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| author | Matthew Brost <matthew.brost@intel.com> | 2024-07-03 21:16:48 -0700 |
|---|---|---|
| committer | Matthew Brost <matthew.brost@intel.com> | 2024-07-03 22:27:02 -0700 |
| commit | 96e7ebb220f8a873321cfc5a87bc4533d36ec444 (patch) | |
| tree | 14c66eb51f03fb384549884647f0c6a89a049176 /drivers/gpu/drm/xe/xe_exec_queue.c | |
| parent | drm/xe: Add xe_vm_pgtable_update_op to xe_vma_ops (diff) | |
| download | linux-96e7ebb220f8a873321cfc5a87bc4533d36ec444.tar.gz linux-96e7ebb220f8a873321cfc5a87bc4533d36ec444.zip | |
drm/xe: Add xe_exec_queue_last_fence_test_dep
Helpful to determine if a bind can immediately use CPU or needs to be
deferred a drm scheduler job.
v7:
- Better wording in kernel doc (Matthew Auld)
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240704041652.272920-4-matthew.brost@intel.com
Diffstat (limited to 'drivers/gpu/drm/xe/xe_exec_queue.c')
| -rw-r--r-- | drivers/gpu/drm/xe/xe_exec_queue.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/gpu/drm/xe/xe_exec_queue.c b/drivers/gpu/drm/xe/xe_exec_queue.c index 0ba37835849b..3336a01a1006 100644 --- a/drivers/gpu/drm/xe/xe_exec_queue.c +++ b/drivers/gpu/drm/xe/xe_exec_queue.c @@ -906,3 +906,26 @@ void xe_exec_queue_last_fence_set(struct xe_exec_queue *q, struct xe_vm *vm, xe_exec_queue_last_fence_put(q, vm); q->last_fence = dma_fence_get(fence); } + +/** + * xe_exec_queue_last_fence_test_dep - Test last fence dependency of queue + * @q: The exec queue + * @vm: The VM the engine does a bind or exec for + * + * Returns: + * -ETIME if there exists an unsignalled last fence dependency, zero otherwise. + */ +int xe_exec_queue_last_fence_test_dep(struct xe_exec_queue *q, struct xe_vm *vm) +{ + struct dma_fence *fence; + int err = 0; + + fence = xe_exec_queue_last_fence_get(q, vm); + if (fence) { + err = test_bit(DMA_FENCE_FLAG_SIGNALED_BIT, &fence->flags) ? + 0 : -ETIME; + dma_fence_put(fence); + } + + return err; +} |