1 files changed, 6 insertions, 21 deletions

diff --git a/kernel/trace/trace_event_perf.c b/kernel/trace/trace_event_perf.c
index 8a2b73f7c068..000e6e85b445 100644
--- a/kernel/trace/trace_event_perf.c
+++ b/kernel/trace/trace_event_perf.c
@@ -9,8 +9,6 @@
 #include <linux/kprobes.h>
 #include "trace.h"
 
-EXPORT_SYMBOL_GPL(perf_arch_fetch_caller_regs);
-
 static char *perf_trace_buf[4];
 
 /*
@@ -56,13 +54,7 @@ static int perf_trace_event_init(struct ftrace_event_call *tp_event,
                 }
         }
 
-        if (tp_event->class->reg)
-                ret = tp_event->class->reg(tp_event, TRACE_REG_PERF_REGISTER);
-        else
-                ret = tracepoint_probe_register(tp_event->name,
-                                                tp_event->class->perf_probe,
-                                                tp_event);
-
+        ret = tp_event->class->reg(tp_event, TRACE_REG_PERF_REGISTER);
         if (ret)
                 goto fail;
 
@@ -96,9 +88,7 @@ int perf_trace_init(struct perf_event *p_event)
         mutex_lock(&event_mutex);
         list_for_each_entry(tp_event, &ftrace_events, list) {
                 if (tp_event->event.type == event_id &&
-                    tp_event->class &&
-                    (tp_event->class->perf_probe ||
-                     tp_event->class->reg) &&
+                    tp_event->class && tp_event->class->reg &&
                     try_module_get(tp_event->mod)) {
                         ret = perf_trace_event_init(tp_event, p_event);
                         break;
@@ -138,18 +128,13 @@ void perf_trace_destroy(struct perf_event *p_event)
         if (--tp_event->perf_refcount > 0)
                 goto out;
 
-        if (tp_event->class->reg)
-                tp_event->class->reg(tp_event, TRACE_REG_PERF_UNREGISTER);
-        else
-                tracepoint_probe_unregister(tp_event->name,
-                                            tp_event->class->perf_probe,
-                                            tp_event);
+        tp_event->class->reg(tp_event, TRACE_REG_PERF_UNREGISTER);
 
         /*
-         * Ensure our callback won't be called anymore. See
-         * tracepoint_probe_unregister() and __DO_TRACE().
+         * Ensure our callback won't be called anymore. The buffers
+         * will be freed after that.
          */
-        synchronize_sched();
+        tracepoint_synchronize_unregister();
 
         free_percpu(tp_event->perf_events);
         tp_event->perf_events = NULL;