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| author | Suresh Siddha <suresh.b.siddha@intel.com> | 2011-12-06 11:19:37 -0800 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2011-12-06 20:51:27 +0100 |
| commit | 8a6d42d1b32ad239c28f445138ea9c19aa52dd20 (patch) | |
| tree | ddb25da63a4a712d48c545e1b2fce145f723b4e2 /kernel | |
| parent | f8b6d1cc7dc15cf3de538b864eefaedad7a84d85 (diff) | |
| download | op-kernel-dev-8a6d42d1b32ad239c28f445138ea9c19aa52dd20.zip op-kernel-dev-8a6d42d1b32ad239c28f445138ea9c19aa52dd20.tar.gz | |
sched, nohz: Fix the idle cpu check in nohz_idle_balance
cpu bit in the nohz.idle_cpu_mask are reset in the first busy tick after
exiting idle. So during nohz_idle_balance(), intention is to double
check if the cpu that is part of the idle_cpu_mask is indeed idle before
going ahead in performing idle balance for that cpu.
Fix the cpu typo in the idle_cpu() check during nohz_idle_balance().
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/1323199177.1984.12.camel@sbsiddha-desk.sc.intel.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/sched/fair.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 4174338..8be45ed 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -5020,7 +5020,7 @@ static void nohz_idle_balance(int this_cpu, enum cpu_idle_type idle) goto end; for_each_cpu(balance_cpu, nohz.idle_cpus_mask) { - if (balance_cpu == this_cpu || !idle_cpu(this_cpu)) + if (balance_cpu == this_cpu || !idle_cpu(balance_cpu)) continue; /* |
