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binfmt_elf: compat: avoid unused function warning 

When CONFIG_ELF_CORE is disabled, we get a harmless warning in the compat
version of binfmt_elf:

fs/compat_binfmt_elf.c:58:13: error: 'cputime_to_compat_timeval' defined but not used [-Werror=unused-function]

This was addressed in mainline Linux as part of a larger rework with commit
cd19c364b3 ("fs/binfmt: Convert obsolete cputime type to nsecs").

For 4.9 and earlier, this just shuts up the warning by adding an #ifdef
around the function definition.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Arnd Bergmann 2018-02-19 11:13:23 +01:00 committed by Greg Kroah-Hartman
parent 5fe7514013
commit 890c52ab3d
1 changed files with 2 additions and 0 deletions
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2
fs/compat_binfmt_elf.c
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@ -51,6 +51,7 @@
#define elf_prstatus compat_elf_prstatus
#define elf_prpsinfo compat_elf_prpsinfo
#ifdef CONFIG_ELF_CORE
/*
* Compat version of cputime_to_compat_timeval, perhaps this
* should be an inline in <linux/compat.h>.
@ -63,6 +64,7 @@ static void cputime_to_compat_timeval(const cputime_t cputime,
value->tv_sec = tv.tv_sec;
value->tv_usec = tv.tv_usec;
}
#endif
#undef cputime_to_timeval
#define cputime_to_timeval cputime_to_compat_timeval