kernel/trace/trace_event_profile.c

   1 /*
   2  * trace event based perf counter profiling
   3  *
   4  * Copyright (C) 2009 Red Hat Inc, Peter Zijlstra <pzijlstr@redhat.com>
   5  *
   6  */
   7
   8 #include "trace.h"
   9
  10 int ftrace_profile_enable(int event_id)
  11 {
  12         struct ftrace_event_call *event;
  13
  14         for_each_event(event) {
  15                 if (event->id == event_id)
  16                         return event->profile_enable(event);
  17         }
  18
  19         return -EINVAL;
  20 }
  21
  22 void ftrace_profile_disable(int event_id)
  23 {
  24         struct ftrace_event_call *event;
  25
  26         for_each_event(event) {
  27                 if (event->id == event_id)
  28                         return event->profile_disable(event);
  29         }
  30 }
  31