From: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Date: Tue, 7 Feb 2006 16:48:03 +0000 (+0900)
Subject: [MIPS] Rewrite get_wchan and its helper functions using kallsyms_lookup.
X-Git-Tag: v2.6.16-rc4~92
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=63077519899721120b61d663a68adced068a459d;p=pandora-kernel.git

[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>
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