diff options
| author | Jason Baron <jbaron@redhat.com> | 2010-09-17 17:08:56 +0200 |
|---|---|---|
| committer | Steven Rostedt <rostedt@goodmis.org> | 2010-09-21 00:19:51 +0200 |
| commit | fa6f2cc77081792e4edca9168420a3422299ef15 (patch) | |
| tree | a37b9019a0017ba13585447392f0c98b2f7cb51b | |
| parent | jump label: Make dynamic no-op selection available outside of ftrace (diff) | |
| download | linux-fa6f2cc77081792e4edca9168420a3422299ef15.tar.xz linux-fa6f2cc77081792e4edca9168420a3422299ef15.zip | |
jump label: Make text_poke_early() globally visible
Make text_poke_early available outside of alternative.c. The jump label
patchset wants to make use of it in order to set up the optimal no-op
sequences at run-time.
Signed-off-by: Jason Baron <jbaron@redhat.com>
LKML-Reference: <04cfddf2ba77bcabfc3e524f1849d871d6a1cf9d.1284733808.git.jbaron@redhat.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
| -rw-r--r-- | arch/x86/include/asm/alternative.h | 2 | ||||
| -rw-r--r-- | arch/x86/kernel/alternative.c | 4 |
2 files changed, 4 insertions, 2 deletions
diff --git a/arch/x86/include/asm/alternative.h b/arch/x86/include/asm/alternative.h index 27a35b689180..634bf782dca5 100644 --- a/arch/x86/include/asm/alternative.h +++ b/arch/x86/include/asm/alternative.h @@ -160,6 +160,8 @@ static inline void apply_paravirt(struct paravirt_patch_site *start, #define __parainstructions_end NULL #endif +extern void *text_poke_early(void *addr, const void *opcode, size_t len); + /* * Clear and restore the kernel write-protection flag on the local CPU. * Allows the kernel to edit read-only pages. diff --git a/arch/x86/kernel/alternative.c b/arch/x86/kernel/alternative.c index 1849d8036ee8..083bd010d92c 100644 --- a/arch/x86/kernel/alternative.c +++ b/arch/x86/kernel/alternative.c @@ -195,7 +195,7 @@ static void __init_or_module add_nops(void *insns, unsigned int len) extern struct alt_instr __alt_instructions[], __alt_instructions_end[]; extern s32 __smp_locks[], __smp_locks_end[]; -static void *text_poke_early(void *addr, const void *opcode, size_t len); +void *text_poke_early(void *addr, const void *opcode, size_t len); /* Replace instructions with better alternatives for this CPU type. This runs before SMP is initialized to avoid SMP problems with @@ -522,7 +522,7 @@ void __init alternative_instructions(void) * instructions. And on the local CPU you need to be protected again NMI or MCE * handlers seeing an inconsistent instruction while you patch. */ -static void *__init_or_module text_poke_early(void *addr, const void *opcode, +void *__init_or_module text_poke_early(void *addr, const void *opcode, size_t len) { unsigned long flags; |