/usr/share/systemtap/tapset/dyninst/guru-delay.stp is in systemtap-common 2.3-1ubuntu1.
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 | // Copyright (C) 2012 Red Hat Inc.
//
// This file is part of systemtap, and is free software. You can
// redistribute it and/or modify it under the terms of the GNU General
// Public License (GPL); either version 2, or (at your option) any
// later version.
//
// NB: functionally equivalent to linux/guru-delay.stp
%{
#include <time.h>
%}
function mdelay(ms:long)
{
udelay(ms * 1000);
}
function udelay(us:long)
%{ /* guru */
struct timespec ts = {
STAP_ARG_us / 1000000,
STAP_ARG_us % 1000000,
};
nanosleep(&ts, NULL);
// XXX spin on EINTR?
%}
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