[RFC PATCH 3/5] asm-generic/bitops/atomic.h: Rewrite using atomic_fetch_*
From: peterz@infradead.org (Peter Zijlstra)
Date: 2018-02-20 13:02:11
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On Mon, Feb 19, 2018 at 02:01:51PM +0000, Will Deacon wrote:
If it's defined, then we could consider using cmpxchg64 to build atomic64 instead of the locks. But even then, I'm not sure we're really helping anybody out in practice.
yeah, most 64bit archs have more atomics or ll/sc and would not use it anyway I suppose.