From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pl1-f172.google.com (mail-pl1-f172.google.com [209.85.214.172]) (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 84AEB42314A for ; Mon, 6 Jul 2026 09:08:20 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.172 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783328907; cv=none; b=vEk8W2ZTPHTWxxHPC43M2MyNs63vRut+bjEse6FxWuyOZf6wNEQ9PQAp8YOo/qiL3TOLxe3Bexv3LdXlSKLq3Df5eBbfm5Zzeo9Xzp++YxrRDafwurL446SmBy2dKDqcFKqYj3IQH5M1YnPbXSCHVBcfE5WRyfkaWkHB94JQuoQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783328907; c=relaxed/simple; bh=TjPIj8npnPnhL81/GnelG9md8qmHEHK+tC5HJoX/u/w=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Ak1QNLwiNsIrLz+gYZAZmgMUyO0Avs7+a/ZDirKBJK2HCmFwW+9RTTGSoimejsUOl4peiPgQc1ZkvHjYppK3uQ3pteOavRxBSMJ1f0/CsBPxGA2YQcefe9lEZ7rqIzVh3qYtD4sNUqi1eFZYyzFYBPo5fFU0X/V0/XbfU4UWcjA= 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=EQVWvEgt; arc=none smtp.client-ip=209.85.214.172 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="EQVWvEgt" Received: by mail-pl1-f172.google.com with SMTP id d9443c01a7336-2cc8e87f29bso7110215ad.2 for ; Mon, 06 Jul 2026 02:08:20 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1783328898; x=1783933698; 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=TjPIj8npnPnhL81/GnelG9md8qmHEHK+tC5HJoX/u/w=; b=EQVWvEgtuDMZzcP8UpGUDaHbgp70V14QrmwA5vVonwonet+4m7z/s6gbtR3yAXxiIC RRXlaPgicFf7YBOWI8jIQaUxUnoVJPTXp8CxUbHRmnLoHIRzZXqL4eNs5/3VCFaJUa7c 0QutGf9EhBGKDkaW6cViaJNkmbFIw3N6bBBQaNQW6Z0Yg87zewUQExdm/KjPA0yROYQv u6i1MowqWwHYj5QDDEAPR+V2FZ8wRxibkA2AYI5F2DY1zbslpaVAZtC0s314dDDMtaYR qndcB6uMCOP4XYNaMMc9xnVSGHgJBwQXNUtZOHguK0z2mfJf8EW7r0x8PoJAmvCMXO0n +oXQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1783328898; x=1783933698; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to; bh=TjPIj8npnPnhL81/GnelG9md8qmHEHK+tC5HJoX/u/w=; b=KVC7aU2Ph1UFQSnveILr1dQM7Q1dkypboj5LI0HyvLVIhIke7i8cW9MJow1uHvAKvP JJtwSYKyDdDnoe1PEf7svIqCaX4zrGscV8omdzXkW6J5VnSVPXUhvPFT8NdvfVj3/1ox 5ajb08EczeiaMaohhJhH8LgYsyUqyjXJri4VZAgzeZifgtimfFTi0+BvzFzpyy+dvAY+ DyUYASunTchEdOXgxDNLabrgFujuzUG0pVVFiAKfkieEXEhomZWeOcvbQwBmctA5dzXO fugnTNG30/o42rbhuw32UxS0Rqr8KY1LNpE8eRkz7DnSnJ+gd4oKyqTyc/bXQz9YCKWC eNYQ== X-Forwarded-Encrypted: i=1; AHgh+RonHhY28bxBNn6eZQaKMC+jsgQpu9EPXF0sYUD+UU436dtNqNMvTw/8wRZ1RHC677ci8UfOe6ApbmX7r2M=@vger.kernel.org X-Gm-Message-State: AOJu0Yzpn83785rW5iukgLY2gY0BQ9MqhdqBVBr/7JYW1+UEK1kVbG8/ 8RNO5+l4uWNDPWV7ZvU/uKfc1vnyBsR4vYUDBaSX9/wVjT262yWtBy7V X-Gm-Gg: AfdE7cnnb9ECS6ZWSJTkEr3Mmxooc54zCyID1bqLLnzl23llydn+5pc5yRi1zmtetz3 V1Ukn6mwGbMbFoEJM6nRYe4Cr6rxDCPw+RpvnbiDFDCaeYOO3umVPbKfsWiU2IaP4Qup6tyPo/T i3L7FSb4HBmpJhsXgEyJz+KUL3pfHqRhSydvytbyYogX4He3ow0NGEw2zzh5i7n/RboYra2n9iR 9MaXwYFyBYiyPxf5ELIQbl/m3sc3nOH4rGxCjeD8TbUcnSTbrAal6v949nPFivWbXPUPsRNPIId 2kTUf0B1eXefojXgQw8NRBCaF25pNGNCbEMN1hkGER/J3KHfalyJBs3D4FfhZqb/LKrj1kLzdcg K9AX8oLq0KFmuiFqgcXb+NiYmVlJBxLrcDGogKtaWD7XpW24LpnAZ+e+kwydApfco33BLSEZHCH 9A7UNjvLOFebj05eR51KOAMw0K0h+8q2Uy3z6SGuU8Q75QG+LTVwU1d1lHnnY8YNb19Q== X-Received: by 2002:a17:902:ecc8:b0:2ca:c84b:c4a4 with SMTP id d9443c01a7336-2cbb9ea61bemr100525265ad.28.1783328898466; Mon, 06 Jul 2026 02:08:18 -0700 (PDT) Received: from mi-HP-ProDesk-680-G6-PCI-Microtower-PC.mioffice.cn ([43.224.245.226]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2cad7146914sm46912145ad.35.2026.07.06.02.08.14 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 06 Jul 2026 02:08:18 -0700 (PDT) From: soolaugust@gmail.com To: Vincent Guittot Cc: "zhidao su (Xiaomi)" , mingo@redhat.com, peterz@infradead.org, juri.lelli@redhat.com, dietmar.eggemann@arm.com, rostedt@goodmis.org, bsegall@google.com, mgorman@suse.de, vschneid@redhat.com, kprateek.nayak@amd.com, jstultz@google.com, linux-kernel@vger.kernel.org Subject: Re: [PATCH] sched/fair: align proxy wakeup buddy handling with EEVDF Date: Mon, 6 Jul 2026 17:08:12 +0800 Message-ID: <20260706090812.3469388-1-soolaugust@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: References: <20260706023440.3055519-1-soolaugust@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: 8bit From: "zhidao su (Xiaomi)" On Mon, Jul 06, 2026 at 10:16:47AM +0200, Vincent Guittot wrote: > Which version are you using ? there is nothing like > check_preempt_wakeup_fair() in mainline or tip/sched/core > > And does the issue still apply with the latest scheduler changes? Thanks for checking, and sorry for the noise. You are right. I based this on an old local proxy-exec work branch and failed to state the base tree/commit in the submission. That branch still had check_preempt_wakeup_fair(), but current mainline/tip and the newer proxy-exec branches have moved to wakeup_preempt_fair(). I rechecked the newer code and the wakeup path has already been reworked around preempt_action/set_preempt_buddy(), including the PREEMPT_WAKEUP_SHORT buddy cleanup path. So this patch does not apply to the current scheduler code and should be ignored. I'll fix my local pre-send checks so patches like this have to apply to the intended target baseline before I send them. Thanks, zhidao