In-Reply-To: <[email protected]>
On Fri, 9 Sep 2005 at 12:14:38 +0100 (BST), Hugh Dickins wrote:
> On Fri, 9 Sep 2005, Andi Kleen wrote:
> >
> > It won't give more accurate backtraces, not even on i386 because show_stack
> > doesn't have any code to follow frame pointers.
>
> Ah, right.
What's this for, then? (arch/i386/kernel/traps.c line 116)
static inline unsigned long print_context_stack(struct thread_info *tinfo,
unsigned long *stack, unsigned long ebp)
{
unsigned long addr;
#ifdef CONFIG_FRAME_POINTER
while (valid_stack_ptr(tinfo, (void *)ebp)) {
addr = *(unsigned long *)(ebp + 4);
printk(" [<%08lx>] ", addr);
print_symbol("%s", addr);
printk("\n");
ebp = *(unsigned long *)ebp;
}
#else
I get nice clean stack traces on i386 with frame pointers enabled and
the kernel is smaller as well.
__
Chuck
Subliminal URL: www.sluggy.com/daily.php?date=050905
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