vmlinux.lds.h: Fix incomplete .text.exit discards
authorPeter Oberparleiter <oberpar@linux.ibm.com>
Thu, 13 Sep 2018 10:59:59 +0000 (12:59 +0200)
committerStephen Rothwell <sfr@canb.auug.org.au>
Thu, 11 Oct 2018 21:54:58 +0000 (08:54 +1100)
commit8dcf86caa1e3daf4a6ccf38e97f4f752b411f829
treeae7b52e3e4b92eb90fbe745d75550a54c034292b
parent0778a9f2dd924c3af41971ba40eec44793aea531
vmlinux.lds.h: Fix incomplete .text.exit discards

Enabling CONFIG_GCOV_PROFILE_ALL=y causes linker errors on ARM:

  `.text.exit' referenced in section `.ARM.exidx.text.exit':
  defined in discarded section `.text.exit'

  `.text.exit' referenced in section `.fini_array.00100':
  defined in discarded section `.text.exit'

And related errors on NDS32:

  `.text.exit' referenced in section `.dtors.65435':
  defined in discarded section `.text.exit'

The gcov compiler flags cause certain compiler versions to generate
additional destructor-related sections that are not yet handled by the
linker script, resulting in references between discarded and
non-discarded sections.

Since destructors are not used in the Linux kernel, fix this by
discarding these additional sections.

Reported-by: Arnd Bergmann <arnd@arndb.de>
Tested-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Reported-by: Greentime Hu <green.hu@gmail.com>
Tested-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Peter Oberparleiter <oberpar@linux.ibm.com>
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
arch/arm/kernel/vmlinux.lds.h
include/asm-generic/vmlinux.lds.h