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tracing: Use class->reg() for all registering of events

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Because kprobes and syscalls need special processing to register
events, the class->reg() method was created to handle the differences.

But instead of creating a default ->reg for perf and ftrace events,
the code was scattered with:

	if (class->reg)
		class->reg();
	else
		default_reg();

This is messy and can also lead to bugs.

This patch cleans up this code and creates a default reg() entry for
the events allowing for the code to directly call the class->reg()
without the condition.

Reported-by: Peter Zijlstra <peterz@infradead.org>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
This commit is contained in:
Steven Rostedt 2010-06-08 11:22:06 -04:00 • committed by Steven Rostedt
commit a1d0ce8213
4 changed files with 44 additions and 35 deletions
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3
include/linux/ftrace_event.h
View file

@ -146,6 +146,9 @@ struct ftrace_event_class {
int (*raw_init)(struct ftrace_event_call *);
};
extern int ftrace_event_reg(struct ftrace_event_call *event,
enum trace_reg type);
enum {
TRACE_EVENT_FL_ENABLED_BIT,
TRACE_EVENT_FL_FILTERED_BIT,