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CONFIG_HOTPLUG_PARALLEL expects the architecture to implement arch_cpuhp_init_parallel_bringup() to decide whether paralllel hotplug is possible and to do the necessary architecture specific initialization. There are architectures which can enable it unconditionally and do not require architecture specific initialization. Provide a weak fallback for arch_cpuhp_init_parallel_bringup() so that such architectures are not forced to implement empty stub functions. Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/all/20240716-loongarch-hotplug-v3-2-af59b3bb35c8@flygoat.com
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.