/usr/src/lttng-modules-2.7.1/lttng-calibrate.c is in lttng-modules-dkms 2.7.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 | /*
* lttng-calibrate.c
*
* LTTng probe calibration.
*
* Copyright (C) 2010-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; only
* version 2.1 of the License.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "lttng-abi.h"
#include "lttng-events.h"
noinline
void lttng_calibrate_kretprobe(void)
{
asm volatile ("");
}
int lttng_calibrate(struct lttng_kernel_calibrate *calibrate)
{
switch (calibrate->type) {
case LTTNG_KERNEL_CALIBRATE_KRETPROBE:
lttng_calibrate_kretprobe();
break;
default:
return -EINVAL;
}
return 0;
}
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