1951a39d68df598db08dfced8b4707755864a0492Ying Wang/**************************************************************************** 2951a39d68df598db08dfced8b4707755864a0492Ying Wang **************************************************************************** 3951a39d68df598db08dfced8b4707755864a0492Ying Wang *** 4951a39d68df598db08dfced8b4707755864a0492Ying Wang *** This header was automatically generated from a Linux kernel header 5951a39d68df598db08dfced8b4707755864a0492Ying Wang *** of the same name, to make information necessary for userspace to 6951a39d68df598db08dfced8b4707755864a0492Ying Wang *** call into the kernel available to libc. It contains only constants, 7951a39d68df598db08dfced8b4707755864a0492Ying Wang *** structures, and macros generated from the original header, and thus, 8951a39d68df598db08dfced8b4707755864a0492Ying Wang *** contains no copyrightable information. 9951a39d68df598db08dfced8b4707755864a0492Ying Wang *** 10951a39d68df598db08dfced8b4707755864a0492Ying Wang **************************************************************************** 11951a39d68df598db08dfced8b4707755864a0492Ying Wang ****************************************************************************/ 12951a39d68df598db08dfced8b4707755864a0492Ying Wang#ifndef _LINUX_JIFFIES_H 13951a39d68df598db08dfced8b4707755864a0492Ying Wang#define _LINUX_JIFFIES_H 14951a39d68df598db08dfced8b4707755864a0492Ying Wang 15951a39d68df598db08dfced8b4707755864a0492Ying Wang#include <linux/calc64.h> 16951a39d68df598db08dfced8b4707755864a0492Ying Wang#include <linux/kernel.h> 17951a39d68df598db08dfced8b4707755864a0492Ying Wang#include <linux/types.h> 18951a39d68df598db08dfced8b4707755864a0492Ying Wang#include <linux/time.h> 19951a39d68df598db08dfced8b4707755864a0492Ying Wang#include <linux/timex.h> 20951a39d68df598db08dfced8b4707755864a0492Ying Wang#include <asm/param.h> 21951a39d68df598db08dfced8b4707755864a0492Ying Wang 22951a39d68df598db08dfced8b4707755864a0492Ying Wang#if HZ >= (12 && HZ < 24) 23951a39d68df598db08dfced8b4707755864a0492Ying Wang#define SHIFT_HZ 4 24951a39d68df598db08dfced8b4707755864a0492Ying Wang#elif HZ >= 24 && HZ < 48 25951a39d68df598db08dfced8b4707755864a0492Ying Wang#define SHIFT_HZ 5 26951a39d68df598db08dfced8b4707755864a0492Ying Wang#elif HZ >= 48 && HZ < 96 27951a39d68df598db08dfced8b4707755864a0492Ying Wang#define SHIFT_HZ 6 28951a39d68df598db08dfced8b4707755864a0492Ying Wang#elif HZ >= 96 && HZ < 192 29951a39d68df598db08dfced8b4707755864a0492Ying Wang#define SHIFT_HZ 7 30951a39d68df598db08dfced8b4707755864a0492Ying Wang#elif HZ >= 192 && HZ < 384 31951a39d68df598db08dfced8b4707755864a0492Ying Wang#define SHIFT_HZ 8 32951a39d68df598db08dfced8b4707755864a0492Ying Wang#elif HZ >= 384 && HZ < 768 33951a39d68df598db08dfced8b4707755864a0492Ying Wang#define SHIFT_HZ 9 34951a39d68df598db08dfced8b4707755864a0492Ying Wang#elif HZ >= 768 && HZ < 1536 35951a39d68df598db08dfced8b4707755864a0492Ying Wang#define SHIFT_HZ 10 36951a39d68df598db08dfced8b4707755864a0492Ying Wang#else 37951a39d68df598db08dfced8b4707755864a0492Ying Wang#error You lose. 38951a39d68df598db08dfced8b4707755864a0492Ying Wang#endif 39951a39d68df598db08dfced8b4707755864a0492Ying Wang 40951a39d68df598db08dfced8b4707755864a0492Ying Wang#define LATCH ((CLOCK_TICK_RATE + HZ/2) / HZ) 41951a39d68df598db08dfced8b4707755864a0492Ying Wang 42951a39d68df598db08dfced8b4707755864a0492Ying Wang#define LATCH_HPET ((HPET_TICK_RATE + HZ/2) / HZ) 43951a39d68df598db08dfced8b4707755864a0492Ying Wang 44951a39d68df598db08dfced8b4707755864a0492Ying Wang#define SH_DIV(NOM,DEN,LSH) ( (((NOM) / (DEN)) << (LSH)) + ((((NOM) % (DEN)) << (LSH)) + (DEN) / 2) / (DEN)) 45951a39d68df598db08dfced8b4707755864a0492Ying Wang 46951a39d68df598db08dfced8b4707755864a0492Ying Wang#define ACTHZ (SH_DIV (CLOCK_TICK_RATE, LATCH, 8)) 47951a39d68df598db08dfced8b4707755864a0492Ying Wang 48951a39d68df598db08dfced8b4707755864a0492Ying Wang#define ACTHZ_HPET (SH_DIV (HPET_TICK_RATE, LATCH_HPET, 8)) 49951a39d68df598db08dfced8b4707755864a0492Ying Wang 50951a39d68df598db08dfced8b4707755864a0492Ying Wang#define TICK_NSEC (SH_DIV (1000000UL * 1000, ACTHZ, 8)) 51951a39d68df598db08dfced8b4707755864a0492Ying Wang 52951a39d68df598db08dfced8b4707755864a0492Ying Wang#define TICK_NSEC_HPET (SH_DIV(1000000UL * 1000, ACTHZ_HPET, 8)) 53951a39d68df598db08dfced8b4707755864a0492Ying Wang 54951a39d68df598db08dfced8b4707755864a0492Ying Wang#define TICK_USEC ((1000000UL + USER_HZ/2) / USER_HZ) 55951a39d68df598db08dfced8b4707755864a0492Ying Wang 56951a39d68df598db08dfced8b4707755864a0492Ying Wang#define TICK_USEC_TO_NSEC(TUSEC) (SH_DIV (TUSEC * USER_HZ * 1000, ACTHZ, 8)) 57951a39d68df598db08dfced8b4707755864a0492Ying Wang 58951a39d68df598db08dfced8b4707755864a0492Ying Wang#define __jiffy_data __attribute__((section(".data"))) 59951a39d68df598db08dfced8b4707755864a0492Ying Wang 60951a39d68df598db08dfced8b4707755864a0492Ying Wang#if BITS_PER_LONG < 64 61951a39d68df598db08dfced8b4707755864a0492Ying Wang 62951a39d68df598db08dfced8b4707755864a0492Ying Wang#else 63951a39d68df598db08dfced8b4707755864a0492Ying Wang#endif 64951a39d68df598db08dfced8b4707755864a0492Ying Wang#define time_after(a,b) (typecheck(unsigned long, a) && typecheck(unsigned long, b) && ((long)(b) - (long)(a) < 0)) 65951a39d68df598db08dfced8b4707755864a0492Ying Wang#define time_before(a,b) time_after(b,a) 66951a39d68df598db08dfced8b4707755864a0492Ying Wang#define time_after_eq(a,b) (typecheck(unsigned long, a) && typecheck(unsigned long, b) && ((long)(a) - (long)(b) >= 0)) 67951a39d68df598db08dfced8b4707755864a0492Ying Wang#define time_before_eq(a,b) time_after_eq(b,a) 68951a39d68df598db08dfced8b4707755864a0492Ying Wang#define INITIAL_JIFFIES ((unsigned long)(unsigned int) (-300*HZ)) 69951a39d68df598db08dfced8b4707755864a0492Ying Wang#define MAX_JIFFY_OFFSET ((~0UL >> 1)-1) 70951a39d68df598db08dfced8b4707755864a0492Ying Wang#define SEC_JIFFIE_SC (31 - SHIFT_HZ) 71951a39d68df598db08dfced8b4707755864a0492Ying Wang#if !((NSEC_PER_SEC << 2) / TICK_NSEC << SEC_JIFFIE_SC - 2 & 0x80000000) 72951a39d68df598db08dfced8b4707755864a0492Ying Wang#undef SEC_JIFFIE_SC 73951a39d68df598db08dfced8b4707755864a0492Ying Wang#define SEC_JIFFIE_SC (32 - SHIFT_HZ) 74951a39d68df598db08dfced8b4707755864a0492Ying Wang#endif 75951a39d68df598db08dfced8b4707755864a0492Ying Wang#define NSEC_JIFFIE_SC (SEC_JIFFIE_SC + 29) 76951a39d68df598db08dfced8b4707755864a0492Ying Wang#define USEC_JIFFIE_SC (SEC_JIFFIE_SC + 19) 77951a39d68df598db08dfced8b4707755864a0492Ying Wang#define SEC_CONVERSION ((unsigned long)((((u64)NSEC_PER_SEC << SEC_JIFFIE_SC) + TICK_NSEC -1) / (u64)TICK_NSEC)) 78951a39d68df598db08dfced8b4707755864a0492Ying Wang#define NSEC_CONVERSION ((unsigned long)((((u64)1 << NSEC_JIFFIE_SC) + TICK_NSEC -1) / (u64)TICK_NSEC)) 79951a39d68df598db08dfced8b4707755864a0492Ying Wang#define USEC_CONVERSION ((unsigned long)((((u64)NSEC_PER_USEC << USEC_JIFFIE_SC) + TICK_NSEC -1) / (u64)TICK_NSEC)) 80951a39d68df598db08dfced8b4707755864a0492Ying Wang#define USEC_ROUND (u64)(((u64)1 << USEC_JIFFIE_SC) - 1) 81951a39d68df598db08dfced8b4707755864a0492Ying Wang#if BITS_PER_LONG < 64 82951a39d68df598db08dfced8b4707755864a0492Ying Wang#define MAX_SEC_IN_JIFFIES (long)((u64)((u64)MAX_JIFFY_OFFSET * TICK_NSEC) / NSEC_PER_SEC) 83951a39d68df598db08dfced8b4707755864a0492Ying Wang#else 84951a39d68df598db08dfced8b4707755864a0492Ying Wang#define MAX_SEC_IN_JIFFIES (SH_DIV((MAX_JIFFY_OFFSET >> SEC_JIFFIE_SC) * TICK_NSEC, NSEC_PER_SEC, 1) - 1) 85951a39d68df598db08dfced8b4707755864a0492Ying Wang#endif 86951a39d68df598db08dfced8b4707755864a0492Ying Wang#if HZ <= (MSEC_PER_SEC && !(MSEC_PER_SEC % HZ)) 87951a39d68df598db08dfced8b4707755864a0492Ying Wang#elif HZ > MSEC_PER_SEC && !(HZ % MSEC_PER_SEC) 88951a39d68df598db08dfced8b4707755864a0492Ying Wang#else 89951a39d68df598db08dfced8b4707755864a0492Ying Wang#endif 90951a39d68df598db08dfced8b4707755864a0492Ying Wang#if HZ <= (USEC_PER_SEC && !(USEC_PER_SEC % HZ)) 91951a39d68df598db08dfced8b4707755864a0492Ying Wang#elif HZ > USEC_PER_SEC && !(HZ % USEC_PER_SEC) 92951a39d68df598db08dfced8b4707755864a0492Ying Wang#else 93951a39d68df598db08dfced8b4707755864a0492Ying Wang#endif 94951a39d68df598db08dfced8b4707755864a0492Ying Wang#if HZ <= (MSEC_PER_SEC && !(MSEC_PER_SEC % HZ)) 95951a39d68df598db08dfced8b4707755864a0492Ying Wang#elif HZ > MSEC_PER_SEC && !(HZ % MSEC_PER_SEC) 96951a39d68df598db08dfced8b4707755864a0492Ying Wang#else 97951a39d68df598db08dfced8b4707755864a0492Ying Wang#endif 98951a39d68df598db08dfced8b4707755864a0492Ying Wang#if HZ <= (USEC_PER_SEC && !(USEC_PER_SEC % HZ)) 99951a39d68df598db08dfced8b4707755864a0492Ying Wang#elif HZ > USEC_PER_SEC && !(HZ % USEC_PER_SEC) 100951a39d68df598db08dfced8b4707755864a0492Ying Wang#else 101951a39d68df598db08dfced8b4707755864a0492Ying Wang#endif 102951a39d68df598db08dfced8b4707755864a0492Ying Wang#if TICK_NSEC % NSEC_PER_SEC / USER_HZ == 0 103951a39d68df598db08dfced8b4707755864a0492Ying Wang#else 104951a39d68df598db08dfced8b4707755864a0492Ying Wang#endif 105951a39d68df598db08dfced8b4707755864a0492Ying Wang#if HZ % USER_HZ == 0 106951a39d68df598db08dfced8b4707755864a0492Ying Wang#else 107951a39d68df598db08dfced8b4707755864a0492Ying Wang#endif 108951a39d68df598db08dfced8b4707755864a0492Ying Wang#if TICK_NSEC % NSEC_PER_SEC / USER_HZ == 0 109951a39d68df598db08dfced8b4707755864a0492Ying Wang#else 110951a39d68df598db08dfced8b4707755864a0492Ying Wang#endif 111951a39d68df598db08dfced8b4707755864a0492Ying Wang#if NSEC_PER_SEC % USER_HZ == 0 112951a39d68df598db08dfced8b4707755864a0492Ying Wang#elif (USER_HZ % 512) == 0 113951a39d68df598db08dfced8b4707755864a0492Ying Wang#else 114951a39d68df598db08dfced8b4707755864a0492Ying Wang#endif 115951a39d68df598db08dfced8b4707755864a0492Ying Wang#endif 116