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authorIngo Molnar <mingo@elte.hu>2011-07-04 12:27:28 +0200
committerIngo Molnar <mingo@elte.hu>2011-07-04 12:27:28 +0200
commit9f8b6a6cf0ee78de87ebe1e87f54bec1c1741ef7 (patch)
tree083e4b99c53ea1bd3efb35286ebeb5a335fd555e /arch/mips/kernel
parent729aa21ab85b5d24f3c2b1e581d71c2333f46628 (diff)
parenta406ab6d77ea86ba7c713276f30ed7058ca64e31 (diff)
downloadop-kernel-dev-9f8b6a6cf0ee78de87ebe1e87f54bec1c1741ef7.zip
op-kernel-dev-9f8b6a6cf0ee78de87ebe1e87f54bec1c1741ef7.tar.gz
Merge branch 'core' of git://git.kernel.org/pub/scm/linux/kernel/git/rric/oprofile into perf/core
Diffstat (limited to 'arch/mips/kernel')
-rw-r--r--arch/mips/kernel/process.c19
1 files changed, 14 insertions, 5 deletions
diff --git a/arch/mips/kernel/process.c b/arch/mips/kernel/process.c
index d2112d3..c28fbe6 100644
--- a/arch/mips/kernel/process.c
+++ b/arch/mips/kernel/process.c
@@ -373,18 +373,18 @@ unsigned long thread_saved_pc(struct task_struct *tsk)
#ifdef CONFIG_KALLSYMS
-/* used by show_backtrace() */
-unsigned long unwind_stack(struct task_struct *task, unsigned long *sp,
- unsigned long pc, unsigned long *ra)
+/* generic stack unwinding function */
+unsigned long notrace unwind_stack_by_address(unsigned long stack_page,
+ unsigned long *sp,
+ unsigned long pc,
+ unsigned long *ra)
{
- unsigned long stack_page;
struct mips_frame_info info;
unsigned long size, ofs;
int leaf;
extern void ret_from_irq(void);
extern void ret_from_exception(void);
- stack_page = (unsigned long)task_stack_page(task);
if (!stack_page)
return 0;
@@ -443,6 +443,15 @@ unsigned long unwind_stack(struct task_struct *task, unsigned long *sp,
*ra = 0;
return __kernel_text_address(pc) ? pc : 0;
}
+EXPORT_SYMBOL(unwind_stack_by_address);
+
+/* used by show_backtrace() */
+unsigned long unwind_stack(struct task_struct *task, unsigned long *sp,
+ unsigned long pc, unsigned long *ra)
+{
+ unsigned long stack_page = (unsigned long)task_stack_page(task);
+ return unwind_stack_by_address(stack_page, sp, pc, ra);
+}
#endif
/*
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