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The condition is supposed to check whether 'allocated_mask' got fully exhausted, i.e. there's no free CPU on the NUMA node left so we have to use one of the already used CPUs. As only bits which correspond to CPUs from 'cpumask_of_node(numa_node)' get set in 'allocated_mask', checking for the equal weights is technically correct but not obvious. Let's compare cpumasks directly. No functional change intended. Suggested-by: Michael Kelley <mikelley@microsoft.com> Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com> Reviewed-by: Michael Kelley <mikelley@microsoft.com> Link: https://lore.kernel.org/r/20220128103412.3033736-3-vkuznets@redhat.com Signed-off-by: Wei Liu <wei.liu@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.