From: Suresh Siddha <suresh.b.siddha@intel.com>
Date: Tue, 6 Dec 2011 19:26:34 +0000 (-0800)
Subject: sched, nohz: Set the NOHZ_BALANCE_KICK flag for idle load balancer
X-Git-Tag: firefly_0821_release~3680^2~3843^2~9^2~4
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=cd490c5b285544dc1319cf79c2ca0528a6447f61;p=firefly-linux-kernel-4.4.55.git

sched, nohz: Set the NOHZ_BALANCE_KICK flag for idle load balancer

Intention is to set the NOHZ_BALANCE_KICK flag for the 'ilb_cpu'. Not
for the 'cpu' which is the local cpu. Fix the typo.

Reported-by: Srivatsa Vaddagiri <vatsa@linux.vnet.ibm.com>
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1323199594.1984.18.camel@sbsiddha-desk.sc.intel.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---

diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 8be45edca41a..6482136f8991 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -4853,7 +4853,7 @@ static void nohz_balancer_kick(int cpu)
 	if (ilb_cpu >= nr_cpu_ids)
 		return;
 
-	if (test_and_set_bit(NOHZ_BALANCE_KICK, nohz_flags(cpu)))
+	if (test_and_set_bit(NOHZ_BALANCE_KICK, nohz_flags(ilb_cpu)))
 		return;
 	/*
 	 * Use smp_send_reschedule() instead of resched_cpu().