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| author | Rob Clark <robdclark@chromium.org> | 2023-08-23 14:54:56 -0700 |
|---|---|---|
| committer | Dmitry Baryshkov <dmitry.baryshkov@linaro.org> | 2023-12-02 01:18:46 +0200 |
| commit | 70e67aaec2f4706df0006423eebca813b00f5840 (patch) | |
| tree | 76acee6cb47f7812cc3f38b4c2a1a8664e0dc4c7 /drivers/dma-buf/sync_debug.h | |
| parent | 63ee44540205d993854f143a5ab1d7d9e63ffcf1 (diff) | |
| download | linux-70e67aaec2f4706df0006423eebca813b00f5840.tar.gz linux-70e67aaec2f4706df0006423eebca813b00f5840.tar.bz2 linux-70e67aaec2f4706df0006423eebca813b00f5840.zip | |
dma-buf/sw_sync: Add fence deadline support
This consists of simply storing the most recent deadline, and adding an
ioctl to retrieve the deadline. This can be used in conjunction with
the SET_DEADLINE ioctl on a fence fd for testing. Ie. create various
sw_sync fences, merge them into a fence-array, set deadline on the
fence-array and confirm that it is propagated properly to each fence.
v2: Switch UABI to express deadline as u64
v3: More verbose UAPI docs, show how to convert from timespec
v4: Better comments, track the soonest deadline, as a normal fence
implementation would, return an error if no deadline set.
Signed-off-by: Rob Clark <robdclark@chromium.org>
Reviewed-by: Christian König <christian.koenig@amd.com>
Acked-by: Pekka Paalanen <pekka.paalanen@collabora.com>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230823215458.203366-4-robdclark@gmail.com
Diffstat (limited to 'drivers/dma-buf/sync_debug.h')
| -rw-r--r-- | drivers/dma-buf/sync_debug.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/dma-buf/sync_debug.h b/drivers/dma-buf/sync_debug.h index 6176e52ba2d7..a1bdd62efccd 100644 --- a/drivers/dma-buf/sync_debug.h +++ b/drivers/dma-buf/sync_debug.h @@ -55,11 +55,13 @@ static inline struct sync_timeline *dma_fence_parent(struct dma_fence *fence) * @base: base fence object * @link: link on the sync timeline's list * @node: node in the sync timeline's tree + * @deadline: the earliest fence deadline hint */ struct sync_pt { struct dma_fence base; struct list_head link; struct rb_node node; + ktime_t deadline; }; extern const struct file_operations sw_sync_debugfs_fops; |