Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755227AbdGXLoU (ORCPT ); Mon, 24 Jul 2017 07:44:20 -0400 Received: from cloudserver094114.home.net.pl ([79.96.170.134]:59812 "EHLO cloudserver094114.home.net.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752513AbdGXLoN (ORCPT ); Mon, 24 Jul 2017 07:44:13 -0400 From: "Rafael J. Wysocki" To: Huaisheng HS1 Ye Cc: "srinivas.pandruvada@linux.intel.com" , "lenb@kernel.org" , "viresh.kumar@linaro.org" , "linux-pm@vger.kernel.org" , "linux-kernel@vger.kernel.org" Subject: Re: [PATCH] cpufreq: intel_pstate: Fix cpuinfo_cur_freq after performance governor changes Date: Mon, 24 Jul 2017 13:36:15 +0200 Message-ID: <7185077.O26hx51RqR@aspire.rjw.lan> User-Agent: KMail/4.14.10 (Linux/4.12.0-rc1+; KDE/4.14.9; x86_64; ; ) In-Reply-To: <1500875013-123321-1-git-send-email-yehs1@lenovo.com> References: <1500875013-123321-1-git-send-email-yehs1@lenovo.com> MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1202 Lines: 33 On Monday, July 24, 2017 05:43:14 AM Huaisheng HS1 Ye wrote: > After commit 82b4e03e01bc (intel_pstate: skip scheduler hook when > in "performance" mode) Software P-state control modes couldn't get > dynamic value during performance mode, Please explain what you mean here. I guess you carried out some tests and the results were not as expected, so what was the test? > and it still in last value from powersave mode, so clear its value to get > same behavior as Hardware P-state to avoid confusion. And please explain why it should be fixed the way you've done that. > Signed-off-by: Huaisheng Ye > --- > drivers/cpufreq/intel_pstate.c | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c > index 6cd5035..c675626 100644 > --- a/drivers/cpufreq/intel_pstate.c > +++ b/drivers/cpufreq/intel_pstate.c > @@ -2050,6 +2050,7 @@ static int intel_pstate_set_policy(struct cpufreq_policy *policy) > */ > intel_pstate_clear_update_util_hook(policy->cpu); > intel_pstate_max_within_limits(cpu); > + cpu->sample.core_avg_perf = 0; > } else { > intel_pstate_set_update_util_hook(policy->cpu); > } >