src/lttng-calibrate.c

   1 /* SPDX-License-Identifier: (GPL-2.0-only or LGPL-2.1-only)
   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 #include <lttng/events-internal.h>
  13
  14 static noinline
  15 void lttng_calibrate_kretprobe(void)
  16 {
  17         asm volatile ("");
  18 }
  19
  20 int lttng_calibrate(struct lttng_kernel_abi_calibrate *calibrate)
  21 {
  22         switch (calibrate->type) {
  23         case LTTNG_KERNEL_ABI_CALIBRATE_KRETPROBE:
  24                 lttng_calibrate_kretprobe();
  25                 break;
  26         default:
  27                 return -EINVAL;
  28         }
  29         return 0;
  30 }