From nobody Mon Apr 6 10:45:04 2026 Received: from canpmsgout02.his.huawei.com (canpmsgout02.his.huawei.com [113.46.200.217]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 506A230EF84 for ; Fri, 20 Mar 2026 06:20:16 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=113.46.200.217 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773987620; cv=none; b=S5nYifz0TxKmiofKuHnvQCf+20HiGadseFnmoRkRqUVFgnDUaOHU9n8CpHisf2JK3PFv3fZ8sBtUjdWbt6fNr1OxHgu+RyAKavYlV1ZxNotzJmJIYEoWtREXfsLOQ+J+4jUrQpoY4nWfLG0PIYDqi8K+FLDrdCW30dwSxEz7Clw= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773987620; c=relaxed/simple; bh=4Ao9uxhatKL6nxPUk3LjswGsM2+rrzXm1OH5HDuJuVA=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=cZqc4+pTO7eBiFXSuuQQWiPrhiMl5yj/QrLfbAal4zk8SsPKp26gin9U4NqCBokbWxYzLMseNoyE2HWF6Vdc6nhdA7NpwzcnwGCBzGznu2jJ2qIDoS+DXuE6iZDDOO19wTbbHo9LZ4CqSox8PwxcUWKZdTe9T20zmHT9JdiaDRk= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com; spf=pass smtp.mailfrom=huawei.com; dkim=pass (1024-bit key) header.d=huawei.com header.i=@huawei.com header.b=33tW+4XJ; arc=none smtp.client-ip=113.46.200.217 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=huawei.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=huawei.com header.i=@huawei.com header.b="33tW+4XJ" dkim-signature: v=1; a=rsa-sha256; d=huawei.com; s=dkim; c=relaxed/relaxed; q=dns/txt; h=From; bh=BA8yrgdHA88zwosFEbYCEE+BImhnhVcLGKzx4RYalb0=; b=33tW+4XJ1Ls1WOca5LV3EyTAlEurFgTzYJ3hUVjF6Yu4TW/aDAG5akf8B3oOnC7q8PFwGE8Re O/VCsReLCRZtQSBP0C9X8nGtwfZc6NGXRl5PG9eTKUdS1XAnCm4CbapsOxmWSlBKW0ypyovZw4i Ya0594RGtAvKJNegLvRWbAM= Received: from mail.maildlp.com (unknown [172.19.162.140]) by canpmsgout02.his.huawei.com (SkyGuard) with ESMTPS id 4fcXMp1Pn1zcZyn; Fri, 20 Mar 2026 14:14:30 +0800 (CST) Received: from kwepemr500016.china.huawei.com (unknown [7.202.195.68]) by mail.maildlp.com (Postfix) with ESMTPS id AA8D92012A; Fri, 20 Mar 2026 14:20:12 +0800 (CST) Received: from huawei.com (10.67.174.242) by kwepemr500016.china.huawei.com (7.202.195.68) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.11; Fri, 20 Mar 2026 14:20:11 +0800 From: Chen Jinghuang To: , , , , CC: , , , , , , , Subject: [RFC PATCH v5 6/9] sched/fair: Generalize the detach_task interface Date: Fri, 20 Mar 2026 05:59:17 +0000 Message-ID: <20260320055920.2518389-7-chenjinghuang2@huawei.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20260320055920.2518389-1-chenjinghuang2@huawei.com> References: <20260320055920.2518389-1-chenjinghuang2@huawei.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 X-ClientProxiedBy: kwepems500001.china.huawei.com (7.221.188.70) To kwepemr500016.china.huawei.com (7.202.195.68) Content-Type: text/plain; charset="utf-8" From: Steve Sistare The detach_task function takes a struct lb_env argument, but only needs a few of its members. Pass the rq and cpu arguments explicitly so the function may be called from code that is not based on lb_env. No functional change. Signed-off-by: Steve Sistare Signed-off-by: Chen Jinghuang --- kernel/sched/fair.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 742462d41118..ebb13108dabe 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -9602,6 +9602,17 @@ static void detach_task(struct task_struct *p, struc= t lb_env *env) set_task_cpu(p, env->dst_cpu); } =20 +/* + * detach_task_steal() -- detach the task for the migration from @src_rq t= o @dst_cpu. + */ +static void detach_task_steal(struct task_struct *p, struct rq *src_rq, in= t dst_cpu) +{ + lockdep_assert_rq_held(src_rq); + + deactivate_task(src_rq, p, DEQUEUE_NOCLOCK); + set_task_cpu(p, dst_cpu); +} + /* * detach_one_task() -- tries to dequeue exactly one task from env->src_rq= , as * part of active balancing operations within "domain". --=20 2.34.1