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x86/kbuild: enable modversions for symbols exported from asm

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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 <[email protected]>
Tested-by: Kalle Valo <[email protected]>
Acked-by: Nicholas Piggin <[email protected]>
Tested-by: Peter Wu <[email protected]>
Tested-by: Oliver Hartkopp <[email protected]>
Signed-off-by: Michal Marek <[email protected]>
This commit is contained in:
Adam Borowski authored and Michal Marek committed 2016-12-14 00:35:35 +01:00
1 parent d073472ac2
commit 334bb77387
2 files changed
+23
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arch/x86/include/asm/asm-prototypes.h
+16
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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
include/asm-generic/asm-prototypes.h
+7
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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);