From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2F484C433EF for ; Wed, 1 Dec 2021 07:20:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1347231AbhLAHXW (ORCPT ); Wed, 1 Dec 2021 02:23:22 -0500 Received: from esa11.hc1455-7.c3s2.iphmx.com ([207.54.90.137]:62323 "EHLO esa11.hc1455-7.c3s2.iphmx.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1347207AbhLAHXV (ORCPT ); Wed, 1 Dec 2021 02:23:21 -0500 IronPort-SDR: uTHmd4yy9h88suelOl1038q0rHlv1nfx9zJ2+F4cCLM7pihh67L+o3BHFDq3EnFX0jTPaSLHaF q785b6ez9PfM7L3e8Ll994QDVJJgq+2mKN4swsGavE2QNvH7FoWLAO4mJZNlToUhclzUbSxgqW YIbC3qbfXJNbdBA5accYCWVeokJppiYUf0WGnp9Ym6NM+SD7yhZYi2bg8uWlmzLxh1vIWRQc0S cv4szuCxc6e7/xt7NU8tW+VOPtrDpaPH3RPBkVLlMuAKAMl+D6yRdpASI6lMxTL477RvgcAgGB eSXTDyaBSF0Cd2z6TQmFpEVb X-IronPort-AV: E=McAfee;i="6200,9189,10184"; a="34210207" X-IronPort-AV: E=Sophos;i="5.87,278,1631545200"; d="scan'208";a="34210207" Received: from unknown (HELO yto-r4.gw.nic.fujitsu.com) ([218.44.52.220]) by esa11.hc1455-7.c3s2.iphmx.com with ESMTP; 01 Dec 2021 16:19:59 +0900 Received: from yto-m4.gw.nic.fujitsu.com (yto-nat-yto-m4.gw.nic.fujitsu.com [192.168.83.67]) by yto-r4.gw.nic.fujitsu.com (Postfix) with ESMTP id 19C59E0404 for ; Wed, 1 Dec 2021 16:19:58 +0900 (JST) Received: from yto-om3.fujitsu.com (yto-om3.o.css.fujitsu.com [10.128.89.164]) by yto-m4.gw.nic.fujitsu.com (Postfix) with ESMTP id F32A2EA0EC for ; Wed, 1 Dec 2021 16:19:56 +0900 (JST) Received: from localhost.localdomain (n3235113.np.ts.nmh.cs.fujitsu.co.jp [10.123.235.113]) by yto-om3.fujitsu.com (Postfix) with ESMTP id 953704007EDD3; Wed, 1 Dec 2021 16:19:56 +0900 (JST) From: Kohei Tarumizu To: linux-kernel@vger.kernel.org, riel@redhat.com, mchehab+huawei@kernel.org, will@kernel.org, catalin.marinas@arm.com, gregkh@linuxfoundation.org, corbet@lwn.net, ionela.voinescu@arm.com, pcc@google.com, bilbao@vt.edu, matorola@gmail.com, rafael@kernel.org Cc: tarumizu.kohei@fujitsu.com Subject: [PATCH] docs: document the sysfs ABI for "nohz_full" and "isolated" Date: Wed, 1 Dec 2021 16:18:52 +0900 Message-Id: <20211201071852.3568489-1-tarumizu.kohei@fujitsu.com> X-Mailer: git-send-email 2.27.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add missing documentation of sysfs ABI for "nohz_full" and "isolated". "nohz_full" was added by commit 6570a9a1ce3a("show nohz_full cpus in sysfs") and "isolated" was added by commit 59f30abe94bf("show isolated cpus in sysfs"). However, there is no documentation for these interface. Signed-off-by: Kohei Tarumizu --- Documentation/ABI/testing/sysfs-devices-system-cpu | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/Documentation/ABI/testing/sysfs-devices-system-cpu b/Documentation/ABI/testing/sysfs-devices-system-cpu index 69c65da16dff..a9d5d87b6a41 100644 --- a/Documentation/ABI/testing/sysfs-devices-system-cpu +++ b/Documentation/ABI/testing/sysfs-devices-system-cpu @@ -666,3 +666,16 @@ Description: Preferred MTE tag checking mode ================ ============================================== See also: Documentation/arm64/memory-tagging-extension.rst + +What: /sys/devices/system/cpu/nohz_full + /sys/devices/system/cpu/isolated +Date: Apr 2015 +Contact: Linux kernel mailing list +Description: information about CPU isolation. + + nohz_full: (RO) the list of CPUs that are in nohz_full mode. + These CPUs are set by boot parameter "nohz_full=". + + isolated: (RO) the list of CPUs that are isolated and don't + participate in load balancing. These CPUs are set by + boot parameter "isolcpus=". -- 2.27.0