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d4742f6ed7
For hotplug operations, DEADLINE needs to check that there is still enough bandwidth left after removing the CPU that is going offline. We however fail to do so currently. Restore the correct behavior by restructuring dl_bw_manage() a bit, so that overflow conditions (not enough bandwidth left) are properly checked. Also account for dl_server bandwidth, i.e. discount such bandwidth in the calculation since NORMAL tasks will be anyway moved away from the CPU as a result of the hotplug operation. Signed-off-by: Juri Lelli <juri.lelli@redhat.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Phil Auld <pauld@redhat.com> Tested-by: Waiman Long <longman@redhat.com> Link: https://lore.kernel.org/r/20241114142810.794657-3-juri.lelli@redhat.com |
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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.