From: Jason Ekstrand <jason@jlekstrand.net> To: dri-devel@lists.freedesktop.org, intel-gfx@lists.freedesktop.org Cc: "Christian König" <ckoenig.leichtzumerken@gmail.com>, "Christian König" <christian.koenig@amd.com>, "Jason Ekstrand" <jason@jlekstrand.net> Subject: [PATCH 1/6] dma-buf: add dma_fence_array_for_each (v2) Date: Mon, 24 May 2021 15:59:49 -0500 [thread overview] Message-ID: <20210524205954.872814-2-jason@jlekstrand.net> (raw) In-Reply-To: <20210524205954.872814-1-jason@jlekstrand.net> From: Christian König <ckoenig.leichtzumerken@gmail.com> Add a helper to iterate over all fences in a dma_fence_array object. v2 (Jason Ekstrand) - Return NULL from dma_fence_array_first if head == NULL. This matches the iterator behavior of dma_fence_chain_for_each in that it iterates zero times if head == NULL. - Return NULL from dma_fence_array_next if index > array->num_fences. Signed-off-by: Jason Ekstrand <jason@jlekstrand.net> Reviewed-by: Jason Ekstrand <jason@jlekstrand.net> Reviewed-by: Christian König <christian.koenig@amd.com> --- drivers/dma-buf/dma-fence-array.c | 27 +++++++++++++++++++++++++++ include/linux/dma-fence-array.h | 17 +++++++++++++++++ 2 files changed, 44 insertions(+) diff --git a/drivers/dma-buf/dma-fence-array.c b/drivers/dma-buf/dma-fence-array.c index d3fbd950be944..2ac1afc697d0f 100644 --- a/drivers/dma-buf/dma-fence-array.c +++ b/drivers/dma-buf/dma-fence-array.c @@ -201,3 +201,30 @@ bool dma_fence_match_context(struct dma_fence *fence, u64 context) return true; } EXPORT_SYMBOL(dma_fence_match_context); + +struct dma_fence *dma_fence_array_first(struct dma_fence *head) +{ + struct dma_fence_array *array; + + if (!head) + return NULL; + + array = to_dma_fence_array(head); + if (!array) + return head; + + return array->fences[0]; +} +EXPORT_SYMBOL(dma_fence_array_first); + +struct dma_fence *dma_fence_array_next(struct dma_fence *head, + unsigned int index) +{ + struct dma_fence_array *array = to_dma_fence_array(head); + + if (!array || index >= array->num_fences) + return NULL; + + return array->fences[index]; +} +EXPORT_SYMBOL(dma_fence_array_next); diff --git a/include/linux/dma-fence-array.h b/include/linux/dma-fence-array.h index 303dd712220fd..588ac8089dd61 100644 --- a/include/linux/dma-fence-array.h +++ b/include/linux/dma-fence-array.h @@ -74,6 +74,19 @@ to_dma_fence_array(struct dma_fence *fence) return container_of(fence, struct dma_fence_array, base); } +/** + * dma_fence_array_for_each - iterate over all fences in array + * @fence: current fence + * @index: index into the array + * @head: potential dma_fence_array object + * + * 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. + */ +#define dma_fence_array_for_each(fence, index, head) \ + for (index = 0, fence = dma_fence_array_first(head); fence; \ + ++(index), fence = dma_fence_array_next(head, index)) + struct dma_fence_array *dma_fence_array_create(int num_fences, struct dma_fence **fences, u64 context, unsigned seqno, @@ -81,4 +94,8 @@ struct dma_fence_array *dma_fence_array_create(int num_fences, bool dma_fence_match_context(struct dma_fence *fence, u64 context); +struct dma_fence *dma_fence_array_first(struct dma_fence *head); +struct dma_fence *dma_fence_array_next(struct dma_fence *head, + unsigned int index); + #endif /* __LINUX_DMA_FENCE_ARRAY_H */ -- 2.31.1
WARNING: multiple messages have this Message-ID (diff)
From: Jason Ekstrand <jason@jlekstrand.net> To: dri-devel@lists.freedesktop.org, intel-gfx@lists.freedesktop.org Cc: "Christian König" <ckoenig.leichtzumerken@gmail.com>, "Christian König" <christian.koenig@amd.com> Subject: [Intel-gfx] [PATCH 1/6] dma-buf: add dma_fence_array_for_each (v2) Date: Mon, 24 May 2021 15:59:49 -0500 [thread overview] Message-ID: <20210524205954.872814-2-jason@jlekstrand.net> (raw) In-Reply-To: <20210524205954.872814-1-jason@jlekstrand.net> From: Christian König <ckoenig.leichtzumerken@gmail.com> Add a helper to iterate over all fences in a dma_fence_array object. v2 (Jason Ekstrand) - Return NULL from dma_fence_array_first if head == NULL. This matches the iterator behavior of dma_fence_chain_for_each in that it iterates zero times if head == NULL. - Return NULL from dma_fence_array_next if index > array->num_fences. Signed-off-by: Jason Ekstrand <jason@jlekstrand.net> Reviewed-by: Jason Ekstrand <jason@jlekstrand.net> Reviewed-by: Christian König <christian.koenig@amd.com> --- drivers/dma-buf/dma-fence-array.c | 27 +++++++++++++++++++++++++++ include/linux/dma-fence-array.h | 17 +++++++++++++++++ 2 files changed, 44 insertions(+) diff --git a/drivers/dma-buf/dma-fence-array.c b/drivers/dma-buf/dma-fence-array.c index d3fbd950be944..2ac1afc697d0f 100644 --- a/drivers/dma-buf/dma-fence-array.c +++ b/drivers/dma-buf/dma-fence-array.c @@ -201,3 +201,30 @@ bool dma_fence_match_context(struct dma_fence *fence, u64 context) return true; } EXPORT_SYMBOL(dma_fence_match_context); + +struct dma_fence *dma_fence_array_first(struct dma_fence *head) +{ + struct dma_fence_array *array; + + if (!head) + return NULL; + + array = to_dma_fence_array(head); + if (!array) + return head; + + return array->fences[0]; +} +EXPORT_SYMBOL(dma_fence_array_first); + +struct dma_fence *dma_fence_array_next(struct dma_fence *head, + unsigned int index) +{ + struct dma_fence_array *array = to_dma_fence_array(head); + + if (!array || index >= array->num_fences) + return NULL; + + return array->fences[index]; +} +EXPORT_SYMBOL(dma_fence_array_next); diff --git a/include/linux/dma-fence-array.h b/include/linux/dma-fence-array.h index 303dd712220fd..588ac8089dd61 100644 --- a/include/linux/dma-fence-array.h +++ b/include/linux/dma-fence-array.h @@ -74,6 +74,19 @@ to_dma_fence_array(struct dma_fence *fence) return container_of(fence, struct dma_fence_array, base); } +/** + * dma_fence_array_for_each - iterate over all fences in array + * @fence: current fence + * @index: index into the array + * @head: potential dma_fence_array object + * + * 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. + */ +#define dma_fence_array_for_each(fence, index, head) \ + for (index = 0, fence = dma_fence_array_first(head); fence; \ + ++(index), fence = dma_fence_array_next(head, index)) + struct dma_fence_array *dma_fence_array_create(int num_fences, struct dma_fence **fences, u64 context, unsigned seqno, @@ -81,4 +94,8 @@ struct dma_fence_array *dma_fence_array_create(int num_fences, bool dma_fence_match_context(struct dma_fence *fence, u64 context); +struct dma_fence *dma_fence_array_first(struct dma_fence *head); +struct dma_fence *dma_fence_array_next(struct dma_fence *head, + unsigned int index); + #endif /* __LINUX_DMA_FENCE_ARRAY_H */ -- 2.31.1 _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/intel-gfx
next prev parent reply other threads:[~2021-05-24 21:00 UTC|newest] Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-05-24 20:59 [PATCH 0/6] dma-buf: Add an API for exporting sync files (v10) Jason Ekstrand 2021-05-24 20:59 ` [Intel-gfx] " Jason Ekstrand 2021-05-24 20:59 ` Jason Ekstrand [this message] 2021-05-24 20:59 ` [Intel-gfx] [PATCH 1/6] dma-buf: add dma_fence_array_for_each (v2) Jason Ekstrand 2021-05-24 20:59 ` [PATCH 2/6] dma-buf: Rename dma_resv helpers from _rcu to _unlocked Jason Ekstrand 2021-05-24 20:59 ` [Intel-gfx] " Jason Ekstrand 2021-05-25 14:57 ` Daniel Vetter 2021-05-25 14:57 ` [Intel-gfx] " Daniel Vetter 2021-05-24 20:59 ` [PATCH 3/6] dma-buf: add dma_resv_get_singleton_unlocked (v4) Jason Ekstrand 2021-05-24 20:59 ` [Intel-gfx] " Jason Ekstrand 2021-05-24 20:59 ` [PATCH 4/6] dma-buf: Add an API for exporting sync files (v9) Jason Ekstrand 2021-05-24 20:59 ` [Intel-gfx] " Jason Ekstrand 2021-05-25 15:08 ` Daniel Vetter 2021-05-25 15:08 ` [Intel-gfx] " Daniel Vetter 2021-05-24 20:59 ` [PATCH 5/6] RFC: dma-buf: Add an extra fence to dma_resv_get_singleton_unlocked Jason Ekstrand 2021-05-24 20:59 ` [Intel-gfx] " Jason Ekstrand 2021-05-25 15:25 ` Daniel Vetter 2021-05-25 15:25 ` Daniel Vetter 2021-05-24 20:59 ` [PATCH 6/6] RFC: dma-buf: Add an API for importing sync files (v6) Jason Ekstrand 2021-05-24 20:59 ` [Intel-gfx] " Jason Ekstrand 2021-05-25 15:37 ` Daniel Vetter 2021-05-25 15:37 ` [Intel-gfx] " Daniel Vetter 2021-05-25 19:19 ` Jason Ekstrand 2021-05-25 19:19 ` [Intel-gfx] " Jason Ekstrand 2021-05-25 19:33 ` Daniel Vetter 2021-05-25 19:33 ` [Intel-gfx] " Daniel Vetter 2021-05-24 22:30 ` [Intel-gfx] ✗ Fi.CI.CHECKPATCH: warning for dma-buf: Add an API for exporting sync files (v10) Patchwork 2021-05-24 22:33 ` [Intel-gfx] ✗ Fi.CI.SPARSE: " Patchwork 2021-05-24 22:55 ` [Intel-gfx] ✓ Fi.CI.BAT: success " Patchwork 2021-05-25 5:27 ` [Intel-gfx] ✗ Fi.CI.IGT: failure " Patchwork 2021-06-10 21:09 [PATCH 0/6] dma-buf: Add an API for exporting sync files (v12) Jason Ekstrand 2021-06-10 21:09 ` [PATCH 1/6] dma-buf: Add dma_fence_array_for_each (v2) Jason Ekstrand
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