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init_cfs_bandwidth() is only used when CONFIG_FAIR_GROUP_SCHED is enabled, and without this causes a W=1 warning for the missing prototype: kernel/sched/fair.c:6131:6: error: no previous prototype for 'init_cfs_bandwidth' The normal implementation is only defined for CONFIG_CFS_BANDWIDTH, so the stub exists when CFS_BANDWIDTH is disabled but FAIR_GROUP_SCHED is enabled. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Vincent Guittot <vincent.guittot@linaro.org> Link: https://lore.kernel.org/r/20230522195021.3456768-4-arnd@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.