "%u bound objects, %llu bytes\n",
count, size);
@@ -460,6 +492,8 @@ static int i915_gem_object_info(struct seq_file *m, void *data)
purgeable_count, purgeable_size);
seq_printf(m, "%u mapped objects, %llu bytes\n",
mapped_count, mapped_size);
+ seq_printf(m, "%u huge-paged objects, %llu bytes\n",
+ huge_count, huge_size);
seq_printf(m, "%u display objects (pinned), %llu bytes\n",
dpy_count, dpy_size);