Commit e7c47231 authored by Alex Deucher's avatar Alex Deucher
Browse files

drm/amdgpu: expose benchmarks via debugfs 



They provide a nice smoke test of transfer performance
using SDMA.  Allow the user to run these at runtime
rather than only at init time.

v2: fix permissions (Alex)

Reviewed-by: default avatarChristian König <christian.koenig@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent a0c5fd46

drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c

+23 −0
Original line number Diff line number Diff line
@@ -1362,6 +1362,25 @@ static int amdgpu_debugfs_evict_gtt(void *data, u64 *val) 
	return 0;

}



static int amdgpu_debugfs_benchmark(void *data, u64 val)

{

	struct amdgpu_device *adev = (struct amdgpu_device *)data;

	struct drm_device *dev = adev_to_drm(adev);

	int r;



	r = pm_runtime_get_sync(dev->dev);

	if (r < 0) {

		pm_runtime_put_autosuspend(dev->dev);

		return r;

	}



	r = amdgpu_benchmark(adev, val);



	pm_runtime_mark_last_busy(dev->dev);

	pm_runtime_put_autosuspend(dev->dev);



	return r;

}



static int amdgpu_debugfs_vm_info_show(struct seq_file *m, void *unused)

{
@@ -1398,6 +1417,8 @@ DEFINE_DEBUGFS_ATTRIBUTE(amdgpu_evict_vram_fops, amdgpu_debugfs_evict_vram, 
			 NULL, "%lld\n");

DEFINE_DEBUGFS_ATTRIBUTE(amdgpu_evict_gtt_fops, amdgpu_debugfs_evict_gtt,

			 NULL, "%lld\n");

DEFINE_DEBUGFS_ATTRIBUTE(amdgpu_benchmark_fops, NULL, amdgpu_debugfs_benchmark,

			 "%lld\n");



static void amdgpu_ib_preempt_fences_swap(struct amdgpu_ring *ring,

					  struct dma_fence **fences)
@@ -1683,6 +1704,8 @@ int amdgpu_debugfs_init(struct amdgpu_device *adev) 
			    &amdgpu_debugfs_test_ib_fops);

	debugfs_create_file("amdgpu_vm_info", 0444, root, adev,

			    &amdgpu_debugfs_vm_info_fops);

	debugfs_create_file("amdgpu_benchmark", 0200, root, adev,

			    &amdgpu_benchmark_fops);



	adev->debugfs_vbios_blob.data = adev->bios;

	adev->debugfs_vbios_blob.size = adev->bios_size;