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seqlock: add SMP_WMB to seqlock

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This commit added SMP_WMB to seqlock.

Signed-off-by: hujun5 <hujun5@xiaomi.com>
This commit is contained in:
hujun5
2025-09-19 20:17:04 +08:00
committed by Alan C. Assis
parent 65247f2603
commit 46ad770b60
1 changed files with 2 additions and 0 deletions
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include/nuttx/seqlock.h
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@@ -161,6 +161,7 @@ irqstate_t write_seqlock_irqsave(FAR seqcount_t *s)
irqstate_t flags = spin_lock_irqsave(&s->lock); irqstate_t flags = spin_lock_irqsave(&s->lock);
s->sequence++; s->sequence++;
SMP_WMB();
return flags; return flags;
} }
@@ -183,6 +184,7 @@ irqstate_t write_seqlock_irqsave(FAR seqcount_t *s)
static inline_function static inline_function
void write_sequnlock_irqrestore(seqcount_t *s, irqstate_t flags) void write_sequnlock_irqrestore(seqcount_t *s, irqstate_t flags)
{ {
SMP_WMB();
s->sequence++; s->sequence++;
spin_unlock_irqrestore(&s->lock, flags); spin_unlock_irqrestore(&s->lock, flags);
} }