diff options
| author |   Jan Blunck <jblunck@suse.de> | 2007-10-19 20:35:04 +0200 |
|---|---|---|
| committer |   Thomas Gleixner <tglx@linutronix.de> | 2007-10-19 20:35:04 +0200 |
| commit | f1df280f53d7c3ce8613a3b25d1efe009b9860dd (patch) | |
| tree | 7b9d6d837355bd913fb5b41017556f1137adee18 /arch/x86 | |
| parent | x86 & generic: change to __builtin_prefetch() (diff) | |
| download | linux-dev-f1df280f53d7c3ce8613a3b25d1efe009b9860dd.tar.xz linux-dev-f1df280f53d7c3ce8613a3b25d1efe009b9860dd.zip | |
x86: introduce frame_pointer() and stack_pointer()
This patch defines frame_pointer() and stack_pointer() similar to the
already defined instruction_pointer(). Thus the oprofile code can be
written in a more readable fashion.
[ tglx: arch/x86 adaptation ]
Signed-off-by: Jan Blunck <jblunck@suse.de>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/oprofile/backtrace.c | 12 |
1 files changed, 2 insertions, 10 deletions
diff --git a/arch/x86/oprofile/backtrace.c b/arch/x86/oprofile/backtrace.c index dc59a808009f..0ed046a187f7 100644 --- a/arch/x86/oprofile/backtrace.c +++ b/arch/x86/oprofile/backtrace.c @@ -76,16 +76,8 @@ dump_user_backtrace(struct frame_head * head) void x86_backtrace(struct pt_regs * const regs, unsigned int depth) { - struct frame_head *head; - unsigned long stack; - -#ifdef CONFIG_X86_64 - head = (struct frame_head *)regs->rbp; - stack = regs->rsp; -#else - head = (struct frame_head *)regs->ebp; - stack = regs->esp; -#endif + struct frame_head *head = (struct frame_head *)frame_pointer(regs); + unsigned long stack = stack_pointer(regs); if (!user_mode_vm(regs)) { if (depth) |