diff options
| author | Catalin Marinas <catalin.marinas@arm.com> | 2009-02-11 13:07:53 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2009-02-12 13:21:17 +0000 |
| commit | 2d7c11bfc91637e5f9bc5f8c9a82aaffcc0e97aa (patch) | |
| tree | 0bb67dae38b1185089b6c9813769689cb79c5ee3 /arch/arm/oprofile | |
| parent | 67a94c23bb7338c321ae71aa33f8d398c94e1d0c (diff) | |
| download | lwn-2d7c11bfc91637e5f9bc5f8c9a82aaffcc0e97aa.tar.gz lwn-2d7c11bfc91637e5f9bc5f8c9a82aaffcc0e97aa.zip | |
[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.c | 14 |
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; } |