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Wed, 17 Feb 2021 23:23:49 -0800 (PST) Date: Thu, 18 Feb 2021 12:53:46 +0530 From: Viresh Kumar To: Ionela Voinescu Subject: Re: [PATCH V3 1/2] topology: Allow multiple entities to provide sched_freq_tick() callback Message-ID: <20210218072346.5lvymba35ezuz2do@vireshk-i7> References: <20210203114521.GA6380@arm.com> <20210205091424.3od3tme3f7mh7ebp@vireshk-i7> <20210217002422.GA17422@arm.com> <20210217042558.o4anjdkayzgqny55@vireshk-i7> <20210217113011.GA22176@arm.com> <20210217114027.ashqh67hrfk4hwib@vireshk-i7> <20210217115726.GA25441@arm.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20210217115726.GA25441@arm.com> User-Agent: NeoMutt/20180716-391-311a52 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210218_022353_644410_C3BB7FDF X-CRM114-Status: GOOD ( 13.26 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Vincent Guittot , linux-pm@vger.kernel.org, Catalin Marinas , Rafael Wysocki , linux-kernel@vger.kernel.org, Greg Kroah-Hartman , Sudeep Holla , Will Deacon , linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 17-02-21, 11:57, Ionela Voinescu wrote: > See a very useful comment someone added recently :) : > > """ > + /* > + * We don't need to handle CPUFREQ_REMOVE_POLICY event as the AMU > + * counters don't have any dependency on cpufreq driver once we have > + * initialized AMU support and enabled invariance. The AMU counters will > + * keep on working just fine in the absence of the cpufreq driver, and > + * for the CPUs for which there are no counters available, the last set > + * value of freq_scale will remain valid as that is the frequency those > + * CPUs are running at. > + */ > """ Lol... -- viresh _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel