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| author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2017-09-04 00:05:22 +0200 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2017-09-04 00:05:22 +0200 |
| commit | 08a10002bed151f6df201715adb80c1c5e7fe7ca (patch) | |
| tree | a9d53ec2b6f5b1921a614f2d4bd70fb6c3a0d42f /drivers/cpufreq | |
| parent | bd87c8fb9d2e420e5ddffad0cd1abcadfca75dbd (diff) | |
| parent | c49cbc19b31e069cb344921c7286d7549767d10e (diff) | |
| download | linux-stable-08a10002bed151f6df201715adb80c1c5e7fe7ca.tar.gz linux-stable-08a10002bed151f6df201715adb80c1c5e7fe7ca.tar.bz2 linux-stable-08a10002bed151f6df201715adb80c1c5e7fe7ca.zip | |
Merge branch 'pm-cpufreq-sched'
* pm-cpufreq-sched:
cpufreq: schedutil: Always process remote callback with slow switching
cpufreq: schedutil: Don't restrict kthread to related_cpus unnecessarily
cpufreq: Return 0 from ->fast_switch() on errors
cpufreq: Simplify cpufreq_can_do_remote_dvfs()
cpufreq: Process remote callbacks from any CPU if the platform permits
sched: cpufreq: Allow remote cpufreq callbacks
cpufreq: schedutil: Use unsigned int for iowait boost
cpufreq: schedutil: Make iowait boost more energy efficient
Diffstat (limited to 'drivers/cpufreq')
| -rw-r--r-- | drivers/cpufreq/cpufreq-dt.c | 1 | ||||
| -rw-r--r-- | drivers/cpufreq/cpufreq.c | 7 | ||||
| -rw-r--r-- | drivers/cpufreq/cpufreq_governor.c | 3 | ||||
| -rw-r--r-- | drivers/cpufreq/intel_pstate.c | 8 |
4 files changed, 16 insertions, 3 deletions
diff --git a/drivers/cpufreq/cpufreq-dt.c b/drivers/cpufreq/cpufreq-dt.c index fef3c2160691..d83ab94d041a 100644 --- a/drivers/cpufreq/cpufreq-dt.c +++ b/drivers/cpufreq/cpufreq-dt.c @@ -274,6 +274,7 @@ static int cpufreq_init(struct cpufreq_policy *policy) transition_latency = CPUFREQ_ETERNAL; policy->cpuinfo.transition_latency = transition_latency; + policy->dvfs_possible_from_any_cpu = true; return 0; diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index c7ae67d6886d..ea43b147a7fe 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -1843,9 +1843,10 @@ EXPORT_SYMBOL(cpufreq_unregister_notifier); * twice in parallel for the same policy and that it will never be called in * parallel with either ->target() or ->target_index() for the same policy. * - * If CPUFREQ_ENTRY_INVALID is returned by the driver's ->fast_switch() - * callback to indicate an error condition, the hardware configuration must be - * preserved. + * Returns the actual frequency set for the CPU. + * + * If 0 is returned by the driver's ->fast_switch() callback to indicate an + * error condition, the hardware configuration must be preserved. */ unsigned int cpufreq_driver_fast_switch(struct cpufreq_policy *policy, unsigned int target_freq) diff --git a/drivers/cpufreq/cpufreq_governor.c b/drivers/cpufreq/cpufreq_governor.c index eed069ecfd5e..58d4f4e1ad6a 100644 --- a/drivers/cpufreq/cpufreq_governor.c +++ b/drivers/cpufreq/cpufreq_governor.c @@ -272,6 +272,9 @@ static void dbs_update_util_handler(struct update_util_data *data, u64 time, struct policy_dbs_info *policy_dbs = cdbs->policy_dbs; u64 delta_ns, lst; + if (!cpufreq_can_do_remote_dvfs(policy_dbs->policy)) + return; + /* * The work may not be allowed to be queued up right now. * Possible reasons: diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c index 04dd5f46803d..0c50637e6bda 100644 --- a/drivers/cpufreq/intel_pstate.c +++ b/drivers/cpufreq/intel_pstate.c @@ -1746,6 +1746,10 @@ static void intel_pstate_update_util_pid(struct update_util_data *data, struct cpudata *cpu = container_of(data, struct cpudata, update_util); u64 delta_ns = time - cpu->sample.time; + /* Don't allow remote callbacks */ + if (smp_processor_id() != cpu->cpu) + return; + if ((s64)delta_ns < pid_params.sample_rate_ns) return; @@ -1763,6 +1767,10 @@ static void intel_pstate_update_util(struct update_util_data *data, u64 time, struct cpudata *cpu = container_of(data, struct cpudata, update_util); u64 delta_ns; + /* Don't allow remote callbacks */ + if (smp_processor_id() != cpu->cpu) + return; + if (flags & SCHED_CPUFREQ_IOWAIT) { cpu->iowait_boost = int_tofp(1); } else if (cpu->iowait_boost) { |