tree 002a03fe8e97db3f3a2b07d1d0d27381f80357b9
parent 23126692e30ec22760e0ef932c3c2fff00d440bb
author Atsushi Nemoto <anemo@mba.ocn.ne.jp> 1159520571 +0900
committer Ralf Baechle <ralf@linux-mips.org> 1159741019 +0100

[MIPS] Make unwind_stack() can dig into interrupted context

If the PC was ret_from_irq or ret_from_exception, there will be no
more normal stackframe.  Instead of stopping the unwinding, use PC and
RA saved by an exception handler to continue unwinding into the
interrupted context.  This also simplifies the CONFIG_STACKTRACE code.

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>