From 7484667c6a8a9122d139a287454bc9c8799c3def Mon Sep 17 00:00:00 2001 From: Chunming Zhou Date: Tue, 4 Aug 2015 11:30:09 +0800 Subject: [PATCH] drm/amdgpu: move sched job process from isr to fence callback This way can avoid interrupt lost, and can process sched job exactly. Signed-off-by: Chunming Zhou Reviewed-by: Jammy Zhou --- drivers/gpu/drm/amd/amdgpu/amdgpu.h | 2 +- drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c | 19 +------------------ drivers/gpu/drm/amd/amdgpu/amdgpu_sched.c | 13 +++++++++++++ 3 files changed, 15 insertions(+), 19 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h index e1f093c1f011..4d6a3e825096 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h @@ -404,7 +404,7 @@ struct amdgpu_fence_driver { struct amdgpu_fence { struct fence base; - + struct fence_cb cb; /* RB, DMA, etc. */ struct amdgpu_ring *ring; uint64_t seq; diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c index 60e6d668f6b4..eb419791d1b2 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c @@ -350,25 +350,8 @@ void amdgpu_fence_process(struct amdgpu_ring *ring) } } while (atomic64_xchg(&ring->fence_drv.last_seq, seq) > seq); - if (wake) { - if (amdgpu_enable_scheduler) { - uint64_t handled_seq = - amd_sched_get_handled_seq(ring->scheduler); - uint64_t latest_seq = - atomic64_read(&ring->fence_drv.last_seq); - if (handled_seq == latest_seq) { - DRM_ERROR("ring %d, EOP without seq update (lastest_seq=%llu)\n", - ring->idx, latest_seq); - goto exit; - } - do { - amd_sched_isr(ring->scheduler); - } while (amd_sched_get_handled_seq(ring->scheduler) < latest_seq); - } - + if (wake) wake_up_all(&ring->fence_drv.fence_queue); - } -exit: spin_unlock_irqrestore(&ring->fence_lock, irqflags); } diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_sched.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_sched.c index 83138a6c54b5..9f2f19cc4625 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_sched.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_sched.c @@ -43,12 +43,20 @@ static int amdgpu_sched_prepare_job(struct amd_gpu_scheduler *sched, return r; } +static void amdgpu_fence_sched_cb(struct fence *f, struct fence_cb *cb) +{ + struct amdgpu_fence *fence = + container_of(cb, struct amdgpu_fence, cb); + amd_sched_isr(fence->ring->scheduler); +} + static void amdgpu_sched_run_job(struct amd_gpu_scheduler *sched, struct amd_context_entity *c_entity, void *job) { int r = 0; struct amdgpu_cs_parser *sched_job = (struct amdgpu_cs_parser *)job; + struct amdgpu_fence *fence; mutex_lock(&sched_job->job_lock); r = amdgpu_ib_schedule(sched_job->adev, @@ -57,6 +65,11 @@ static void amdgpu_sched_run_job(struct amd_gpu_scheduler *sched, sched_job->filp); if (r) goto err; + fence = sched_job->ibs[sched_job->num_ibs - 1].fence; + if (fence_add_callback(&fence->base, + &fence->cb, amdgpu_fence_sched_cb)) + goto err; + if (sched_job->run_job) { r = sched_job->run_job(sched_job); if (r) -- 2.20.1