lttng-calibrate.c

   1 /* SPDX-License-Identifier: (GPL-2.0 or LGPL-2.1)
   2  *
   3  * lttng-calibrate.c
   4  *
   5  * LTTng probe calibration.
   6  *
   7  * Copyright (C) 2010-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
   8  */
   9
  10 #include <lttng-abi.h>
  11 #include <lttng-events.h>
  12
  13 noinline
  14 void lttng_calibrate_kretprobe(void)
  15 {
  16         asm volatile ("");
  17 }
  18
  19 int lttng_calibrate(struct lttng_kernel_calibrate *calibrate)
  20 {
  21         switch (calibrate->type) {
  22         case LTTNG_KERNEL_CALIBRATE_KRETPROBE:
  23                 lttng_calibrate_kretprobe();
  24                 break;
  25         default:
  26                 return -EINVAL;
  27         }
  28         return 0;
  29 }