Documentation/atomic_t: Document cmpxchg() vs try_cmpxchg()

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There seems to be a significant amount of confusion around the new
try_cmpxchg(), despite this being more like the C11
atomic_compare_exchange_*() family. Add a few words of clarification
on how cmpxchg() and try_cmpxchg() relate to one another.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Will Deacon <will@kernel.org>
Link: https://lkml.kernel.org/r/YOMgPeMOmmiK3tXO@hirez.programming.kicks-ass.net

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Peter Zijlstra 2021-07-05 17:00:24 +02:00

parent e6b4457b05

commit d1bbfd0c7c

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Documentation/atomic_t.txt

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