From: Waiman Long <longman@redhat.com>
To: Tejun Heo <tj@kernel.org>
Cc: Zefan Li <lizefan.x@bytedance.com>,
Johannes Weiner <hannes@cmpxchg.org>,
Jonathan Corbet <corbet@lwn.net>,
Lai Jiangshan <jiangshanlai@gmail.com>,
Shuah Khan <shuah@kernel.org>,
cgroups@vger.kernel.org, linux-doc@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org
Subject: Re: [PATCH-cgroup 3/4] cgroup/cpuset: Keep track of CPUs in isolated partitions
Date: Wed, 25 Oct 2023 14:46:01 -0400 [thread overview]
Message-ID: <fd3d0d3b-a58c-890e-8a41-841a1d0a149d@redhat.com> (raw)
In-Reply-To: <ZTc5RXWemIhfrAlS@mtj.duckdns.org>
On 10/23/23 23:25, Tejun Heo wrote:
> Hello, Waiman.
>
> On Wed, Oct 18, 2023 at 02:24:00PM -0400, Waiman Long wrote:
>> If you mean saving the exclusion cpumask no matter who the caller is, we can
>> add another exclusion cpumask to save it and expose it to sysfs. This should
>> be done in the first workqueue patch, not as part of this patch. I expose
>> this isolated cpumask for testing purpose to be checked by the
>> test_cpuset_prs.sh script for correctness. As said, I can expose it without
>> cgroup_debug if you think the information is useful in general.
> I don't really care where the cpumask is in the source tree. I just want all
> the workqueue cpumasks presented to the userspace in a single place. Also, I
> think it makes sense to publish it to userspace in an easily accessible
> manner as what the eventual configuration ends up being can be confusing and
> the effect it has on the system subtle.
I have added 2 more read-only cpumask sysfs files in v2 to expose the
information.
Cheers,
Longman
next prev parent reply other threads:[~2023-10-25 18:46 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-10-13 18:11 [PATCH-cgroup 0/4] cgroup/cpuset: Improve CPU isolation in isolated partitions Waiman Long
2023-10-13 18:11 ` [PATCH-cgroup 1/4] workqueue: Add workqueue_unbound_exclude_cpumask() to exclude CPUs from wq_unbound_cpumask Waiman Long
2023-10-18 9:24 ` Tejun Heo
2023-10-18 13:41 ` Waiman Long
2023-10-18 19:18 ` Waiman Long
2023-10-24 3:28 ` Tejun Heo
2023-10-25 18:47 ` Waiman Long
2023-10-13 18:11 ` [PATCH-cgroup 2/4] selftests/cgroup: Minor code cleanup and reorganization of test_cpuset_prs.sh Waiman Long
2023-10-13 18:11 ` [PATCH-cgroup 3/4] cgroup/cpuset: Keep track of CPUs in isolated partitions Waiman Long
2023-10-18 9:26 ` Tejun Heo
2023-10-18 13:30 ` Waiman Long
2023-10-18 18:08 ` Tejun Heo
2023-10-18 18:24 ` Waiman Long
2023-10-24 3:25 ` Tejun Heo
2023-10-25 18:46 ` Waiman Long [this message]
2023-10-13 18:11 ` [PATCH-cgroup 4/4] cgroup/cpuset: Take isolated CPUs out of workqueue unbound cpumask Waiman Long
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