* [RESEND PATCH V3] PM / EM: Micro optimization in em_cpu_energy [not found] <671427cc-2abb-68eb-5e54-0851785efa84@intel.com> @ 2020-11-28 1:39 ` Pavankumar Kondeti 2020-12-08 17:24 ` Rafael J. Wysocki 0 siblings, 1 reply; 2+ messages in thread From: Pavankumar Kondeti @ 2020-11-28 1:39 UTC (permalink / raw) To: linux-kernel Cc: linux-pm, Dietmar Eggemann, Pavankumar Kondeti, Lukasz Luba, Rafael J. Wysocki, Daniel Lezcano, Quentin Perret, Gustavo A. R. Silva When the sum of the utilization of CPUs in a power domain is zero, return the energy as 0 without doing any computations. Acked-by: Quentin Perret <qperret@google.com> Reviewed-by: Dietmar Eggemann <dietmar.eggemann@arm.com> Signed-off-by: Pavankumar Kondeti <pkondeti@codeaurora.org> --- include/linux/energy_model.h | 3 +++ 1 file changed, 3 insertions(+) diff --git a/include/linux/energy_model.h b/include/linux/energy_model.h index b67a51c..8810f1f 100644 --- a/include/linux/energy_model.h +++ b/include/linux/energy_model.h @@ -103,6 +103,9 @@ static inline unsigned long em_cpu_energy(struct em_perf_domain *pd, struct em_perf_state *ps; int i, cpu; + if (!sum_util) + return 0; + /* * In order to predict the performance state, map the utilization of * the most utilized CPU of the performance domain to a requested -- Qualcomm India Private Limited, on behalf of Qualcomm Innovation Center, Inc. Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux Foundation Collaborative Project. ^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [RESEND PATCH V3] PM / EM: Micro optimization in em_cpu_energy 2020-11-28 1:39 ` [RESEND PATCH V3] PM / EM: Micro optimization in em_cpu_energy Pavankumar Kondeti @ 2020-12-08 17:24 ` Rafael J. Wysocki 0 siblings, 0 replies; 2+ messages in thread From: Rafael J. Wysocki @ 2020-12-08 17:24 UTC (permalink / raw) To: Pavankumar Kondeti Cc: Linux Kernel Mailing List, Linux PM, Dietmar Eggemann, Lukasz Luba, Rafael J. Wysocki, Daniel Lezcano, Quentin Perret, Gustavo A. R. Silva On Sat, Nov 28, 2020 at 3:21 AM Pavankumar Kondeti <pkondeti@codeaurora.org> wrote: > > When the sum of the utilization of CPUs in a power domain is zero, > return the energy as 0 without doing any computations. > > Acked-by: Quentin Perret <qperret@google.com> > Reviewed-by: Dietmar Eggemann <dietmar.eggemann@arm.com> > Signed-off-by: Pavankumar Kondeti <pkondeti@codeaurora.org> > --- > include/linux/energy_model.h | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/include/linux/energy_model.h b/include/linux/energy_model.h > index b67a51c..8810f1f 100644 > --- a/include/linux/energy_model.h > +++ b/include/linux/energy_model.h > @@ -103,6 +103,9 @@ static inline unsigned long em_cpu_energy(struct em_perf_domain *pd, > struct em_perf_state *ps; > int i, cpu; > > + if (!sum_util) > + return 0; > + > /* > * In order to predict the performance state, map the utilization of > * the most utilized CPU of the performance domain to a requested > -- Applied as 5.11 material, thanks! ^ permalink raw reply [flat|nested] 2+ messages in thread
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[not found] <671427cc-2abb-68eb-5e54-0851785efa84@intel.com>
2020-11-28 1:39 ` [RESEND PATCH V3] PM / EM: Micro optimization in em_cpu_energy Pavankumar Kondeti
2020-12-08 17:24 ` Rafael J. Wysocki
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