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dma-fence: Change signature of __dma_fence_is_later

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With the goal of reducing the need for drivers to touch (and dereference)
fence->ops, we change the prototype of __dma_fence_is_later() to take
fence instead of fence->ops.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@igalia.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Link: https://lore.kernel.org/r/20250515095004.28318-2-tvrtko.ursulin@igalia.com
Signed-off-by: Christian König <christian.koenig@amd.com>
This commit is contained in:
Tvrtko Ursulin
2025-05-15 10:49:56 +01:00
committed by Christian König
parent 4963049ea1
commit 549810e918
5 changed files with 15 additions and 14 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/dma-buf/dma-fence-chain.c
View File

@@ -252,7 +252,7 @@ void dma_fence_chain_init(struct dma_fence_chain *chain,
chain->prev_seqno = 0;
/* Try to reuse the context of the previous chain node. */
if (prev_chain && __dma_fence_is_later(seqno, prev->seqno, prev->ops)) {
if (prev_chain && __dma_fence_is_later(prev, seqno, prev->seqno)) {
context = prev->context;
chain->prev_seqno = prev->seqno;
} else {

2
drivers/dma-buf/sw_sync.c
View File

@@ -170,7 +170,7 @@ static bool timeline_fence_signaled(struct dma_fence *fence)
{
struct sync_timeline *parent = dma_fence_parent(fence);
return !__dma_fence_is_later(fence->seqno, parent->value, fence->ops);
return !__dma_fence_is_later(fence, fence->seqno, parent->value);
}
static void timeline_fence_set_deadline(struct dma_fence *fence, ktime_t deadline)

2
drivers/gpu/drm/xe/xe_hw_fence.c
View File

@@ -165,7 +165,7 @@ static bool xe_hw_fence_signaled(struct dma_fence *dma_fence)
u32 seqno = xe_map_rd(xe, &fence->seqno_map, 0, u32);
return dma_fence->error ||
!__dma_fence_is_later(dma_fence->seqno, seqno, dma_fence->ops);
!__dma_fence_is_later(dma_fence, dma_fence->seqno, seqno);
}
static bool xe_hw_fence_enable_signaling(struct dma_fence *dma_fence)

14
drivers/gpu/drm/xe/xe_sched_job.c
View File

@@ -216,15 +216,17 @@ void xe_sched_job_set_error(struct xe_sched_job *job, int error)
bool xe_sched_job_started(struct xe_sched_job *job)
{
struct dma_fence *fence = dma_fence_chain_contained(job->fence);
struct xe_lrc *lrc = job->q->lrc[0];
return !__dma_fence_is_later(xe_sched_job_lrc_seqno(job),
xe_lrc_start_seqno(lrc),
dma_fence_chain_contained(job->fence)->ops);
return !__dma_fence_is_later(fence,
xe_sched_job_lrc_seqno(job),
xe_lrc_start_seqno(lrc));
}
bool xe_sched_job_completed(struct xe_sched_job *job)
{
struct dma_fence *fence = dma_fence_chain_contained(job->fence);
struct xe_lrc *lrc = job->q->lrc[0];
/*
@@ -232,9 +234,9 @@ bool xe_sched_job_completed(struct xe_sched_job *job)
* parallel handshake is done.
*/
return !__dma_fence_is_later(xe_sched_job_lrc_seqno(job),
xe_lrc_seqno(lrc),
dma_fence_chain_contained(job->fence)->ops);
return !__dma_fence_is_later(fence,
xe_sched_job_lrc_seqno(job),
xe_lrc_seqno(lrc));
}
void xe_sched_job_arm(struct xe_sched_job *job)

9
include/linux/dma-fence.h
View File

@@ -441,21 +441,20 @@ dma_fence_is_signaled(struct dma_fence *fence)
/**
* __dma_fence_is_later - return if f1 is chronologically later than f2
* @fence: fence in whose context to do the comparison
* @f1: the first fence's seqno
* @f2: the second fence's seqno from the same context
* @ops: dma_fence_ops associated with the seqno
*
* Returns true if f1 is chronologically later than f2. Both fences must be
* from the same context, since a seqno is not common across contexts.
*/
static inline bool __dma_fence_is_later(u64 f1, u64 f2,
const struct dma_fence_ops *ops)
static inline bool __dma_fence_is_later(struct dma_fence *fence, u64 f1, u64 f2)
{
/* This is for backward compatibility with drivers which can only handle
* 32bit sequence numbers. Use a 64bit compare when the driver says to
* do so.
*/
if (ops->use_64bit_seqno)
if (fence->ops->use_64bit_seqno)
return f1 > f2;
return (int)(lower_32_bits(f1) - lower_32_bits(f2)) > 0;
@@ -475,7 +474,7 @@ static inline bool dma_fence_is_later(struct dma_fence *f1,
if (WARN_ON(f1->context != f2->context))
return false;
return __dma_fence_is_later(f1->seqno, f2->seqno, f1->ops);
return __dma_fence_is_later(f1, f1->seqno, f2->seqno);
}
/**