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64fdcbcc06
Add an IS_ENABLED() check to fix the build error:
arch/powerpc/kernel/prom.o: in function `early_init_dt_scan_cpus':
prom.c:(.init.text+0x2ea): undefined reference to `boot_cpu_node_count'
Fixes: e13d23a404 ("powerpc: export the CPU node count")
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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.