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[MIPS] Simplify dump_stack() 

Make dump_stack() code not depend on CONFIG_KALLSYMS.

It also make prepare_frametrace() always inlined to get
less false entries reported by show_raw_backtrace().

Signed-off-by: Franck Bui-Huu <vagabon.xyz@gmail.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
hifive-unleashed-5.1
Franck Bui-Huu 2006-08-03 09:29:19 +02:00 committed by Ralf Baechle
parent 6057a79876
commit 1666a6fc73
1 changed files with 9 additions and 11 deletions
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20
arch/mips/kernel/traps.c
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@ -158,7 +158,7 @@ static void show_stacktrace(struct task_struct *task, struct pt_regs *regs)
show_backtrace(task, regs);
}
static noinline void prepare_frametrace(struct pt_regs *regs)
static __always_inline void prepare_frametrace(struct pt_regs *regs)
{
__asm__ __volatile__(
"1: la $2, 1b\n\t"
@ -200,17 +200,15 @@ void show_stack(struct task_struct *task, unsigned long *sp)
*/
void dump_stack(void)
{
unsigned long stack;
struct pt_regs regs;
#ifdef CONFIG_KALLSYMS
if (!raw_show_trace) {
struct pt_regs regs;
prepare_frametrace(&regs);
show_backtrace(current, &regs);
return;
}
#endif
show_raw_backtrace(&stack);
/*
* Remove any garbage that may be in regs (specially func
* addresses) to avoid show_raw_backtrace() to report them
*/
memset(&regs, 0, sizeof(regs));
prepare_frametrace(&regs);
show_backtrace(current, &regs);
}
EXPORT_SYMBOL(dump_stack);