From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pg1-f175.google.com (mail-pg1-f175.google.com [209.85.215.175]) (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 E8A4352F74 for ; Thu, 11 Jan 2024 18:16:29 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linaro.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linaro.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="hAHStZxh" Received: by mail-pg1-f175.google.com with SMTP id 41be03b00d2f7-5cdbc7bebecso2477879a12.1 for ; Thu, 11 Jan 2024 10:16:29 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1704996989; x=1705601789; darn=vger.kernel.org; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:from:to:cc:subject:date:message-id:reply-to; bh=DIGTPxSUQMK04RZ3/HlDw07M+fndzwXuVoi9HmaACM8=; b=hAHStZxh+hDcRjhrQTVka8253fvh/QyKBJovK9EA9NHmIHkWk76kndvD/Xt4ZTKA3/ SI2HiB44QsLbUHD1r18RZzRe7v4vvpuPCYrTBaZrHUHFHvgFNP/QUfFsS5xktPqu7kv7 lL2Mv8NJ4MS70z6G8NOFeeEhwm9fil/DjzyLbx6kZsqXXLPDBFzYMOralrZfPb9yNRoq gs2+/l0d073Di1LX4sEol4aol26HJ4nFX8CmHXbYVvOzYKWo9QvqdRwc29oTy5y00lhB Zh+D07BTfU+WnCIV7mRD+Dz/Z9UzUX6SbC0lgHoOS2YBRaRUN0171sS8CiannCiYjDWs qQbQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1704996989; x=1705601789; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=DIGTPxSUQMK04RZ3/HlDw07M+fndzwXuVoi9HmaACM8=; b=by60/vTGGCRq92WlpT6akuafJWH5LqYQFrvdgratCP/0MAs8B8CtomSWuYEdPROlNs pObV/jmlDjs08fSIQ/H6gZa4cljxn4g8BvECG3eYIpU0LwSSBXXGLCBUvPBaYONZkqJt Aoicusk4JFfTX6ZXJOUmv2fYjglORmv3+OGjsydlKvBsdhJdReNYu6WoEvW0lDsMmWS2 m0b3Fy1+7F4BWxg5N3YWwr2/ZsPF8ljsDTzwiSY3y5kMlOeAwJYTzfBttKpiHVuVXpyE Jkl+UKX6PS77aUkpGcebysGJDlA8QdVzpNaaGuNajJy5+GNTXF7nzTIO+AlyvlqUyHBY M9JQ== X-Gm-Message-State: AOJu0YxsVJWJlp7o5222X3/5ZYZZR3N1dMH1GKM6UbUyncm0n3uheQ2a tT2Glrz41ghFOn/WNrh1S0PTY4yb1QfhbJ9FqvYFxFGWOdM37Q== X-Google-Smtp-Source: AGHT+IFEZcHN2XJquUzQAiaMw7L0X98vRHDRasyouzfB/0ndw2QgplMQTYhc8L1GpbK1BGPXduZj0ennaYg4QqIApxs= X-Received: by 2002:a05:6a21:6d87:b0:199:95cf:7e30 with SMTP id wl7-20020a056a216d8700b0019995cf7e30mr224360pzb.93.1704996989252; Thu, 11 Jan 2024 10:16:29 -0800 (PST) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 References: In-Reply-To: From: Vincent Guittot Date: Thu, 11 Jan 2024 19:16:18 +0100 Message-ID: Subject: Re: [GIT PULL] Scheduler changes for v6.8 To: Linus Torvalds Cc: Ingo Molnar , linux-kernel@vger.kernel.org, Peter Zijlstra , Thomas Gleixner , Juri Lelli , Dietmar Eggemann , Steven Rostedt , Ben Segall , Mel Gorman , Daniel Bristot de Oliveira , Valentin Schneider Content-Type: text/plain; charset="UTF-8" On Thu, 11 Jan 2024 at 18:53, Linus Torvalds wrote: > > On Thu, 11 Jan 2024 at 09:45, Linus Torvalds > wrote: > > > > On Thu, 11 Jan 2024 at 00:11, Vincent Guittot > > wrote: > > > > > > Could you confirm that cpufreq governor is schedutil and the driver is > > > amd-pstate on your system ? > > > > schedutil yes, amd-pstate no. I actually just use acpi_cpufreq > > Bah. Hit 'send' mistakenly too soon, thus the abrupt end and > unfinished quoting removal. > > And don't ask me why it's acpi_pstate-driven. I have X86_AMD_PSTATE=y, but > > /sys/devices/system/cpu/cpufreq/policy0/scaling_driver > > clearly says 'acpi-cpufreq'. Maybe I'm looking in the wrong place. My dmesg says That seems to be the right place to look > > amd_pstate: the _CPC object is not present in SBIOS or ACPI disabled > > which is presumably the reason my machine uses acpi-pstate. > > I will also test out your other questions, but I need to go back and > do more pull requests first. ok, thanks I'm going to continue checking what else could trigger such regression having in mind that your system should not have beeb impacted by this changes > > Linus