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The sparse tool complains as follows: arch/powerpc/kernel/smp.c:86:1: warning: symbol '__pcpu_scope_cpu_coregroup_map' was not declared. Should it be static? arch/powerpc/kernel/smp.c:125:1: warning: symbol '__pcpu_scope_thread_group_l1_cache_map' was not declared. Should it be static? arch/powerpc/kernel/smp.c:132:1: warning: symbol '__pcpu_scope_thread_group_l2_cache_map' was not declared. Should it be static? These symbols are not used outside of smp.c, so this commit marks them static. Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Yu Kuai <yukuai3@huawei.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210407125903.4139663-1-yukuai3@huawei.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 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.