diff options
| author | Steve Muckle <smuckle@codeaurora.org> | 2014-07-22 14:10:15 -0700 |
|---|---|---|
| committer | David Keitel <dkeitel@codeaurora.org> | 2016-03-23 19:59:56 -0700 |
| commit | b32244628fe20dde5b5175dc4dbc6c562d09df77 (patch) | |
| tree | ed09445b119153a3a01eb5fcdbaf95f0c891aefe | |
| parent | f27b626521a14ebe9b9cfa692d59dcd72c1b4def (diff) | |
sched: enable hmp, power aware scheduling for targets with > 4 CPUs
Enabling and disabling hmp/power-aware scheduling is meant to be done
via kernel command line options. Until that is fully supported however,
take advantage of the fact that current targets with more than 4 CPUs
will need these features.
Change-Id: I4916805881d58eeb54747e4b972816ffc96caae7
Signed-off-by: Steve Muckle <smuckle@codeaurora.org>
Signed-off-by: Syed Rameez Mustafa <rameezmustafa@codeaurora.org>
| -rw-r--r-- | kernel/sched/core.c | 8 | ||||
| -rw-r--r-- | kernel/sched/fair.c | 4 |
2 files changed, 10 insertions, 2 deletions
diff --git a/kernel/sched/core.c b/kernel/sched/core.c index 98bd1a6dc02b..05f941f84343 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -8308,6 +8308,14 @@ void __init sched_init(void) int i, j; unsigned long alloc_size = 0, ptr; +#ifdef CONFIG_SCHED_HMP + if (num_possible_cpus() > 4) + sched_enable_hmp = sched_enable_power_aware = 1; + + if (sched_enable_hmp) + pr_info("HMP scheduling enabled.\n"); +#endif + BUG_ON(num_possible_cpus() > BITS_PER_LONG); #ifdef CONFIG_FAIR_GROUP_SCHED diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 69efaf68e7e2..14904696fc63 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -2564,7 +2564,7 @@ unsigned int max_task_load(void) #ifdef CONFIG_SCHED_HMP /* Use this knob to turn on or off HMP-aware task placement logic */ -unsigned int __read_mostly sched_enable_hmp = 1; +unsigned int __read_mostly sched_enable_hmp = 0; /* A cpu can no longer accomodate more tasks if: * @@ -2585,7 +2585,7 @@ unsigned int __read_mostly sysctl_sched_mostly_idle_nr_run = 3; * Control whether or not individual CPU power consumption is used to * guide task placement. */ -unsigned int __read_mostly sched_enable_power_aware = 1; +unsigned int __read_mostly sched_enable_power_aware = 0; /* * This specifies the maximum percent power difference between 2 |