linux-kernel - [PATCH-cgroup v2 0/5] cgroup/cpuset: Fix miscellaneous issues

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Date: Mon, 17 Jun 2024 10:39:40 -0400
From: Waiman Long <longman@...hat.com>
To: Tejun Heo <tj@...nel.org>,
	Zefan Li <lizefan.x@...edance.com>,
	Johannes Weiner <hannes@...xchg.org>,
	Jonathan Corbet <corbet@....net>,
	Shuah Khan <shuah@...nel.org>
Cc: cgroups@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-doc@...r.kernel.org,
	linux-kselftest@...r.kernel.org,
	Xavier <ghostxavier@...a.com>,
	Peter Hunt <pehunt@...hat.com>,
	Petr Malat <oss@...at.biz>,
	Waiman Long <longman@...hat.com>
Subject: [PATCH-cgroup v2 0/5] cgroup/cpuset: Fix miscellaneous issues

 v2:
  - Fix test_cpuset_prs.sh problems reported by test robot
  - Relax restriction imposed between cpuset.cpus.exclusive and
    cpuset.cpus of sibling cpusets.
  - Make cpuset.cpus.exclusive independent of cpuset.cpus. 
  - Update test_cpuset_prs.sh accordingly.
  
 [v1] https://lore.kernel.org/lkml/20240605171858.1323464-1-longman@redhat.com/

This patchset attempts to address the following cpuset issues.
 1) While reviewing the generate_sched_domains() function, I found a bug
    in generating sched domains for remote non-isolating partitions.
 2) Test robot had reported a test_cpuset_prs.sh test failure.
 3) The current exclusivity test between cpuset.cpus.exclusive and
    cpuset.cpus and the restriction that the set effective exclusive
    CPUs has to be a subset of cpuset.cpus make it harder to preconfigure
    the cgroup hierarchy to enable remote partition.

The test_cpuset_prs.sh script is updated to match changes made in this
patchset and was run to verify that the new code did not cause any
regression.

Waiman Long (5):
  cgroup/cpuset: Fix remote root partition creation problem
  selftest/cgroup: Fix test_cpuset_prs.sh problems reported by test
    robot
  cgroup/cpuset: Delay setting of CS_CPU_EXCLUSIVE until valid partition
  cgroup/cpuset: Make cpuset.cpus.exclusive independent of cpuset.cpus
  selftest/cgroup: Update test_cpuset_prs.sh to match changes

 Documentation/admin-guide/cgroup-v2.rst       |  12 +-
 kernel/cgroup/cpuset.c                        | 158 +++++++++++++-----
 .../selftests/cgroup/test_cpuset_prs.sh       |  75 ++++++---
 3 files changed, 180 insertions(+), 65 deletions(-)

-- 
2.39.3