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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: Steven Rostedt <rostedt@goodmis.org>
This commit is contained in:
Steven Rostedt 2009-04-10 18:12:50 -04:00 committed by Steven Rostedt
parent a59fd60272
commit 17c873ec28
4 changed files with 9 additions and 0 deletions
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3
kernel/trace/trace.c
View File

@ -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); return filter_check_discard(call, rec, global_trace.buffer, event);
} }
EXPORT_SYMBOL_GPL(filter_current_check_discard);
cycle_t ftrace_now(int cpu) 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, return trace_buffer_lock_reserve(&global_trace,
type, len, flags, pc); type, len, flags, pc);
} }
EXPORT_SYMBOL(trace_current_buffer_lock_reserve);
void trace_current_buffer_unlock_commit(struct ring_buffer_event *event, void trace_current_buffer_unlock_commit(struct ring_buffer_event *event,
unsigned long flags, int pc) 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); ring_buffer_discard_commit(global_trace.buffer, event);
} }
EXPORT_SYMBOL_GPL(trace_nowake_buffer_unlock_commit);
void void
trace_function(struct trace_array *tr, trace_function(struct trace_array *tr,

1
kernel/trace/trace_events.c
View File

@ -53,6 +53,7 @@ err:
return -ENOMEM; return -ENOMEM;
} }
EXPORT_SYMBOL_GPL(trace_define_field);
static void ftrace_clear_events(void) static void ftrace_clear_events(void)
{ {

2
kernel/trace/trace_events_filter.c
View File

@ -110,6 +110,7 @@ int filter_match_preds(struct ftrace_event_call *call, void *rec)
return 1; return 1;
} }
EXPORT_SYMBOL_GPL(filter_match_preds);
void filter_print_preds(struct filter_pred **preds, int n_preds, void filter_print_preds(struct filter_pred **preds, int n_preds,
struct trace_seq *s) struct trace_seq *s)
@ -220,6 +221,7 @@ oom:
return -ENOMEM; return -ENOMEM;
} }
EXPORT_SYMBOL_GPL(init_preds);
void filter_free_subsystem_preds(struct event_subsystem *system) void filter_free_subsystem_preds(struct event_subsystem *system)
{ {

3
kernel/trace/trace_output.c
View File

@ -94,6 +94,7 @@ trace_seq_printf(struct trace_seq *s, const char *fmt, ...)
return len; return len;
} }
EXPORT_SYMBOL_GPL(trace_seq_printf);
int trace_seq_bprintf(struct trace_seq *s, const char *fmt, const u32 *binary) 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; return ret;
} }
EXPORT_SYMBOL_GPL(register_ftrace_event);
/** /**
* unregister_ftrace_event - remove a no longer used event * unregister_ftrace_event - remove a no longer used event
@ -551,6 +553,7 @@ int unregister_ftrace_event(struct trace_event *event)
return 0; return 0;
} }
EXPORT_SYMBOL_GPL(unregister_ftrace_event);
/* /*
* Standard events * Standard events