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2a709f28fa
* 0day explit mitigation * Memory corruption prevention * Privilege escalation prevention * Buffer over flow prevention * File System corruption defense * Thread escape prevention This may very well be the most intensive inclusion to BrooklynR. This will not be part of an x86 suite nor it will be released as tool kit. The security core toolkit will remain part of kernel base.
123 lines
3.1 KiB
C
123 lines
3.1 KiB
C
/*
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* Definitions for measuring cputime in nsecs resolution.
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*
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* Based on <arch/ia64/include/asm/cputime.h>
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*
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* Copyright (C) 2007 FUJITSU LIMITED
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* Copyright (C) 2007 Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*
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*/
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#ifndef _ASM_GENERIC_CPUTIME_NSECS_H
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#define _ASM_GENERIC_CPUTIME_NSECS_H
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#include <linux/math64.h>
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typedef u64 __nocast cputime_t;
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typedef u64 __nocast cputime64_t;
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#define cmpxchg_cputime(ptr, old, new) cmpxchg64(ptr, old, new)
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#define cputime_one_jiffy jiffies_to_cputime(1)
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#define cputime_div(__ct, divisor) div_u64((__force u64)__ct, divisor)
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#define cputime_div_rem(__ct, divisor, remainder) \
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div_u64_rem((__force u64)__ct, divisor, remainder);
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/*
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* Convert cputime <-> jiffies (HZ)
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*/
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#define cputime_to_jiffies(__ct) \
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cputime_div(__ct, NSEC_PER_SEC / HZ)
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#define cputime_to_scaled(__ct) (__ct)
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#define jiffies_to_cputime(__jif) \
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(__force cputime_t)((__jif) * (NSEC_PER_SEC / HZ))
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#define cputime64_to_jiffies64(__ct) \
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cputime_div(__ct, NSEC_PER_SEC / HZ)
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#define jiffies64_to_cputime64(__jif) \
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(__force cputime64_t)((__jif) * (NSEC_PER_SEC / HZ))
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/*
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* Convert cputime <-> nanoseconds
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*/
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#define cputime_to_nsecs(__ct) \
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(__force u64)(__ct)
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#define nsecs_to_cputime(__nsecs) \
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(__force cputime_t)(__nsecs)
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#define nsecs_to_cputime64(__nsecs) \
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(__force cputime64_t)(__nsecs)
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/*
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* Convert cputime <-> microseconds
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*/
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#define cputime_to_usecs(__ct) \
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cputime_div(__ct, NSEC_PER_USEC)
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#define usecs_to_cputime(__usecs) \
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(__force cputime_t)((__usecs) * NSEC_PER_USEC)
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#define usecs_to_cputime64(__usecs) \
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(__force cputime64_t)((__usecs) * NSEC_PER_USEC)
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/*
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* Convert cputime <-> seconds
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*/
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#define cputime_to_secs(__ct) \
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cputime_div(__ct, NSEC_PER_SEC)
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#define secs_to_cputime(__secs) \
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(__force cputime_t)((__secs) * NSEC_PER_SEC)
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/*
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* Convert cputime <-> timespec (nsec)
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*/
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static inline cputime_t timespec_to_cputime(const struct timespec *val)
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{
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u64 ret = (u64)val->tv_sec * NSEC_PER_SEC + val->tv_nsec;
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return (__force cputime_t) ret;
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}
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static inline void cputime_to_timespec(const cputime_t ct, struct timespec *val)
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{
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u32 rem;
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val->tv_sec = cputime_div_rem(ct, NSEC_PER_SEC, &rem);
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val->tv_nsec = rem;
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}
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/*
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* Convert cputime <-> timeval (msec)
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*/
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static inline cputime_t timeval_to_cputime(const struct timeval *val)
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{
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u64 ret = (u64)val->tv_sec * NSEC_PER_SEC +
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val->tv_usec * NSEC_PER_USEC;
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return (__force cputime_t) ret;
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}
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static inline void cputime_to_timeval(const cputime_t ct, struct timeval *val)
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{
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u32 rem;
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val->tv_sec = cputime_div_rem(ct, NSEC_PER_SEC, &rem);
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val->tv_usec = rem / NSEC_PER_USEC;
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}
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/*
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* Convert cputime <-> clock (USER_HZ)
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*/
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#define cputime_to_clock_t(__ct) \
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cputime_div(__ct, (NSEC_PER_SEC / USER_HZ))
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#define clock_t_to_cputime(__x) \
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(__force cputime_t)((__x) * (NSEC_PER_SEC / USER_HZ))
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/*
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* Convert cputime64 to clock.
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*/
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#define cputime64_to_clock_t(__ct) \
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cputime_to_clock_t((__force cputime_t)__ct)
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#endif
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