Commit 1b6de591 authored by Alexander Shishkin's avatar Alexander Shishkin Committed by Ingo Molnar

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: default avatarAlexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: default avatarPeter 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.comSigned-off-by: default avatarIngo Molnar <mingo@kernel.org>
parent 65c7e6f1
...@@ -1135,7 +1135,7 @@ void intel_pt_interrupt(void) ...@@ -1135,7 +1135,7 @@ void intel_pt_interrupt(void)
* after PT has been disabled by pt_event_stop(). Make sure we don't * after PT has been disabled by pt_event_stop(). Make sure we don't
* do anything (particularly, re-enable) for this event here. * do anything (particularly, re-enable) for this event here.
*/ */
if (!ACCESS_ONCE(pt->handle_nmi)) if (!READ_ONCE(pt->handle_nmi))
return; return;
/* /*
...@@ -1237,7 +1237,7 @@ static void pt_event_start(struct perf_event *event, int mode) ...@@ -1237,7 +1237,7 @@ static void pt_event_start(struct perf_event *event, int mode)
goto fail_end_stop; goto fail_end_stop;
} }
ACCESS_ONCE(pt->handle_nmi) = 1; WRITE_ONCE(pt->handle_nmi, 1);
hwc->state = 0; hwc->state = 0;
pt_config_buffer(buf->cur->table, buf->cur_idx, pt_config_buffer(buf->cur->table, buf->cur_idx,
...@@ -1260,7 +1260,7 @@ static void pt_event_stop(struct perf_event *event, int mode) ...@@ -1260,7 +1260,7 @@ static void pt_event_stop(struct perf_event *event, int mode)
* Protect against the PMI racing with disabling wrmsr, * Protect against the PMI racing with disabling wrmsr,
* see comment in intel_pt_interrupt(). * see comment in intel_pt_interrupt().
*/ */
ACCESS_ONCE(pt->handle_nmi) = 0; WRITE_ONCE(pt->handle_nmi, 0);
pt_config_stop(event); pt_config_stop(event);
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment