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irqbalance: cpu powersave code disabled when power_thresh is not set

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When user doesn't set power_thresh argument no cpu can enter powersave
mode. This patch should remove syslog clogging with pointless message
about re-enabling all cpus for irq balancing.

Signed-off-by: Petr Holasek <pholasek@redhat.com>
Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
This commit is contained in:
Petr Holasek 2012-07-12 14:54:16 +02:00 committed by Neil Horman
parent 544bc8443d
commit 4e7df9d0b5
1 changed files with 2 additions and 2 deletions
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4
irqlist.c
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@ -117,7 +117,7 @@ static void migrate_overloaded_irqs(struct topo_obj *obj, void *data)
if (obj->load <= info->avg_load) {
if ((obj->load + info->std_deviation) <= info->avg_load) {
info->num_under++;
if (!info->powersave)
if (power_thresh != ULONG_MAX && !info->powersave)
if (!obj->powersave_mode)
info->powersave = obj;
} else
@ -177,7 +177,7 @@ void update_migration_status(void)
{
struct load_balance_info info;
find_overloaded_objs(cpus, info);
if (cycle_count > 5) {
if (power_thresh != ULONG_MAX && cycle_count > 5) {
if (!info.num_over && (info.num_under >= power_thresh) && info.powersave) {
syslog(LOG_INFO, "cpu %d entering powersave mode\n", info.powersave->number);
info.powersave->powersave_mode = 1;