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>
show_backtrace(task, 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"
{
__asm__ __volatile__(
"1: la $2, 1b\n\t"
*/
void dump_stack(void)
{
*/
void dump_stack(void)
{
-#ifdef CONFIG_KALLSYMS
- if (!raw_show_trace) {
- struct pt_regs regs;
- prepare_frametrace(®s);
- show_backtrace(current, ®s);
- 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(®s, 0, sizeof(regs));
+ prepare_frametrace(®s);
+ show_backtrace(current, ®s);
}
EXPORT_SYMBOL(dump_stack);
}
EXPORT_SYMBOL(dump_stack);