2 files changed, 11 insertions, 4 deletions

diff --git a/Documentation/trace/kprobetrace.txt b/Documentation/trace/kprobetrace.txt
index 6521681e7838..9b8f7c6040a7 100644
--- a/Documentation/trace/kprobetrace.txt
+++ b/Documentation/trace/kprobetrace.txt
@@ -122,8 +122,15 @@ print fmt: "(%lx) dfd=%lx filename=%lx flags=%lx mode=%lx", REC->ip, REC->dfd, R
 
   echo > /sys/kernel/debug/tracing/kprobe_events
 
- This clears all probe points. and you can see the traced information via
-/sys/kernel/debug/tracing/trace.
+ This clears all probe points.
+
+ Right after definition, each event is disabled by default. For tracing these
+events, you need to enable it.
+
+  echo 1 > /sys/kernel/debug/tracing/events/kprobes/myprobe/enable
+  echo 1 > /sys/kernel/debug/tracing/events/kprobes/myretprobe/enable
+
+ And you can see the traced information via /sys/kernel/debug/tracing/trace.
 
   cat /sys/kernel/debug/tracing/trace
 # tracer: nop
diff --git a/kernel/trace/trace_kprobe.c b/kernel/trace/trace_kprobe.c
index d8db9357489b..f6821f16227e 100644
--- a/kernel/trace/trace_kprobe.c
+++ b/kernel/trace/trace_kprobe.c
@@ -383,7 +383,7 @@ static int register_trace_probe(struct trace_probe *tp)
                 goto end;
         }
 
-        tp->flags = TP_FLAG_TRACE;
+        tp->rp.kp.flags |= KPROBE_FLAG_DISABLED;
         if (probe_is_return(tp))
                 ret = register_kretprobe(&tp->rp);
         else
@@ -1298,7 +1298,7 @@ static int register_probe_event(struct trace_probe *tp)
         call->id = register_ftrace_event(&tp->event);
         if (!call->id)
                 return -ENODEV;
-        call->enabled = 1;
+        call->enabled = 0;
         call->regfunc = probe_event_enable;
         call->unregfunc = probe_event_disable;