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| author | Felix Kuehling <Felix.Kuehling@amd.com> | 2017-08-26 09:40:45 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2017-09-26 20:07:04 +0300 |
| commit | 00ecd8a27c03b6dd463ab8755dd6d58751d76297 (patch) | |
| tree | a6f5728fd232ff6b31c967206a8e8e3f26d0bcad /drivers/gpu/drm/amd/amdgpu/amdgpu_ih.c | |
| parent | d2791c45636927986f732482cbba4ed7c758a115 (diff) | |
| download | linux-00ecd8a27c03b6dd463ab8755dd6d58751d76297.tar.xz | |
drm/amdgpu: Add prescreening stage in IH processing (v2)
To filter out high-frequency interrupts that can be safely ignored.
v2: squash in trivial typo fix for si (Alex)
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_ih.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_ih.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ih.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ih.c index 3ab4c65ecc8b..c834a40cfad6 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ih.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ih.c @@ -169,6 +169,12 @@ restart_ih: while (adev->irq.ih.rptr != wptr) { u32 ring_index = adev->irq.ih.rptr >> 2; + /* Prescreening of high-frequency interrupts */ + if (!amdgpu_ih_prescreen_iv(adev)) { + adev->irq.ih.rptr &= adev->irq.ih.ptr_mask; + continue; + } + /* Before dispatching irq to IP blocks, send it to amdkfd */ amdgpu_amdkfd_interrupt(adev, (const void *) &adev->irq.ih.ring[ring_index]); |