From patchwork Tue May 19 06:25:22 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hanjun Guo X-Patchwork-Id: 11557003 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id C43F690 for ; Tue, 19 May 2020 06:32:26 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id AD88420829 for ; Tue, 19 May 2020 06:32:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726892AbgESGc0 (ORCPT ); Tue, 19 May 2020 02:32:26 -0400 Received: from szxga04-in.huawei.com ([45.249.212.190]:4862 "EHLO huawei.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726859AbgESGc0 (ORCPT ); Tue, 19 May 2020 02:32:26 -0400 Received: from DGGEMS401-HUB.china.huawei.com (unknown [172.30.72.58]) by Forcepoint Email with ESMTP id D0D56CB4DF82020F9F31; Tue, 19 May 2020 14:32:23 +0800 (CST) Received: from linux-ibm.site (10.175.102.37) by DGGEMS401-HUB.china.huawei.com (10.3.19.201) with Microsoft SMTP Server id 14.3.487.0; Tue, 19 May 2020 14:32:17 +0800 From: Hanjun Guo To: "Rafael J. Wysocki" , Daniel Lezcano , Doug Smythies CC: , Jonathan Corbet , Hanjun Guo Subject: [PATCH 3/6] cpuidle: Make cpuidle governor switchable to be the default behaviour Date: Tue, 19 May 2020 14:25:22 +0800 Message-ID: <1589869525-29893-4-git-send-email-guohanjun@huawei.com> X-Mailer: git-send-email 1.7.12.4 In-Reply-To: <1589869525-29893-1-git-send-email-guohanjun@huawei.com> References: <1589869525-29893-1-git-send-email-guohanjun@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.175.102.37] X-CFilter-Loop: Reflected Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org For now cpuidle governor can be switched via sysfs only when the boot option "cpuidle_sysfs_switch" is passed, but it's important to switch the governor to adapt to different workloads, especially after TEO and haltpoll governor were introduced. Add available_governors and current_governor into the default attributes, but reserve the current_governor_ro for compatiblity. Signed-off-by: Hanjun Guo Reviewed-by: Doug Smythies Tested-by: Doug Smythies Acked-by: Daniel Lezcano --- drivers/cpuidle/sysfs.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/drivers/cpuidle/sysfs.c b/drivers/cpuidle/sysfs.c index a57ad10..b51c470d 100644 --- a/drivers/cpuidle/sysfs.c +++ b/drivers/cpuidle/sysfs.c @@ -106,19 +106,20 @@ static ssize_t store_current_governor(struct device *dev, return ret ? ret : count; } +static DEVICE_ATTR(available_governors, 0444, show_available_governors, NULL); static DEVICE_ATTR(current_driver, 0444, show_current_driver, NULL); +static DEVICE_ATTR(current_governor, 0644, show_current_governor, + store_current_governor); static DEVICE_ATTR(current_governor_ro, 0444, show_current_governor, NULL); static struct attribute *cpuidle_default_attrs[] = { + &dev_attr_available_governors.attr, &dev_attr_current_driver.attr, + &dev_attr_current_governor.attr, &dev_attr_current_governor_ro.attr, NULL }; -static DEVICE_ATTR(available_governors, 0444, show_available_governors, NULL); -static DEVICE_ATTR(current_governor, 0644, show_current_governor, - store_current_governor); - static struct attribute *cpuidle_switch_attrs[] = { &dev_attr_available_governors.attr, &dev_attr_current_driver.attr,