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perf/x86/intel/pt: Convert ACCESS_ONCE()s 

This patch converts remaining ACCESS_ONCE() instances into READ_ONCE()
and WRITE_ONCE() as appropriate.

Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Cc: vince@deater.net
Link: http://lkml.kernel.org/r/1461857746-31346-2-git-send-email-alexander.shishkin@linux.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
hifive-unleashed-5.1
Alexander Shishkin 2016-04-28 18:35:44 +03:00 committed by Ingo Molnar
parent 65c7e6f1c4
commit 1b6de59171
1 changed files with 3 additions and 3 deletions
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6
arch/x86/events/intel/pt.c
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@ -1135,7 +1135,7 @@ void intel_pt_interrupt(void)
* after PT has been disabled by pt_event_stop(). Make sure we don't
* do anything (particularly, re-enable) for this event here.
*/
if (!ACCESS_ONCE(pt->handle_nmi))
if (!READ_ONCE(pt->handle_nmi))
return;
/*
@ -1237,7 +1237,7 @@ static void pt_event_start(struct perf_event *event, int mode)
goto fail_end_stop;
}
ACCESS_ONCE(pt->handle_nmi) = 1;
WRITE_ONCE(pt->handle_nmi, 1);
hwc->state = 0;
pt_config_buffer(buf->cur->table, buf->cur_idx,
@ -1260,7 +1260,7 @@ static void pt_event_stop(struct perf_event *event, int mode)
* Protect against the PMI racing with disabling wrmsr,
* see comment in intel_pt_interrupt().
*/
ACCESS_ONCE(pt->handle_nmi) = 0;
WRITE_ONCE(pt->handle_nmi, 0);
pt_config_stop(event);