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x86/kbuild: enable modversions for symbols exported from asm 

Commit 4efca4ed ("kbuild: modversions for EXPORT_SYMBOL() for asm") adds
modversion support for symbols exported from asm files. Architectures
must include C-style declarations for those symbols in asm/asm-prototypes.h
in order for them to be versioned.

Add these declarations for x86, and an architecture-independent file that
can be used for common symbols.

With f27c2f6 reverting 8ab2ae6 ("default exported asm symbols to zero") we
produce a scary warning on x86, this commit fixes that.

Signed-off-by: Adam Borowski <kilobyte@angband.pl>
Tested-by: Kalle Valo <kvalo@codeaurora.org>
Acked-by: Nicholas Piggin <npiggin@gmail.com>
Tested-by: Peter Wu <peter@lekensteyn.nl>
Tested-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Michal Marek <mmarek@suse.com>
This commit is contained in:
Adam Borowski 2016-12-11 02:09:18 +01:00 committed by Michal Marek
parent d073472ac2
commit 334bb77387
2 changed files with 23 additions and 0 deletions
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16
arch/x86/include/asm/asm-prototypes.h Normal file
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@ -0,0 +1,16 @@
#include <asm/ftrace.h>
#include <asm/uaccess.h>
#include <asm/string.h>
#include <asm/page.h>
#include <asm/checksum.h>
#include <asm-generic/asm-prototypes.h>
#include <asm/page.h>
#include <asm/pgtable.h>
#include <asm/special_insns.h>
#include <asm/preempt.h>
#ifndef CONFIG_X86_CMPXCHG64
extern void cmpxchg8b_emu(void);
#endif

7
include/asm-generic/asm-prototypes.h Normal file
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@ -0,0 +1,7 @@
#include <linux/bitops.h>
extern void *__memset(void *, int, __kernel_size_t);
extern void *__memcpy(void *, const void *, __kernel_size_t);
extern void *__memmove(void *, const void *, __kernel_size_t);
extern void *memset(void *, int, __kernel_size_t);
extern void *memcpy(void *, const void *, __kernel_size_t);
extern void *memmove(void *, const void *, __kernel_size_t);