From: Kohei Tarumizu <tarumizu.kohei@fujitsu.com>
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 [thread overview]
Message-ID: <20211201071852.3568489-1-tarumizu.kohei@fujitsu.com> (raw)
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 <tarumizu.kohei@fujitsu.com>
---
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 <linux-kernel@vger.kernel.org>
+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
next reply other threads:[~2021-12-01 7:20 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-01 7:18 Kohei Tarumizu [this message]
2021-12-01 7:34 ` [PATCH] docs: document the sysfs ABI for "nohz_full" and "isolated" Greg KH
2021-12-01 11:21 ` tarumizu.kohei
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