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| author | Steven Rostedt <srostedt@redhat.com> | 2012-08-10 02:26:46 (GMT) |
|---|---|---|
| committer | Steven Rostedt <rostedt@goodmis.org> | 2014-03-07 15:06:06 (GMT) |
| commit | 35bb4399bd0ef16b8a57fccea0047d98b6b0e7fb (patch) | |
| tree | 16b340bd7b6d1e17e9d78d7d3ea88141cf2e3905 /kernel/trace/trace_events.c | |
| parent | 1d6bae966e90134bcfd7807b8f9488d55198de91 (diff) | |
| download | linux-35bb4399bd0ef16b8a57fccea0047d98b6b0e7fb.tar.xz | |
tracing: Move event storage for array from macro to standalone function
The code that shows array fields for events is defined for all events.
This can add up quite a bit when you have over 500 events.
By making helper functions in the core kernel to do the work
instead, we can shrink the size of the kernel down a bit.
With a kernel configured with 502 events, the change in size was:
text data bss dec hex filename
12990946 1913568 9785344 24689858 178bcc2 /tmp/vmlinux
12987390 1913504 9785344 24686238 178ae9e /tmp/vmlinux.patched
That's a total of 3556 bytes, which comes down to 7 bytes per event.
Although it's not much, this code is just called at initialization of
the events.
Link: http://lkml.kernel.org/r/20120810034708.084036335@goodmis.org
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'kernel/trace/trace_events.c')
| -rw-r--r-- | kernel/trace/trace_events.c | 6 |
1 files changed, 0 insertions, 6 deletions
diff --git a/kernel/trace/trace_events.c b/kernel/trace/trace_events.c index e71ffd4..22826c7 100644 --- a/kernel/trace/trace_events.c +++ b/kernel/trace/trace_events.c @@ -27,12 +27,6 @@ DEFINE_MUTEX(event_mutex); -DEFINE_MUTEX(event_storage_mutex); -EXPORT_SYMBOL_GPL(event_storage_mutex); - -char event_storage[EVENT_STORAGE_SIZE]; -EXPORT_SYMBOL_GPL(event_storage); - LIST_HEAD(ftrace_events); static LIST_HEAD(ftrace_common_fields); |