On Thu, May 4, 2017 at 9:14 AM, Christian König
<christian.koenig@xxxxxxx> wrote:
> Am 04.05.2017 um 14:52 schrieb Nikola Pajkovsky:
>>
>> else branch is pointless if it's right at the end of function and use
>> unlikely() on err path.
>>
>> Signed-off-by: Nikola Pajkovsky <npajkovsky@xxxxxxx>
>
>
> Reviewed-by: Christian König <christian.koenig@xxxxxxx>
>
Applied. thanks.
Alex
>
>> ---
>> drivers/gpu/drm/amd/amdgpu/amdgpu.h | 45
>> +++++++++++++++++++------------------
>> 1 file changed, 23 insertions(+), 22 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
>> b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
>> index c1b913541739..8ab250d4761a 100644
>> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
>> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
>> @@ -1594,30 +1594,31 @@ static inline void
>> amdgpu_ring_write_multiple(struct amdgpu_ring *ring, void *sr
>> unsigned occupied, chunk1, chunk2;
>> void *dst;
>> - if (ring->count_dw < count_dw) {
>> + if (unlikely(ring->count_dw < count_dw)) {
>> DRM_ERROR("amdgpu: writing more dwords to the ring than
>> expected!\n");
>> - } else {
>> - occupied = ring->wptr & ring->ptr_mask;
>> - dst = (void *)&ring->ring[occupied];
>> - chunk1 = ring->ptr_mask + 1 - occupied;
>> - chunk1 = (chunk1 >= count_dw) ? count_dw: chunk1;
>> - chunk2 = count_dw - chunk1;
>> - chunk1 <<= 2;
>> - chunk2 <<= 2;
>> -
>> - if (chunk1)
>> - memcpy(dst, src, chunk1);
>> -
>> - if (chunk2) {
>> - src += chunk1;
>> - dst = (void *)ring->ring;
>> - memcpy(dst, src, chunk2);
>> - }
>> -
>> - ring->wptr += count_dw;
>> - ring->wptr &= ring->ptr_mask;
>> - ring->count_dw -= count_dw;
>> + return;
>> }
>> +
>> + occupied = ring->wptr & ring->ptr_mask;
>> + dst = (void *)&ring->ring[occupied];
>> + chunk1 = ring->ptr_mask + 1 - occupied;
>> + chunk1 = (chunk1 >= count_dw) ? count_dw: chunk1;
>> + chunk2 = count_dw - chunk1;
>> + chunk1 <<= 2;
>> + chunk2 <<= 2;
>> +
>> + if (chunk1)
>> + memcpy(dst, src, chunk1);
>> +
>> + if (chunk2) {
>> + src += chunk1;
>> + dst = (void *)ring->ring;
>> + memcpy(dst, src, chunk2);
>> + }
>> +
>> + ring->wptr += count_dw;
>> + ring->wptr &= ring->ptr_mask;
>> + ring->count_dw -= count_dw;
>> }
>> static inline struct amdgpu_sdma_instance *
>
>
>
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