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f4bb570511
find_new_ilb() returns nr_cpu_ids on failure - which is the usual cpumask bitops return pattern, but is weird & unnecessary in this context: not only is it a global variable, it it is a +1 out of bounds CPU index and also has different signedness ... Its only user, kick_ilb(), then checks the return against nr_cpu_ids to decide to return. There's no other use. So instead of this, use a standard -1 return on failure to find an idle CPU, as the argument is signed already. Signed-off-by: Ingo Molnar <mingo@kernel.org> Reviewed-by: Joel Fernandes (Google) <joel@joelfernandes.org> Link: https://lore.kernel.org/r/20231006102518.2452758-4-mingo@kernel.org |
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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 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.