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authorSteven Rostedt <srostedt@redhat.com>2011-04-29 10:36:31 -0400
committerSteven Rostedt <rostedt@goodmis.org>2011-04-29 22:52:52 -0400
commit0778d9ad33898faab7bf6316108b471790376e35 (patch)
treec096fedf744e114a01acac52930f2bc8a741e863 /kernel/trace/ftrace.c
parent32673822e440eb92eb334631eb0a199d0c532d13 (diff)
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: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'kernel/trace/ftrace.c')
-rw-r--r--kernel/trace/ftrace.c16
1 files changed, 10 insertions, 6 deletions
diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index ee24fa1935a..4ff65599c97 100644
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -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