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| author | Mike Frysinger <vapier@gentoo.org> | 2009-12-09 20:07:03 -0500 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-12-10 08:30:27 +0100 |
| commit | 1bbfa6f25673019dc0acc9308b667c96f6cda8bf (patch) | |
| tree | d6a49eaf657c7981e2734758fbb50e2265997c37 /include/linux/sched.h | |
| parent | 3786310afe738070be31c439b8deeaeb69b9735d (diff) | |
| download | lwn-1bbfa6f25673019dc0acc9308b667c96f6cda8bf.tar.gz lwn-1bbfa6f25673019dc0acc9308b667c96f6cda8bf.zip | |
sched: Mark sched_clock() as notrace
The core ftrace code (trace_clock_local) calls sched_clock()
directly, so we don't want to recurisvely trigger the ftrace
code. Rather than update every sched_clock() definition, tag
the prototype for everyone as notrace.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Cc: Peter Zijlstra <peterz@infradead.org>
LKML-Reference: <1260407223-10900-1-git-send-email-vapier@gentoo.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/linux/sched.h')
| -rw-r--r-- | include/linux/sched.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h index 75e6e60bf583..576d838adf68 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -1836,7 +1836,8 @@ static inline int set_cpus_allowed(struct task_struct *p, cpumask_t new_mask) extern int sched_clock_stable; #endif -extern unsigned long long sched_clock(void); +/* ftrace calls sched_clock() directly */ +extern unsigned long long notrace sched_clock(void); extern void sched_clock_init(void); extern u64 sched_clock_cpu(int cpu); |