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powerpc/ftrace: Add prototype for prepare_ftrace_return()

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Sparse emits a warning: symbol 'prepare_ftrace_return' was not
declared. Should it be static? prepare_ftrace_return() is called from
assembler and should not be static.

Add a prototype for it to asm-prototypes.h and include that in ftrace.c.

Signed-off-by: Tobin C. Harding <me@tobin.cc>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Tobin C. Harding 2017-03-06 19:49:46 +11:00 committed by Michael Ellerman
parent 1fc439c813
commit b3a7864c6f
2 changed files with 3 additions and 0 deletions
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2
arch/powerpc/include/asm/asm-prototypes.h
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@ -120,6 +120,8 @@ extern s64 __ashrdi3(s64, int);
extern int __cmpdi2(s64, s64);
extern int __ucmpdi2(u64, u64);
/* tracing */
void _mcount(void);
unsigned long prepare_ftrace_return(unsigned long parent, unsigned long ip);
#endif /* _ASM_POWERPC_ASM_PROTOTYPES_H */

1
arch/powerpc/kernel/ftrace.c
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@ -21,6 +21,7 @@
#include <linux/init.h>
#include <linux/list.h>
#include <asm/asm-prototypes.h>
#include <asm/cacheflush.h>
#include <asm/code-patching.h>
#include <asm/ftrace.h>