From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7B89CECE59D for ; Wed, 16 Oct 2019 02:57:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 4615621928 for ; Wed, 16 Oct 2019 02:57:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1571194653; bh=t6jIUJsBeTYu2KA0dJ2OvkGQN6ViePg9iPPoYtSusZA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=w7wvOupWxYnmtPQ0RhLb7Bvv/yswN3Wi1Q9f71EHROLrx06K1Gv3ZBNQJIJ02/727 XtAzGqDOL8L42Eilu5Hy3uJCcoCjgIPjo+c4sksidG1TZMVXhs4hN+Lk0upcZhi2l0 xm3D4uE6C9Qo3+3Vlsdy1ozRMLkF8C/srafdlGs0= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2390744AbfJPC5b (ORCPT ); Tue, 15 Oct 2019 22:57:31 -0400 Received: from mail.kernel.org ([198.145.29.99]:53172 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2388896AbfJPC51 (ORCPT ); Tue, 15 Oct 2019 22:57:27 -0400 Received: from lenoir.home (lfbn-ncy-1-150-155.w83-194.abo.wanadoo.fr [83.194.232.155]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id CA11721D71; Wed, 16 Oct 2019 02:57:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1571194647; bh=t6jIUJsBeTYu2KA0dJ2OvkGQN6ViePg9iPPoYtSusZA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=2a+loF5gybKCBef8w1Z/FRK+YloggKRUrFEnc657lwNfJTv2EDtzAJLhRGzdKaiCI dBoJK/0pxqnuKotAEMPUbsdWNSMabOtmJH0pcES4//P0ycCWJPbavjcQ1vDbPyN2A6 h8JyOs5v56/XPaD+nS1HmpwmHub7Av6Xh2SE1WS0= From: Frederic Weisbecker To: LKML Cc: Frederic Weisbecker , Jacek Anaszewski , Peter Zijlstra , Wanpeng Li , "Rafael J . Wysocki" , Rik van Riel , Thomas Gleixner , Yauheni Kaliuta , Ingo Molnar , Viresh Kumar , Pavel Machek Subject: [PATCH 07/14] context_tracking: Introduce context_tracking_enabled_cpu() Date: Wed, 16 Oct 2019 04:56:53 +0200 Message-Id: <20191016025700.31277-8-frederic@kernel.org> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20191016025700.31277-1-frederic@kernel.org> References: <20191016025700.31277-1-frederic@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This allows us to check if a remote CPU runs context tracking (ie: is nohz_full). We'll need that to reliably support "nice" accounting on kcpustat. Signed-off-by: Frederic Weisbecker Cc: Yauheni Kaliuta Cc: Thomas Gleixner Cc: Rik van Riel Cc: Peter Zijlstra Cc: Wanpeng Li Cc: Ingo Molnar --- include/linux/context_tracking_state.h | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/include/linux/context_tracking_state.h b/include/linux/context_tracking_state.h index 08f125f6b31b..587717705727 100644 --- a/include/linux/context_tracking_state.h +++ b/include/linux/context_tracking_state.h @@ -31,6 +31,11 @@ static inline bool context_tracking_enabled(void) return static_branch_unlikely(&context_tracking_key); } +static inline bool context_tracking_enabled_cpu(int cpu) +{ + return per_cpu(context_tracking.active, cpu); +} + static inline bool context_tracking_enabled_this_cpu(void) { return __this_cpu_read(context_tracking.active); @@ -43,6 +48,7 @@ static inline bool context_tracking_in_user(void) #else static inline bool context_tracking_in_user(void) { return false; } static inline bool context_tracking_enabled(void) { return false; } +static inline bool context_tracking_enabled_cpu(int cpu) { return false; } static inline bool context_tracking_enabled_this_cpu(void) { return false; } #endif /* CONFIG_CONTEXT_TRACKING */ -- 2.23.0