diff options
| author | Joel Fernandes <joelaf@google.com> | 2017-05-18 22:41:33 -0700 |
|---|---|---|
| committer | Georg Veichtlbauer <georg@vware.at> | 2023-07-16 13:05:36 +0200 |
| commit | 9539942cb065e9ec5749a89077b12fc3a0c51b0a (patch) | |
| tree | 72868433ee4628a619218037aae2673b8f3fb1d8 | |
| parent | b65c91c9aa14ce6e8d61d488878c0dc734508a76 (diff) | |
FROMLIST: cpufreq: Make iowait boost a policy option
Make iowait boost a cpufreq policy option and enable it for intel_pstate
cpufreq driver. Governors like schedutil can use it to determine if
boosting for tasks that wake up with p->in_iowait set is needed.
Bug: 38010527
Link: https://lkml.org/lkml/2017/5/19/43
Change-Id: Icf59e75fbe731dc67abb28fb837f7bb0cd5ec6cc
Signed-off-by: Joel Fernandes <joelaf@google.com>
| -rw-r--r-- | drivers/cpufreq/intel_pstate.c | 1 | ||||
| -rw-r--r-- | include/linux/cpufreq.h | 3 |
2 files changed, 4 insertions, 0 deletions
diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c index 15fcf2cac971..53226f33ea98 100644 --- a/drivers/cpufreq/intel_pstate.c +++ b/drivers/cpufreq/intel_pstate.c @@ -1187,6 +1187,7 @@ static int intel_pstate_cpu_init(struct cpufreq_policy *policy) policy->min = cpu->pstate.min_pstate * cpu->pstate.scaling; policy->max = cpu->pstate.turbo_pstate * cpu->pstate.scaling; + policy->iowait_boost_enable = true; /* cpuinfo and default policy values */ policy->cpuinfo.min_freq = cpu->pstate.min_pstate * cpu->pstate.scaling; diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h index 9302d016b89f..8e9d08dfbd18 100644 --- a/include/linux/cpufreq.h +++ b/include/linux/cpufreq.h @@ -123,6 +123,9 @@ struct cpufreq_policy { unsigned int up_transition_delay_us; unsigned int down_transition_delay_us; + /* Boost switch for tasks with p->in_iowait set */ + bool iowait_boost_enable; + /* Cached frequency lookup from cpufreq_driver_resolve_freq. */ unsigned int cached_target_freq; int cached_resolved_idx; |