1 /* 2 * Definitions for measuring cputime on ia64 machines. 3 * 4 * Based on <asm-powerpc/cputime.h>. 5 * 6 * Copyright (C) 2007 FUJITSU LIMITED 7 * Copyright (C) 2007 Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com> 8 * 9 * This program is free software; you can redistribute it and/or 10 * modify it under the terms of the GNU General Public License 11 * as published by the Free Software Foundation; either version 12 * 2 of the License, or (at your option) any later version. 13 * 14 * If we have CONFIG_VIRT_CPU_ACCOUNTING, we measure cpu time in nsec. 15 * Otherwise we measure cpu time in jiffies using the generic definitions. 16 */ 17 18 #ifndef __IA64_CPUTIME_H 19 #define __IA64_CPUTIME_H 20 21 #ifndef CONFIG_VIRT_CPU_ACCOUNTING 22 #include <asm-generic/cputime.h> 23 #else 24 25 #include <linux/time.h> 26 #include <linux/jiffies.h> 27 #include <asm/processor.h> 28 29 typedef u64 cputime_t; 30 typedef u64 cputime64_t; 31 32 #define cputime_zero ((cputime_t)0) 33 #define cputime_one_jiffy jiffies_to_cputime(1) 34 #define cputime_max ((~((cputime_t)0) >> 1) - 1) 35 #define cputime_add(__a, __b) ((__a) + (__b)) 36 #define cputime_sub(__a, __b) ((__a) - (__b)) 37 #define cputime_div(__a, __n) ((__a) / (__n)) 38 #define cputime_halve(__a) ((__a) >> 1) 39 #define cputime_eq(__a, __b) ((__a) == (__b)) 40 #define cputime_gt(__a, __b) ((__a) > (__b)) 41 #define cputime_ge(__a, __b) ((__a) >= (__b)) 42 #define cputime_lt(__a, __b) ((__a) < (__b)) 43 #define cputime_le(__a, __b) ((__a) <= (__b)) 44 45 #define cputime64_zero ((cputime64_t)0) 46 #define cputime64_add(__a, __b) ((__a) + (__b)) 47 #define cputime64_sub(__a, __b) ((__a) - (__b)) 48 #define cputime_to_cputime64(__ct) (__ct) 49 50 /* 51 * Convert cputime <-> jiffies (HZ) 52 */ 53 #define cputime_to_jiffies(__ct) ((__ct) / (NSEC_PER_SEC / HZ)) 54 #define jiffies_to_cputime(__jif) ((__jif) * (NSEC_PER_SEC / HZ)) 55 #define cputime64_to_jiffies64(__ct) ((__ct) / (NSEC_PER_SEC / HZ)) 56 #define jiffies64_to_cputime64(__jif) ((__jif) * (NSEC_PER_SEC / HZ)) 57 58 /* 59 * Convert cputime <-> milliseconds 60 */ 61 #define cputime_to_msecs(__ct) ((__ct) / NSEC_PER_MSEC) 62 #define msecs_to_cputime(__msecs) ((__msecs) * NSEC_PER_MSEC) 63 64 /* 65 * Convert cputime <-> seconds 66 */ 67 #define cputime_to_secs(__ct) ((__ct) / NSEC_PER_SEC) 68 #define secs_to_cputime(__secs) ((__secs) * NSEC_PER_SEC) 69 70 /* 71 * Convert cputime <-> timespec (nsec) 72 */ 73 static inline cputime_t timespec_to_cputime(const struct timespec *val) 74 { 75 cputime_t ret = val->tv_sec * NSEC_PER_SEC; 76 return (ret + val->tv_nsec); 77 } 78 static inline void cputime_to_timespec(const cputime_t ct, struct timespec *val) 79 { 80 val->tv_sec = ct / NSEC_PER_SEC; 81 val->tv_nsec = ct % NSEC_PER_SEC; 82 } 83 84 /* 85 * Convert cputime <-> timeval (msec) 86 */ 87 static inline cputime_t timeval_to_cputime(struct timeval *val) 88 { 89 cputime_t ret = val->tv_sec * NSEC_PER_SEC; 90 return (ret + val->tv_usec * NSEC_PER_USEC); 91 } 92 static inline void cputime_to_timeval(const cputime_t ct, struct timeval *val) 93 { 94 val->tv_sec = ct / NSEC_PER_SEC; 95 val->tv_usec = (ct % NSEC_PER_SEC) / NSEC_PER_USEC; 96 } 97 98 /* 99 * Convert cputime <-> clock (USER_HZ) 100 */ 101 #define cputime_to_clock_t(__ct) ((__ct) / (NSEC_PER_SEC / USER_HZ)) 102 #define clock_t_to_cputime(__x) ((__x) * (NSEC_PER_SEC / USER_HZ)) 103 104 /* 105 * Convert cputime64 to clock. 106 */ 107 #define cputime64_to_clock_t(__ct) cputime_to_clock_t((cputime_t)__ct) 108 109 #endif /* CONFIG_VIRT_CPU_ACCOUNTING */ 110 #endif /* __IA64_CPUTIME_H */ 111