mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-12 01:16:45 +07:00
c78a4bcd1a
Saw the following compiler warning on the linux-next tree: kernel/itimer.c: In function 'set_cpu_itimer': kernel/itimer.c:152:2: warning: passing argument 1 of 'timeval_to_cputime' discards 'const' qualifier from pointer target type [enabled by default] ... timeval_to_cputime() is always passed a constant timeval in argument, we need to teach the nsecs based cputime implementation about that. Signed-off-by: Li Zhong <zhong@linux.vnet.ibm.com> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Kevin Hilman <khilman@linaro.org> Link: http://lkml.kernel.org/r/1361636925-22288-2-git-send-email-fweisbec@gmail.com Signed-off-by: Ingo Molnar <mingo@kernel.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Kevin Hilman <khilman@linaro.org>
105 lines
2.8 KiB
C
105 lines
2.8 KiB
C
/*
|
|
* Definitions for measuring cputime in nsecs resolution.
|
|
*
|
|
* Based on <arch/ia64/include/asm/cputime.h>
|
|
*
|
|
* Copyright (C) 2007 FUJITSU LIMITED
|
|
* Copyright (C) 2007 Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version
|
|
* 2 of the License, or (at your option) any later version.
|
|
*
|
|
*/
|
|
|
|
#ifndef _ASM_GENERIC_CPUTIME_NSECS_H
|
|
#define _ASM_GENERIC_CPUTIME_NSECS_H
|
|
|
|
typedef u64 __nocast cputime_t;
|
|
typedef u64 __nocast cputime64_t;
|
|
|
|
#define cputime_one_jiffy jiffies_to_cputime(1)
|
|
|
|
/*
|
|
* Convert cputime <-> jiffies (HZ)
|
|
*/
|
|
#define cputime_to_jiffies(__ct) \
|
|
((__force u64)(__ct) / (NSEC_PER_SEC / HZ))
|
|
#define cputime_to_scaled(__ct) (__ct)
|
|
#define jiffies_to_cputime(__jif) \
|
|
(__force cputime_t)((__jif) * (NSEC_PER_SEC / HZ))
|
|
#define cputime64_to_jiffies64(__ct) \
|
|
((__force u64)(__ct) / (NSEC_PER_SEC / HZ))
|
|
#define jiffies64_to_cputime64(__jif) \
|
|
(__force cputime64_t)((__jif) * (NSEC_PER_SEC / HZ))
|
|
|
|
|
|
/*
|
|
* Convert cputime <-> nanoseconds
|
|
*/
|
|
#define nsecs_to_cputime(__nsecs) ((__force u64)(__nsecs))
|
|
|
|
|
|
/*
|
|
* Convert cputime <-> microseconds
|
|
*/
|
|
#define cputime_to_usecs(__ct) \
|
|
((__force u64)(__ct) / NSEC_PER_USEC)
|
|
#define usecs_to_cputime(__usecs) \
|
|
(__force cputime_t)((__usecs) * NSEC_PER_USEC)
|
|
#define usecs_to_cputime64(__usecs) \
|
|
(__force cputime64_t)((__usecs) * NSEC_PER_USEC)
|
|
|
|
/*
|
|
* Convert cputime <-> seconds
|
|
*/
|
|
#define cputime_to_secs(__ct) \
|
|
((__force u64)(__ct) / NSEC_PER_SEC)
|
|
#define secs_to_cputime(__secs) \
|
|
(__force cputime_t)((__secs) * NSEC_PER_SEC)
|
|
|
|
/*
|
|
* Convert cputime <-> timespec (nsec)
|
|
*/
|
|
static inline cputime_t timespec_to_cputime(const struct timespec *val)
|
|
{
|
|
u64 ret = val->tv_sec * NSEC_PER_SEC + val->tv_nsec;
|
|
return (__force cputime_t) ret;
|
|
}
|
|
static inline void cputime_to_timespec(const cputime_t ct, struct timespec *val)
|
|
{
|
|
val->tv_sec = (__force u64) ct / NSEC_PER_SEC;
|
|
val->tv_nsec = (__force u64) ct % NSEC_PER_SEC;
|
|
}
|
|
|
|
/*
|
|
* Convert cputime <-> timeval (msec)
|
|
*/
|
|
static inline cputime_t timeval_to_cputime(const struct timeval *val)
|
|
{
|
|
u64 ret = val->tv_sec * NSEC_PER_SEC + val->tv_usec * NSEC_PER_USEC;
|
|
return (__force cputime_t) ret;
|
|
}
|
|
static inline void cputime_to_timeval(const cputime_t ct, struct timeval *val)
|
|
{
|
|
val->tv_sec = (__force u64) ct / NSEC_PER_SEC;
|
|
val->tv_usec = ((__force u64) ct % NSEC_PER_SEC) / NSEC_PER_USEC;
|
|
}
|
|
|
|
/*
|
|
* Convert cputime <-> clock (USER_HZ)
|
|
*/
|
|
#define cputime_to_clock_t(__ct) \
|
|
((__force u64)(__ct) / (NSEC_PER_SEC / USER_HZ))
|
|
#define clock_t_to_cputime(__x) \
|
|
(__force cputime_t)((__x) * (NSEC_PER_SEC / USER_HZ))
|
|
|
|
/*
|
|
* Convert cputime64 to clock.
|
|
*/
|
|
#define cputime64_to_clock_t(__ct) \
|
|
cputime_to_clock_t((__force cputime_t)__ct)
|
|
|
|
#endif
|