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sched: Mark sched_clock() as notrace

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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>
This commit is contained in:
Mike Frysinger 2009-12-09 20:07:03 -05:00 committed by Ingo Molnar
parent 3786310afe
commit 1bbfa6f256
1 changed files with 2 additions and 1 deletions
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3
include/linux/sched.h
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@ -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);