From patchwork Tue Feb 7 05:10:45 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ricardo Neri X-Patchwork-Id: 651629 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 3CBDDC636CD for ; Tue, 7 Feb 2023 05:02:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230223AbjBGFCS (ORCPT ); Tue, 7 Feb 2023 00:02:18 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60620 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230152AbjBGFBx (ORCPT ); Tue, 7 Feb 2023 00:01:53 -0500 Received: from mga05.intel.com (mga05.intel.com [192.55.52.43]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CAF374C0A; Mon, 6 Feb 2023 21:01:48 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1675746109; x=1707282109; h=from:to:cc:subject:date:message-id:in-reply-to: references; bh=iDkGE/mIiTsNfeFOnUGlfr0oeLSL2C0UHOku/Uu39Qo=; b=ep/FwozEgPY3+GMxNFBQI7DFYoIlSGA70lZmUH/CqwfRw4+z9+c6iLY0 qw3YJw+vjvQqbe8YZ3NucEpnWmJDcS3Q1osfUPoU4+75i7tKjzhgNcnxo y9VJWF+4v/zKyJOqHcO4PQnyEHZigA5nMwYUuE1pbuEx7l9fM4PMzGuBc ipo0hQ8/lbMeugQxE5DAoepBYKL2GCo+1Pjs6OaOaOUGgMLeS7wzaNPmo HiMbNsbxb9FtzqTP2T0MUfoEdnAMo0v8AhzCurAn7bhez6Cf0KAsoaZT6 05BFJy61P30OuxiJgsxtNWYgw38oyKW1EwLDPz7Ae9fh0RoL4ej2TXL2K A==; X-IronPort-AV: E=McAfee;i="6500,9779,10613"; a="415625771" X-IronPort-AV: E=Sophos;i="5.97,278,1669104000"; d="scan'208";a="415625771" Received: from fmsmga007.fm.intel.com ([10.253.24.52]) by fmsmga105.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Feb 2023 21:01:40 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6500,9779,10613"; a="668657699" X-IronPort-AV: E=Sophos;i="5.97,278,1669104000"; d="scan'208";a="668657699" Received: from ranerica-svr.sc.intel.com ([172.25.110.23]) by fmsmga007.fm.intel.com with ESMTP; 06 Feb 2023 21:01:40 -0800 From: Ricardo Neri To: "Peter Zijlstra (Intel)" , Juri Lelli , Vincent Guittot Cc: Ricardo Neri , "Ravi V. Shankar" , Ben Segall , Daniel Bristot de Oliveira , Dietmar Eggemann , Len Brown , Mel Gorman , "Rafael J. Wysocki" , Srinivas Pandruvada , Steven Rostedt , Tim Chen , Valentin Schneider , Lukasz Luba , Ionela Voinescu , x86@kernel.org, "Joel Fernandes (Google)" , linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, Ricardo Neri , "Tim C . Chen" Subject: [PATCH v3 04/24] sched/core: Add user_tick as argument to scheduler_tick() Date: Mon, 6 Feb 2023 21:10:45 -0800 Message-Id: <20230207051105.11575-5-ricardo.neri-calderon@linux.intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20230207051105.11575-1-ricardo.neri-calderon@linux.intel.com> References: <20230207051105.11575-1-ricardo.neri-calderon@linux.intel.com> Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org Differentiate between user and kernel ticks so that the scheduler updates the IPC class of the current task during the former. Cc: Ben Segall Cc: Daniel Bristot de Oliveira Cc: Dietmar Eggemann Cc: Ionela Voinescu Cc: Joel Fernandes (Google) Cc: Len Brown Cc: Lukasz Luba Cc: Mel Gorman Cc: Rafael J. Wysocki Cc: Srinivas Pandruvada Cc: Steven Rostedt Cc: Tim C. Chen Cc: Valentin Schneider Cc: x86@kernel.org Cc: linux-pm@vger.kernel.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Ricardo Neri --- Changes since v2: * Corrected error in the changeset description: the IPC class of the current task is updated at user tick. (Dietmar) Changes since v1: * None --- include/linux/sched.h | 2 +- kernel/sched/core.c | 2 +- kernel/time/timer.c | 2 +- 3 files changed, 3 insertions(+), 3 deletions(-) diff --git a/include/linux/sched.h b/include/linux/sched.h index 98f84f90a01d..10c6abdc3465 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -293,7 +293,7 @@ enum { TASK_COMM_LEN = 16, }; -extern void scheduler_tick(void); +extern void scheduler_tick(bool user_tick); #define MAX_SCHEDULE_TIMEOUT LONG_MAX diff --git a/kernel/sched/core.c b/kernel/sched/core.c index ed1549d28090..39d218a2f243 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -5555,7 +5555,7 @@ static inline u64 cpu_resched_latency(struct rq *rq) { return 0; } * This function gets called by the timer code, with HZ frequency. * We call it with interrupts disabled. */ -void scheduler_tick(void) +void scheduler_tick(bool user_tick) { int cpu = smp_processor_id(); struct rq *rq = cpu_rq(cpu); diff --git a/kernel/time/timer.c b/kernel/time/timer.c index 63a8ce7177dd..e15e24105891 100644 --- a/kernel/time/timer.c +++ b/kernel/time/timer.c @@ -2073,7 +2073,7 @@ void update_process_times(int user_tick) if (in_irq()) irq_work_tick(); #endif - scheduler_tick(); + scheduler_tick(user_tick); if (IS_ENABLED(CONFIG_POSIX_TIMERS)) run_posix_cpu_timers(); }