From nobody Sun Oct 5 19:45:23 2025 Received: from mail-wm1-f44.google.com (mail-wm1-f44.google.com [209.85.128.44]) (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 F0D712C3244 for ; Thu, 31 Jul 2025 10:56:05 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.44 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753959368; cv=none; b=KDW+a/VCXRnWhmvdm74gtKEVwdA0mIyUf97J4S3xUacssUQWaLs1ZLDmlxkDiAVTCzcm/RaxHICnbyNeAiG32oDQLTiIrF8Oh75V564JInQncWIaVAQ58Kxdbig01SxzBWtxRl6gZ6Z4k/roo/+7Fvdfs0hws7myPjACq7gx+5k= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753959368; c=relaxed/simple; bh=4n9dDvibvFF2K8duQIxb/c28VkIW1FuNIozyqhLdMH0=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=GGdXHFO/sOZfyF+HNmN4hxYn6HVDjHgsDKj5ICgC5QcLyGDDKY4WJf6dVi3LfCyjGQCpMJs3mjpY2DvHpo7HTicXz210dwODDKSIds3Cu326ZSIH7F+AAqv0DIYyyM4zeUC0m+eoYAlzp2TtFTSlluvAWCKV2VlrAcI/LmPnOyY= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=UCu68OE6; arc=none smtp.client-ip=209.85.128.44 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com 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="UCu68OE6" Received: by mail-wm1-f44.google.com with SMTP id 5b1f17b1804b1-4563cfac19cso7808415e9.2 for ; Thu, 31 Jul 2025 03:56:05 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1753959364; x=1754564164; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=sIWR8F3615anV5iq4cLOiQAGxUyyEmR9Z0MfkybRjAQ=; b=UCu68OE6O1dtk/EcpkCLNBVwhVzGy3WYrXDQfEho/Bk/uZkrPqo5ndbtETyOvPt7Sp dcUqI0cvh6+7epZghgNti1XS0XYgCMbHQl09QRO8TlAG4bdSO0r30sIXrUxwNEp82fVh qpH1iboObM65Tm+rrAXEYBUk3CW3H+Zsb8SKbkeswZRPVPOvAtAC/si3MOokd4XFu68T 2/hjcngzVRCpwpmDzu4UKLyDEvMBVuRqX2obBF7ZS06L0CQ3H6YDSw4B+pKCoEF74tAw y/whcjjGQiqR8uqtqBNR+RfYYTJz070zgbwoLbp9eVSMrI5srMFCe1KcM3IwMxq2rm8R MXeg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1753959364; x=1754564164; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=sIWR8F3615anV5iq4cLOiQAGxUyyEmR9Z0MfkybRjAQ=; b=p/CyyucwBC22J7uQ6Iz3P04gHkKsyNh3BYqGcN1VdzH4OBxc3vM2CuAfRwk9Dco6Go jNxmfKR7FSTgB0OXFzY4OiDX+Jhn9ru7OEf0fkIEifqQ6WFfdyF7VfgXhOTTFyoiMhOX zd7IYoF7Yq59RC+07gDg6HcmMr/fZ7wk1hvW0gCDtUCghkvNCpM8VXFG0wR/Tf6rx4Bd b37RFqhTCkt8jeDDFSLXGQqex6hLxYpxAe6MRjO6V0XXqoSdkhslXJdogFs3ZV17EeL9 hB7Vc8LIwrNNyOtudnBvLRfsXnoHOg+NjhhieBcM3krTYbhUbxabko7rE6zi9+OE6PqX kfSA== X-Gm-Message-State: AOJu0YwKRJG+1vr1zQayR7A7KuYRap488jgMqdwZLna0bDtR4b9qpiqD XjiTj7ZyJ1wxOGan/J+LYgEudg+97BGff3+QjvLo8qXwmjsIrzV20PlQ X-Gm-Gg: ASbGncv76nzJAASj49qnWe3GG+QRPdqnuHExryygfEzFb/4fQjbMCIiGXj2y79laksV 2HPPqITIYnB75LCvysAKFxhbXJuRiLJrhT7UHEIgWP/tpI3c3iVwNGjvH8k1isBx6B14+mxqZbC AVcqLTjwFL7WJKEP8m2YlmZo2BnUGfm5GfV2WvqtKY5t8+gDposXU64cHeQfJntxda+Oo6UbsNE SoAsB1jQTRpJQIFZeea+LJndNxmWnxByw5V57GkRiNyfW09o25emWjiaYwePaFKUmx7e6v6fxIp vlbs4WJCOK3u5F7sePTi6SxtJrc9CEm3OOCMoxR7UWxdStRXO8/WbJRg+KJL/lI+ftjxKZy2PEo YI0Yo4VhDQZBoN+0m8zA= X-Google-Smtp-Source: AGHT+IGe9POE29jIFgrNmwcAbP7onYa5j4KecD1gmJUY2Z0ojhLUraXguYOR0AQ7z1kOaJ7MTk17Qw== X-Received: by 2002:a05:600c:1da2:b0:456:1ac8:cace with SMTP id 5b1f17b1804b1-45892b9e27emr79953285e9.12.1753959364156; Thu, 31 Jul 2025 03:56:04 -0700 (PDT) Received: from victus-lab ([193.205.81.5]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-3b79c4696c8sm1946025f8f.55.2025.07.31.03.56.03 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 31 Jul 2025 03:56:03 -0700 (PDT) From: Yuri Andriaccio To: Ingo Molnar , Peter Zijlstra , Juri Lelli , Vincent Guittot , Dietmar Eggemann , Steven Rostedt , Ben Segall , Mel Gorman , Valentin Schneider Cc: linux-kernel@vger.kernel.org, Luca Abeni , Yuri Andriaccio Subject: [RFC PATCH v2 25/25] sched/core: Execute enqueued balance callbacks when migrating task betweeen cgroups Date: Thu, 31 Jul 2025 12:55:43 +0200 Message-ID: <20250731105543.40832-26-yurand2000@gmail.com> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20250731105543.40832-1-yurand2000@gmail.com> References: <20250731105543.40832-1-yurand2000@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Execute balancing callbacks when migrating task between cgroups, since the = HCBS scheduler, similarly to the previous patch, may request balancing of thrott= led dl_servers to fully utilize the server's bandwidth. Signed-off-by: Yuri Andriaccio --- kernel/sched/core.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) diff --git a/kernel/sched/core.c b/kernel/sched/core.c index c8763c46030..65896f46e50 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -9247,10 +9247,11 @@ void sched_move_task(struct task_struct *tsk, bool = for_autogroup) { int queued, running, queue_flags =3D DEQUEUE_SAVE | DEQUEUE_MOVE | DEQUEUE_NOCLOCK; + struct balance_callback *head; struct rq *rq; + struct rq_flags rf; =20 - CLASS(task_rq_lock, rq_guard)(tsk); - rq =3D rq_guard.rq; + rq =3D task_rq_lock(tsk, &rf); =20 update_rq_clock(rq); =20 @@ -9277,6 +9278,12 @@ void sched_move_task(struct task_struct *tsk, bool f= or_autogroup) */ resched_curr(rq); } + + preempt_disable(); + head =3D splice_balance_callbacks(rq); + task_rq_unlock(rq, tsk, &rf); + balance_callbacks(rq, head); + preempt_enable(); } =20 static struct cgroup_subsys_state * --=20 2.50.1