rcuclassic: fix compilation NG

fix:

  CC      kernel/rcuclassic.o
kernel/rcuclassic.c: In function '__rcu_process_callbacks':
kernel/rcuclassic.c:561: error: 'flags' undeclared (first use in this function)
kernel/rcuclassic.c:561: error: (Each undeclared identifier is reported only once
kernel/rcuclassic.c:561: error: for each function it appears in.)

Declare missing variable flags.

Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 2 insertions, 0 deletions

diff --git a/kernel/rcuclassic.c b/kernel/rcuclassic.c
index c6b6cf55f3e2..01e761a6b38c 100644
--- a/kernel/rcuclassic.c
+++ b/kernel/rcuclassic.c
@@ -557,6 +557,8 @@ static void __rcu_process_callbacks(struct rcu_ctrlblk *rcp,
                 local_irq_enable();
 
                 if (rcu_batch_after(rdp->batch, rcp->pending)) {
+                        unsigned long flags;
+
                         /* and start it/schedule start if it's a new batch */
                         spin_lock_irqsave(&rcp->lock, flags);
                         if (rcu_batch_after(rdp->batch, rcp->pending)) {