From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 96E2320B19 for ; Wed, 25 Oct 2023 11:54:12 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="X/M+QWAi" Received: from desiato.infradead.org (desiato.infradead.org [IPv6:2001:8b0:10b:1:d65d:64ff:fe57:4e05]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C698512A; Wed, 25 Oct 2023 04:54:09 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=desiato.20200630; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=Iw+hAI2RZyKf3pkny9wI5k8uvYF1PKP6s1iFZu6PRHc=; b=X/M+QWAi63DcW2qYREzSvndZwt 7X/GeKDC8gewFlEre7f8MPiHWzeV5zv0CdaZCAebgzUIbA8eplVsZ0IzgTNUe2Y2/CYgrCJKgvKfh yul1Lx8JtKZwmk0bzufa6faCwQJ6nZb8kg6kdcf4cx45FHJ5JcaA6V7bwMnd4Z1SSaGgRbwmT5mGc zZyhiIAv3k99+T1uE1JqCkX6I20Pga7G/rX+pIW76zuCiOPsEHyR7CnBK/cvRRCzvptNwSU1GXd6Q 1qyuRg9+8ce32XB5Ht4ddRMmc+rvKQ7UkFGGMyp8cniRP6wklfpbEO7pD2cIsmwJf/tnACOgsauPi 9KX6P0nQ==; Received: from j130084.upc-j.chello.nl ([24.132.130.84] helo=noisy.programming.kicks-ass.net) by desiato.infradead.org with esmtpsa (Exim 4.96 #2 (Red Hat Linux)) id 1qvcRw-00GJda-1u; Wed, 25 Oct 2023 11:53:24 +0000 Received: by noisy.programming.kicks-ass.net (Postfix, from userid 1000) id 4192C30047C; Wed, 25 Oct 2023 13:53:24 +0200 (CEST) Date: Wed, 25 Oct 2023 13:53:24 +0200 From: Peter Zijlstra To: Vincent Guittot Cc: linux@armlinux.org.uk, catalin.marinas@arm.com, will@kernel.org, paul.walmsley@sifive.com, palmer@dabbelt.com, aou@eecs.berkeley.edu, sudeep.holla@arm.com, gregkh@linuxfoundation.org, rafael@kernel.org, mingo@redhat.com, juri.lelli@redhat.com, dietmar.eggemann@arm.com, rostedt@goodmis.org, bsegall@google.com, mgorman@suse.de, bristot@redhat.com, vschneid@redhat.com, viresh.kumar@linaro.org, lenb@kernel.org, robert.moore@intel.com, lukasz.luba@arm.com, ionela.voinescu@arm.com, pierre.gondois@arm.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, linux-pm@vger.kernel.org, linux-acpi@vger.kernel.org, acpica-devel@lists.linuxfoundation.org, conor.dooley@microchip.com, suagrfillet@gmail.com, ajones@ventanamicro.com, lftan@kernel.org Subject: Re: [PATCH v3 3/6] cpufreq/schedutil: use a fixed reference frequency Message-ID: <20231025115324.GC31201@noisy.programming.kicks-ass.net> References: <20231018162540.667646-1-vincent.guittot@linaro.org> <20231018162540.667646-4-vincent.guittot@linaro.org> Precedence: bulk X-Mailing-List: linux-acpi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20231018162540.667646-4-vincent.guittot@linaro.org> On Wed, Oct 18, 2023 at 06:25:37PM +0200, Vincent Guittot wrote: > +static __always_inline > +unsigned long get_capacity_ref_freq(struct cpufreq_policy *policy) > +{ > + unsigned int freq = arch_scale_freq_ref(policy->cpu); > + > + if (freq) > + return freq; > + > + if (arch_scale_freq_invariant()) > + return policy->cpuinfo.max_freq; > + > + return policy->cur; > +} Hmm, what should x86 do here? I know it mostly doesn't use these things, but would it make sense to stick the base frequency in ?