42 lines
1.5 KiB
Diff
42 lines
1.5 KiB
Diff
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From ab5ee2928b75f12a2340afe6778a106886509b4c Mon Sep 17 00:00:00 2001
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From: Petr Holasek <pholasek@redhat.com>
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Date: Thu, 12 Jul 2012 14:54:16 +0200
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Subject: [PATCH 6/8] irqbalance: cpu powersave code disabled when
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power_thresh is not set
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When user doesn't set power_thresh argument no cpu can enter powersave
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mode. This patch should remove syslog clogging with pointless message
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about re-enabling all cpus for irq balancing.
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Signed-off-by: Petr Holasek <pholasek@redhat.com>
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Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
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---
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irqlist.c | 4 ++--
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1 file changed, 2 insertions(+), 2 deletions(-)
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diff --git a/irqlist.c b/irqlist.c
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index c29ee84..e03aa7b 100644
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--- a/irqlist.c
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+++ b/irqlist.c
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@@ -112,7 +112,7 @@ static void migrate_overloaded_irqs(struct topo_obj *obj, void *data)
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if (obj->load <= info->avg_load) {
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if ((obj->load + info->std_deviation) <= info->avg_load) {
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info->num_under++;
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- if (!info->powersave)
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+ if (power_thresh != ULONG_MAX && !info->powersave)
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if (!obj->powersave_mode)
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info->powersave = obj;
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} else
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@@ -172,7 +172,7 @@ void update_migration_status(void)
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{
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struct load_balance_info info;
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find_overloaded_objs(cpus, info);
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- if (cycle_count > 5) {
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+ if (power_thresh != ULONG_MAX && cycle_count > 5) {
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if (!info.num_over && (info.num_under >= power_thresh) && info.powersave) {
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syslog(LOG_INFO, "cpu %d entering powersave mode\n", info.powersave->number);
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info.powersave->powersave_mode = 1;
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--
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1.7.11.4
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