/* -*- linux-c -*- * Kernel Timer Functions * 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. */ #ifndef _LINUX_TIMER_H_ #define _LINUX_TIMER_H_ // If we're on kernels < 2.6.17, then hrtimers are not supported. #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,17) #error "hrtimers not implemented" #else /* kernel version >= 2.6.17 */ #include <linux/hrtimer.h> static unsigned long stap_hrtimer_resolution = 0; struct stap_hrtimer_probe { struct hrtimer hrtimer; const struct stap_probe * probe; int64_t intrv; int64_t rnd; unsigned enabled; }; // The function signature changed in 2.6.21. #ifdef STAPCONF_HRTIMER_REL typedef int hrtimer_return_t; #else typedef enum hrtimer_restart hrtimer_return_t; #endif // autoconf: add get/set expires if missing (pre 2.6.28-rc1) #ifndef STAPCONF_HRTIMER_GETSET_EXPIRES #define hrtimer_get_expires(timer) ((timer)->expires) #define hrtimer_set_expires(timer, time) (void)((timer)->expires = (time)) #endif // autoconf: adapt to HRTIMER_REL -> HRTIMER_MODE_REL renaming near 2.6.21 #ifdef STAPCONF_HRTIMER_REL #define HRTIMER_MODE_REL HRTIMER_REL #endif #endif /* kernel version >= 2.6.17 */ #endif /* _LINUX_TIMER_H_ */

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