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Subject[PATCH] sched: mark sched_clock() as notrace
Date
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>
---
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 89115ec..3f4fa73 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -1840,7 +1840,8 @@ 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);
--
1.6.5.5


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