From: Ionela Voinescu <ionela.voinescu@arm.com> To: Sudeep Holla <sudeep.holla@arm.com> Cc: Dietmar Eggemann <dietmar.eggemann@arm.com>, Viresh Kumar <viresh.kumar@linaro.org>, rjw@rjwysocki.net, catalin.marinas@arm.com, will@kernel.org, linux@armlinux.org.uk, mingo@redhat.com, peterz@infradead.org, linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2 3/7] arch_topology: disable frequency invariance for CONFIG_BL_SWITCHER Date: Mon, 3 Aug 2020 15:39:44 +0100 [thread overview] Message-ID: <20200803143944.GA20312@arm.com> (raw) In-Reply-To: <20200731154838.GB14529@bogus> Hi guys, On Friday 31 Jul 2020 at 16:48:38 (+0100), Sudeep Holla wrote: > On Thu, Jul 30, 2020 at 12:29:52PM +0200, Dietmar Eggemann wrote: > > [...] > > > > > Are there still any users of CONFIG_BL_SWITCHER? I guess it's only > > limited to A15/A7 systems w/ vexpress-spc-cpufreq.c ... so probably only > > TC2? > > I think so as no one shouted when I merged bL switcher driver into > vexpress-spc-cpufreq.c > I think a good indication is also the fact that frequency invariance was broken for a long time for bL_switcher_enabled systems and nobody shouted. A way to make this nicer is to fully remove BL_SWITCHER support. This support was valuable at its time, but given that now there is proper asymmetric CPU capacity support, is there any reason to hold on to this? Thanks, Ionela. > -- > Regards, > Sudeep
WARNING: multiple messages have this Message-ID (diff)
From: Ionela Voinescu <ionela.voinescu@arm.com> To: Sudeep Holla <sudeep.holla@arm.com> Cc: linux-pm@vger.kernel.org, peterz@infradead.org, Viresh Kumar <viresh.kumar@linaro.org>, rjw@rjwysocki.net, linux@armlinux.org.uk, linux-kernel@vger.kernel.org, mingo@redhat.com, catalin.marinas@arm.com, will@kernel.org, Dietmar Eggemann <dietmar.eggemann@arm.com>, linux-arm-kernel@lists.infradead.org Subject: Re: [PATCH v2 3/7] arch_topology: disable frequency invariance for CONFIG_BL_SWITCHER Date: Mon, 3 Aug 2020 15:39:44 +0100 [thread overview] Message-ID: <20200803143944.GA20312@arm.com> (raw) In-Reply-To: <20200731154838.GB14529@bogus> Hi guys, On Friday 31 Jul 2020 at 16:48:38 (+0100), Sudeep Holla wrote: > On Thu, Jul 30, 2020 at 12:29:52PM +0200, Dietmar Eggemann wrote: > > [...] > > > > > Are there still any users of CONFIG_BL_SWITCHER? I guess it's only > > limited to A15/A7 systems w/ vexpress-spc-cpufreq.c ... so probably only > > TC2? > > I think so as no one shouted when I merged bL switcher driver into > vexpress-spc-cpufreq.c > I think a good indication is also the fact that frequency invariance was broken for a long time for bL_switcher_enabled systems and nobody shouted. A way to make this nicer is to fully remove BL_SWITCHER support. This support was valuable at its time, but given that now there is proper asymmetric CPU capacity support, is there any reason to hold on to this? Thanks, Ionela. > -- > Regards, > Sudeep _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2020-08-03 14:39 UTC|newest] Thread overview: 70+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-07-22 9:37 [PATCH v2 0/7] cpufreq: improve frequency invariance support Ionela Voinescu 2020-07-22 9:37 ` Ionela Voinescu 2020-07-22 9:37 ` [PATCH v2 1/7] cpufreq: move invariance setter calls in cpufreq core Ionela Voinescu 2020-07-22 9:37 ` Ionela Voinescu 2020-07-27 13:48 ` Rafael J. Wysocki 2020-07-27 13:48 ` Rafael J. Wysocki 2020-07-29 9:03 ` Ionela Voinescu 2020-07-29 9:03 ` Ionela Voinescu 2020-07-30 3:41 ` Viresh Kumar 2020-07-30 3:41 ` Viresh Kumar 2020-08-03 13:26 ` Ionela Voinescu 2020-08-03 13:26 ` Ionela Voinescu 2020-08-03 13:46 ` Rafael J. Wysocki 2020-08-03 13:46 ` Rafael J. Wysocki 2020-08-03 14:16 ` Ionela Voinescu 2020-08-03 14:16 ` Ionela Voinescu 2020-07-22 9:37 ` [PATCH v2 2/7] cpufreq: set invariance scale factor on transition end Ionela Voinescu 2020-07-22 9:37 ` Ionela Voinescu 2020-07-27 13:52 ` Rafael J. Wysocki 2020-07-27 13:52 ` Rafael J. Wysocki 2020-07-29 9:14 ` Ionela Voinescu 2020-07-29 9:14 ` Ionela Voinescu 2020-07-30 4:13 ` Viresh Kumar 2020-07-30 4:13 ` Viresh Kumar 2020-08-03 13:58 ` Ionela Voinescu 2020-08-03 13:58 ` Ionela Voinescu 2020-08-04 6:26 ` Viresh Kumar 2020-08-04 6:26 ` Viresh Kumar 2020-08-05 10:35 ` Ionela Voinescu 2020-08-05 10:35 ` Ionela Voinescu 2020-07-22 9:37 ` [PATCH v2 3/7] arch_topology: disable frequency invariance for CONFIG_BL_SWITCHER Ionela Voinescu 2020-07-22 9:37 ` Ionela Voinescu 2020-07-30 4:24 ` Viresh Kumar 2020-07-30 4:24 ` Viresh Kumar 2020-07-30 10:29 ` Dietmar Eggemann 2020-07-30 10:29 ` Dietmar Eggemann 2020-07-31 15:48 ` Sudeep Holla 2020-07-31 15:48 ` Sudeep Holla 2020-08-03 14:39 ` Ionela Voinescu [this message] 2020-08-03 14:39 ` Ionela Voinescu 2020-08-04 6:30 ` Viresh Kumar 2020-08-04 6:30 ` Viresh Kumar 2020-08-10 9:01 ` Ionela Voinescu 2020-08-10 9:01 ` Ionela Voinescu 2020-07-22 9:37 ` [PATCH v2 4/7] cpufreq: report whether cpufreq supports Frequency Invariance (FI) Ionela Voinescu 2020-07-22 9:37 ` Ionela Voinescu 2020-07-27 14:02 ` Rafael J. Wysocki 2020-07-27 14:02 ` Rafael J. Wysocki 2020-07-29 14:39 ` Ionela Voinescu 2020-07-29 14:39 ` Ionela Voinescu 2020-07-30 4:43 ` Viresh Kumar 2020-07-30 4:43 ` Viresh Kumar 2020-08-03 15:24 ` Ionela Voinescu 2020-08-03 15:24 ` Ionela Voinescu 2020-08-04 6:46 ` Viresh Kumar 2020-08-04 6:46 ` Viresh Kumar 2020-08-05 10:35 ` Ionela Voinescu 2020-08-05 10:35 ` Ionela Voinescu 2020-07-22 9:37 ` [PATCH v2 5/7] arch_topology,cpufreq,sched/core: constify arch_* cpumasks Ionela Voinescu 2020-07-22 9:37 ` [PATCH v2 5/7] arch_topology, cpufreq, sched/core: " Ionela Voinescu 2020-07-30 11:43 ` [PATCH v2 5/7] arch_topology,cpufreq,sched/core: " Catalin Marinas 2020-07-30 11:43 ` [PATCH v2 5/7] arch_topology, cpufreq, sched/core: " Catalin Marinas 2020-07-22 9:37 ` [PATCH v2 6/7] arch_topology,arm,arm64: define arch_scale_freq_invariant() Ionela Voinescu 2020-07-22 9:37 ` [PATCH v2 6/7] arch_topology, arm, arm64: " Ionela Voinescu 2020-07-30 11:44 ` [PATCH v2 6/7] arch_topology,arm,arm64: " Catalin Marinas 2020-07-30 11:44 ` Catalin Marinas 2020-07-22 9:37 ` [PATCH v2 7/7] cpufreq: make schedutil the default for arm and arm64 Ionela Voinescu 2020-07-22 9:37 ` Ionela Voinescu 2020-07-30 4:54 ` Viresh Kumar 2020-07-30 4:54 ` Viresh Kumar
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