]> git.karo-electronics.de Git - linux-beck.git/commit
tracing/events: change the type of __str_loc_item to unsigned short
authorLi Zefan <lizf@cn.fujitsu.com>
Thu, 21 May 2009 05:59:18 +0000 (13:59 +0800)
committerFrederic Weisbecker <fweisbec@gmail.com>
Mon, 25 May 2009 22:15:21 +0000 (00:15 +0200)
commitb0aae68cc5508f3c2fbf728988c954db4c8b8a53
treeaf1253c54cf3edc83806acab14a60d1529e81709
parent4f5359685af6de7dca101393dc606620adbe963f
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>
include/trace/ftrace.h