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| author | Jason Baron <jbaron@redhat.com> | 2010-09-17 11:08:51 -0400 |
|---|---|---|
| committer | Steven Rostedt <rostedt@goodmis.org> | 2010-09-20 18:19:39 -0400 |
| commit | f49aa448561fe9215f43405cac6f31eb86317792 (patch) | |
| tree | c048d03e49cd20a0183ac173bd30893f8adcf91e /arch/x86/include/asm/alternative.h | |
| parent | e9d2b064149ff7ef4acbc65a1b9374ac8b218d3e (diff) | |
| download | linux-f49aa448561fe9215f43405cac6f31eb86317792.tar.gz linux-f49aa448561fe9215f43405cac6f31eb86317792.tar.bz2 linux-f49aa448561fe9215f43405cac6f31eb86317792.zip | |
jump label: Make dynamic no-op selection available outside of ftrace
Move Steve's code for finding the best 5-byte no-op from ftrace.c to
alternative.c. The idea is that other consumers (in this case jump label)
want to make use of that code.
Signed-off-by: Jason Baron <jbaron@redhat.com>
LKML-Reference: <96259ae74172dcac99c0020c249743c523a92e18.1284733808.git.jbaron@redhat.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'arch/x86/include/asm/alternative.h')
| -rw-r--r-- | arch/x86/include/asm/alternative.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/x86/include/asm/alternative.h b/arch/x86/include/asm/alternative.h index bc6abb7bc7ee..27a35b689180 100644 --- a/arch/x86/include/asm/alternative.h +++ b/arch/x86/include/asm/alternative.h @@ -180,4 +180,12 @@ static inline void apply_paravirt(struct paravirt_patch_site *start, extern void *text_poke(void *addr, const void *opcode, size_t len); extern void *text_poke_smp(void *addr, const void *opcode, size_t len); +#if defined(CONFIG_DYNAMIC_FTRACE) +#define IDEAL_NOP_SIZE_5 5 +extern unsigned char ideal_nop5[IDEAL_NOP_SIZE_5]; +extern void arch_init_ideal_nop5(void); +#else +static inline void arch_init_ideal_nop5(void) {} +#endif + #endif /* _ASM_X86_ALTERNATIVE_H */ |