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perf tools: Use ACCESS_ONCE() instead of volatile cast 

Use ACCESS_ONCE() instead of the cast to volatile and read. This is just
a style change which is reader friendly.

Signed-off-by: Pranith Kumar <bobby.prani@gmail.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1411484109-10442-1-git-send-email-bobby.prani@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Pranith Kumar 2014-09-23 10:55:08 -04:00 committed by Arnaldo Carvalho de Melo
parent 52e0283497
commit 1da34daf24
1 changed files with 1 additions and 1 deletions
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2
tools/perf/util/session.h
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@ -126,5 +126,5 @@ int __perf_session__set_tracepoints_handlers(struct perf_session *session,
extern volatile int session_done;
#define session_done() (*(volatile int *)(&session_done))
#define session_done() ACCESS_ONCE(session_done)
#endif /* __PERF_SESSION_H */