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| author | Li Zefan <lizf@cn.fujitsu.com> | 2009-08-19 15:54:32 +0800 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-08-19 15:02:24 +0200 |
| commit | e647d6b314266adb904d4b84973eda0afa856946 (patch) | |
| tree | e4f18b57d37a25910b3d19b6c2461f87db0084a3 /kernel/trace/trace_events.c | |
| parent | 14be96c9716cb8c46dca94bd890defd7856e0734 (diff) | |
| download | linux-e647d6b314266adb904d4b84973eda0afa856946.tar.bz2 | |
tracing/events: Add trace_define_common_fields()
Extract duplicate code. Also prepare for the later patch.
Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Cc: Jason Baron <jbaron@redhat.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
LKML-Reference: <4A8BAFB8.1010304@cn.fujitsu.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/trace/trace_events.c')
| -rw-r--r-- | kernel/trace/trace_events.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/kernel/trace/trace_events.c b/kernel/trace/trace_events.c index af8fb8ebef0b..9c7ecfb3416f 100644 --- a/kernel/trace/trace_events.c +++ b/kernel/trace/trace_events.c @@ -62,6 +62,28 @@ err: } EXPORT_SYMBOL_GPL(trace_define_field); +#define __common_field(type, item) \ + ret = trace_define_field(call, #type, "common_" #item, \ + offsetof(typeof(ent), item), \ + sizeof(ent.item), \ + is_signed_type(type)); \ + if (ret) \ + return ret; + +int trace_define_common_fields(struct ftrace_event_call *call) +{ + int ret; + struct trace_entry ent; + + __common_field(unsigned short, type); + __common_field(unsigned char, flags); + __common_field(unsigned char, preempt_count); + __common_field(int, pid); + __common_field(int, tgid); + + return ret; +} + #ifdef CONFIG_MODULES static void trace_destroy_fields(struct ftrace_event_call *call) |