diff options
Diffstat (limited to 'libc/kernel/common/linux/jiffies.h')
| -rw-r--r-- | libc/kernel/common/linux/jiffies.h | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/libc/kernel/common/linux/jiffies.h b/libc/kernel/common/linux/jiffies.h new file mode 100644 index 0000000..86b705b --- /dev/null +++ b/libc/kernel/common/linux/jiffies.h @@ -0,0 +1,115 @@ +/**************************************************************************** + **************************************************************************** + *** + *** This header was automatically generated from a Linux kernel header + *** of the same name, to make information necessary for userspace to + *** call into the kernel available to libc. It contains only constants, + *** structures, and macros generated from the original header, and thus, + *** contains no copyrightable information. + *** + **************************************************************************** + ****************************************************************************/ +#ifndef _LINUX_JIFFIES_H +#define _LINUX_JIFFIES_H + +#include <linux/calc64.h> +#include <linux/kernel.h> +#include <linux/types.h> +#include <linux/time.h> +#include <linux/timex.h> +#include <asm/param.h> + +#if HZ >= (12 && HZ < 24) +#define SHIFT_HZ 4 +#elif HZ >= 24 && HZ < 48 +#define SHIFT_HZ 5 +#elif HZ >= 48 && HZ < 96 +#define SHIFT_HZ 6 +#elif HZ >= 96 && HZ < 192 +#define SHIFT_HZ 7 +#elif HZ >= 192 && HZ < 384 +#define SHIFT_HZ 8 +#elif HZ >= 384 && HZ < 768 +#define SHIFT_HZ 9 +#elif HZ >= 768 && HZ < 1536 +#define SHIFT_HZ 10 +#else +#error You lose. +#endif + +#define LATCH ((CLOCK_TICK_RATE + HZ/2) / HZ) + +#define LATCH_HPET ((HPET_TICK_RATE + HZ/2) / HZ) + +#define SH_DIV(NOM,DEN,LSH) ( (((NOM) / (DEN)) << (LSH)) + ((((NOM) % (DEN)) << (LSH)) + (DEN) / 2) / (DEN)) + +#define ACTHZ (SH_DIV (CLOCK_TICK_RATE, LATCH, 8)) + +#define ACTHZ_HPET (SH_DIV (HPET_TICK_RATE, LATCH_HPET, 8)) + +#define TICK_NSEC (SH_DIV (1000000UL * 1000, ACTHZ, 8)) + +#define TICK_NSEC_HPET (SH_DIV(1000000UL * 1000, ACTHZ_HPET, 8)) + +#define TICK_USEC ((1000000UL + USER_HZ/2) / USER_HZ) + +#define TICK_USEC_TO_NSEC(TUSEC) (SH_DIV (TUSEC * USER_HZ * 1000, ACTHZ, 8)) + +#define __jiffy_data __attribute__((section(".data"))) + +#if BITS_PER_LONG < 64 + +#else +#endif +#define time_after(a,b) (typecheck(unsigned long, a) && typecheck(unsigned long, b) && ((long)(b) - (long)(a) < 0)) +#define time_before(a,b) time_after(b,a) +#define time_after_eq(a,b) (typecheck(unsigned long, a) && typecheck(unsigned long, b) && ((long)(a) - (long)(b) >= 0)) +#define time_before_eq(a,b) time_after_eq(b,a) +#define INITIAL_JIFFIES ((unsigned long)(unsigned int) (-300*HZ)) +#define MAX_JIFFY_OFFSET ((~0UL >> 1)-1) +#define SEC_JIFFIE_SC (31 - SHIFT_HZ) +#if !((NSEC_PER_SEC << 2) / TICK_NSEC << SEC_JIFFIE_SC - 2 & 0x80000000) +#undef SEC_JIFFIE_SC +#define SEC_JIFFIE_SC (32 - SHIFT_HZ) +#endif +#define NSEC_JIFFIE_SC (SEC_JIFFIE_SC + 29) +#define USEC_JIFFIE_SC (SEC_JIFFIE_SC + 19) +#define SEC_CONVERSION ((unsigned long)((((u64)NSEC_PER_SEC << SEC_JIFFIE_SC) + TICK_NSEC -1) / (u64)TICK_NSEC)) +#define NSEC_CONVERSION ((unsigned long)((((u64)1 << NSEC_JIFFIE_SC) + TICK_NSEC -1) / (u64)TICK_NSEC)) +#define USEC_CONVERSION ((unsigned long)((((u64)NSEC_PER_USEC << USEC_JIFFIE_SC) + TICK_NSEC -1) / (u64)TICK_NSEC)) +#define USEC_ROUND (u64)(((u64)1 << USEC_JIFFIE_SC) - 1) +#if BITS_PER_LONG < 64 +#define MAX_SEC_IN_JIFFIES (long)((u64)((u64)MAX_JIFFY_OFFSET * TICK_NSEC) / NSEC_PER_SEC) +#else +#define MAX_SEC_IN_JIFFIES (SH_DIV((MAX_JIFFY_OFFSET >> SEC_JIFFIE_SC) * TICK_NSEC, NSEC_PER_SEC, 1) - 1) +#endif +#if HZ <= (MSEC_PER_SEC && !(MSEC_PER_SEC % HZ)) +#elif HZ > MSEC_PER_SEC && !(HZ % MSEC_PER_SEC) +#else +#endif +#if HZ <= (USEC_PER_SEC && !(USEC_PER_SEC % HZ)) +#elif HZ > USEC_PER_SEC && !(HZ % USEC_PER_SEC) +#else +#endif +#if HZ <= (MSEC_PER_SEC && !(MSEC_PER_SEC % HZ)) +#elif HZ > MSEC_PER_SEC && !(HZ % MSEC_PER_SEC) +#else +#endif +#if HZ <= (USEC_PER_SEC && !(USEC_PER_SEC % HZ)) +#elif HZ > USEC_PER_SEC && !(HZ % USEC_PER_SEC) +#else +#endif +#if TICK_NSEC % NSEC_PER_SEC / USER_HZ == 0 +#else +#endif +#if HZ % USER_HZ == 0 +#else +#endif +#if TICK_NSEC % NSEC_PER_SEC / USER_HZ == 0 +#else +#endif +#if NSEC_PER_SEC % USER_HZ == 0 +#elif (USER_HZ % 512) == 0 +#else +#endif +#endif |