52c8ee5bad
Enabling both CONFIG_LD_DEAD_CODE_DATA_ELIMINATION=y and CONFIG_GCOV_PROFILE_ALL=y results in linker warnings: warning: orphan section `.data..LPBX1' being placed in section `.data..LPBX1'. LD_DEAD_CODE_DATA_ELIMINATION adds compiler flag -fdata-sections. This option causes GCC to create separate data sections for data objects, including those generated by GCC internally for gcov profiling. The names of these objects start with a dot (.LPBX0, .LPBX1), resulting in section names starting with 'data..'. As section names starting with 'data..' are used for specific purposes in the Linux kernel, the linker script does not automatically include them in the output data section, resulting in the "orphan section" linker warnings. Fix this by specifically including sections named "data..LPBX*" in the data section. Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Tested-by: Stephen Rothwell <sfr@canb.auug.org.au> Tested-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Peter Oberparleiter <oberpar@linux.ibm.com> Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.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.
See Documentation/00-INDEX for a list of what is contained in each file.
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.