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rcu: add rcu_read_*_sched_notrace()

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Impact: new API, useful for tracepoints and markers.

Add _notrace version to rcu_read_*_sched().

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Reviewed-by: Paul E McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Mathieu Desnoyers 2008-11-14 17:47:34 -05:00 committed by Ingo Molnar
parent c91add5fa6
commit 954e100d22
1 changed files with 2 additions and 0 deletions
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2
include/linux/rcupdate.h
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@ -142,6 +142,7 @@ struct rcu_head {
* on the write-side to insure proper synchronization. * on the write-side to insure proper synchronization.
*/ */
#define rcu_read_lock_sched() preempt_disable() #define rcu_read_lock_sched() preempt_disable()
#define rcu_read_lock_sched_notrace() preempt_disable_notrace()
/* /*
* rcu_read_unlock_sched - marks the end of a RCU-classic critical section * rcu_read_unlock_sched - marks the end of a RCU-classic critical section
@ -149,6 +150,7 @@ struct rcu_head {
* See rcu_read_lock_sched for more information. * See rcu_read_lock_sched for more information.
*/ */
#define rcu_read_unlock_sched() preempt_enable() #define rcu_read_unlock_sched() preempt_enable()
#define rcu_read_unlock_sched_notrace() preempt_enable_notrace()