diff options
| author | Yafang Shao <laoar.shao@gmail.com> | 2019-03-26 20:13:09 +0800 |
|---|---|---|
| committer | Steven Rostedt (VMware) <rostedt@goodmis.org> | 2019-04-08 09:22:51 -0400 |
| commit | 163363455b42a1cf833742177149d1352dfe673e (patch) | |
| tree | 456d1d7fcd0b6e960f192ee1f25d193de68db280 /include/trace | |
| parent | a8d655792a32312f6715ac789b860fee50168106 (diff) | |
| download | linux-0-day-163363455b42a1cf833742177149d1352dfe673e.tar.gz linux-0-day-163363455b42a1cf833742177149d1352dfe673e.tar.xz | |
tracing: introduce TRACE_EVENT_NOP()
Sometimes we want to define a tracepoint as a do-nothing function.
So I introduce TRACE_EVENT_NOP, DECLARE_EVENT_CLASS_NOP and
DEFINE_EVENT_NOP for this kind of usage.
Link: http://lkml.kernel.org/r/1553602391-11926-2-git-send-email-laoar.shao@gmail.com
Signed-off-by: Yafang Shao <laoar.shao@gmail.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Diffstat (limited to 'include/trace')
| -rw-r--r-- | include/trace/define_trace.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/trace/define_trace.h b/include/trace/define_trace.h index cb30c55321448..bd75f97867b99 100644 --- a/include/trace/define_trace.h +++ b/include/trace/define_trace.h @@ -46,6 +46,12 @@ assign, print, reg, unreg) \ DEFINE_TRACE_FN(name, reg, unreg) +#undef TRACE_EVENT_NOP +#define TRACE_EVENT_NOP(name, proto, args, struct, assign, print) + +#undef DEFINE_EVENT_NOP +#define DEFINE_EVENT_NOP(template, name, proto, args) + #undef DEFINE_EVENT #define DEFINE_EVENT(template, name, proto, args) \ DEFINE_TRACE(name) @@ -102,6 +108,8 @@ #undef TRACE_EVENT_FN #undef TRACE_EVENT_FN_COND #undef TRACE_EVENT_CONDITION +#undef TRACE_EVENT_NOP +#undef DEFINE_EVENT_NOP #undef DECLARE_EVENT_CLASS #undef DEFINE_EVENT #undef DEFINE_EVENT_FN |