From: Johannes Weiner <jw@emlix.com>
Date: Wed, 4 Mar 2009 15:21:29 +0000 (+0100)
Subject: xtensa: use correct stack pointer for stack traces
X-Git-Tag: v2.6.30-rc1~221^2~19
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=28a0ce7f642f503dde866f763e8144a517fdf74a;p=pandora-kernel.git

xtensa: use correct stack pointer for stack traces

Right now, the xtensa stacktrace code reads the _current_ kernel stack
pointer if nothing is supplied.  With debugging facilities like sysrq
this means that the backtrace of the sysrq-handler is printed instead
of a trace of the given task's stack.

When no stack pointer is specified in show_trace() and show_stack(),
use the stack pointer that comes with the handed in task descriptor to
make stack traces more useful.

Signed-off-by: Johannes Weiner <jw@emlix.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
---

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