From: Michal Simek <monstr@monstr.eu>
Date: Mon, 7 May 2012 12:21:02 +0000 (+0200)
Subject: microblaze: ftrace: Pass the first calling instruction for dynamic ftrace
X-Git-Tag: v3.5-rc1~61^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d65987a88dc8b182ef933edf93c23cf4233dd8d5;p=pandora-kernel.git

microblaze: ftrace: Pass the first calling instruction for dynamic ftrace

Selftest for dynamic ftrace requres to pass address of the first
calling instruction because hash function is calculated from it.

ftrace_update_ftrace_func setups pointer to function which is called
in _mcount function. trace_selftest is not aware about instruction
size (for microblaze 8 - imm and addik) and that's why we have
to pass in r5 address of imm not addik which is in r15.12

For more info look at ftrace_ops_list_func/ftrace.c.

Signed-off-by: Michal Simek <monstr@monstr.eu>
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