From nobody Sun Feb 8 07:25:30 2026 Received: from mail-ej1-f50.google.com (mail-ej1-f50.google.com [209.85.218.50]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 06BE93839F for ; Mon, 4 Mar 2024 09:48:53 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.218.50 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709545735; cv=none; b=BE7D6Raad1ajVTJ8BK8ctO68xRaDEwkZFgtYZ2tGunM0o94mc3KOCW9OC9giKXyMSR7gRWP4BpiL2yFwzTZW8imTUDh95X0/R+TmDJFjEylRme3spgSpdlda8WcXgkrDJ5APWmT9kYwqzsAPCscMOQc+5iyh9xTT93c0QAHGfzA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709545735; c=relaxed/simple; bh=vdGrZwaI/Ookkfx04vBorgAmg1RU8pL6JYSXfdzQ9PY=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version:Content-Type; b=CDS5yVtvuUXj70p6fRLPx+vOElRCTcu1Cd4Htbx3M9cP2LXTSRtnUD2PPIIJbrFHUNmWw37TsObY/DuruxCpg75JiBEIrV0AmOLTvFYIWytrj2eY4g0+ANeA5xputcGG+hL9xZnA00GyeJ/pe80qJiIjoAzmsyJtfbU4m0WmVLM= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=gOL1eoRB; arc=none smtp.client-ip=209.85.218.50 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="gOL1eoRB" Received: by mail-ej1-f50.google.com with SMTP id a640c23a62f3a-a28a6cef709so689876766b.1 for ; Mon, 04 Mar 2024 01:48:53 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1709545732; x=1710150532; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:sender:from:to:cc:subject:date :message-id:reply-to; bh=eaJ13RYdVXWmZbDkVn4tVEtiI++AgEDK8GYib1p9JJ0=; b=gOL1eoRBVB2dUVJHDflLCwkLxEXuc0M+wNx0qTrFP5kx6eyHI66SOj9fw1D9AGknAR tKz/GKOmQuFpccgXUbRAsXQ7baqKpyOylLQXPmtz8hv1n/RKQGBhqv1mHdh1IZ42iIJX qHcS+nFyYAgViyI1v8hA/Pdqt0YKaIhu31VTbtf3FKuJGMows5bDTQAeagEa9OnoXYbn qyiaOaG3WrRP9fbqwHVSp7k5xC+RWJyA49o5VYKkFRsvwppD9WUZt5jGXoXU6BuGsAI2 695NDOPPOcNMzmLhj/lxpaaI2CCneQ95OhQSxRaomXpVcuscNrcX1BiatwbNM2bs29bf ZBZA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1709545732; x=1710150532; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:sender:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to; bh=eaJ13RYdVXWmZbDkVn4tVEtiI++AgEDK8GYib1p9JJ0=; b=htubOOkW/SxVu4cN+wHmcoItNWCj1+tow/1nEJ1XlVvz7KxpAkxgzACo6fiGKLpKrY 4SjygF63bDLuFN3Gh5UohZ6RFKU2LkmIB6K6e2dGvA0Ac5GTjH/k2dfFV/chNvDgGax3 MrH4R2qTOkaoEJif/HGboDCEhb/w/MwT7Po+lA8/QWdjrNFGz7vDnPDxeYHLRyyL3Ti5 v0B5PS4KGFUPzn7rtJS0loD+1f1eJZPkfbRfFN7AWYl7pWY6lgneYLtvuPqeNjX5AztU gNXTy3pwnzf0W+soS3hmI6IHXe14/ucK/iyBVyXJpB26GfCdKLFbMrdKuKdskiPYruYD xIrQ== X-Gm-Message-State: AOJu0YypeAy36Tg1dhtIrmcdxJvsaQ7hv1GBpSmvmrAg56HOmLRQs9ae L3wVsi1sKAfa6FXlt+XRPdktbE9KOyaBSAlIaft+zKSePEIYpoAVIsjEKeRLWFQ= X-Google-Smtp-Source: AGHT+IH6YqqEJKxD+XyOyFPhadLbYTSOXX1KeuXfpxyOUnOXhPuYTKnbKZYpveSWNXLdWl+VNgHj7w== X-Received: by 2002:a17:906:48c6:b0:a45:2038:4caa with SMTP id d6-20020a17090648c600b00a4520384caamr2023252ejt.76.1709545732374; Mon, 04 Mar 2024 01:48:52 -0800 (PST) Received: from kepler.redhat.com (1F2EF13F.nat.pool.telekom.hu. [31.46.241.63]) by smtp.gmail.com with ESMTPSA id s22-20020a170906501600b00a42e2bc82dbsm4569839ejj.169.2024.03.04.01.48.51 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 04 Mar 2024 01:48:51 -0800 (PST) Sender: Ingo Molnar From: Ingo Molnar To: linux-kernel@vger.kernel.org Cc: Shrikanth Hegde , Peter Zijlstra , Vincent Guittot , Dietmar Eggemann , Linus Torvalds , Valentin Schneider Subject: [PATCH 9/9] sched/balancing: Rename run_rebalance_domains() => sched_balance_softirq() Date: Mon, 4 Mar 2024 10:48:31 +0100 Message-Id: <20240304094831.3639338-10-mingo@kernel.org> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20240304094831.3639338-1-mingo@kernel.org> References: <20240304094831.3639338-1-mingo@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable run_rebalance_domains() is a misnomer, as it doesn't only run rebalance_domains(), but since the introduction of the NOHZ code it also runs nohz_idle_balance(). Rename it to sched_balance_softirq(), reflecting its more generic purpose and that it's a softirq handler. Signed-off-by: Ingo Molnar Cc: Peter Zijlstra Cc: Vincent Guittot Cc: Dietmar Eggemann Cc: Linus Torvalds Cc: Valentin Schneider Acked-by: Valentin Schneider --- Documentation/scheduler/sched-domains.rst | 2 +- Documentation/translations/zh_CN/scheduler/sched-domains.rst | 2 +- kernel/sched/fair.c | 6 +++--- 3 files changed, 5 insertions(+), 5 deletions(-) diff --git a/Documentation/scheduler/sched-domains.rst b/Documentation/sche= duler/sched-domains.rst index e57ad28301bd..6577b068f921 100644 --- a/Documentation/scheduler/sched-domains.rst +++ b/Documentation/scheduler/sched-domains.rst @@ -34,7 +34,7 @@ out of balance are tasks moved between groups. In kernel/sched/core.c, trigger_load_balance() is run periodically on each= CPU through scheduler_tick(). It raises a softirq after the next regularly sch= eduled rebalancing event for the current runqueue has arrived. The actual load -balancing workhorse, run_rebalance_domains()->rebalance_domains(), is then= run +balancing workhorse, sched_balance_softirq()->rebalance_domains(), is then= run in softirq context (SCHED_SOFTIRQ). =20 The latter function takes two arguments: the runqueue of current CPU and w= hether diff --git a/Documentation/translations/zh_CN/scheduler/sched-domains.rst b= /Documentation/translations/zh_CN/scheduler/sched-domains.rst index e814d4c01141..fbc326668e37 100644 --- a/Documentation/translations/zh_CN/scheduler/sched-domains.rst +++ b/Documentation/translations/zh_CN/scheduler/sched-domains.rst @@ -36,7 +36,7 @@ CPU=E5=85=B1=E4=BA=AB=E3=80=82=E4=BB=BB=E6=84=8F=E4=B8=A4= =E4=B8=AA=E7=BB=84=E7=9A=84CPU=E6=8E=A9=E7=A0=81=E7=9A=84=E4=BA=A4=E9=9B=86= =E4=B8=8D=E4=B8=80=E5=AE=9A=E4=B8=BA=E7=A9=BA=EF=BC=8C=E5=A6=82=E6=9E=9C=E6= =98=AF=E8=BF=99 =20 =E5=9C=A8kernel/sched/core.c=E4=B8=AD=EF=BC=8Ctrigger_load_balance()=E5=9C= =A8=E6=AF=8F=E4=B8=AACPU=E4=B8=8A=E9=80=9A=E8=BF=87scheduler_tick() =E5=91=A8=E6=9C=9F=E6=89=A7=E8=A1=8C=E3=80=82=E5=9C=A8=E5=BD=93=E5=89=8D= =E8=BF=90=E8=A1=8C=E9=98=9F=E5=88=97=E4=B8=8B=E4=B8=80=E4=B8=AA=E5=AE=9A=E6= =9C=9F=E8=B0=83=E5=BA=A6=E5=86=8D=E5=B9=B3=E8=A1=A1=E4=BA=8B=E4=BB=B6=E5=88= =B0=E8=BE=BE=E5=90=8E=EF=BC=8C=E5=AE=83=E5=BC=95=E5=8F=91=E4=B8=80=E4=B8=AA= =E8=BD=AF=E4=B8=AD=E6=96=AD=E3=80=82=E8=B4=9F=E8=BD=BD=E5=9D=87=E8=A1=A1=E7= =9C=9F=E6=AD=A3 -=E7=9A=84=E5=B7=A5=E4=BD=9C=E7=94=B1run_rebalance_domains()->rebalance_dom= ains()=E5=AE=8C=E6=88=90=EF=BC=8C=E5=9C=A8=E8=BD=AF=E4=B8=AD=E6=96=AD=E4=B8= =8A=E4=B8=8B=E6=96=87=E4=B8=AD=E6=89=A7=E8=A1=8C +=E7=9A=84=E5=B7=A5=E4=BD=9C=E7=94=B1sched_balance_softirq()->rebalance_dom= ains()=E5=AE=8C=E6=88=90=EF=BC=8C=E5=9C=A8=E8=BD=AF=E4=B8=AD=E6=96=AD=E4=B8= =8A=E4=B8=8B=E6=96=87=E4=B8=AD=E6=89=A7=E8=A1=8C =EF=BC=88SCHED_SOFTIRQ=EF=BC=89=E3=80=82 =20 =E5=90=8E=E4=B8=80=E4=B8=AA=E5=87=BD=E6=95=B0=E6=9C=89=E4=B8=A4=E4=B8=AA= =E5=85=A5=E5=8F=82=EF=BC=9A=E5=BD=93=E5=89=8DCPU=E7=9A=84=E8=BF=90=E8=A1=8C= =E9=98=9F=E5=88=97=E3=80=81=E5=AE=83=E5=9C=A8scheduler_tick()=E8=B0=83=E7= =94=A8=E6=97=B6=E6=98=AF=E5=90=A6=E7=A9=BA=E9=97=B2=E3=80=82=E5=87=BD=E6=95= =B0=E4=BC=9A=E4=BB=8E diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 0eb2cafa1509..cdf0dbb9d3e3 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -12408,7 +12408,7 @@ static int newidle_balance(struct rq *this_rq, stru= ct rq_flags *rf) } =20 /* - * The run_rebalance_domains() softirq handler is triggered via SCHED_SOFT= IRQ + * The sched_balance_softirq() softirq handler is triggered via SCHED_SOFT= IRQ * from two places: * * - the scheduler_tick(), @@ -12416,7 +12416,7 @@ static int newidle_balance(struct rq *this_rq, stru= ct rq_flags *rf) * - from the SMP cross-call function nohz_csd_func(), * used by NOHZ idle balancing (with NOHZ_BALANCE_KICK set). */ -static __latent_entropy void run_rebalance_domains(struct softirq_action *= h) +static __latent_entropy void sched_balance_softirq(struct softirq_action *= h) { struct rq *this_rq =3D this_rq(); enum cpu_idle_type idle =3D this_rq->idle_balance; @@ -13217,7 +13217,7 @@ __init void init_sched_fair_class(void) #endif } =20 - open_softirq(SCHED_SOFTIRQ, run_rebalance_domains); + open_softirq(SCHED_SOFTIRQ, sched_balance_softirq); =20 #ifdef CONFIG_NO_HZ_COMMON nohz.next_balance =3D jiffies; --=20 2.40.1