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tracing/events: Add trace_define_common_fields()

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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>
This commit is contained in:
Li Zefan
2009-08-19 15:54:32 +08:00
committed by Ingo Molnar
parent 14be96c971
commit e647d6b314
4 changed files with 29 additions and 17 deletions
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22
kernel/trace/trace_events.c
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@ -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)