From: Li Zefan <lizf@cn.fujitsu.com>
Date: Thu, 21 May 2009 05:59:18 +0000 (+0800)
Subject: tracing/events: change the type of __str_loc_item to unsigned short
X-Git-Tag: v2.6.31-rc1~401^2~32
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b0aae68cc5508f3c2fbf728988c954db4c8b8a53;p=pandora-kernel.git

tracing/events: change the type of __str_loc_item to unsigned short

When defining a dynamic size string, we add __str_loc_##item to the
trace entry, and it stores the location of the actual string in
entry->_str_data[]

'unsigned short' should be sufficient to store this information, thus
we save 2 bytes per dyn-size string in the ring buffer.

[ Impact: reduce memory occupied by dyn-size strings in ring buffer ]

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
LKML-Reference: <4A14EDB6.2050507@cn.fujitsu.com>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
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