From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from ms.lwn.net (ms.lwn.net [45.79.88.28]) (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 DB806139CFF; Thu, 16 Jan 2025 18:18:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.79.88.28 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1737051505; cv=none; b=rBTFvZg8Ev5olRp+5+21udBc+/Q+pjrRX7V2gcuvST2Qpe7zoQ++deJ9tBR1Dl3Pbdzs0A7AZbDnPEBVGVrl1ozro+EINJmbk/pmcrP6Pg9BfHxsExjGKEL+FyhXQH37GznqecRVfZQUG1YgQRNaEixULe/S/2C8vY8J/Gk00nc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1737051505; c=relaxed/simple; bh=36mSOMMXnehWka4csq9B2MkRKuZqb8l9eaKyfBROMcE=; h=From:To:Cc:Subject:In-Reply-To:References:Date:Message-ID: MIME-Version:Content-Type; b=Qeo2YygL1KZqhESccOHz89cdAQYBRdxTeasYKwnWXaJ73IDTOM9TNXuWA6WAODgmfo46MNSVxipuhSoozNVxBLSB93mGGtKrUR+WFSgu2RMjChYQk6z0FZRLy9choEe+cksct0tOExY44EkfeZwAuBnC2sFl8g41FU/1Zy7bNS0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=lwn.net; spf=pass smtp.mailfrom=lwn.net; dkim=pass (2048-bit key) header.d=lwn.net header.i=@lwn.net header.b=Et1fi1hN; arc=none smtp.client-ip=45.79.88.28 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=lwn.net Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=lwn.net Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=lwn.net header.i=@lwn.net header.b="Et1fi1hN" DKIM-Filter: OpenDKIM Filter v2.11.0 ms.lwn.net 16249404F0 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=lwn.net; s=20201203; t=1737051503; bh=J1Ei2keOWRCLbp3byjt3HSVTIMZgq4JtjfOT3523mzQ=; h=From:To:Cc:Subject:In-Reply-To:References:Date:From; b=Et1fi1hNAB/Ghx4iRXOv++8HGjeqdJNPclFYWn2USTDURCnE35xE9fsoyqceyo7RO 7OwyaQelHND785S7Jge7ULwTsuku+k7GHdEt856q0MB9jRZFVkJUg6ou/X+D20AHHC Y8aP7Lb0Q3gprek/V762lD0nVpow7BsLGbs0liSGuyvtQSiryxVAYzLIdvv8KIII97 XVAumgPid4htiHhkrWooYZyTDJhnDG+0o5P3d4Y9BMKxXz79fHj3IgS/0AuWVEoRlv B2ROuYK7SS0hE3Hfn0jwKCAn6dihwEuZgfkTbRt2LHKeT+Ms9YDfxf2uXzwPkmx58D nEbE9mfOv/vHw== Received: from localhost (unknown [IPv6:2601:280:5e00:625::1fe]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by ms.lwn.net (Postfix) with ESMTPSA id 16249404F0; Thu, 16 Jan 2025 18:18:23 +0000 (UTC) From: Jonathan Corbet To: Phil Auld , linux-kernel@vger.kernel.org Cc: linux-doc@vger.kernel.org Subject: Re: [PATCH v2] Documentation/sysctl: Add timer_migration to kernel.rst In-Reply-To: <20250114190525.169022-1-pauld@redhat.com> References: <20250114190525.169022-1-pauld@redhat.com> Date: Thu, 16 Jan 2025 11:18:22 -0700 Message-ID: <87msfqzkpd.fsf@trenco.lwn.net> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain Phil Auld writes: > There is no mention of timer_migration in the docs. Add > a short description. > > Signed-off-by: Phil Auld > Cc: Jonathan Corbet > Cc: linux-doc@vger.kernel.org > --- > Documentation/admin-guide/sysctl/kernel.rst | 7 +++++++ > 1 file changed, 7 insertions(+) > > diff --git a/Documentation/admin-guide/sysctl/kernel.rst b/Documentation/admin-guide/sysctl/kernel.rst > index b2b36d0c3094..7c759797501d 100644 > --- a/Documentation/admin-guide/sysctl/kernel.rst > +++ b/Documentation/admin-guide/sysctl/kernel.rst > @@ -1544,6 +1544,13 @@ constant ``FUTEX_TID_MASK`` (0x3fffffff). > If a value outside of this range is written to ``threads-max`` an > ``EINVAL`` error occurs. > > +timer_migration > +=============== > + > +When set to a non-zero value, attempt to migrate timers away from idle cpus to > +allow them to remain in low power states longer. > + > +Default is set (1). Applied, thanks. jon