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[ Upstream commit f38ce0209ab4553906b44bd1159e35c740a84161 ] small_const_nbits is defined in asm-generic/bitsperlong.h which bitmap.h uses but doesn't include causing build failures in some build systems. Add the missing #include. Note the bitmap.h in tools has diverged from that of the kernel, so no changes are made there. Signed-off-by: Ian Rogers <irogers@google.com> Acked-by: Yury Norov <yury.norov@gmail.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: André Almeida <andrealmeid@igalia.com> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: Darren Hart <dvhart@infradead.org> Cc: David S. Miller <davem@davemloft.net> Cc: Davidlohr Bueso <dave@stgolabs.net> Cc: Ido Schimmel <idosch@nvidia.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jakub Kicinski <kuba@kernel.org> Cc: Jamal Hadi Salim <jhs@mojatatu.com> Cc: Jason Xing <kerneljasonxing@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Jonas Gottlieb <jonas.gottlieb@stackit.cloud> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Maurice Lambert <mauricelambert434@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paolo Abeni <pabeni@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Petr Machata <petrm@nvidia.com> Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Yuyang Huang <yuyanghuang@google.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Sasha Levin <sashal@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.