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| author | Christian König <christian.koenig@amd.com> | 2022-03-11 12:27:53 +0300 |
|---|---|---|
| committer | Christian König <christian.koenig@amd.com> | 2022-03-25 16:18:28 +0300 |
| commit | 64a8f92fd783e750cdb81af75942dcd53bbf61bd (patch) | |
| tree | cbddd8445aae570b7a0cca7fd66c4c9245fcdd34 /include/linux/dma-fence-array.h | |
| parent | caaf2ae712b7cc3c7717898fe267dbf882a502ef (diff) | |
| download | linux-64a8f92fd783e750cdb81af75942dcd53bbf61bd.tar.xz | |
dma-buf: add dma_fence_unwrap v2
Add a general purpose helper to deep dive into dma_fence_chain/dma_fence_array
structures and iterate over all the fences in them.
This is useful when we need to flatten out all fences in those structures.
v2: some selftests cleanup, improved function naming and documentation
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20220311110244.1245-1-christian.koenig@amd.com
Diffstat (limited to 'include/linux/dma-fence-array.h')
| -rw-r--r-- | include/linux/dma-fence-array.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/dma-fence-array.h b/include/linux/dma-fence-array.h index e34dcb0bb462..ec7f25def392 100644 --- a/include/linux/dma-fence-array.h +++ b/include/linux/dma-fence-array.h @@ -69,6 +69,8 @@ to_dma_fence_array(struct dma_fence *fence) * * Test if @array is a dma_fence_array object and if yes iterate over all fences * in the array. If not just iterate over the fence in @array itself. + * + * For a deep dive iterator see dma_fence_unwrap_for_each(). */ #define dma_fence_array_for_each(fence, index, head) \ for (index = 0, fence = dma_fence_array_first(head); fence; \ |