[PATCH] powerpc: export validate_sp for oprofile calltrace
From: Anton Blanchard <hidden>
Date: 2006-03-27 00:46:18
Export validate_sp so we can use it in the oprofile calltrace code. Signed-off-by: Anton Blanchard <redacted> --- Index: build/arch/powerpc/kernel/process.c ===================================================================
--- build.orig/arch/powerpc/kernel/process.c 2006-03-26 10:39:29.000000000 +1000
+++ build/arch/powerpc/kernel/process.c 2006-03-26 12:48:03.000000000 +1000@@ -767,7 +767,7 @@ 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);
@@ -805,6 +805,8 @@ static int validate_sp(unsigned long sp, #define FRAME_MARKER 2 #endif +EXPORT_SYMBOL(validate_sp); + unsigned long get_wchan(struct task_struct *p) { unsigned long ip, sp;
Index: build/include/asm-powerpc/processor.h ===================================================================
--- build.orig/include/asm-powerpc/processor.h 2006-03-24 15:51:22.000000000 +1100
+++ build/include/asm-powerpc/processor.h 2006-03-26 12:48:03.000000000 +1000@@ -251,6 +251,10 @@ static inline unsigned long __pack_fe01( #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. */