From: pbonzini@redhat.com (Paolo Bonzini)
Subject: [ltt-dev] [URCU PATCH] atomic: provide seq_cst semantics on powerpc
Date: Thu, 22 Sep 2011 09:53:14 +0200 [thread overview]
Message-ID: <4E7AE96A.8060307@redhat.com> (raw)
In-Reply-To: <20110922002712.GA8516@Krystal>
On 09/22/2011 02:27 AM, Mathieu Desnoyers wrote:
> Paolo: if you are interested in optimising powerpc uatomic ops further,
> add, sub, inc, dec, "or", "and", basically anything that is not
> xchg/add_return/cmpxchg could use versions of the cmpxchg that does not
> have the lwsync/sync barriers.
Or they could just be rewritten in assembly with a manual ll/sc loop.
Paolo
next prev parent reply other threads:[~2011-09-22 7:53 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-09-20 7:12 Paolo Bonzini
2011-09-20 16:35 ` Mathieu Desnoyers
2011-09-21 23:56 ` Paul E. McKenney
2011-09-22 0:27 ` Mathieu Desnoyers
2011-09-22 7:53 ` Paolo Bonzini [this message]
2011-09-22 9:13 ` Mathieu Desnoyers
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