tree 54ed1587edae13a209f4cd2754ce4487fc3d6376
parent 1bdfd0d9632f0254a4fc01d17c9933ae6107dec4
author Atsushi Nemoto <anemo@mba.ocn.ne.jp> 1139330883 +0900
committer Ralf Baechle <ralf@linux-mips.org> 1139944404 +0000

[MIPS] Rewrite get_wchan and its helper functions using kallsyms_lookup.
    
Implement get_wchan() and frame_info_init() using kallsyms_lookup().
This fixes problem with static sched/lock functions and mfinfo[]
maintenance issue.  If CONFIG_KALLSYMS was disabled, get_wchan() just
returns thread_saved_pc() value.
    
Also unwind stackframe based on "addiu sp,-imm" analysis instead of
frame pointer.  This fixes problem with functions compiled without
-fomit-frame-pointer.
    
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>