From e058320957ab91b7f4fcf566951abad3aa549ee9 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Christian=20K=C3=B6nig?= Date: Mon, 16 Jul 2018 13:47:34 +0200 Subject: [PATCH 4969/5725] drm/amdgpu: allow for more flexible priority handling MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Allow to call amdgpu_ring_priority_get() after pushing the ring to the scheduler. Signed-off-by: Christian König Reviewed-by: Chunming Zhou Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c index 19e45a3..93794a8 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c @@ -211,7 +211,8 @@ void amdgpu_ring_priority_get(struct amdgpu_ring *ring, if (!ring->funcs->set_priority) return; - atomic_inc(&ring->num_jobs[priority]); + if (atomic_inc_return(&ring->num_jobs[priority]) <= 0) + return; mutex_lock(&ring->priority_mutex); if (priority <= ring->priority) -- 2.7.4