From: Steven Rostedt <srostedt@redhat.com>
Date: Sat, 12 May 2012 03:28:49 +0000 (-0400)
Subject: tracing: Clean up tracing_mark_write()
X-Git-Tag: v3.5-rc1~141^2~17
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6edb2a8a385f0cdef51dae37ff23e74d76d8a6ce;p=pandora-kernel.git

tracing: Clean up tracing_mark_write()

On gcc 4.5 the function tracing_mark_write() would give a warning
of page2 being uninitialized. This is due to a bug in gcc because
the logic prevents page2 from being used uninitialized, and
gcc 4.6+ does not complain (correctly).

Instead of adding a "unitialized" around page2, which could show
a bug later on, I combined page1 and page2 into an array map_pages[].
This binds the two and the two are modified according to nr_pages
(what gcc 4.5 seems to ignore). This no longer gives a warning with
gcc 4.5 nor with gcc 4.6.

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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