// Copyright (C) 2012 Red Hat Inc., Bryn M. Reeves <bmr@redhat.com>
//
// 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.
//
// <tapsetdescription>
// Functions in the guru-delay tapset allow a probe handler to insert
// deliberate delays. This is sometimes useful as a fault-injection
// aid. Due to its likelihood of interference with the kernel, guru
// mode is required, and overload-prevention is suppressed.
// </tapsetdescription>
%{
/* guru */
#undef STP_OVERLOAD
#include <linux/delay.h>
%}
/**
* sfunction mdelay - millisecond delay
* @ms: Number of milliseconds to delay.
*
* Description: This function inserts a multi-millisecond busy-delay into a probe handler.
* It requires guru mode.
*/
function mdelay(ms:long) %{
/* guru */
mdelay(STAP_ARG_ms);
%}
/**
* sfunction udelay - microsecond delay
* @us: Number of microseconds to delay.
*
* Description: This function inserts a multi-microsecond busy-delay into a probe handler.
* It requires guru mode.
*/
function udelay(us:long) %{
/* guru */
udelay(STAP_ARG_us);
%}
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