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Commit 7393b7ee authored by Matthew Auld's avatar Matthew Auld Committed by Chris Wilson
Browse files

drm/i915/debugfs: include some gtt page size metrics 



Good to know, mostly for debugging purposes.

v2: some improvements from Chris

Signed-off-by: default avatarMatthew Auld <matthew.auld@intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: default avatarChris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20171006145041.21673-17-matthew.auld@intel.com


Signed-off-by: default avatarChris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20171006221833.32439-16-chris@chris-wilson.co.uk
parent d9ec12f8

drivers/gpu/drm/i915/i915_debugfs.c

+57 −4
Original line number Diff line number Diff line
@@ -119,6 +119,36 @@ 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, char *buf, size_t len)

{

	size_t x = 0;



	switch (page_sizes) {

	case 0:

		return "";

	case I915_GTT_PAGE_SIZE_4K:

		return "4K";

	case I915_GTT_PAGE_SIZE_64K:

		return "64K";

	case I915_GTT_PAGE_SIZE_2M:

		return "2M";

	default:

		if (!buf)

			return "M";



		if (page_sizes & I915_GTT_PAGE_SIZE_2M)

			x += snprintf(buf + x, len - x, "2M, ");

		if (page_sizes & I915_GTT_PAGE_SIZE_64K)

			x += snprintf(buf + x, len - x, "64K, ");

		if (page_sizes & I915_GTT_PAGE_SIZE_4K)

			x += snprintf(buf + x, len - x, "4K, ");

		buf[x-2] = '\0';



		return buf;

	}

}



static void

describe_obj(struct seq_file *m, struct drm_i915_gem_object *obj)

{
@@ -156,9 +186,10 @@ 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, NULL, 0));

		if (i915_vma_is_ggtt(vma)) {

			switch (vma->ggtt_view.type) {

			case I915_GGTT_VIEW_NORMAL:
@@ -403,10 +434,12 @@ 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;

	unsigned int page_sizes = 0;

	struct drm_file *file;

	char buf[80];

	int ret;



	ret = mutex_lock_interruptible(&dev->struct_mutex);
@@ -420,6 +453,7 @@ 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;
@@ -433,6 +467,12 @@ 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;

			page_sizes |= obj->mm.page_sizes.sg;

		}

	}

	seq_printf(m, "%u unbound objects, %llu bytes\n", count, size);
@@ -455,6 +495,12 @@ 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;

			page_sizes |= obj->mm.page_sizes.sg;

		}

	}

	seq_printf(m, "%u bound objects, %llu bytes\n",

		   count, size);
@@ -462,11 +508,18 @@ 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 (%s) %llu bytes\n",

		   huge_count,

		   stringify_page_sizes(page_sizes, buf, sizeof(buf)),

		   huge_size);

	seq_printf(m, "%u display objects (pinned), %llu bytes\n",

		   dpy_count, dpy_size);



	seq_printf(m, "%llu [%llu] gtt total\n",

		   ggtt->base.total, ggtt->mappable_end);

	seq_printf(m, "Supported page sizes: %s\n",

		   stringify_page_sizes(INTEL_INFO(dev_priv)->page_sizes,

					buf, sizeof(buf)));



	seq_putc(m, '\n');

	print_batch_pool_stats(m, dev_priv);