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| author | Viresh Kumar <viresh.kumar@linaro.org> | 2017-07-28 12:16:39 +0530 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2017-08-01 14:24:54 +0200 |
| commit | 99d14d0e16fadb4de001bacc0ac0786a9ebecf2a (patch) | |
| tree | f09808829ea602773845903f05ca6699b5fb16c6 /drivers/cpufreq/cpufreq-dt.c | |
| parent | 674e75411fc260b0d4532701228cfe12fc090da8 (diff) | |
| download | lwn-99d14d0e16fadb4de001bacc0ac0786a9ebecf2a.tar.gz lwn-99d14d0e16fadb4de001bacc0ac0786a9ebecf2a.zip | |
cpufreq: Process remote callbacks from any CPU if the platform permits
On many platforms, CPUs can do DVFS across cpufreq policies. i.e CPU
from policy-A can change frequency of CPUs belonging to policy-B.
This is quite common in case of ARM platforms where we don't
configure any per-cpu register.
Add a flag to identify such platforms and update
cpufreq_can_do_remote_dvfs() to allow remote callbacks if this flag is
set.
Also enable the flag for cpufreq-dt driver which is used only on ARM
platforms currently.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Saravana Kannan <skannan@codeaurora.org>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/cpufreq/cpufreq-dt.c')
| -rw-r--r-- | drivers/cpufreq/cpufreq-dt.c | 1 |
1 files changed, 1 insertions, 0 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; |