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[tip/core/rcu,19/47] rcu: Streamline code produced by __rcu_read_unlock()

Message ID 1328319922-30828-19-git-send-email-paulmck@linux.vnet.ibm.com
State Accepted
Commit afef20540f7cd1ea91bc1ac20be238389eee4003
Headers show

Commit Message

Paul E. McKenney Feb. 4, 2012, 1:44 a.m. UTC 
From: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>

This is a port of commit #be0e1e21 to TINY_PREEMPT_RCU.  This uses
noinline to prevent rcu_read_unlock_special() from being inlined into
__rcu_read_unlock().

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
---
 kernel/rcutiny_plugin.h |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
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Patch

diff --git a/kernel/rcutiny_plugin.h b/kernel/rcutiny_plugin.h
index 432ed2b..b58a320 100644
--- a/kernel/rcutiny_plugin.h
+++ b/kernel/rcutiny_plugin.h
@@ -544,7 +544,7 @@  EXPORT_SYMBOL_GPL(__rcu_read_lock);
  * notify RCU core processing or task having blocked during the RCU
  * read-side critical section.
  */
-static void rcu_read_unlock_special(struct task_struct *t)
+static noinline void rcu_read_unlock_special(struct task_struct *t)
 {
 	int empty;
 	int empty_exp;