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Lack of visibility has always been a pain point for workqueues. While the recently added wq_monitor.py improved the situation, it's still difficult to understand what worker pools are active in the system, how workqueues map to them and why. The lack of visibility into how workqueues are configured is going to become more noticeable as workqueue improves locality awareness and provides more mechanisms to customize locality related behaviors. Now that the basic framework for more flexible locality support is in place, this is a good time to improve the situation. This patch adds tools/workqueues/wq_dump.py which prints out the topology configuration, worker pools and how workqueues are mapped to pools. Read the command's help message for more details. Signed-off-by: Tejun Heo <tj@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 Restructured Text 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.