sched: skip updating rq's next_balance under null SD

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Was playing with sched_smt_power_savings/sched_mc_power_savings and
found out that while the scheduler domains are reconstructed when sysfs
settings change, rebalance_domains() can get triggered with null domain
on other cpus, which is setting next_balance to jiffies + 60*HZ.
Resulting in no idle/busy balancing for 60 seconds.

Fix this.

Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

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Suresh Siddha 2007-08-23 15:18:02 +02:00 • committed by Ingo Molnar

parent f8700df7c4

commit f549da848e

1 changed files with 12 additions and 2 deletions

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kernel/sched.c

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