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[ Upstream commit261dce3d64] Now when isolcpus is enabled via the cmdline, wq_isolated_cpumask does not include these isolated CPUs, even wq_unbound_cpumask has already excluded them. It is only when we successfully configure an isolate cpuset partition that wq_isolated_cpumask gets overwritten by workqueue_unbound_exclude_cpumask(), including both the cmdline-specified isolated CPUs and the isolated CPUs within the cpuset partitions. Fix this issue by initializing wq_isolated_cpumask properly in workqueue_init_early(). Fixes:fe28f631fa("workqueue: Add workqueue_unbound_exclude_cpumask() to exclude CPUs from wq_unbound_cpumask") Signed-off-by: Chuyi Zhou <zhouchuyi@bytedance.com> Reviewed-by: Waiman Long <longman@redhat.com> Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.