📄 cputime.h
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#ifndef _ASM_GENERIC_CPUTIME_H#define _ASM_GENERIC_CPUTIME_H#include <linux/time.h>#include <linux/jiffies.h>typedef unsigned long cputime_t;#define cputime_zero (0UL)#define cputime_max ((~0UL >> 1) - 1)#define cputime_add(__a, __b) ((__a) + (__b))#define cputime_sub(__a, __b) ((__a) - (__b))#define cputime_div(__a, __n) ((__a) / (__n))#define cputime_halve(__a) ((__a) >> 1)#define cputime_eq(__a, __b) ((__a) == (__b))#define cputime_gt(__a, __b) ((__a) > (__b))#define cputime_ge(__a, __b) ((__a) >= (__b))#define cputime_lt(__a, __b) ((__a) < (__b))#define cputime_le(__a, __b) ((__a) <= (__b))#define cputime_to_jiffies(__ct) (__ct)#define jiffies_to_cputime(__hz) (__hz)typedef u64 cputime64_t;#define cputime64_zero (0ULL)#define cputime64_add(__a, __b) ((__a) + (__b))#define cputime64_sub(__a, __b) ((__a) - (__b))#define cputime64_to_jiffies64(__ct) (__ct)#define jiffies64_to_cputime64(__jif) (__jif)#define cputime_to_cputime64(__ct) ((u64) __ct)/* * Convert cputime to milliseconds and back. */#define cputime_to_msecs(__ct) jiffies_to_msecs(__ct)#define msecs_to_cputime(__msecs) msecs_to_jiffies(__msecs)/* * Convert cputime to seconds and back. */#define cputime_to_secs(jif) ((jif) / HZ)#define secs_to_cputime(sec) ((sec) * HZ)/* * Convert cputime to timespec and back. */#define timespec_to_cputime(__val) timespec_to_jiffies(__val)#define cputime_to_timespec(__ct,__val) jiffies_to_timespec(__ct,__val)/* * Convert cputime to timeval and back. */#define timeval_to_cputime(__val) timeval_to_jiffies(__val)#define cputime_to_timeval(__ct,__val) jiffies_to_timeval(__ct,__val)/* * Convert cputime to clock and back. */#define cputime_to_clock_t(__ct) jiffies_to_clock_t(__ct)#define clock_t_to_cputime(__x) clock_t_to_jiffies(__x)/* * Convert cputime64 to clock. */#define cputime64_to_clock_t(__ct) jiffies_64_to_clock_t(__ct)#endif
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