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[71.255.246.27]) by smtp.gmail.com with ESMTPSA id a62sm14859102qkb.134.2020.04.16.06.40.14 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 16 Apr 2020 06:40:14 -0700 (PDT) Subject: Re: [Patch v10 0/9] Introduce Thermal Pressure To: Paul Gortmaker Cc: Ingo Molnar , Peter Zijlstra , ionela.voinescu@arm.com, vincent.guittot@linaro.org, dietmar.eggemann@arm.com, rui.zhang@intel.com, qperret@google.com, daniel.lezcano@linaro.org, viresh.kumar@linaro.org, rostedt@goodmis.org, will@kernel.org, catalin.marinas@arm.com, sudeep.holla@arm.com, juri.lelli@redhat.com, Jonathan Corbet , LKML , amit.kachhap@gmail.com, javi.merino@kernel.org, amit.kucheria@verdurent.com References: <20200222005213.3873-1-thara.gopinath@linaro.org> From: Thara Gopinath Message-ID: <51cdde9e-f124-8e19-693c-4accc6f2e948@linaro.org> Date: Thu, 16 Apr 2020 09:40:13 -0400 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.4.1 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 4/14/20 11:57 AM, Paul Gortmaker wrote: > On Fri, Feb 21, 2020 at 7:52 PM Thara Gopinath > wrote: > >> Thermal governors can respond to an overheat event of a cpu by >> capping the cpu's maximum possible frequency. This in turn >> means that the maximum available compute capacity of the >> cpu is restricted. But today in the kernel, task scheduler is >> not notified of capping of maximum frequency of a cpu. >> In other words, scheduler is unaware of maximum capacity >> restrictions placed on a cpu due to thermal activity. >> This patch series attempts to address this issue. >> > > I'm just seeing this now via -rc1 and "make oldconfig". > > I'd suggest taking some of the above info and using it to > create a Kconfig help text for the new option that was added. Hi Paul, I will send a patch adding some details to the Kconfig text. -- Warm Regards Thara