From: Waiman Long <longman@redhat.com>
To: Tejun Heo <tj@kernel.org>, Zefan Li <lizefan.x@bytedance.com>,
Johannes Weiner <hannes@cmpxchg.org>,
Jonathan Corbet <corbet@lwn.net>, Shuah Khan <shuah@kernel.org>
Cc: cgroups@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-doc@vger.kernel.org, linux-kselftest@vger.kernel.org,
"Andrew Morton" <akpm@linux-foundation.org>,
"Roman Gushchin" <guro@fb.com>, "Phil Auld" <pauld@redhat.com>,
"Peter Zijlstra" <peterz@infradead.org>,
"Juri Lelli" <juri.lelli@redhat.com>,
"Frederic Weisbecker" <frederic@kernel.org>,
"Marcelo Tosatti" <mtosatti@redhat.com>,
"Michal Koutný" <mkoutny@suse.com>
Subject: Re: [PATCH v9 0/7] cgroup/cpuset: Add new cpuset partition type & empty effecitve cpus
Date: Thu, 9 Dec 2021 10:39:55 -0500 [thread overview]
Message-ID: <f74efd4a-eee8-3927-f975-92b4c457cb9c@redhat.com> (raw)
In-Reply-To: <20211205183220.818872-1-longman@redhat.com>
On 12/5/21 13:32, Waiman Long wrote:
> v9:
> - Add a new patch 1 to remove the child cpuset restriction on parent's
> "cpuset.cpus".
> - Relax initial root partition entry limitation to allow cpuset.cpus to
> overlap that of parent's.
> - An "isolated invalid" displayed type is added to
> cpuset.cpus.partition.
> - Resetting partition root to "member" will leave child partition root
> as invalid.
> - Update documentation and test accordingly.
>
> v8:
> - Reorganize the patch series and rationalize the features and
> constraints of a partition.
> - Update patch descriptions and documentation accordingly.
>
> v7:
> - Simplify the documentation patch (patch 5) as suggested by Tejun.
> - Fix a typo in patch 2 and improper commit log in patch 3.
>
> This patchset includes one bug fix and four enhancements to the cpuset v2 code.
>
> Patch 1: Allow parent to set "cpuset.cpus" that may not be a superset
> of children's "cpuset.cpus" for default hierarchy.
>
> Patch 2: Enable partition with no task to have empty cpuset.cpus.effective.
>
> Patch 3: Refining the features and constraints of a cpuset partition
> clarifying what changes are allowed.
>
> Patch 4: Add a new partition state "isolated" to create a partition
> root without load balancing. This is for handling intermitten workloads
> that have a strict low latency requirement.
>
> Patch 5: Enable the "cpuset.cpus.partition" file to show the reason
> that causes invalid partition like "root invalid (No cpu available
> due to hotplug)".
>
> Patch 6 updates the cgroup-v2.rst file accordingly. Patch 7 adds a new
> cpuset test to test the new cpuset partition code.
>
> Waiman Long (7):
> cgroup/cpuset: Don't let child cpusets restrict parent in default
> hierarchy
> cgroup/cpuset: Allow no-task partition to have empty
> cpuset.cpus.effective
> cgroup/cpuset: Refining features and constraints of a partition
> cgroup/cpuset: Add a new isolated cpus.partition type
> cgroup/cpuset: Show invalid partition reason string
> cgroup/cpuset: Update description of cpuset.cpus.partition in
> cgroup-v2.rst
> kselftest/cgroup: Add cpuset v2 partition root state test
>
> Documentation/admin-guide/cgroup-v2.rst | 168 +++--
> kernel/cgroup/cpuset.c | 440 +++++++-----
> tools/testing/selftests/cgroup/Makefile | 5 +-
> .../selftests/cgroup/test_cpuset_prs.sh | 667 ++++++++++++++++++
> tools/testing/selftests/cgroup/wait_inotify.c | 87 +++
> 5 files changed, 1142 insertions(+), 225 deletions(-)
> create mode 100755 tools/testing/selftests/cgroup/test_cpuset_prs.sh
> create mode 100644 tools/testing/selftests/cgroup/wait_inotify.c
>
Hi,
Is this patch series good enough or is there other changes you would
still like to make in this series?
Cheers,
Longman
prev parent reply other threads:[~2021-12-09 15:40 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-05 18:32 [PATCH v9 0/7] cgroup/cpuset: Add new cpuset partition type & empty effecitve cpus Waiman Long
2021-12-05 18:32 ` [PATCH v9 1/7] cgroup/cpuset: Don't let child cpusets restrict parent in default hierarchy Waiman Long
2021-12-13 20:41 ` Tejun Heo
2021-12-15 12:23 ` Michal Koutný
2021-12-15 17:59 ` Waiman Long
2021-12-17 15:48 ` [PATCH] cgroup/cpuset: Make child cpusets restrict parents on v1 hierarchy Michal Koutný
2021-12-17 16:34 ` Waiman Long
2022-01-12 21:25 ` Tejun Heo
2021-12-05 18:32 ` [PATCH v9 2/7] cgroup/cpuset: Allow no-task partition to have empty cpuset.cpus.effective Waiman Long
2021-12-13 20:45 ` Tejun Heo
2021-12-15 3:24 ` Waiman Long
2021-12-15 10:36 ` Michal Koutný
2021-12-05 18:32 ` [PATCH v9 3/7] cgroup/cpuset: Refining features and constraints of a partition Waiman Long
2021-12-15 14:49 ` Michal Koutný
2021-12-15 16:29 ` Waiman Long
2021-12-16 9:28 ` Michal Koutný
2021-12-05 18:32 ` [PATCH v9 4/7] cgroup/cpuset: Add a new isolated cpus.partition type Waiman Long
2022-01-12 15:21 ` Peter Zijlstra
2022-01-12 15:40 ` Waiman Long
2022-01-12 21:23 ` Tejun Heo
2021-12-05 18:32 ` [PATCH v9 5/7] cgroup/cpuset: Show invalid partition reason string Waiman Long
2021-12-05 18:32 ` [PATCH v9 6/7] cgroup/cpuset: Update description of cpuset.cpus.partition in cgroup-v2.rst Waiman Long
2021-12-13 21:00 ` Tejun Heo
2021-12-15 14:44 ` Michal Koutný
2021-12-15 18:16 ` Waiman Long
2021-12-15 18:35 ` Tejun Heo
2021-12-15 18:55 ` Waiman Long
2022-01-12 21:21 ` Tejun Heo
2021-12-05 18:32 ` [PATCH v9 7/7] kselftest/cgroup: Add cpuset v2 partition root state test Waiman Long
2021-12-09 15:39 ` Waiman Long [this message]
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