| commit | 7bffc23e56e92c14b787bf4d95249a32085bfed5 | [log] [tgz] |
|---|---|---|
| author | Ingo Molnar <mingo@elte.hu> | Mon Mar 09 10:11:36 2009 +0100 |
| committer | Ingo Molnar <mingo@elte.hu> | Mon Mar 09 10:11:36 2009 +0100 |
| tree | 9c1bbea2f258c82b5a9ff5e30db3a8f0c9cc3faa | |
| parent | 8a20d84d09ab5d121f989cd99e4fc5f4b49f98ba [diff] |
tracing: optimize trace_printk() Impact: micro-optimization trace_printk() does this unconditionally: trace_printk_fmt = fmt; Where trace_printk_fmt is an entry into a global array. This is very SMP-unfriendly. So only write it once per bootup. Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Peter Zijlstra <peterz@infradead.org> LKML-Reference: <1236356510-8381-5-git-send-email-fweisbec@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>