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authorRafael J. Wysocki <rafael.j.wysocki@intel.com>2017-09-04 01:05:22 +0300
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2017-09-04 01:05:22 +0300
commit08a10002bed151f6df201715adb80c1c5e7fe7ca (patch)
treea9d53ec2b6f5b1921a614f2d4bd70fb6c3a0d42f /drivers/cpufreq
parentbd87c8fb9d2e420e5ddffad0cd1abcadfca75dbd (diff)
parentc49cbc19b31e069cb344921c7286d7549767d10e (diff)
downloadlinux-08a10002bed151f6df201715adb80c1c5e7fe7ca.tar.xz
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.c1
-rw-r--r--drivers/cpufreq/cpufreq.c7
-rw-r--r--drivers/cpufreq/cpufreq_governor.c3
-rw-r--r--drivers/cpufreq/intel_pstate.c8
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) {