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Commit 17c873ec authored by Steven Rostedt's avatar Steven Rostedt Committed by Steven Rostedt
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tracing/events: add export symbols for trace events in modules 



Impact: let modules add trace events

The trace event code requires some functions to be exported to allow
modules to use TRACE_EVENT. This patch adds EXPORT_SYMBOL_GPL to the
necessary functions.

Signed-off-by: default avatarSteven Rostedt <rostedt@goodmis.org>
parent a59fd602

kernel/trace/trace.c

+3 −0
Original line number Diff line number Diff line
@@ -176,6 +176,7 @@ int filter_current_check_discard(struct ftrace_event_call *call, void *rec, 
{

	return filter_check_discard(call, rec, global_trace.buffer, event);

}

EXPORT_SYMBOL_GPL(filter_current_check_discard);



cycle_t ftrace_now(int cpu)

{
@@ -886,6 +887,7 @@ trace_current_buffer_lock_reserve(unsigned char type, unsigned long len, 
	return trace_buffer_lock_reserve(&global_trace,

					 type, len, flags, pc);

}

EXPORT_SYMBOL(trace_current_buffer_lock_reserve);



void trace_current_buffer_unlock_commit(struct ring_buffer_event *event,

					unsigned long flags, int pc)
@@ -903,6 +905,7 @@ void trace_current_buffer_discard_commit(struct ring_buffer_event *event) 
{

	ring_buffer_discard_commit(global_trace.buffer, event);

}

EXPORT_SYMBOL_GPL(trace_nowake_buffer_unlock_commit);



void

trace_function(struct trace_array *tr,

kernel/trace/trace_events.c

+1 −0
Original line number Diff line number Diff line
@@ -53,6 +53,7 @@ err: 


	return -ENOMEM;

}

EXPORT_SYMBOL_GPL(trace_define_field);



static void ftrace_clear_events(void)

{

kernel/trace/trace_events_filter.c

+2 −0
Original line number Diff line number Diff line
@@ -110,6 +110,7 @@ int filter_match_preds(struct ftrace_event_call *call, void *rec) 


	return 1;

}

EXPORT_SYMBOL_GPL(filter_match_preds);



void filter_print_preds(struct filter_pred **preds, int n_preds,

			struct trace_seq *s)
@@ -220,6 +221,7 @@ oom: 


	return -ENOMEM;

}

EXPORT_SYMBOL_GPL(init_preds);



void filter_free_subsystem_preds(struct event_subsystem *system)

{

kernel/trace/trace_output.c

+3 −0
Original line number Diff line number Diff line
@@ -94,6 +94,7 @@ trace_seq_printf(struct trace_seq *s, const char *fmt, ...) 


	return len;

}

EXPORT_SYMBOL_GPL(trace_seq_printf);



int trace_seq_bprintf(struct trace_seq *s, const char *fmt, const u32 *binary)

{
@@ -538,6 +539,7 @@ int register_ftrace_event(struct trace_event *event) 


	return ret;

}

EXPORT_SYMBOL_GPL(register_ftrace_event);



/**

 * unregister_ftrace_event - remove a no longer used event
@@ -551,6 +553,7 @@ int unregister_ftrace_event(struct trace_event *event) 


	return 0;

}

EXPORT_SYMBOL_GPL(unregister_ftrace_event);



/*

 * Standard events