From nobody Mon Feb 9 06:34:54 2026 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 66236C77B73 for ; Wed, 31 May 2023 12:49:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232623AbjEaMtV (ORCPT ); Wed, 31 May 2023 08:49:21 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45384 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235962AbjEaMs7 (ORCPT ); Wed, 31 May 2023 08:48:59 -0400 Received: from desiato.infradead.org (desiato.infradead.org [IPv6:2001:8b0:10b:1:d65d:64ff:fe57:4e05]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8EC56E41 for ; Wed, 31 May 2023 05:48:22 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=desiato.20200630; h=Content-Type:MIME-Version:References: Subject:Cc:To:From:Date:Message-ID:Sender:Reply-To:Content-Transfer-Encoding: Content-ID:Content-Description:In-Reply-To; bh=u3VdHODagUcuhecPEM096ZQQiQ+UGylL9VNtBc1yvAs=; b=Q+A/Qhlx4B3kLfqcrDZlOjwFq8 O8gkyzEhIEd8ORhr2Whn3Fqe4UY0syT85g2dKRIViHBw88XiFbqawPJVzdMibqupkUe4hpxh1eO/U V17hEgz+zzQ0k8jwq9ZVkPlJojvW2BJeDamjRirFA5w1aKZ8dhFBHkTFWIpXbqE5o+okMFeSDRxL5 NWdYCxzQb/Evx26YWpLjZBW+RcktcrrF1HzzUlfCClL/F6qFr3vHPh+OlRkh4iOJ0C8vjBS+oKmm/ A5cXmyWJu6TTReOhv4b9zNsjLbYa/j0MPra8o4rxAhQLxRwvsCCJx3WtuBn39IPJhHzJ0DFm/erGS KZh5P6pQ==; Received: from j130084.upc-j.chello.nl ([24.132.130.84] helo=noisy.programming.kicks-ass.net) by desiato.infradead.org with esmtpsa (Exim 4.96 #2 (Red Hat Linux)) id 1q4LEp-00FSLD-2z; Wed, 31 May 2023 12:47:40 +0000 Received: from hirez.programming.kicks-ass.net (hirez.programming.kicks-ass.net [192.168.1.225]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits)) (Client did not present a certificate) by noisy.programming.kicks-ass.net (Postfix) with ESMTPS id 838AC300C0E; Wed, 31 May 2023 14:47:37 +0200 (CEST) Received: by hirez.programming.kicks-ass.net (Postfix, from userid 0) id 0AF2B22BA645A; Wed, 31 May 2023 14:47:34 +0200 (CEST) Message-ID: <20230531124604.205287511@infradead.org> User-Agent: quilt/0.66 Date: Wed, 31 May 2023 13:58:48 +0200 From: Peter Zijlstra To: mingo@kernel.org, vincent.guittot@linaro.org Cc: linux-kernel@vger.kernel.org, peterz@infradead.org, juri.lelli@redhat.com, dietmar.eggemann@arm.com, rostedt@goodmis.org, bsegall@google.com, mgorman@suse.de, bristot@redhat.com, corbet@lwn.net, qyousef@layalina.io, chris.hyser@oracle.com, patrick.bellasi@matbug.net, pjt@google.com, pavel@ucw.cz, qperret@google.com, tim.c.chen@linux.intel.com, joshdon@google.com, timj@gnu.org, kprateek.nayak@amd.com, yu.c.chen@intel.com, youssefesmat@chromium.org, joel@joelfernandes.org, efault@gmx.de, tglx@linutronix.de Subject: [PATCH 09/15] sched/debug: Rename min_granularity to base_slice References: <20230531115839.089944915@infradead.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" EEVDF uses this tunable as the base request/slice -- make sure the name reflects this. Signed-off-by: Peter Zijlstra (Intel) --- kernel/sched/core.c | 2 +- kernel/sched/debug.c | 4 ++-- kernel/sched/fair.c | 12 ++++++------ kernel/sched/sched.h | 2 +- 4 files changed, 10 insertions(+), 10 deletions(-) --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -4464,7 +4464,7 @@ static void __sched_fork(unsigned long c p->se.nr_migrations =3D 0; p->se.vruntime =3D 0; p->se.vlag =3D 0; - p->se.slice =3D sysctl_sched_min_granularity; + p->se.slice =3D sysctl_sched_base_slice; INIT_LIST_HEAD(&p->se.group_node); =20 #ifdef CONFIG_FAIR_GROUP_SCHED --- a/kernel/sched/debug.c +++ b/kernel/sched/debug.c @@ -347,7 +347,7 @@ static __init int sched_init_debug(void) debugfs_create_file("preempt", 0644, debugfs_sched, NULL, &sched_dynamic_= fops); #endif =20 - debugfs_create_u32("min_granularity_ns", 0644, debugfs_sched, &sysctl_sch= ed_min_granularity); + debugfs_create_u32("base_slice_ns", 0644, debugfs_sched, &sysctl_sched_ba= se_slice); =20 debugfs_create_u32("latency_warn_ms", 0644, debugfs_sched, &sysctl_resche= d_latency_warn_ms); debugfs_create_u32("latency_warn_once", 0644, debugfs_sched, &sysctl_resc= hed_latency_warn_once); @@ -862,7 +862,7 @@ static void sched_debug_header(struct se SEQ_printf(m, " .%-40s: %Ld\n", #x, (long long)(x)) #define PN(x) \ SEQ_printf(m, " .%-40s: %Ld.%06ld\n", #x, SPLIT_NS(x)) - PN(sysctl_sched_min_granularity); + PN(sysctl_sched_base_slice); P(sysctl_sched_child_runs_first); P(sysctl_sched_features); #undef PN --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -75,8 +75,8 @@ unsigned int sysctl_sched_tunable_scalin * * (default: 0.75 msec * (1 + ilog(ncpus)), units: nanoseconds) */ -unsigned int sysctl_sched_min_granularity =3D 750000ULL; -static unsigned int normalized_sysctl_sched_min_granularity =3D 750000ULL; +unsigned int sysctl_sched_base_slice =3D 750000ULL; +static unsigned int normalized_sysctl_sched_base_slice =3D 750000ULL; =20 /* * After fork, child runs first. If set to 0 (default) then @@ -237,7 +237,7 @@ static void update_sysctl(void) =20 #define SET_SYSCTL(name) \ (sysctl_##name =3D (factor) * normalized_sysctl_##name) - SET_SYSCTL(sched_min_granularity); + SET_SYSCTL(sched_base_slice); #undef SET_SYSCTL } =20 @@ -943,7 +943,7 @@ int sched_update_scaling(void) =20 #define WRT_SYSCTL(name) \ (normalized_sysctl_##name =3D sysctl_##name / (factor)) - WRT_SYSCTL(sched_min_granularity); + WRT_SYSCTL(sched_base_slice); #undef WRT_SYSCTL =20 return 0; @@ -964,9 +964,9 @@ static void update_deadline(struct cfs_r /* * For EEVDF the virtual time slope is determined by w_i (iow. * nice) while the request time r_i is determined by - * sysctl_sched_min_granularity. + * sysctl_sched_base_slice. */ - se->slice =3D sysctl_sched_min_granularity; + se->slice =3D sysctl_sched_base_slice; =20 /* * EEVDF: vd_i =3D ve_i + r_i / w_i --- a/kernel/sched/sched.h +++ b/kernel/sched/sched.h @@ -2479,7 +2479,7 @@ extern void check_preempt_curr(struct rq extern const_debug unsigned int sysctl_sched_nr_migrate; extern const_debug unsigned int sysctl_sched_migration_cost; =20 -extern unsigned int sysctl_sched_min_granularity; +extern unsigned int sysctl_sched_base_slice; =20 #ifdef CONFIG_SCHED_DEBUG extern int sysctl_resched_latency_warn_ms;