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Commit 0778d9ad authored by Steven Rostedt's avatar Steven Rostedt Committed by Steven Rostedt
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ftrace: Make FTRACE_WARN_ON() work in if condition 



Let FTRACE_WARN_ON() be used as a stand alone statement or
inside a conditional: if (FTRACE_WARN_ON(x))

Signed-off-by: default avatarSteven Rostedt <rostedt@goodmis.org>
parent 32673822

kernel/trace/ftrace.c

+10 −6
Original line number Diff line number Diff line
@@ -39,16 +39,20 @@ 
#include "trace_stat.h"



#define FTRACE_WARN_ON(cond)			\

	do {					\

		if (WARN_ON(cond))		\

	({					\

		int ___r = cond;		\

		if (WARN_ON(___r))		\

			ftrace_kill();		\

	} while (0)

		___r;				\

	})



#define FTRACE_WARN_ON_ONCE(cond)		\

	do {					\

		if (WARN_ON_ONCE(cond))		\

	({					\

		int ___r = cond;		\

		if (WARN_ON_ONCE(___r))		\

			ftrace_kill();		\

	} while (0)

		___r;				\

	})



/* hash bits for specific function selection */

#define FTRACE_HASH_BITS 7