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=-9.7 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,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 84C72C43610 for ; Wed, 14 Nov 2018 02:46:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 4ACBC2243E for ; Wed, 14 Nov 2018 02:46:49 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="swO1L5x8" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 4ACBC2243E Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732561AbeKNMr5 (ORCPT ); Wed, 14 Nov 2018 07:47:57 -0500 Received: from mail.kernel.org ([198.145.29.99]:51892 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732434AbeKNMr4 (ORCPT ); Wed, 14 Nov 2018 07:47:56 -0500 Received: from lerouge.suse.de (lfbn-ncy-1-241-207.w83-194.abo.wanadoo.fr [83.194.85.207]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 5D8A8223C8; Wed, 14 Nov 2018 02:46:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1542163606; bh=UIskeL575IB0zZVubto9RfbirmyBj+E2P3OYbYBdiTg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=swO1L5x8HuwkLSzRAVlZUt3O6rGxRJAymRns7KVPyZOV7QUE3RpNIEHnRbUfSKM0q vN89M+itU1KtcUGA5kLWL9V1cYMot3YaOtDdGfwReH4zX+872Uj3DMiJSC9PxXjemP WAkLaLIIUcVoRQCHrnUIjaR6XNFcFhIbF2tGuBfY= From: Frederic Weisbecker To: LKML Cc: Frederic Weisbecker , Peter Zijlstra , Wanpeng Li , Thomas Gleixner , Yauheni Kaliuta , Ingo Molnar , Rik van Riel Subject: [PATCH 13/25] context_tracking: Introduce context_tracking_enabled_cpu() Date: Wed, 14 Nov 2018 03:45:57 +0100 Message-Id: <1542163569-20047-14-git-send-email-frederic@kernel.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1542163569-20047-1-git-send-email-frederic@kernel.org> References: <1542163569-20047-1-git-send-email-frederic@kernel.org> 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 08f125f..5877177 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 */ -- 2.7.4