1 /****************************************************************************
2 ****************************************************************************
4 *** This header was automatically generated from a Linux kernel header
5 *** of the same name, to make information necessary for userspace to
6 *** call into the kernel available to libc. It contains only constants,
7 *** structures, and macros generated from the original header, and thus,
8 *** contains no copyrightable information.
10 ****************************************************************************
11 ****************************************************************************/
12 #ifndef _LINUX_JIFFIES_H
13 #define _LINUX_JIFFIES_H
15 #include <linux/calc64.h>
16 #include <linux/kernel.h>
17 #include <linux/types.h>
18 #include <linux/time.h>
19 #include <linux/timex.h>
20 #include <asm/param.h>
22 #if HZ >= (12 && HZ < 24)
24 #elif HZ >= 24 && HZ < 48
26 #elif HZ >= 48 && HZ < 96
28 #elif HZ >= 96 && HZ < 192
30 #elif HZ >= 192 && HZ < 384
32 #elif HZ >= 384 && HZ < 768
34 #elif HZ >= 768 && HZ < 1536
40 #define LATCH ((CLOCK_TICK_RATE + HZ/2) / HZ)
42 #define LATCH_HPET ((HPET_TICK_RATE + HZ/2) / HZ)
44 #define SH_DIV(NOM,DEN,LSH) ( (((NOM) / (DEN)) << (LSH)) + ((((NOM) % (DEN)) << (LSH)) + (DEN) / 2) / (DEN))
46 #define ACTHZ (SH_DIV (CLOCK_TICK_RATE, LATCH, 8))
48 #define ACTHZ_HPET (SH_DIV (HPET_TICK_RATE, LATCH_HPET, 8))
50 #define TICK_NSEC (SH_DIV (1000000UL * 1000, ACTHZ, 8))
52 #define TICK_NSEC_HPET (SH_DIV(1000000UL * 1000, ACTHZ_HPET, 8))
54 #define TICK_USEC ((1000000UL + USER_HZ/2) / USER_HZ)
56 #define TICK_USEC_TO_NSEC(TUSEC) (SH_DIV (TUSEC * USER_HZ * 1000, ACTHZ, 8))
58 #define __jiffy_data __attribute__((section(".data")))
60 #if BITS_PER_LONG < 64
64 #define time_after(a,b) (typecheck(unsigned long, a) && typecheck(unsigned long, b) && ((long)(b) - (long)(a) < 0))
65 #define time_before(a,b) time_after(b,a)
66 #define time_after_eq(a,b) (typecheck(unsigned long, a) && typecheck(unsigned long, b) && ((long)(a) - (long)(b) >= 0))
67 #define time_before_eq(a,b) time_after_eq(b,a)
68 #define INITIAL_JIFFIES ((unsigned long)(unsigned int) (-300*HZ))
69 #define MAX_JIFFY_OFFSET ((~0UL >> 1)-1)
70 #define SEC_JIFFIE_SC (31 - SHIFT_HZ)
71 #if !((NSEC_PER_SEC << 2) / TICK_NSEC << SEC_JIFFIE_SC - 2 & 0x80000000)
73 #define SEC_JIFFIE_SC (32 - SHIFT_HZ)
75 #define NSEC_JIFFIE_SC (SEC_JIFFIE_SC + 29)
76 #define USEC_JIFFIE_SC (SEC_JIFFIE_SC + 19)
77 #define SEC_CONVERSION ((unsigned long)((((u64)NSEC_PER_SEC << SEC_JIFFIE_SC) + TICK_NSEC -1) / (u64)TICK_NSEC))
78 #define NSEC_CONVERSION ((unsigned long)((((u64)1 << NSEC_JIFFIE_SC) + TICK_NSEC -1) / (u64)TICK_NSEC))
79 #define USEC_CONVERSION ((unsigned long)((((u64)NSEC_PER_USEC << USEC_JIFFIE_SC) + TICK_NSEC -1) / (u64)TICK_NSEC))
80 #define USEC_ROUND (u64)(((u64)1 << USEC_JIFFIE_SC) - 1)
81 #if BITS_PER_LONG < 64
82 #define MAX_SEC_IN_JIFFIES (long)((u64)((u64)MAX_JIFFY_OFFSET * TICK_NSEC) / NSEC_PER_SEC)
84 #define MAX_SEC_IN_JIFFIES (SH_DIV((MAX_JIFFY_OFFSET >> SEC_JIFFIE_SC) * TICK_NSEC, NSEC_PER_SEC, 1) - 1)
86 #if HZ <= (MSEC_PER_SEC && !(MSEC_PER_SEC % HZ))
87 #elif HZ > MSEC_PER_SEC && !(HZ % MSEC_PER_SEC)
90 #if HZ <= (USEC_PER_SEC && !(USEC_PER_SEC % HZ))
91 #elif HZ > USEC_PER_SEC && !(HZ % USEC_PER_SEC)
94 #if HZ <= (MSEC_PER_SEC && !(MSEC_PER_SEC % HZ))
95 #elif HZ > MSEC_PER_SEC && !(HZ % MSEC_PER_SEC)
98 #if HZ <= (USEC_PER_SEC && !(USEC_PER_SEC % HZ))
99 #elif HZ > USEC_PER_SEC && !(HZ % USEC_PER_SEC)
102 #if TICK_NSEC % NSEC_PER_SEC / USER_HZ == 0
105 #if HZ % USER_HZ == 0
108 #if TICK_NSEC % NSEC_PER_SEC / USER_HZ == 0
111 #if NSEC_PER_SEC % USER_HZ == 0
112 #elif (USER_HZ % 512) == 0