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| author | Peter Zijlstra <a.p.zijlstra@chello.nl> | 2010-10-17 12:15:00 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2010-10-18 19:59:01 +0200 |
| commit | ebf31f502492527e2b6b5e5cf85a4ebc7fc8a52e (patch) | |
| tree | 71d65e73fedaee937d90b52d6efa1d9cbeaeff42 | |
| parent | 7e54a5a0b655734326dc78c2b5efc1eb35497bb6 (diff) | |
| download | linux-3.10-ebf31f502492527e2b6b5e5cf85a4ebc7fc8a52e.tar.gz linux-3.10-ebf31f502492527e2b6b5e5cf85a4ebc7fc8a52e.tar.bz2 linux-3.10-ebf31f502492527e2b6b5e5cf85a4ebc7fc8a52e.zip | |
jump_label: Add COND_STMT(), reducer wrappery
The use of the JUMP_LABEL() construct ends up creating endless silly
wrappers, create a higher level construct to reduce this clutter.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Jason Baron <jbaron@redhat.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
| -rw-r--r-- | include/linux/jump_label.h | 10 | ||||
| -rw-r--r-- | include/linux/perf_event.h | 12 |
2 files changed, 12 insertions, 10 deletions
diff --git a/include/linux/jump_label.h b/include/linux/jump_label.h index 81be4962b7a..b67cb180e6e 100644 --- a/include/linux/jump_label.h +++ b/include/linux/jump_label.h @@ -61,4 +61,14 @@ static inline int jump_label_text_reserved(void *start, void *end) #endif +#define COND_STMT(key, stmt) \ +do { \ + __label__ jl_enabled; \ + JUMP_LABEL(key, jl_enabled); \ + if (0) { \ +jl_enabled: \ + stmt; \ + } \ +} while (0) + #endif diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h index 3b80cbf509e..057bf22a832 100644 --- a/include/linux/perf_event.h +++ b/include/linux/perf_event.h @@ -903,21 +903,13 @@ extern atomic_t perf_task_events; static inline void perf_event_task_sched_in(struct task_struct *task) { - JUMP_LABEL(&perf_task_events, have_events); - return; - -have_events: - __perf_event_task_sched_in(task); + COND_STMT(&perf_task_events, __perf_event_task_sched_in(task)); } static inline void perf_event_task_sched_out(struct task_struct *task, struct task_struct *next) { - JUMP_LABEL(&perf_task_events, have_events); - return; - -have_events: - __perf_event_task_sched_out(task, next); + COND_STMT(&perf_task_events, __perf_event_task_sched_out(task, next)); } extern int perf_event_init_task(struct task_struct *child); |