[RFC 4/4] drm/amdgpu: Expose special on chip memory pools in fdinfo

[Tvrtko Ursulin]

From: Tvrtko Ursulin <tvrtko.ursulin at igalia.com>

In the past these specialized on chip memory pools were reported as system
memory (aka 'cpu') which was not correct and misleading. That has since
been removed so lets make them visible as their own respective memory
regions.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin at igalia.com>
Cc: Christian König <christian.koenig at amd.com>
Cc: Yunxiang Li <Yunxiang.Li at amd.com>
Cc: Alex Deucher <alexdeucher at gmail.com>
---
It is easy to do but is it worth it I leave to AMD experts to decide.

I gave it a quick spin and have only seen all zeros when running a Steam
game.
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_fdinfo.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_fdinfo.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_fdinfo.c
index 7a9573958d87..df2cf5c33925 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_fdinfo.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_fdinfo.c
@@ -66,6 +66,10 @@ void amdgpu_show_fdinfo(struct drm_printer *p, struct drm_file *file)
 		[TTM_PL_VRAM] = "vram",
 		[TTM_PL_TT] = "gtt",
 		[TTM_PL_SYSTEM] = "cpu",
+		[AMDGPU_PL_GDS] = "gds",
+		[AMDGPU_PL_GWS] = "gws",
+		[AMDGPU_PL_OA] = "oa",
+		[AMDGPU_PL_DOORBELL] = "doorbell",
 	};
 	unsigned int hw_ip, i;
 	int ret;
@@ -87,12 +91,16 @@ void amdgpu_show_fdinfo(struct drm_printer *p, struct drm_file *file)
 
 	drm_printf(p, "pasid:\t%u\n", fpriv->vm.pasid);
 
-	for (i = 0; i < TTM_PL_PRIV; i++)
+	for (i = 0; i < ARRAY_SIZE(pl_name); i++) {
+		if (!pl_name[i])
+			continue;
+
 		drm_print_memory_stats(p,
 				       &stats[i].drm,
 				       DRM_GEM_OBJECT_RESIDENT |
 				       DRM_GEM_OBJECT_PURGEABLE,
 				       pl_name[i]);
+	}
 
 	/* Legacy amdgpu keys, alias to drm-resident-memory-: */
 	drm_printf(p, "drm-memory-vram:\t%llu KiB\n",
-- 
2.46.0