From patchwork Tue Jun 5 21:42:41 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: srinivas pandruvada X-Patchwork-Id: 10449293 X-Patchwork-Delegate: rjw@sisk.pl Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 74C9A60467 for ; Tue, 5 Jun 2018 21:43:54 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 685D429BFC for ; Tue, 5 Jun 2018 21:43:54 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 58F8529C07; Tue, 5 Jun 2018 21:43:54 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00, MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id DCEB429BFC for ; Tue, 5 Jun 2018 21:43:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752365AbeFEVnl (ORCPT ); Tue, 5 Jun 2018 17:43:41 -0400 Received: from mga04.intel.com ([192.55.52.120]:37414 "EHLO mga04.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752358AbeFEVmv (ORCPT ); Tue, 5 Jun 2018 17:42:51 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga008.jf.intel.com ([10.7.209.65]) by fmsmga104.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 05 Jun 2018 14:42:50 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.49,479,1520924400"; d="scan'208";a="47023742" Received: from spandruv-desk.jf.intel.com ([10.54.75.31]) by orsmga008.jf.intel.com with ESMTP; 05 Jun 2018 14:42:49 -0700 From: Srinivas Pandruvada To: lenb@kernel.org, rjw@rjwysocki.net, mgorman@techsingularity.net Cc: peterz@infradead.org, linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, juri.lelli@redhat.com, viresh.kumar@linaro.org, ggherdovich@suse.cz, Srinivas Pandruvada Subject: [PATCH 3/4] cpufreq: intel_pstate: New sysfs entry to control HWP boost Date: Tue, 5 Jun 2018 14:42:41 -0700 Message-Id: <20180605214242.62156-4-srinivas.pandruvada@linux.intel.com> X-Mailer: git-send-email 2.13.6 In-Reply-To: <20180605214242.62156-1-srinivas.pandruvada@linux.intel.com> References: <20180605214242.62156-1-srinivas.pandruvada@linux.intel.com> Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP A new attribute is added to intel_pstate sysfs to enable/disable HWP dynamic performance boost. Reported-by: Mel Gorman Tested-by: Giovanni Gherdovich Signed-off-by: Srinivas Pandruvada --- drivers/cpufreq/intel_pstate.c | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c index 5b2b6b6d1ff4..70bf63bb4e0e 100644 --- a/drivers/cpufreq/intel_pstate.c +++ b/drivers/cpufreq/intel_pstate.c @@ -1033,6 +1033,30 @@ static ssize_t store_min_perf_pct(struct kobject *a, struct attribute *b, return count; } +static ssize_t show_hwp_dynamic_boost(struct kobject *kobj, + struct attribute *attr, char *buf) +{ + return sprintf(buf, "%u\n", hwp_boost); +} + +static ssize_t store_hwp_dynamic_boost(struct kobject *a, struct attribute *b, + const char *buf, size_t count) +{ + unsigned int input; + int ret; + + ret = kstrtouint(buf, 10, &input); + if (ret) + return ret; + + mutex_lock(&intel_pstate_driver_lock); + hwp_boost = !!input; + intel_pstate_update_policies(); + mutex_unlock(&intel_pstate_driver_lock); + + return count; +} + show_one(max_perf_pct, max_perf_pct); show_one(min_perf_pct, min_perf_pct); @@ -1042,6 +1066,7 @@ define_one_global_rw(max_perf_pct); define_one_global_rw(min_perf_pct); define_one_global_ro(turbo_pct); define_one_global_ro(num_pstates); +define_one_global_rw(hwp_dynamic_boost); static struct attribute *intel_pstate_attributes[] = { &status.attr, @@ -1082,6 +1107,11 @@ static void __init intel_pstate_sysfs_expose_params(void) rc = sysfs_create_file(intel_pstate_kobject, &min_perf_pct.attr); WARN_ON(rc); + if (hwp_active) { + rc = sysfs_create_file(intel_pstate_kobject, + &hwp_dynamic_boost.attr); + WARN_ON(rc); + } } /************************** sysfs end ************************/