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| author | Joao Martins <joao.m.martins@oracle.com> | 2019-09-08 00:45:22 +0100 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2019-09-11 17:36:30 +0200 |
| commit | 7321440829a27d58c88b7fcfcbbc37487b5e39a5 (patch) | |
| tree | 72bdacfa727c89b79feca82868b45177d2b86361 /drivers/cpuidle/cpuidle-exynos.c | |
| parent | cb5d8c45ab6c3daf8269e550cfb2d5018a876fe3 (diff) | |
| download | linux-7321440829a27d58c88b7fcfcbbc37487b5e39a5.tar.bz2 | |
cpuidle-haltpoll: set haltpoll as preferred governor
Right now, guest current governors have the following ratings:
* ladder -> 10
* teo -> 19
* menu -> 20
* haltpoll -> 21
* ladder + nohz=off -> 25
haltpoll governor got introduced and it is now the default governor given
its highest rating -- with ladder+nohz being the exception -- regardless of
idle driver in the guest. An example of an undesirable case is x86 KVM
guests with MWAIT which have intel_idle registered first, and consequently
will have haltpoll be used as governor which would get limited to a poll
state and state 1 and the other states wouldn't get used.
To keep the previous defaults we decrease rating of governor to 9 (below
current lowest rating) and thus rely on @governor switch on
cpuidle_register_driver() to tie in haltpoll idle driver and governor
together.
Signed-off-by: Joao Martins <joao.m.martins@oracle.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/cpuidle/cpuidle-exynos.c')
0 files changed, 0 insertions, 0 deletions