Merge LinuxKPI changes from DragonflyBSD:
- Reimplement ktime header file to distinguish more from Linux. - Add new time header file to handle time related Linux functions. Sponsored by: Mellanox Technologies
This commit is contained in:
Hans Petter Selasky
parent
ecfc226c7d
commit
64bda586e1
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=289572
@ -31,9 +31,11 @@
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#include <linux/types.h>
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#include <linux/kernel.h>
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#include <linux/time.h>
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#include <sys/time.h>
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#include <sys/kernel.h>
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#include <sys/limits.h>
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static inline int
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msecs_to_jiffies(int msec)
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@ -46,13 +48,49 @@ msecs_to_jiffies(int msec)
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}
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#define jiffies ticks
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#define jiffies_64 ticks
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#define jiffies_to_msecs(x) (((int64_t)(x)) * 1000 / hz)
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#define MAX_JIFFY_OFFSET ((INT_MAX >> 1) - 1)
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#define time_after(a, b) ((int)((b) - (a)) < 0)
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#define time_before(a, b) time_after(b,a)
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#define time_after_eq(a, b) ((int)((a) - (b)) >= 0)
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#define time_before_eq(a, b) time_after_eq(b, a)
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#define time_in_range(a,b,c) \
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(time_after_eq(a,b) && time_before_eq(a,c))
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#define HZ hz
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static inline int
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timespec_to_jiffies(const struct timespec *ts)
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{
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u64 result;
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result = ((u64)hz * ts->tv_sec) +
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(((u64)hz * ts->tv_nsec + NSEC_PER_SEC - 1) / NSEC_PER_SEC);
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if (result > MAX_JIFFY_OFFSET)
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result = MAX_JIFFY_OFFSET;
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return ((int)result);
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}
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static inline int
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usecs_to_jiffies(const unsigned int u)
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{
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u64 result;
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result = ((u64)u * hz + 1000000 - 1) / 1000000;
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if (result > MAX_JIFFY_OFFSET)
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result = MAX_JIFFY_OFFSET;
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return ((int)result);
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}
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static inline u64
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get_jiffies_64(void)
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{
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return ((u64)(unsigned)ticks);
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}
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#endif /* _LINUX_JIFFIES_H_ */
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@ -1,5 +1,6 @@
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/*-
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* Copyright (c) 2014 Mellanox Technologies, Ltd.
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* Copyright (c) 2014-2015 Mellanox Technologies, Ltd.
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* Copyright (c) 2015 François Tigeot
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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@ -27,274 +28,107 @@
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#ifndef _LINUX_KTIME_H
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#define _LINUX_KTIME_H
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#include <sys/time.h>
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#include <linux/types.h>
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#include <linux/time.h>
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#include <linux/jiffies.h>
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#define ktime_get_ts(x) getnanouptime(x)
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/* Get the monotonic time in timespec format: */
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#define ktime_get_ts getnanouptime
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#define NSEC_PER_USEC 1000L
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#define NSEC_PER_SEC 1000000000L
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/*
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* ktime_t:
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*
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* On 64-bit CPUs a single 64-bit variable is used to store the hrtimers
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* internal representation of time values in scalar nanoseconds. The
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* design plays out best on 64-bit CPUs, where most conversions are
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* NOPs and most arithmetic ktime_t operations are plain arithmetic
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* operations.
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*
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* On 32-bit CPUs an optimized representation of the timespec structure
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* is used to avoid expensive conversions from and to timespecs. The
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* endian-aware order of the tv struct members is chosen to allow
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* mathematical operations on the tv64 member of the union too, which
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* for certain operations produces better code.
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*
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* For architectures with efficient support for 64/32-bit conversions the
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* plain scalar nanosecond based representation can be selected by the
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* config switch CONFIG_KTIME_SCALAR.
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*/
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/* time values in nanoseconds */
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union ktime {
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s64 tv64;
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#if BITS_PER_LONG != 64 && !defined(CONFIG_KTIME_SCALAR)
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struct {
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# ifdef __BIG_ENDIAN
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s32 sec, nsec;
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# else
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s32 nsec, sec;
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# endif
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} tv;
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#endif
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int64_t tv64;
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};
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typedef union ktime ktime_t; /* Kill this */
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typedef union ktime ktime_t;
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#define KTIME_MAX ((s64)~((u64)1 << 63))
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#define KTIME_SEC_MAX (KTIME_MAX / NSEC_PER_SEC)
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/*
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* ktime_t definitions when using the 64-bit scalar representation:
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*/
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#if (BITS_PER_LONG == 64) || defined(CONFIG_KTIME_SCALAR)
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/**
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* ktime_set - Set a ktime_t variable from a seconds/nanoseconds value
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* @secs: seconds to set
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* @nsecs: nanoseconds to set
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*
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* Return the ktime_t representation of the value
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*/
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static inline ktime_t ktime_set(const long secs, const unsigned long nsecs)
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static inline int64_t
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ktime_to_ns(ktime_t kt)
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{
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#if (BITS_PER_LONG == 64)
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if (unlikely(secs >= KTIME_SEC_MAX))
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return (ktime_t){ .tv64 = KTIME_MAX };
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#endif
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return (ktime_t) { .tv64 = (s64)secs * NSEC_PER_SEC + (s64)nsecs };
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return kt.tv64;
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}
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/* Subtract two ktime_t variables. rem = lhs -rhs: */
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#define ktime_sub(lhs, rhs) \
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({ (ktime_t){ .tv64 = (lhs).tv64 - (rhs).tv64 }; })
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/* Add two ktime_t variables. res = lhs + rhs: */
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#define ktime_add(lhs, rhs) \
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({ (ktime_t){ .tv64 = (lhs).tv64 + (rhs).tv64 }; })
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/*
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* Add a ktime_t variable and a scalar nanosecond value.
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* res = kt + nsval:
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*/
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#define ktime_add_ns(kt, nsval) \
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({ (ktime_t){ .tv64 = (kt).tv64 + (nsval) }; })
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/*
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* Subtract a scalar nanosecod from a ktime_t variable
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* res = kt - nsval:
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*/
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#define ktime_sub_ns(kt, nsval) \
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({ (ktime_t){ .tv64 = (kt).tv64 - (nsval) }; })
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/* convert a timespec to ktime_t format: */
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static inline ktime_t timespec_to_ktime(struct timespec ts)
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static inline struct timeval
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ktime_to_timeval(ktime_t kt)
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{
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return ktime_set(ts.tv_sec, ts.tv_nsec);
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return ns_to_timeval(kt.tv64);
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}
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/* convert a timeval to ktime_t format: */
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static inline ktime_t timeval_to_ktime(struct timeval tv)
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static inline ktime_t
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ktime_add_ns(ktime_t kt, int64_t ns)
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{
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return ktime_set(tv.tv_sec, tv.tv_usec * NSEC_PER_USEC);
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ktime_t res;
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res.tv64 = kt.tv64 + ns;
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return kt;
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}
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static inline ktime_t
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ktime_sub_ns(ktime_t kt, int64_t ns)
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{
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ktime_t res;
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res.tv64 = kt.tv64 - ns;
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return kt;
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}
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static inline ktime_t
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ktime_set(const long secs, const unsigned long nsecs)
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{
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ktime_t retval = { (s64)secs * NSEC_PER_SEC + (s64)nsecs };
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return (retval);
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}
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static inline ktime_t
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ktime_sub(ktime_t lhs, ktime_t rhs)
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{
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lhs.tv64 -= rhs.tv64;
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return (lhs);
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}
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static inline ktime_t
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ktime_add(ktime_t lhs, ktime_t rhs)
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{
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lhs.tv64 += rhs.tv64;
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return (lhs);
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}
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static inline ktime_t
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timespec_to_ktime(struct timespec ts)
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{
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return (ktime_set(ts.tv_sec, ts.tv_nsec));
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}
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static inline ktime_t
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timeval_to_ktime(struct timeval tv)
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{
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return (ktime_set(tv.tv_sec, tv.tv_usec * NSEC_PER_USEC));
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}
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/* Map the ktime_t to timespec conversion to ns_to_timespec function */
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#define ktime_to_timespec(kt) ns_to_timespec((kt).tv64)
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/* Map the ktime_t to timeval conversion to ns_to_timeval function */
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#define ktime_to_timeval(kt) ns_to_timeval((kt).tv64)
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/* Convert ktime_t to nanoseconds - NOP in the scalar storage format: */
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#define ktime_to_ns(kt) ((kt).tv64)
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#else /* !((BITS_PER_LONG == 64) || defined(CONFIG_KTIME_SCALAR)) */
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/*
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* Helper macros/inlines to get the ktime_t math right in the timespec
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* representation. The macros are sometimes ugly - their actual use is
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* pretty okay-ish, given the circumstances. We do all this for
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* performance reasons. The pure scalar nsec_t based code was nice and
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* simple, but created too many 64-bit / 32-bit conversions and divisions.
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*
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* Be especially aware that negative values are represented in a way
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* that the tv.sec field is negative and the tv.nsec field is greater
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* or equal to zero but less than nanoseconds per second. This is the
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* same representation which is used by timespecs.
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*
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* tv.sec < 0 and 0 >= tv.nsec < NSEC_PER_SEC
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*/
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/* Set a ktime_t variable to a value in sec/nsec representation: */
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static inline ktime_t ktime_set(const long secs, const unsigned long nsecs)
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{
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return (ktime_t) { .tv = { .sec = secs, .nsec = nsecs } };
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}
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/**
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* ktime_sub - subtract two ktime_t variables
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* @lhs: minuend
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* @rhs: subtrahend
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*
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* Returns the remainder of the subtraction
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*/
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static inline ktime_t ktime_sub(const ktime_t lhs, const ktime_t rhs)
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{
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ktime_t res;
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res.tv64 = lhs.tv64 - rhs.tv64;
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if (res.tv.nsec < 0)
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res.tv.nsec += NSEC_PER_SEC;
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return res;
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}
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/**
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* ktime_add - add two ktime_t variables
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* @add1: addend1
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* @add2: addend2
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*
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* Returns the sum of @add1 and @add2.
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*/
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static inline ktime_t ktime_add(const ktime_t add1, const ktime_t add2)
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{
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ktime_t res;
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res.tv64 = add1.tv64 + add2.tv64;
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/*
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* performance trick: the (u32) -NSEC gives 0x00000000Fxxxxxxx
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* so we subtract NSEC_PER_SEC and add 1 to the upper 32 bit.
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*
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* it's equivalent to:
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* tv.nsec -= NSEC_PER_SEC
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* tv.sec ++;
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*/
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if (res.tv.nsec >= NSEC_PER_SEC)
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res.tv64 += (u32)-NSEC_PER_SEC;
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return res;
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}
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/**
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* ktime_add_ns - Add a scalar nanoseconds value to a ktime_t variable
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* @kt: addend
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* @nsec: the scalar nsec value to add
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*
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* Returns the sum of @kt and @nsec in ktime_t format
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*/
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extern ktime_t ktime_add_ns(const ktime_t kt, u64 nsec);
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/**
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* ktime_sub_ns - Subtract a scalar nanoseconds value from a ktime_t variable
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* @kt: minuend
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* @nsec: the scalar nsec value to subtract
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*
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* Returns the subtraction of @nsec from @kt in ktime_t format
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*/
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extern ktime_t ktime_sub_ns(const ktime_t kt, u64 nsec);
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/**
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* timespec_to_ktime - convert a timespec to ktime_t format
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* @ts: the timespec variable to convert
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*
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* Returns a ktime_t variable with the converted timespec value
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*/
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static inline ktime_t timespec_to_ktime(const struct timespec ts)
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{
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return (ktime_t) { .tv = { .sec = (s32)ts.tv_sec,
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.nsec = (s32)ts.tv_nsec } };
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}
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/**
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* timeval_to_ktime - convert a timeval to ktime_t format
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* @tv: the timeval variable to convert
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*
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* Returns a ktime_t variable with the converted timeval value
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*/
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static inline ktime_t timeval_to_ktime(const struct timeval tv)
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{
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return (ktime_t) { .tv = { .sec = (s32)tv.tv_sec,
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.nsec = (s32)(tv.tv_usec *
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NSEC_PER_USEC) } };
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}
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/**
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* ktime_to_timespec - convert a ktime_t variable to timespec format
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* @kt: the ktime_t variable to convert
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*
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* Returns the timespec representation of the ktime value
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*/
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static inline struct timespec ktime_to_timespec(const ktime_t kt)
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{
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return (struct timespec) { .tv_sec = (time_t) kt.tv.sec,
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.tv_nsec = (long) kt.tv.nsec };
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}
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/**
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* ktime_to_timeval - convert a ktime_t variable to timeval format
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* @kt: the ktime_t variable to convert
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*
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* Returns the timeval representation of the ktime value
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*/
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static inline struct timeval ktime_to_timeval(const ktime_t kt)
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{
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return (struct timeval) {
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.tv_sec = (time_t) kt.tv.sec,
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.tv_usec = (suseconds_t) (kt.tv.nsec / NSEC_PER_USEC) };
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}
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/**
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* ktime_to_ns - convert a ktime_t variable to scalar nanoseconds
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* @kt: the ktime_t variable to convert
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*
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* Returns the scalar nanoseconds representation of @kt
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*/
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static inline s64 ktime_to_ns(const ktime_t kt)
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{
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return (s64) kt.tv.sec * NSEC_PER_SEC + kt.tv.nsec;
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}
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#endif /* !((BITS_PER_LONG == 64) || defined(CONFIG_KTIME_SCALAR)) */
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static inline s64 ktime_get_ns(void)
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static inline s64
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ktime_get_ns(void)
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{
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struct timespec ts;
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ktime_t kt;
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ktime_get_ts(&ts);
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kt = timespec_to_ktime(ts);
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return (ktime_to_ns(kt));
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}
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static inline ktime_t
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ktime_get(void)
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{
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struct timespec ts;
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ktime_get_ts(&ts);
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return (timespec_to_ktime(ts));
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}
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#endif /* _LINUX_KTIME_H */
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131
sys/ofed/include/linux/time.h
Normal file
131
sys/ofed/include/linux/time.h
Normal file
@ -0,0 +1,131 @@
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/* $FreeBSD$ */
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/*
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* Copyright (c) 2014-2015 François Tigeot
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
|
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* modification, are permitted provided that the following conditions
|
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* are met:
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* 1. Redistributions of source code must retain the above copyright
|
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* notice unmodified, this list of conditions, and the following
|
||||
* disclaimer.
|
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* 2. Redistributions in binary form must reproduce the above copyright
|
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* notice, this list of conditions and the following disclaimer in the
|
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||||
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _LINUX_TIME_H_
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#define _LINUX_TIME_H_
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#define NSEC_PER_USEC 1000L
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#define NSEC_PER_SEC 1000000000L
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#include <sys/time.h>
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#include <sys/stdint.h>
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static inline struct timeval
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ns_to_timeval(const int64_t nsec)
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{
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struct timeval tv;
|
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long rem;
|
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|
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if (nsec == 0) {
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tv.tv_sec = 0;
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tv.tv_usec = 0;
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return (tv);
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}
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|
||||
tv.tv_sec = nsec / NSEC_PER_SEC;
|
||||
rem = nsec % NSEC_PER_SEC;
|
||||
if (rem < 0) {
|
||||
tv.tv_sec--;
|
||||
rem += NSEC_PER_SEC;
|
||||
}
|
||||
tv.tv_usec = rem / 1000;
|
||||
return (tv);
|
||||
}
|
||||
|
||||
static inline int64_t
|
||||
timeval_to_ns(const struct timeval *tv)
|
||||
{
|
||||
return ((int64_t)tv->tv_sec * NSEC_PER_SEC) +
|
||||
tv->tv_usec * NSEC_PER_USEC;
|
||||
}
|
||||
|
||||
#define getrawmonotonic(ts) nanouptime(ts)
|
||||
|
||||
static inline struct timespec
|
||||
timespec_sub(struct timespec lhs, struct timespec rhs)
|
||||
{
|
||||
struct timespec ts;
|
||||
|
||||
ts.tv_sec = lhs.tv_sec;
|
||||
ts.tv_nsec = lhs.tv_nsec;
|
||||
timespecsub(&ts, &rhs);
|
||||
|
||||
return ts;
|
||||
}
|
||||
|
||||
static inline void
|
||||
set_normalized_timespec(struct timespec *ts, time_t sec, int64_t nsec)
|
||||
{
|
||||
/* XXX: this doesn't actually normalize anything */
|
||||
ts->tv_sec = sec;
|
||||
ts->tv_nsec = nsec;
|
||||
}
|
||||
|
||||
static inline int64_t
|
||||
timespec_to_ns(const struct timespec *ts)
|
||||
{
|
||||
return ((ts->tv_sec * NSEC_PER_SEC) + ts->tv_nsec);
|
||||
}
|
||||
|
||||
static inline struct timespec
|
||||
ns_to_timespec(const int64_t nsec)
|
||||
{
|
||||
struct timespec ts;
|
||||
int32_t rem;
|
||||
|
||||
if (nsec == 0) {
|
||||
ts.tv_sec = 0;
|
||||
ts.tv_nsec = 0;
|
||||
return (ts);
|
||||
}
|
||||
|
||||
ts.tv_sec = nsec / NSEC_PER_SEC;
|
||||
rem = nsec % NSEC_PER_SEC;
|
||||
if (rem < 0) {
|
||||
ts.tv_sec--;
|
||||
rem += NSEC_PER_SEC;
|
||||
}
|
||||
ts.tv_nsec = rem;
|
||||
return (ts);
|
||||
}
|
||||
|
||||
static inline int
|
||||
timespec_valid(const struct timespec *ts)
|
||||
{
|
||||
if (ts->tv_sec < 0 || ts->tv_sec > 100000000 ||
|
||||
ts->tv_nsec < 0 || ts->tv_nsec >= 1000000000)
|
||||
return (0);
|
||||
return (1);
|
||||
}
|
||||
|
||||
static inline unsigned long
|
||||
get_seconds(void)
|
||||
{
|
||||
return time_uptime;
|
||||
}
|
||||
|
||||
#endif /* _LINUX_TIME_H_ */
|
||||
Loading…
Reference in New Issue
Block a user