From: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Date: Thu, 22 Sep 2011 00:25:20 +0000 (-0400)
Subject: atomic: provide seq_cst semantics on powerpc
X-Git-Tag: v0.6.5~12
X-Git-Url: http://git.liburcu.org/?a=commitdiff_plain;h=dabbe4f87217fc22279a02d98db4984b3187b77c;hp=dabbe4f87217fc22279a02d98db4984b3187b77c;p=userspace-rcu.git

atomic: provide seq_cst semantics on powerpc

We provide sequential consistency semantic over all architectures for
cmpxchg and add_return family of primitives, but the powerpc
implementation does not match that.

Change the isync after the atomic primitives to sync, and explain the
scheme.

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
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