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[PATCH v0 1/3] perf/x86/intel/pt: Convert ACCESS_ONCE()s

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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>
---
 arch/x86/events/intel/pt.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/x86/events/intel/pt.c b/arch/x86/events/intel/pt.c
index 05ef87d839..e88915ff98 100644
--- a/arch/x86/events/intel/pt.c
+++ b/arch/x86/events/intel/pt.c
@@ -933,7 +933,7 @@ 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;
 
 	/*
@@ -1035,7 +1035,7 @@ 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,
@@ -1058,7 +1058,7 @@ 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);
 
-- 
2.8.0.rc3

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[PATCH v0 1/3] perf/x86/intel/pt: Convert ACCESS_ONCE()s Alexander Shishkin <alexander.shishkin@linux.intel.com> - 2016-04-28 17:40 +0200
  [tip:perf/core] perf/x86/intel/pt: Convert ACCESS_ONCE()s tip-bot for Alexander Shishkin <tipbot@zytor.com> - 2016-05-05 12:00 +0200

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