From: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Date: Thu, 23 Aug 2012 21:27:09 +0000 (+0000)
Subject: powerpc: Add trap_nr to thread_struct
X-Git-Tag: omap-for-v3.7-rc1/fixes-cpufreq-signed~10^2~91
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=41ab5266c3622354353433618edb92ab278025fa;p=pandora-kernel.git

powerpc: Add trap_nr to thread_struct

Add thread_struct.trap_nr and use it to store the last exception
the thread experienced. In this patch, we populate the field at
various places where we force_sig_info() to the process.

This is also used in uprobes to determine if the probed instruction
caused an exception.

Signed-off-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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