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rcu: Fix synchronize_rcu() for TREE_PREEMPT_RCU

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The redirection of synchronize_sched() to synchronize_rcu() was
appropriate for TREE_RCU, but not for TREE_PREEMPT_RCU.

Fix this by creating an underlying synchronize_sched().  TREE_RCU
then redirects synchronize_rcu() to synchronize_sched(), while
TREE_PREEMPT_RCU has its own version of synchronize_rcu().

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: josh@joshtriplett.org
Cc: dvhltc@us.ibm.com
Cc: niv@us.ibm.com
Cc: peterz@infradead.org
Cc: rostedt@goodmis.org
Cc: Valdis.Kletnieks@vt.edu
LKML-Reference: <12528585111916-git-send-email->
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Paul E. McKenney
2009-09-13 09:15:11 -07:00
committed by Ingo Molnar
parent c3422bea5f
commit 16e3081191
3 changed files with 50 additions and 21 deletions
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4
include/linux/rcutree.h
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@@ -53,6 +53,8 @@ static inline void __rcu_read_unlock(void)
preempt_enable();
}
#define __synchronize_sched() synchronize_rcu()
static inline void exit_rcu(void)
{
}
@@ -68,8 +70,6 @@ static inline void __rcu_read_unlock_bh(void)
local_bh_enable();
}
#define __synchronize_sched() synchronize_rcu()
extern void call_rcu_sched(struct rcu_head *head,
void (*func)(struct rcu_head *rcu));