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powerpc: Add a prototype for mcount() so it can be versioned

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Currently we get a warning that _mcount() can't be versioned:

  WARNING: EXPORT symbol "_mcount" [vmlinux] version generation failed, symbol will not be versioned.

Add a prototype to asm-prototypes.h to fix it.

The prototype is not really correct, mcount() is not a normal function,
it has a special ABI. But for the purpose of versioning it doesn't
matter.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Michael Ellerman 2017-02-09 23:55:43 +11:00
parent be9ba9ff93
commit 99ad503287
1 changed files with 2 additions and 0 deletions
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arch/powerpc/include/asm/asm-prototypes.h
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@ -120,4 +120,6 @@ extern s64 __ashrdi3(s64, int);
extern int __cmpdi2(s64, s64);
extern int __ucmpdi2(u64, u64);
void _mcount(void);
#endif /* _ASM_POWERPC_ASM_PROTOTYPES_H */