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tracing: wrap arguments with PARAMS

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Peter Zijlstra warned that TPPROTO and TPARGS might become something
other than a simple copy of itself. To prevent this from having
side effects in the TRACE_FORMAT macro in tracepoint.h, we add a
PARAMS() macro to be defined as just a wrapper.

Reported-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
This commit is contained in:
Steven Rostedt 2009-02-25 15:54:30 -05:00
parent eef62a6826
commit 3cdfdf91fc
1 changed files with 2 additions and 1 deletions
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include/linux/tracepoint.h
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@ -153,7 +153,8 @@ static inline void tracepoint_synchronize_unregister(void)
synchronize_sched();
}
#define PARAMS(args...) args
#define TRACE_FORMAT(name, proto, args, fmt) \
DECLARE_TRACE(name, TPPROTO(proto), TPARGS(args))
DECLARE_TRACE(name, PARAMS(proto), PARAMS(args))
#endif