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drm/amdgpu:don't change ctx->reset_couner upon query 

reset_counter marks the reset counter number once the context
is created, shouldn't be changed due to query.

To keep U/K interface on the ctx_query and keep ctx's reset_counter
logic compatible with GPU RESET feature, now use another var named
"reset_counter_query" to replace the original checked & updated in
amdgpu_ctx_query.

Signed-off-by: Monk Liu <Monk.Liu@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Monk Liu 2017-10-17 14:39:23 +08:00 committed by Alex Deucher
parent a4176cb484
commit 668ca1b44d
2 changed files with 4 additions and 2 deletions
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1
drivers/gpu/drm/amd/amdgpu/amdgpu.h
View File

@ -735,6 +735,7 @@ struct amdgpu_ctx {
struct amdgpu_device *adev;
struct amdgpu_queue_mgr queue_mgr;
unsigned reset_counter;
unsigned reset_counter_query;
uint32_t vram_lost_counter;
spinlock_t ring_lock;
struct dma_fence **fences;

5
drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c
View File

@ -75,6 +75,7 @@ static int amdgpu_ctx_init(struct amdgpu_device *adev,
}
ctx->reset_counter = atomic_read(&adev->gpu_reset_counter);
ctx->reset_counter_query = ctx->reset_counter;
ctx->vram_lost_counter = atomic_read(&adev->vram_lost_counter);
ctx->init_priority = priority;
ctx->override_priority = AMD_SCHED_PRIORITY_UNSET;
@ -216,11 +217,11 @@ static int amdgpu_ctx_query(struct amdgpu_device *adev,
/* determine if a GPU reset has occured since the last call */
reset_counter = atomic_read(&adev->gpu_reset_counter);
/* TODO: this should ideally return NO, GUILTY, or INNOCENT. */
if (ctx->reset_counter == reset_counter)
if (ctx->reset_counter_query == reset_counter)
out->state.reset_status = AMDGPU_CTX_NO_RESET;
else
out->state.reset_status = AMDGPU_CTX_UNKNOWN_RESET;
ctx->reset_counter = reset_counter;
ctx->reset_counter_query = reset_counter;
mutex_unlock(&mgr->lock);
return 0;