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Subject[PATCH 7/8] tracing/events: add export symbols for trace events in modules
From: Steven Rostedt <srostedt@redhat.com>

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>
---
kernel/trace/trace.c | 3 +++
kernel/trace/trace_events.c | 1 +
kernel/trace/trace_events_filter.c | 2 ++
kernel/trace/trace_output.c | 3 +++
4 files changed, 9 insertions(+), 0 deletions(-)
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index c0047fc..2d69b26 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -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,
diff --git a/kernel/trace/trace_events.c b/kernel/trace/trace_events.c
index 5c66aaf..8b9e621 100644
--- a/kernel/trace/trace_events.c
+++ b/kernel/trace/trace_events.c
@@ -53,6 +53,7 @@ err:

return -ENOMEM;
}
+EXPORT_SYMBOL_GPL(trace_define_field);

static void ftrace_clear_events(void)
{
diff --git a/kernel/trace/trace_events_filter.c b/kernel/trace/trace_events_filter.c
index d30b06b..f8e5eab 100644
--- a/kernel/trace/trace_events_filter.c
+++ b/kernel/trace/trace_events_filter.c
@@ -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)
{
diff --git a/kernel/trace/trace_output.c b/kernel/trace/trace_output.c
index 0e70fb0..83a8abb 100644
--- a/kernel/trace/trace_output.c
+++ b/kernel/trace/trace_output.c
@@ -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
--
1.6.2.1
--


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