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Subject[PATCH 10/15] sched: Check for sched_mn_power_savings when doing load balancing

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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