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authorCatalin Marinas <catalin.marinas@arm.com>2009-02-11 13:07:53 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2009-02-12 13:21:17 +0000
commit2d7c11bfc91637e5f9bc5f8c9a82aaffcc0e97aa (patch)
tree0bb67dae38b1185089b6c9813769689cb79c5ee3 /arch/arm/oprofile
parent67a94c23bb7338c321ae71aa33f8d398c94e1d0c (diff)
downloadlinux-linaro-stable-2d7c11bfc91637e5f9bc5f8c9a82aaffcc0e97aa.tar.gz
[ARM] 5382/1: unwind: Reorganise the stacktrace support
This patch changes the walk_stacktrace and its callers for easier integration of stack unwinding. The arch/arm/kernel/stacktrace.h file is also moved to arch/arm/include/asm/stacktrace.h. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/oprofile')
-rw-r--r--arch/arm/oprofile/backtrace.c14
1 files changed, 8 insertions, 6 deletions
diff --git a/arch/arm/oprofile/backtrace.c b/arch/arm/oprofile/backtrace.c
index cefc21c2eee4..d805a52b5032 100644
--- a/arch/arm/oprofile/backtrace.c
+++ b/arch/arm/oprofile/backtrace.c
@@ -18,15 +18,14 @@
#include <linux/mm.h>
#include <linux/uaccess.h>
#include <asm/ptrace.h>
-
-#include "../kernel/stacktrace.h"
+#include <asm/stacktrace.h>
static int report_trace(struct stackframe *frame, void *d)
{
unsigned int *depth = d;
if (*depth) {
- oprofile_add_trace(frame->lr);
+ oprofile_add_trace(frame->pc);
(*depth)--;
}
@@ -70,9 +69,12 @@ void arm_backtrace(struct pt_regs * const regs, unsigned int depth)
struct frame_tail *tail = ((struct frame_tail *) regs->ARM_fp) - 1;
if (!user_mode(regs)) {
- unsigned long base = ((unsigned long)regs) & ~(THREAD_SIZE - 1);
- walk_stackframe(regs->ARM_fp, base, base + THREAD_SIZE,
- report_trace, &depth);
+ struct stackframe frame;
+ frame.fp = regs->ARM_fp;
+ frame.sp = regs->ARM_sp;
+ frame.lr = regs->ARM_lr;
+ frame.pc = regs->ARM_pc;
+ walk_stackframe(&frame, report_trace, &depth);
return;
}