diff mbox

[tip/core/rcu] Fix TINY_RCU rcu_is_cpu_rrupt_from_idle check

Message ID 20121116192625.GA447@linux.vnet.ibm.com
State Accepted
Commit 351573a86d0ef17cbba1c5436706602692781bfe
Headers show

Commit Message

Paul E. McKenney Nov. 16, 2012, 7:26 p.m. UTC 
The rcu_is_cpu_rrupt_from_idle() needs to allow for one interrupt level
from the idle loop, but TINY_RCU checks for a call from the idle loop
itself.  This commit fixes this issue.

Reported-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Paul E. McKenney <paul.mckenney@linaro.org>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>

 b/kernel/rcutiny.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox

Patch

diff --git a/kernel/rcutiny.c b/kernel/rcutiny.c
index e4c6a59..e7dce58 100644
--- a/kernel/rcutiny.c
+++ b/kernel/rcutiny.c
@@ -195,7 +195,7 @@  EXPORT_SYMBOL(rcu_is_cpu_idle);
  */
 int rcu_is_cpu_rrupt_from_idle(void)
 {
-	return rcu_dynticks_nesting <= 0;
+	return rcu_dynticks_nesting <= 1;
 }
 
 /*