From eca5e168a98de615ce27298e9f76e31a20f994bf Mon Sep 17 00:00:00 2001 From: hselasky Date: Mon, 19 Oct 2015 11:46:48 +0000 Subject: [PATCH] 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 --- sys/ofed/include/linux/jiffies.h | 38 +++++ sys/ofed/include/linux/ktime.h | 274 ++++++------------------------- sys/ofed/include/linux/time.h | 131 +++++++++++++++ 3 files changed, 223 insertions(+), 220 deletions(-) create mode 100644 sys/ofed/include/linux/time.h diff --git a/sys/ofed/include/linux/jiffies.h b/sys/ofed/include/linux/jiffies.h index dce2e1544b9e..fe0bc98b6979 100644 --- a/sys/ofed/include/linux/jiffies.h +++ b/sys/ofed/include/linux/jiffies.h @@ -31,9 +31,11 @@ #include #include +#include #include #include +#include static inline int msecs_to_jiffies(int msec) @@ -46,13 +48,49 @@ msecs_to_jiffies(int msec) } #define jiffies ticks +#define jiffies_64 ticks #define jiffies_to_msecs(x) (((int64_t)(x)) * 1000 / hz) +#define MAX_JIFFY_OFFSET ((INT_MAX >> 1) - 1) + #define time_after(a, b) ((int)((b) - (a)) < 0) #define time_before(a, b) time_after(b,a) #define time_after_eq(a, b) ((int)((a) - (b)) >= 0) #define time_before_eq(a, b) time_after_eq(b, a) +#define time_in_range(a,b,c) \ + (time_after_eq(a,b) && time_before_eq(a,c)) #define HZ hz +static inline int +timespec_to_jiffies(const struct timespec *ts) +{ + u64 result; + + result = ((u64)hz * ts->tv_sec) + + (((u64)hz * ts->tv_nsec + NSEC_PER_SEC - 1) / NSEC_PER_SEC); + if (result > MAX_JIFFY_OFFSET) + result = MAX_JIFFY_OFFSET; + + return ((int)result); +} + +static inline int +usecs_to_jiffies(const unsigned int u) +{ + u64 result; + + result = ((u64)u * hz + 1000000 - 1) / 1000000; + if (result > MAX_JIFFY_OFFSET) + result = MAX_JIFFY_OFFSET; + + return ((int)result); +} + +static inline u64 +get_jiffies_64(void) +{ + return ((u64)(unsigned)ticks); +} + #endif /* _LINUX_JIFFIES_H_ */ diff --git a/sys/ofed/include/linux/ktime.h b/sys/ofed/include/linux/ktime.h index 7524afcf1ab2..09892f2d4274 100644 --- a/sys/ofed/include/linux/ktime.h +++ b/sys/ofed/include/linux/ktime.h @@ -1,5 +1,6 @@ /*- - * Copyright (c) 2014 Mellanox Technologies, Ltd. + * Copyright (c) 2014-2015 Mellanox Technologies, Ltd. + * Copyright (c) 2015 François Tigeot * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -27,274 +28,107 @@ #ifndef _LINUX_KTIME_H #define _LINUX_KTIME_H -#include #include +#include #include +#define ktime_get_ts(x) getnanouptime(x) -/* Get the monotonic time in timespec format: */ -#define ktime_get_ts getnanouptime - -#define NSEC_PER_USEC 1000L -#define NSEC_PER_SEC 1000000000L - -/* - * ktime_t: - * - * On 64-bit CPUs a single 64-bit variable is used to store the hrtimers - * internal representation of time values in scalar nanoseconds. The - * design plays out best on 64-bit CPUs, where most conversions are - * NOPs and most arithmetic ktime_t operations are plain arithmetic - * operations. - * - * On 32-bit CPUs an optimized representation of the timespec structure - * is used to avoid expensive conversions from and to timespecs. The - * endian-aware order of the tv struct members is chosen to allow - * mathematical operations on the tv64 member of the union too, which - * for certain operations produces better code. - * - * For architectures with efficient support for 64/32-bit conversions the - * plain scalar nanosecond based representation can be selected by the - * config switch CONFIG_KTIME_SCALAR. - */ +/* time values in nanoseconds */ union ktime { - s64 tv64; -#if BITS_PER_LONG != 64 && !defined(CONFIG_KTIME_SCALAR) - struct { -# ifdef __BIG_ENDIAN - s32 sec, nsec; -# else - s32 nsec, sec; -# endif - } tv; -#endif + int64_t tv64; }; -typedef union ktime ktime_t; /* Kill this */ +typedef union ktime ktime_t; #define KTIME_MAX ((s64)~((u64)1 << 63)) #define KTIME_SEC_MAX (KTIME_MAX / NSEC_PER_SEC) -/* - * ktime_t definitions when using the 64-bit scalar representation: - */ - -#if (BITS_PER_LONG == 64) || defined(CONFIG_KTIME_SCALAR) - -/** - * ktime_set - Set a ktime_t variable from a seconds/nanoseconds value - * @secs: seconds to set - * @nsecs: nanoseconds to set - * - * Return the ktime_t representation of the value - */ -static inline ktime_t ktime_set(const long secs, const unsigned long nsecs) +static inline int64_t +ktime_to_ns(ktime_t kt) { -#if (BITS_PER_LONG == 64) - if (unlikely(secs >= KTIME_SEC_MAX)) - return (ktime_t){ .tv64 = KTIME_MAX }; -#endif - return (ktime_t) { .tv64 = (s64)secs * NSEC_PER_SEC + (s64)nsecs }; + return kt.tv64; } -/* Subtract two ktime_t variables. rem = lhs -rhs: */ -#define ktime_sub(lhs, rhs) \ - ({ (ktime_t){ .tv64 = (lhs).tv64 - (rhs).tv64 }; }) - -/* Add two ktime_t variables. res = lhs + rhs: */ -#define ktime_add(lhs, rhs) \ - ({ (ktime_t){ .tv64 = (lhs).tv64 + (rhs).tv64 }; }) - -/* - * Add a ktime_t variable and a scalar nanosecond value. - * res = kt + nsval: - */ -#define ktime_add_ns(kt, nsval) \ - ({ (ktime_t){ .tv64 = (kt).tv64 + (nsval) }; }) - -/* - * Subtract a scalar nanosecod from a ktime_t variable - * res = kt - nsval: - */ -#define ktime_sub_ns(kt, nsval) \ - ({ (ktime_t){ .tv64 = (kt).tv64 - (nsval) }; }) - -/* convert a timespec to ktime_t format: */ -static inline ktime_t timespec_to_ktime(struct timespec ts) -{ - return ktime_set(ts.tv_sec, ts.tv_nsec); -} - -/* convert a timeval to ktime_t format: */ -static inline ktime_t timeval_to_ktime(struct timeval tv) -{ - return ktime_set(tv.tv_sec, tv.tv_usec * NSEC_PER_USEC); -} - -/* Map the ktime_t to timespec conversion to ns_to_timespec function */ -#define ktime_to_timespec(kt) ns_to_timespec((kt).tv64) - -/* Map the ktime_t to timeval conversion to ns_to_timeval function */ -#define ktime_to_timeval(kt) ns_to_timeval((kt).tv64) - -/* Convert ktime_t to nanoseconds - NOP in the scalar storage format: */ -#define ktime_to_ns(kt) ((kt).tv64) - -#else /* !((BITS_PER_LONG == 64) || defined(CONFIG_KTIME_SCALAR)) */ - -/* - * Helper macros/inlines to get the ktime_t math right in the timespec - * representation. The macros are sometimes ugly - their actual use is - * pretty okay-ish, given the circumstances. We do all this for - * performance reasons. The pure scalar nsec_t based code was nice and - * simple, but created too many 64-bit / 32-bit conversions and divisions. - * - * Be especially aware that negative values are represented in a way - * that the tv.sec field is negative and the tv.nsec field is greater - * or equal to zero but less than nanoseconds per second. This is the - * same representation which is used by timespecs. - * - * tv.sec < 0 and 0 >= tv.nsec < NSEC_PER_SEC - */ - -/* Set a ktime_t variable to a value in sec/nsec representation: */ -static inline ktime_t ktime_set(const long secs, const unsigned long nsecs) +static inline struct timeval +ktime_to_timeval(ktime_t kt) { - return (ktime_t) { .tv = { .sec = secs, .nsec = nsecs } }; + return ns_to_timeval(kt.tv64); } -/** - * ktime_sub - subtract two ktime_t variables - * @lhs: minuend - * @rhs: subtrahend - * - * Returns the remainder of the subtraction - */ -static inline ktime_t ktime_sub(const ktime_t lhs, const ktime_t rhs) +static inline ktime_t +ktime_add_ns(ktime_t kt, int64_t ns) { ktime_t res; - res.tv64 = lhs.tv64 - rhs.tv64; - if (res.tv.nsec < 0) - res.tv.nsec += NSEC_PER_SEC; - - return res; + res.tv64 = kt.tv64 + ns; + return kt; } -/** - * ktime_add - add two ktime_t variables - * @add1: addend1 - * @add2: addend2 - * - * Returns the sum of @add1 and @add2. - */ -static inline ktime_t ktime_add(const ktime_t add1, const ktime_t add2) +static inline ktime_t +ktime_sub_ns(ktime_t kt, int64_t ns) { ktime_t res; - res.tv64 = add1.tv64 + add2.tv64; - /* - * performance trick: the (u32) -NSEC gives 0x00000000Fxxxxxxx - * so we subtract NSEC_PER_SEC and add 1 to the upper 32 bit. - * - * it's equivalent to: - * tv.nsec -= NSEC_PER_SEC - * tv.sec ++; - */ - if (res.tv.nsec >= NSEC_PER_SEC) - res.tv64 += (u32)-NSEC_PER_SEC; - - return res; + res.tv64 = kt.tv64 - ns; + return kt; } -/** - * ktime_add_ns - Add a scalar nanoseconds value to a ktime_t variable - * @kt: addend - * @nsec: the scalar nsec value to add - * - * Returns the sum of @kt and @nsec in ktime_t format - */ -extern ktime_t ktime_add_ns(const ktime_t kt, u64 nsec); - -/** - * ktime_sub_ns - Subtract a scalar nanoseconds value from a ktime_t variable - * @kt: minuend - * @nsec: the scalar nsec value to subtract - * - * Returns the subtraction of @nsec from @kt in ktime_t format - */ -extern ktime_t ktime_sub_ns(const ktime_t kt, u64 nsec); - -/** - * timespec_to_ktime - convert a timespec to ktime_t format - * @ts: the timespec variable to convert - * - * Returns a ktime_t variable with the converted timespec value - */ -static inline ktime_t timespec_to_ktime(const struct timespec ts) +static inline ktime_t +ktime_set(const long secs, const unsigned long nsecs) { - return (ktime_t) { .tv = { .sec = (s32)ts.tv_sec, - .nsec = (s32)ts.tv_nsec } }; + ktime_t retval = { (s64)secs * NSEC_PER_SEC + (s64)nsecs }; + return (retval); } -/** - * timeval_to_ktime - convert a timeval to ktime_t format - * @tv: the timeval variable to convert - * - * Returns a ktime_t variable with the converted timeval value - */ -static inline ktime_t timeval_to_ktime(const struct timeval tv) +static inline ktime_t +ktime_sub(ktime_t lhs, ktime_t rhs) { - return (ktime_t) { .tv = { .sec = (s32)tv.tv_sec, - .nsec = (s32)(tv.tv_usec * - NSEC_PER_USEC) } }; + lhs.tv64 -= rhs.tv64; + return (lhs); } -/** - * ktime_to_timespec - convert a ktime_t variable to timespec format - * @kt: the ktime_t variable to convert - * - * Returns the timespec representation of the ktime value - */ -static inline struct timespec ktime_to_timespec(const ktime_t kt) +static inline ktime_t +ktime_add(ktime_t lhs, ktime_t rhs) { - return (struct timespec) { .tv_sec = (time_t) kt.tv.sec, - .tv_nsec = (long) kt.tv.nsec }; + lhs.tv64 += rhs.tv64; + return (lhs); } -/** - * ktime_to_timeval - convert a ktime_t variable to timeval format - * @kt: the ktime_t variable to convert - * - * Returns the timeval representation of the ktime value - */ -static inline struct timeval ktime_to_timeval(const ktime_t kt) +static inline ktime_t +timespec_to_ktime(struct timespec ts) { - return (struct timeval) { - .tv_sec = (time_t) kt.tv.sec, - .tv_usec = (suseconds_t) (kt.tv.nsec / NSEC_PER_USEC) }; + return (ktime_set(ts.tv_sec, ts.tv_nsec)); } -/** - * ktime_to_ns - convert a ktime_t variable to scalar nanoseconds - * @kt: the ktime_t variable to convert - * - * Returns the scalar nanoseconds representation of @kt - */ -static inline s64 ktime_to_ns(const ktime_t kt) +static inline ktime_t +timeval_to_ktime(struct timeval tv) { - return (s64) kt.tv.sec * NSEC_PER_SEC + kt.tv.nsec; + return (ktime_set(tv.tv_sec, tv.tv_usec * NSEC_PER_USEC)); } -#endif /* !((BITS_PER_LONG == 64) || defined(CONFIG_KTIME_SCALAR)) */ +#define ktime_to_timespec(kt) ns_to_timespec((kt).tv64) +#define ktime_to_timeval(kt) ns_to_timeval((kt).tv64) +#define ktime_to_ns(kt) ((kt).tv64) -static inline s64 ktime_get_ns(void) +static inline s64 +ktime_get_ns(void) { struct timespec ts; ktime_t kt; + ktime_get_ts(&ts); kt = timespec_to_ktime(ts); return (ktime_to_ns(kt)); } +static inline ktime_t +ktime_get(void) +{ + struct timespec ts; + + ktime_get_ts(&ts); + return (timespec_to_ktime(ts)); +} + #endif /* _LINUX_KTIME_H */ diff --git a/sys/ofed/include/linux/time.h b/sys/ofed/include/linux/time.h new file mode 100644 index 000000000000..ca72d045ef0f --- /dev/null +++ b/sys/ofed/include/linux/time.h @@ -0,0 +1,131 @@ +/* $FreeBSD$ */ +/* + * Copyright (c) 2014-2015 François Tigeot + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice unmodified, this list of conditions, and the following + * disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef _LINUX_TIME_H_ +#define _LINUX_TIME_H_ + +#define NSEC_PER_USEC 1000L +#define NSEC_PER_SEC 1000000000L + +#include +#include + +static inline struct timeval +ns_to_timeval(const int64_t nsec) +{ + struct timeval tv; + long rem; + + if (nsec == 0) { + tv.tv_sec = 0; + tv.tv_usec = 0; + return (tv); + } + + 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_ */ -- 2.39.5