diff options
| -rw-r--r-- | arch/powerpc/kernel/process.c | 4 | ||||
| -rw-r--r-- | include/asm-powerpc/processor.h | 4 |
2 files changed, 7 insertions, 1 deletions
diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c index c6e81bbd615cb3..706090c99f47c5 100644 --- a/arch/powerpc/kernel/process.c +++ b/arch/powerpc/kernel/process.c @@ -770,7 +770,7 @@ out: return error; } -static int validate_sp(unsigned long sp, struct task_struct *p, +int validate_sp(unsigned long sp, struct task_struct *p, unsigned long nbytes) { unsigned long stack_page = (unsigned long)task_stack_page(p); @@ -808,6 +808,8 @@ static int validate_sp(unsigned long sp, struct task_struct *p, #define FRAME_MARKER 2 #endif +EXPORT_SYMBOL(validate_sp); + unsigned long get_wchan(struct task_struct *p) { unsigned long ip, sp; diff --git a/include/asm-powerpc/processor.h b/include/asm-powerpc/processor.h index a64198fcfd0212..57643b5b782ff5 100644 --- a/include/asm-powerpc/processor.h +++ b/include/asm-powerpc/processor.h @@ -251,6 +251,10 @@ static inline unsigned long __pack_fe01(unsigned int fpmode) #define cpu_relax() barrier() #endif +/* Check that a certain kernel stack pointer is valid in task_struct p */ +int validate_sp(unsigned long sp, struct task_struct *p, + unsigned long nbytes); + /* * Prefetch macros. */ |