* [PATCH] docs: document the sysfs ABI for "nohz_full" and "isolated"
@ 2021-12-01 7:18 Kohei Tarumizu
2021-12-01 7:34 ` Greg KH
0 siblings, 1 reply; 3+ messages in thread
From: Kohei Tarumizu @ 2021-12-01 7:18 UTC (permalink / raw)
To: linux-kernel, riel, mchehab+huawei, will, catalin.marinas, gregkh,
corbet, ionela.voinescu, pcc, bilbao, matorola, rafael
Cc: tarumizu.kohei
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
^ permalink raw reply related [flat|nested] 3+ messages in thread* Re: [PATCH] docs: document the sysfs ABI for "nohz_full" and "isolated"
2021-12-01 7:18 [PATCH] docs: document the sysfs ABI for "nohz_full" and "isolated" Kohei Tarumizu
@ 2021-12-01 7:34 ` Greg KH
2021-12-01 11:21 ` tarumizu.kohei
0 siblings, 1 reply; 3+ messages in thread
From: Greg KH @ 2021-12-01 7:34 UTC (permalink / raw)
To: Kohei Tarumizu
Cc: linux-kernel, riel, mchehab+huawei, will, catalin.marinas, corbet,
ionela.voinescu, pcc, bilbao, matorola, rafael
On Wed, Dec 01, 2021 at 04:18:52PM +0900, Kohei Tarumizu wrote:
> 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=".
These should be two different entries, not one please.
thanks,
greg k-h
^ permalink raw reply [flat|nested] 3+ messages in thread* RE: [PATCH] docs: document the sysfs ABI for "nohz_full" and "isolated"
2021-12-01 7:34 ` Greg KH
@ 2021-12-01 11:21 ` tarumizu.kohei
0 siblings, 0 replies; 3+ messages in thread
From: tarumizu.kohei @ 2021-12-01 11:21 UTC (permalink / raw)
To: 'Greg KH'
Cc: linux-kernel@vger.kernel.org, riel@redhat.com,
mchehab+huawei@kernel.org, will@kernel.org,
catalin.marinas@arm.com, corbet@lwn.net, ionela.voinescu@arm.com,
pcc@google.com, bilbao@vt.edu, matorola@gmail.com,
rafael@kernel.org
Thanks for your comment.
> These should be two different entries, not one please.
We would like to send the next version patch with separate entries.
^ permalink raw reply [flat|nested] 3+ messages in thread
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2021-12-01 7:18 [PATCH] docs: document the sysfs ABI for "nohz_full" and "isolated" Kohei Tarumizu
2021-12-01 7:34 ` Greg KH
2021-12-01 11:21 ` tarumizu.kohei
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