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dma-buf/dma-resv: Add a way to set fence deadline

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Add a way to set a deadline on remaining resv fences according to the
requested usage.

Signed-off-by: Rob Clark <robdclark@chromium.org>
Reviewed-by: Christian König <christian.koenig@amd.com>
This commit is contained in:
Rob Clark 2023-02-18 12:35:04 -08:00
parent 786119ff32
commit d7d5a21dd6
2 changed files with 24 additions and 0 deletions
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22
drivers/dma-buf/dma-resv.c
View file

@ -684,6 +684,28 @@ long dma_resv_wait_timeout(struct dma_resv *obj, enum dma_resv_usage usage,
}
EXPORT_SYMBOL_GPL(dma_resv_wait_timeout);
/**
* dma_resv_set_deadline - Set a deadline on reservation's objects fences
* @obj: the reservation object
* @usage: controls which fences to include, see enum dma_resv_usage.
* @deadline: the requested deadline (MONOTONIC)
*
* May be called without holding the dma_resv lock. Sets @deadline on
* all fences filtered by @usage.
*/
void dma_resv_set_deadline(struct dma_resv *obj, enum dma_resv_usage usage,
ktime_t deadline)
{
struct dma_resv_iter cursor;
struct dma_fence *fence;
dma_resv_iter_begin(&cursor, obj, usage);
dma_resv_for_each_fence_unlocked(&cursor, fence) {
dma_fence_set_deadline(fence, deadline);
}
dma_resv_iter_end(&cursor);
}
EXPORT_SYMBOL_GPL(dma_resv_set_deadline);
/**
* dma_resv_test_signaled - Test if a reservation object's fences have been

2
include/linux/dma-resv.h
View file

@ -479,6 +479,8 @@ int dma_resv_get_singleton(struct dma_resv *obj, enum dma_resv_usage usage,
int dma_resv_copy_fences(struct dma_resv *dst, struct dma_resv *src);
long dma_resv_wait_timeout(struct dma_resv *obj, enum dma_resv_usage usage,
bool intr, unsigned long timeout);
void dma_resv_set_deadline(struct dma_resv *obj, enum dma_resv_usage usage,
ktime_t deadline);
bool dma_resv_test_signaled(struct dma_resv *obj, enum dma_resv_usage usage);
void dma_resv_describe(struct dma_resv *obj, struct seq_file *seq);