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authorJason Baron <jbaron@redhat.com>2010-09-17 11:09:13 -0400
committerSteven Rostedt <rostedt@goodmis.org>2010-09-22 16:31:01 -0400
commit8f7b50c514206211cc282a4247f7b12f18dee674 (patch)
tree8d69af92e9ba46f8f775a300ba863040c817e77c /include/linux/tracepoint.h
parent4c3ef6d79328c0e23ade60cbfc8d496123a6855c (diff)
downloadop-kernel-dev-8f7b50c514206211cc282a4247f7b12f18dee674.zip
op-kernel-dev-8f7b50c514206211cc282a4247f7b12f18dee674.tar.gz
jump label: Tracepoint support for jump labels
Make use of the jump label infrastructure for tracepoints. Signed-off-by: Jason Baron <jbaron@redhat.com> LKML-Reference: <a9ba2056e2c9cf332c3c300b577463ce66ff23a8.1284733808.git.jbaron@redhat.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'include/linux/tracepoint.h')
-rw-r--r--include/linux/tracepoint.h5
1 files changed, 4 insertions, 1 deletions
diff --git a/include/linux/tracepoint.h b/include/linux/tracepoint.h
index 103d1b6..a4a90b67 100644
--- a/include/linux/tracepoint.h
+++ b/include/linux/tracepoint.h
@@ -17,6 +17,7 @@
#include <linux/errno.h>
#include <linux/types.h>
#include <linux/rcupdate.h>
+#include <linux/jump_label.h>
struct module;
struct tracepoint;
@@ -145,7 +146,9 @@ static inline void tracepoint_update_probe_range(struct tracepoint *begin,
extern struct tracepoint __tracepoint_##name; \
static inline void trace_##name(proto) \
{ \
- if (unlikely(__tracepoint_##name.state)) \
+ JUMP_LABEL(&__tracepoint_##name.state, do_trace); \
+ return; \
+do_trace: \
__DO_TRACE(&__tracepoint_##name, \
TP_PROTO(data_proto), \
TP_ARGS(data_args)); \
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