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Groups > linux.kernel > #1456846
| From | Gustavo Padovan <gustavo@padovan.org> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH v5 4/5] Documentation: add doc for sync_file_get_fence() |
| Date | 2016-08-05 04:30 +0200 |
| Message-ID | <s2D3z-1uF-3@gated-at.bofh.it> (permalink) |
| References | <s2D3z-1uF-1@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
From: Gustavo Padovan <gustavo.padovan@collabora.co.uk> Document the new function added to sync_file.c v2: Adapt to fence_array Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk> Acked-by: Christian König <christian.koenig@amd.com> --- Documentation/sync_file.txt | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/Documentation/sync_file.txt b/Documentation/sync_file.txt index e8e2eba..ae2dbad1 100644 --- a/Documentation/sync_file.txt +++ b/Documentation/sync_file.txt @@ -64,6 +64,21 @@ The sync_file fd now can be sent to userspace. If the creation process fail, or the sync_file needs to be released by any other reason fput(sync_file->file) should be used. +Receiving Sync Files from Userspace +----------------------------------- + +When userspace needs to send an in-fence to the driver it pass file descriptor +of the Sync File to the kernel. The kernel then can retrieve the fences +from it. + +Interface: + struct fence *sync_file_get_fence(int fd); + + +The function return a struct fence pointer referencing the fence(s) in the Sync +File. + + References: [1] struct sync_file in include/linux/sync_file.h [2] All interfaces mentioned above defined in include/linux/sync_file.h -- 2.5.5
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[PATCH v5 1/5] dma-buf/fence-array: add fence_is_array() Gustavo Padovan <gustavo@padovan.org> - 2016-08-05 04:30 +0200
[PATCH v5 4/5] Documentation: add doc for sync_file_get_fence() Gustavo Padovan <gustavo@padovan.org> - 2016-08-05 04:30 +0200
Re: [PATCH v5 4/5] Documentation: add doc for sync_file_get_fence() Chris Wilson <chris@chris-wilson.co.uk> - 2016-08-05 09:30 +0200
[PATCH v5 5/5] dma-buf/sync_file: only enable fence signalling on poll() Gustavo Padovan <gustavo@padovan.org> - 2016-08-05 04:30 +0200
Re: [PATCH v5 5/5] dma-buf/sync_file: only enable fence signalling on poll() Chris Wilson <chris@chris-wilson.co.uk> - 2016-08-05 09:30 +0200
Re: [PATCH v5 5/5] dma-buf/sync_file: only enable fence signalling on poll() Chris Wilson <chris@chris-wilson.co.uk> - 2016-08-05 09:50 +0200
[PATCH v5 2/5] dma-buf/sync_file: refactor fence storage in struct sync_file Gustavo Padovan <gustavo@padovan.org> - 2016-08-05 04:30 +0200
[PATCH v5 3/5] dma-buf/sync_file: add sync_file_get_fence() Gustavo Padovan <gustavo@padovan.org> - 2016-08-05 04:40 +0200
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