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>, Waiman Long <longman@redhat.com> Subject: [PATCH v2 0/6] cgroup/cpuset: Add new cpuset partition type & empty effecitve cpus Date: Mon, 21 Jun 2021 14:49:18 -0400 [thread overview] Message-ID: <20210621184924.27493-1-longman@redhat.com> (raw) v2: - Drop v1 patch 1. - Break out some cosmetic changes into a separate patch (patch #1). - Add a new patch to clarify the transition to invalid partition root is mainly caused by hotplug events. - Enhance the partition root state test including CPU online/offline behavior and fix issues found by the test. This patchset makes the following three major changes to the cpuset v2 code: Patch 2: Clarify the use of invalid partition root and add new checks to make sure that normal cpuset control file operations will not be allowed to create invalid partition root. It also fixes some of the issues in existing code. Patch 3: 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 4: Allow partition roots that are not the top cpuset to distribute all its cpus to child partitions as long as there is no task associated with that partition root. This allows more flexibility for middleware to manage multiple partitions. Patch 5 updates the cgroup-v2.rst file accordingly. Patch 5 adds a new cpuset test to test the new cpuset partition code. Waiman Long (6): cgroup/cpuset: Miscellaneous code cleanup cgroup/cpuset: Clarify the use of invalid partition root cgroup/cpuset: Add a new isolated cpus.partition type cgroup/cpuset: Allow non-top parent partition root to distribute out all CPUs 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 | 65 +- kernel/cgroup/cpuset.c | 285 ++++++--- tools/testing/selftests/cgroup/Makefile | 2 +- .../selftests/cgroup/test_cpuset_prs.sh | 558 ++++++++++++++++++ 4 files changed, 794 insertions(+), 116 deletions(-) create mode 100755 tools/testing/selftests/cgroup/test_cpuset_prs.sh -- 2.18.1
WARNING: multiple messages have this Message-ID (diff)
From: Waiman Long <longman-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> To: Tejun Heo <tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>, Zefan Li <lizefan.x-EC8Uxl6Npydl57MIdRCFDg@public.gmane.org>, Johannes Weiner <hannes-druUgvl0LCNAfugRpC6u6w@public.gmane.org>, Jonathan Corbet <corbet-T1hC0tSOHrs@public.gmane.org>, Shuah Khan <shuah-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org> Cc: cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-doc-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-kselftest-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Andrew Morton <akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>, Roman Gushchin <guro-b10kYP2dOMg@public.gmane.org>, Phil Auld <pauld-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>, Peter Zijlstra <peterz-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>, Juri Lelli <juri.lelli-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>, Waiman Long <longman-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> Subject: [PATCH v2 0/6] cgroup/cpuset: Add new cpuset partition type & empty effecitve cpus Date: Mon, 21 Jun 2021 14:49:18 -0400 [thread overview] Message-ID: <20210621184924.27493-1-longman@redhat.com> (raw) v2: - Drop v1 patch 1. - Break out some cosmetic changes into a separate patch (patch #1). - Add a new patch to clarify the transition to invalid partition root is mainly caused by hotplug events. - Enhance the partition root state test including CPU online/offline behavior and fix issues found by the test. This patchset makes the following three major changes to the cpuset v2 code: Patch 2: Clarify the use of invalid partition root and add new checks to make sure that normal cpuset control file operations will not be allowed to create invalid partition root. It also fixes some of the issues in existing code. Patch 3: 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 4: Allow partition roots that are not the top cpuset to distribute all its cpus to child partitions as long as there is no task associated with that partition root. This allows more flexibility for middleware to manage multiple partitions. Patch 5 updates the cgroup-v2.rst file accordingly. Patch 5 adds a new cpuset test to test the new cpuset partition code. Waiman Long (6): cgroup/cpuset: Miscellaneous code cleanup cgroup/cpuset: Clarify the use of invalid partition root cgroup/cpuset: Add a new isolated cpus.partition type cgroup/cpuset: Allow non-top parent partition root to distribute out all CPUs 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 | 65 +- kernel/cgroup/cpuset.c | 285 ++++++--- tools/testing/selftests/cgroup/Makefile | 2 +- .../selftests/cgroup/test_cpuset_prs.sh | 558 ++++++++++++++++++ 4 files changed, 794 insertions(+), 116 deletions(-) create mode 100755 tools/testing/selftests/cgroup/test_cpuset_prs.sh -- 2.18.1
next reply other threads:[~2021-06-21 18:49 UTC|newest] Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-06-21 18:49 Waiman Long [this message] 2021-06-21 18:49 ` [PATCH v2 0/6] cgroup/cpuset: Add new cpuset partition type & empty effecitve cpus Waiman Long 2021-06-21 18:49 ` [PATCH v2 1/6] cgroup/cpuset: Miscellaneous code cleanup Waiman Long 2021-06-21 18:49 ` Waiman Long 2021-06-21 18:49 ` [PATCH v2 2/6] cgroup/cpuset: Clarify the use of invalid partition root Waiman Long 2021-06-26 10:53 ` Tejun Heo 2021-06-28 13:06 ` Waiman Long 2021-06-28 13:06 ` Waiman Long 2021-07-05 17:51 ` Tejun Heo 2021-07-16 18:44 ` Waiman Long 2021-07-16 18:44 ` Waiman Long 2021-07-16 18:59 ` Waiman Long 2021-07-16 18:59 ` Waiman Long 2021-07-16 20:08 ` Waiman Long 2021-07-16 20:08 ` Waiman Long 2021-07-16 20:46 ` Tejun Heo 2021-07-16 21:12 ` Waiman Long 2021-07-16 21:12 ` Waiman Long 2021-07-16 21:18 ` Tejun Heo 2021-07-16 21:18 ` Tejun Heo 2021-07-16 21:28 ` Waiman Long 2021-07-16 21:28 ` Waiman Long 2021-06-21 18:49 ` [PATCH v2 3/6] cgroup/cpuset: Add a new isolated cpus.partition type Waiman Long 2021-06-21 18:49 ` Waiman Long 2021-06-24 12:51 ` Michal Koutný 2021-06-24 12:51 ` Michal Koutný 2021-06-24 15:23 ` Waiman Long 2021-06-24 15:23 ` Waiman Long 2021-06-21 18:49 ` [PATCH v2 4/6] cgroup/cpuset: Allow non-top parent partition root to distribute out all CPUs Waiman Long 2021-06-21 18:49 ` Waiman Long 2021-06-21 18:49 ` [PATCH v2 5/6] cgroup/cpuset: Update description of cpuset.cpus.partition in cgroup-v2.rst Waiman Long 2021-06-21 18:49 ` Waiman Long 2021-06-21 18:49 ` [PATCH v2 6/6] kselftest/cgroup: Add cpuset v2 partition root state test Waiman Long
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