Messages in this thread | | | From | "Rafael J. Wysocki" <> | Subject | Re: [RFC 8/9] intel_pstate: ignore scheduler cpufreq callbacks on remote CPUs | Date | Thu, 30 Mar 2017 00:15:33 +0200 |
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On Thursday, March 09, 2017 05:15:18 PM Viresh Kumar wrote: > From: Steve Muckle <smuckle.linux@gmail.com> > > In preparation for the scheduler cpufreq callback happening on remote > CPUs, check for this case in intel_pstate which currently requires the > callback run on the local CPU. Such callbacks are ignored for now. > > Signed-off-by: Steve Muckle <smuckle.linux@gmail.com> > Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> > --- > drivers/cpufreq/intel_pstate.c | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c > index 3d37219a0dd7..bd60f1cd7ea6 100644 > --- a/drivers/cpufreq/intel_pstate.c > +++ b/drivers/cpufreq/intel_pstate.c > @@ -1930,6 +1930,9 @@ 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; > > + if (smp_processor_id() != data->cpu) > + return; > + > if (pstate_funcs.get_target_pstate == get_target_pstate_use_cpu_load) { > if (flags & SCHED_CPUFREQ_IOWAIT) { > cpu->iowait_boost = int_tofp(1); >
This would need to be updated on top of some intel_pstate changes in the queue.
Thanks, Rafael
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