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(parent: 78c1cff) | patch
atomics: Allow architectures to define their own __atomic_op_* helpers
authorBoqun Feng <boqun.feng@gmail.com>
Tue, 15 Dec 2015 14:24:14 +0000 (22:24 +0800)
committerMichael Ellerman <mpe@ellerman.id.au>
Wed, 17 Feb 2016 13:11:02 +0000 (00:11 +1100)
commite1ab7f39d7e0dbfbdefe148be3ae4ee121e47ecc
tree136a0781bf5788d595c85b887deef198ccaae789tree | snapshot (tar.gz zip)
parent78c1cffdab7e5fc316be7d6a076e51ec3a0210fccommit | diff
atomics: Allow architectures to define their own __atomic_op_* helpers

Some architectures may have their special barriers for acquire, release
and fence semantics, so that general memory barriers(smp_mb__*_atomic())
in the default __atomic_op_*() may be too strong, so allow architectures
to define their own helpers which can overwrite the default helpers.

Signed-off-by: Boqun Feng <boqun.feng@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
include/linux/atomic.h diff | blob | blame | history