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a637b3bfa4
Make sure to always inline __xchg() and __cmpxchg() otherwise the
compiler might decide to generate out-of-line versions which will
fail at link time:
s390-linux-ld: lib/atomic64_test.o: in function `__xchg':
>> atomic64_test.c:(.text.unlikely+0xa4): undefined reference to `__xchg_called_with_bad_pointer'
Reported-by: kernel test robot <lkp@intel.com>
Link: https://lore.kernel.org/linux-mm/202104170449.SIIFKVjT-lkp@intel.com/
Fixes: d2b1f6d2d3 ("s390/cmpxchg: get rid of gcc atomic builtins")
Signed-off-by: Heiko Carstens <hca@linux.ibm.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.