drm/amdgpu: Allocate coredump memory in a nonblocking way

andrealmeid · alexdeucher · commit 6d1b3455481a · 2023-08-31T18:10:11.000-04:00
During a GPU reset, a normal memory reclaim could block to reclaim
memory. Giving that coredump is a best effort mechanism, it shouldn't
disturb the reset path. Change its memory allocation flag to a
nonblocking one.

Signed-off-by: André Almeida &lt;andrealmeid@igalia.com&gt;
Reviewed-by: Christian König &lt;christian.koenig@amd.com&gt;
Signed-off-by: Alex Deucher &lt;alexander.deucher@amd.com&gt;
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -4869,7 +4869,7 @@ static void amdgpu_reset_capture_coredumpm(struct amdgpu_device *adev)
 	struct drm_device *dev = adev_to_drm(adev);
 
 	ktime_get_ts64(&adev->reset_time);
-	dev_coredumpm(dev->dev, THIS_MODULE, adev, 0, GFP_KERNEL,
+	dev_coredumpm(dev->dev, THIS_MODULE, adev, 0, GFP_NOWAIT,
 		      amdgpu_devcoredump_read, amdgpu_devcoredump_free);
 }
 #endif

Original file line number	Diff line number	Diff line change
`@@ -4869,7 +4869,7 @@ static void amdgpu_reset_capture_coredumpm(struct amdgpu_device *adev)`
`4869`	`4869`	`struct drm_device *dev = adev_to_drm(adev);`
`4870`	`4870`
`4871`	`4871`	`ktime_get_ts64(&adev->reset_time);`
`4872`		`- dev_coredumpm(dev->dev, THIS_MODULE, adev, 0, GFP_KERNEL,`
	`4872`	`+ dev_coredumpm(dev->dev, THIS_MODULE, adev, 0, GFP_NOWAIT,`
`4873`	`4873`	`amdgpu_devcoredump_read, amdgpu_devcoredump_free);`
`4874`	`4874`	`}`
`4875`	`4875`	`#endif`