lttng-calibrate.c

   1 /*
   2  * lttng-calibrate.c
   3  *
   4  * Copyright 2011 (c) - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
   5  *
   6  * LTTng probe calibration.
   7  *
   8  * Dual LGPL v2.1/GPL v2 license.
   9  */
  10
  11 #include "lttng-abi.h"
  12 #include "lttng-events.h"
  13
  14 noinline
  15 void lttng_calibrate_kretprobe(void)
  16 {
  17         asm volatile ("");
  18 }
  19
  20 int lttng_calibrate(struct lttng_kernel_calibrate *calibrate)
  21 {
  22         switch (calibrate->type) {
  23         case LTTNG_KERNEL_CALIBRATE_KRETPROBE:
  24                 lttng_calibrate_kretprobe();
  25                 break;
  26         default:
  27                 return -EINVAL;
  28         }
  29         return 0;
  30 }