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rcu: Add "notrace" to RCU function headers used by ftrace

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Both rcu_read_lock_sched_notrace() and
rcu_read_unlock_sched_notrace() are used by ftrace, and thus
need to be marked "notrace".

Unfortunately, my naive assumption that gcc would see the inner
"notrace" does not hold.

Kudos to Lai Jiangshan for noting this.

Reported-by: Ingo Molnar <mingo@elte.hu>
Bug-spotted-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: laijs@cn.fujitsu.com
Cc: dipankar@in.ibm.com
Cc: akpm@linux-foundation.org
Cc: mathieu.desnoyers@polymtl.ca
Cc: josht@linux.vnet.ibm.com
Cc: dvhltc@us.ibm.com
Cc: niv@us.ibm.com
Cc: peterz@infradead.org
Cc: rostedt@goodmis.org
LKML-Reference: <12511321213243-git-send-email->
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Paul E. McKenney 2009-08-24 09:42:00 -07:00 committed by Ingo Molnar
parent 6b3ef48adf
commit 7c614d6461
1 changed files with 2 additions and 2 deletions
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4
include/linux/rcupdate.h
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@ -191,7 +191,7 @@ static inline void rcu_read_lock_sched(void)
__acquire(RCU_SCHED);
rcu_read_acquire();
}
static inline void rcu_read_lock_sched_notrace(void)
static inline notrace void rcu_read_lock_sched_notrace(void)
{
preempt_disable_notrace();
__acquire(RCU_SCHED);
@ -209,7 +209,7 @@ static inline void rcu_read_unlock_sched(void)
__release(RCU_SCHED);
preempt_enable();
}
static inline void rcu_read_unlock_sched_notrace(void)
static inline notrace void rcu_read_unlock_sched_notrace(void)
{
rcu_read_release();
__release(RCU_SCHED);