From: Steven Rostedt <srostedt@redhat.com>
Date: Wed, 25 Feb 2009 20:54:30 +0000 (-0500)
Subject: tracing: wrap arguments with PARAMS
X-Git-Tag: v2.6.30-rc1~2^2~83^2
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=3cdfdf91fcc77cfc82592e2b5c2ab35abe819c41;p=karo-tx-linux.git

tracing: wrap arguments with PARAMS

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>
---

diff --git a/include/linux/tracepoint.h b/include/linux/tracepoint.h
index 3de09fa8e01d..62d13391a240 100644
--- a/include/linux/tracepoint.h
+++ b/include/linux/tracepoint.h
@@ -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