Messages in this thread Patch in this message | | | Date | Thu, 20 Aug 2009 15:41:04 +0200 | From | Andreas Herrmann <> | Subject | [PATCH 10/15] sched: Check for sched_mn_power_savings when doing load balancing |
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The patch adds support for POWERSAVINGS_BALANCE_BASIC for MN domain level. Currently POWERSAVINGS_BALANCE_WAKEUP is not used for MN domain.
(I have to admit that so far I don't have the correct understanding what's the benefit of POWERSAVINGS_BALANCE_WAKEUP (when an deticated wakeup CPU is used) in contrast to POWERSAVINGS_BALANCE_BASIC. I also have not found an example that would demonstrate the difference between those two powersaving levels.)
Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com> --- kernel/sched.c | 5 +++-- 1 files changed, 3 insertions(+), 2 deletions(-)
diff --git a/kernel/sched.c b/kernel/sched.c index ebcda58..7a0d710 100644 --- a/kernel/sched.c +++ b/kernel/sched.c @@ -4591,7 +4591,8 @@ static int find_new_ilb(int cpu) * Have idle load balancer selection from semi-idle packages only * when power-aware load balancing is enabled */ - if (!(sched_smt_power_savings || sched_mc_power_savings)) + if (!(sched_smt_power_savings || sched_mc_power_savings || + sched_mn_power_savings)) goto out_done; /* @@ -4681,7 +4682,7 @@ int select_nohz_load_balancer(int stop_tick) int new_ilb; if (!(sched_smt_power_savings || - sched_mc_power_savings)) + sched_mc_power_savings || sched_mn_power_savings)) return 1; /* * Check to see if there is a more power-efficient -- 1.6.0.4
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