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drm/amdgpu: expose benchmarks via debugfs

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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: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher 2022-02-18 16:41:27 -05:00
parent a0c5fd46b2
commit e7c4723103
1 changed files with 23 additions and 0 deletions
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23
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
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@ -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;