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=-2.9 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,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 D4DF0C43141 for ; Thu, 28 Jun 2018 15:46:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8D38627632 for ; Thu, 28 Jun 2018 15:46:07 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=linaro.org header.i=@linaro.org header.b="AeOeLXaO" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8D38627632 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linaro.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 S935474AbeF1PqG (ORCPT ); Thu, 28 Jun 2018 11:46:06 -0400 Received: from mail-wm0-f66.google.com ([74.125.82.66]:40739 "EHLO mail-wm0-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1030214AbeF1Pph (ORCPT ); Thu, 28 Jun 2018 11:45:37 -0400 Received: by mail-wm0-f66.google.com with SMTP id z13-v6so9590943wma.5 for ; Thu, 28 Jun 2018 08:45:37 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=D5Qny5qPkCUDDQBYNsLYT5W10m4bYLoJk8RUhx4horE=; b=AeOeLXaO0HkF+rsvuOrXrJbqXOHKiqi5FRP39VMPdR/9PGh+DLz3QaklmEWl59nMb5 bX8+O7tYJqwVyDzzxBSCi1OevO0lrp7r/mTSBSjGoXbq32mjSm1RavQNkwokRZ8pEYd3 2lAzCn9oVtH2s806qcXKtjPy5LzTI5R8hOCFM= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=D5Qny5qPkCUDDQBYNsLYT5W10m4bYLoJk8RUhx4horE=; b=sUNvprNl2Ib13Tz2llczbf0drup3o9CFsOVyG2V7TRUkCp3u/WJXw17vXBWLQSU8qj +p8aOc3aDSnOC8+hIrm8aqZP4WmfjVmc3CRs/qo2HPaaBUEBPZCLRnlCyOsHNKFP4X4T XW1qX6SVZWI/c/CFbUp0R1uo3/vPmnUzVlHCQJOuYmHbHrYrcI3uQrWkNWtv738iwG0y BLvPmLmszRYeI6xcCXEajdZNjreA03WuduzG+XnDc26kMYv4orsChvOJqtImYOu2YGRN jhS70nOqyvLKcCYSL6PyHvIz3YZp04gppT8fJLPPKOI8cOQIh0fZnoh5DMSfWmWjRGug mgsQ== X-Gm-Message-State: APt69E1T3QuOvy95KrvTmL0r+0x6uQ6x5MIqe/eoCawekxTnAce0iFbL 6CgluZ7fxxSJI5rbWlJ8Xl9ILw== X-Google-Smtp-Source: AAOMgpeSI5onOdrlzuCxLTaarBojCqjKAHTfvNOLM+gEI8gf0ZH257D9AMQuU2EsFy4qN453EUV8vw== X-Received: by 2002:a1c:5d0e:: with SMTP id r14-v6mr8384763wmb.152.1530200736285; Thu, 28 Jun 2018 08:45:36 -0700 (PDT) Received: from localhost.localdomain ([2a01:e0a:f:6020:21c3:ec41:bec9:c38]) by smtp.gmail.com with ESMTPSA id i4-v6sm6202115wrq.28.2018.06.28.08.45.34 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Thu, 28 Jun 2018 08:45:35 -0700 (PDT) From: Vincent Guittot To: peterz@infradead.org, mingo@kernel.org, linux-kernel@vger.kernel.org Cc: rjw@rjwysocki.net, juri.lelli@redhat.com, dietmar.eggemann@arm.com, Morten.Rasmussen@arm.com, viresh.kumar@linaro.org, valentin.schneider@arm.com, patrick.bellasi@arm.com, joel@joelfernandes.org, daniel.lezcano@linaro.org, quentin.perret@arm.com, luca.abeni@santannapisa.it, claudio@evidence.eu.com, Vincent Guittot , Ingo Molnar Subject: [PATCH 10/11] sched: remove rt_avg code Date: Thu, 28 Jun 2018 17:45:13 +0200 Message-Id: <1530200714-4504-11-git-send-email-vincent.guittot@linaro.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1530200714-4504-1-git-send-email-vincent.guittot@linaro.org> References: <1530200714-4504-1-git-send-email-vincent.guittot@linaro.org> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org rt_avg is no more used anywhere so we can remove all related code Cc: Ingo Molnar Cc: Peter Zijlstra Signed-off-by: Vincent Guittot --- kernel/sched/core.c | 26 -------------------------- kernel/sched/fair.c | 2 -- kernel/sched/sched.h | 17 ----------------- 3 files changed, 45 deletions(-) diff --git a/kernel/sched/core.c b/kernel/sched/core.c index e5263a4..e9aae7f 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -652,23 +652,6 @@ bool sched_can_stop_tick(struct rq *rq) return true; } #endif /* CONFIG_NO_HZ_FULL */ - -void sched_avg_update(struct rq *rq) -{ - s64 period = sched_avg_period(); - - while ((s64)(rq_clock(rq) - rq->age_stamp) > period) { - /* - * Inline assembly required to prevent the compiler - * optimising this loop into a divmod call. - * See __iter_div_u64_rem() for another example of this. - */ - asm("" : "+rm" (rq->age_stamp)); - rq->age_stamp += period; - rq->rt_avg /= 2; - } -} - #endif /* CONFIG_SMP */ #if defined(CONFIG_RT_GROUP_SCHED) || (defined(CONFIG_FAIR_GROUP_SCHED) && \ @@ -5719,13 +5702,6 @@ void set_rq_offline(struct rq *rq) } } -static void set_cpu_rq_start_time(unsigned int cpu) -{ - struct rq *rq = cpu_rq(cpu); - - rq->age_stamp = sched_clock_cpu(cpu); -} - /* * used to mark begin/end of suspend/resume: */ @@ -5843,7 +5819,6 @@ static void sched_rq_cpu_starting(unsigned int cpu) int sched_cpu_starting(unsigned int cpu) { - set_cpu_rq_start_time(cpu); sched_rq_cpu_starting(cpu); sched_tick_start(cpu); return 0; @@ -6111,7 +6086,6 @@ void __init sched_init(void) #ifdef CONFIG_SMP idle_thread_set_boot_cpu(); - set_cpu_rq_start_time(smp_processor_id()); #endif init_sched_fair_class(); diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index ce0dcbf..7ddb13a 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -5322,8 +5322,6 @@ static void cpu_load_update(struct rq *this_rq, unsigned long this_load, this_rq->cpu_load[i] = (old_load * (scale - 1) + new_load) >> i; } - - sched_avg_update(this_rq); } /* Used instead of source_load when we know the type == 0 */ diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h index 59a633d..c71ea81 100644 --- a/kernel/sched/sched.h +++ b/kernel/sched/sched.h @@ -846,8 +846,6 @@ struct rq { struct list_head cfs_tasks; - u64 rt_avg; - u64 age_stamp; struct sched_avg avg_rt; struct sched_avg avg_dl; #if defined(CONFIG_IRQ_TIME_ACCOUNTING) || defined(CONFIG_PARAVIRT_TIME_ACCOUNTING) @@ -1712,11 +1710,6 @@ extern const_debug unsigned int sysctl_sched_time_avg; extern const_debug unsigned int sysctl_sched_nr_migrate; extern const_debug unsigned int sysctl_sched_migration_cost; -static inline u64 sched_avg_period(void) -{ - return (u64)sysctl_sched_time_avg * NSEC_PER_MSEC / 2; -} - #ifdef CONFIG_SCHED_HRTICK /* @@ -1753,8 +1746,6 @@ unsigned long arch_scale_freq_capacity(int cpu) #endif #ifdef CONFIG_SMP -extern void sched_avg_update(struct rq *rq); - #ifndef arch_scale_cpu_capacity static __always_inline unsigned long arch_scale_cpu_capacity(struct sched_domain *sd, int cpu) @@ -1765,12 +1756,6 @@ unsigned long arch_scale_cpu_capacity(struct sched_domain *sd, int cpu) return SCHED_CAPACITY_SCALE; } #endif - -static inline void sched_rt_avg_update(struct rq *rq, u64 rt_delta) -{ - rq->rt_avg += rt_delta * arch_scale_freq_capacity(cpu_of(rq)); - sched_avg_update(rq); -} #else #ifndef arch_scale_cpu_capacity static __always_inline @@ -1779,8 +1764,6 @@ unsigned long arch_scale_cpu_capacity(void __always_unused *sd, int cpu) return SCHED_CAPACITY_SCALE; } #endif -static inline void sched_rt_avg_update(struct rq *rq, u64 rt_delta) { } -static inline void sched_avg_update(struct rq *rq) { } #endif struct rq *__task_rq_lock(struct task_struct *p, struct rq_flags *rf) -- 2.7.4