From: Lukasz Fiedorowicz <lukasz.fiedorowicz@xxxxxxxxx>
Debugfs i915_gem_object is extended to enable the IGTs to
detect the LMEM's availability and the total size of LMEM.
v2: READ_ONCE is used [Chris]
v3: %pa is used for printing the resource [Chris]
Signed-off-by: Lukasz Fiedorowicz <lukasz.fiedorowicz@xxxxxxxxx>
Signed-off-by: Matthew Auld <matthew.auld@xxxxxxxxx>
Signed-off-by: Stuart Summers <stuart.summers@xxxxxxxxx>
Signed-off-by: Ramalingam C <ramalingam.c@xxxxxxxxx>
Cc: Joonas Lahtinen <joonas.lahtinen@xxxxxxxxxxxxxxx>
Reviewed-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/i915_debugfs.c | 6 +++++-
drivers/gpu/drm/i915/intel_memory_region.c | 5 ++++-
drivers/gpu/drm/i915/intel_memory_region.h | 2 ++
3 files changed, 11 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index d28468eaed57..af11023b4c8d 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -373,7 +373,11 @@ static int i915_gem_object_info(struct seq_file *m, void *data)
atomic_read(&i915->mm.free_count),
i915->mm.shrink_memory);
- seq_putc(m, '\n');
+ if (HAS_LMEM(i915)) {
+ seq_printf(m, "LMEM total: %pa bytes, available %pa bytes\n",
+ &i915->mm.regions[INTEL_REGION_LMEM]->total,
+ &i915->mm.regions[INTEL_REGION_LMEM]->avail);
+ }
print_context_stats(m, i915);
diff --git a/drivers/gpu/drm/i915/intel_memory_region.c b/drivers/gpu/drm/i915/intel_memory_region.c
index e24c280e5930..15e539de0a82 100644
--- a/drivers/gpu/drm/i915/intel_memory_region.c
+++ b/drivers/gpu/drm/i915/intel_memory_region.c
@@ -37,7 +37,7 @@ __intel_memory_region_put_pages_buddy(struct intel_memory_region *mem,
struct list_head *blocks)
{
mutex_lock(&mem->mm_lock);
- intel_memory_region_free_pages(mem, blocks);
+ mem->avail += intel_memory_region_free_pages(mem, blocks);
mutex_unlock(&mem->mm_lock);
}
@@ -106,6 +106,7 @@ __intel_memory_region_get_pages_buddy(struct intel_memory_region *mem,
break;
} while (1);
+ mem->avail -= size;
mutex_unlock(&mem->mm_lock);
return 0;
@@ -164,6 +165,8 @@ intel_memory_region_create(struct drm_i915_private *i915,
mem->io_start = io_start;
mem->min_page_size = min_page_size;
mem->ops = ops;
+ mem->total = size;
+ mem->avail = mem->total;
mutex_init(&mem->objects.lock);
INIT_LIST_HEAD(&mem->objects.list);
diff --git a/drivers/gpu/drm/i915/intel_memory_region.h b/drivers/gpu/drm/i915/intel_memory_region.h
index 238722009677..644ca73d7905 100644
--- a/drivers/gpu/drm/i915/intel_memory_region.h
+++ b/drivers/gpu/drm/i915/intel_memory_region.h
@@ -82,6 +82,8 @@ struct intel_memory_region {
resource_size_t io_start;
resource_size_t min_page_size;
+ resource_size_t total;
+ resource_size_t avail;
unsigned int type;
unsigned int instance;
--
2.20.1
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