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authorMasami Hiramatsu <mhiramat@redhat.com>2010-03-03 22:38:50 -0500
committerIngo Molnar <mingo@elte.hu>2010-03-04 11:39:21 +0100
commite5a11016643d1ab7172193591506d33a844734cc (patch)
tree45e9c865c1e25c19142cb395e98ef13dd6d6f145 /include
parent32cb0dd50672056e510ccab442dc9c3a03be649e (diff)
x86: Issue at least one memory barrier in stop_machine_text_poke()
Fix stop_machine_text_poke() to issue smp_mb() before exiting waiting loop, and use cpu_relax() for waiting. Changes in v2: - Don't use ACCESS_ONCE(). Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com> Acked-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: systemtap <systemtap@sources.redhat.com> Cc: DLE <dle-develop@lists.sourceforge.net> Cc: Jason Baron <jbaron@redhat.com> LKML-Reference: <20100304033850.3819.74590.stgit@localhost6.localdomain6> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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