[PATCH] drm/amdgpu: always allocate cleared VRAM for GEM allocations

[Alex Deucher]

This adds allocation latency, but aligns better with user
expectations.  The latency should improve with the drm buddy
clearing patches that Arun has been working on.

In addition this fixes the high CPU spikes seen when doing
wipe on release.

Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/3528
Reviewed-by: Michel Dänzer <mdaenzer at redhat.com>
Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
Cc: Arunpravin Paneer Selvam <Arunpravin.PaneerSelvam at amd.com>
Cc: Christian König <christian.koenig at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
index 1f149c9e2177..16af465f1c01 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
@@ -349,6 +349,10 @@ int amdgpu_gem_create_ioctl(struct drm_device *dev, void *data,
 		return -EINVAL;
 	}
 
+	/* always clear VRAM */
+	if (args->in.domains & AMDGPU_GEM_DOMAIN_VRAM)
+		flags |= AMDGPU_GEM_CREATE_VRAM_CLEARED;
+
 	/* create a gem object to contain this object in */
 	if (args->in.domains & (AMDGPU_GEM_DOMAIN_GDS |
 	    AMDGPU_GEM_DOMAIN_GWS | AMDGPU_GEM_DOMAIN_OA)) {
-- 
2.46.0