From patchwork Fri Mar 4 07:53:28 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: lirongqing X-Patchwork-Id: 12768704 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1C2B1C433F5 for ; Fri, 4 Mar 2022 08:09:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230027AbiCDIK2 (ORCPT ); Fri, 4 Mar 2022 03:10:28 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41418 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229572AbiCDIK1 (ORCPT ); Fri, 4 Mar 2022 03:10:27 -0500 X-Greylist: delayed 567 seconds by postgrey-1.37 at lindbergh.monkeyblade.net; Fri, 04 Mar 2022 00:09:39 PST Received: from bddwd-sys-mailin03.bddwd.baidu.com (mx411.baidu.com [124.64.200.154]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id A702AE0AC1 for ; Fri, 4 Mar 2022 00:09:39 -0800 (PST) Received: from bjhw-sys-rpm015653cc5.bjhw.baidu.com (bjhw-sys-rpm015653cc5.bjhw.baidu.com [10.227.53.39]) by bddwd-sys-mailin03.bddwd.baidu.com (Postfix) with ESMTP id 09C3D13D0004A; Fri, 4 Mar 2022 15:53:29 +0800 (CST) Received: from localhost (localhost [127.0.0.1]) by bjhw-sys-rpm015653cc5.bjhw.baidu.com (Postfix) with ESMTP id F0099D9932; Fri, 4 Mar 2022 15:53:28 +0800 (CST) From: Li RongQing To: rafael@kernel.org, daniel.lezcano@linaro.org, linux-pm@vger.kernel.org Subject: [PATCH] cpuidle-haltpoll: move cpuidle_poll_state_init after Date: Fri, 4 Mar 2022 15:53:28 +0800 Message-Id: <1646380408-57184-1-git-send-email-lirongqing@baidu.com> X-Mailer: git-send-email 1.7.1 Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org call cpuidle_poll_state_init only if it is needed to save some cpu cycles Signed-off-by: Li RongQing --- drivers/cpuidle/cpuidle-haltpoll.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/cpuidle/cpuidle-haltpoll.c b/drivers/cpuidle/cpuidle-haltpoll.c index fcc5321..3a39a7f 100644 --- a/drivers/cpuidle/cpuidle-haltpoll.c +++ b/drivers/cpuidle/cpuidle-haltpoll.c @@ -108,11 +108,11 @@ static int __init haltpoll_init(void) if (boot_option_idle_override != IDLE_NO_OVERRIDE) return -ENODEV; - cpuidle_poll_state_init(drv); - if (!kvm_para_available() || !haltpoll_want()) return -ENODEV; + cpuidle_poll_state_init(drv); + ret = cpuidle_register_driver(drv); if (ret < 0) return ret;