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author | 2015-08-04 12:17:53 -0700 | |
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committer | 2015-08-04 15:44:42 -0700 | |
commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/arch/s390/include/asm/cputime.h | |
parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (diff) |
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base.
It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:
commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat Jul 25 12:13:34 2015 +0200
Prepare v4.1.3-rt3
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.
Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/arch/s390/include/asm/cputime.h')
-rw-r--r-- | kernel/arch/s390/include/asm/cputime.h | 148 |
1 files changed, 148 insertions, 0 deletions
diff --git a/kernel/arch/s390/include/asm/cputime.h b/kernel/arch/s390/include/asm/cputime.h new file mode 100644 index 000000000..221b454c7 --- /dev/null +++ b/kernel/arch/s390/include/asm/cputime.h @@ -0,0 +1,148 @@ +/* + * Copyright IBM Corp. 2004 + * + * Author: Martin Schwidefsky <schwidefsky@de.ibm.com> + */ + +#ifndef _S390_CPUTIME_H +#define _S390_CPUTIME_H + +#include <linux/types.h> +#include <asm/div64.h> + +#define CPUTIME_PER_USEC 4096ULL +#define CPUTIME_PER_SEC (CPUTIME_PER_USEC * USEC_PER_SEC) + +/* We want to use full resolution of the CPU timer: 2**-12 micro-seconds. */ + +typedef unsigned long long __nocast cputime_t; +typedef unsigned long long __nocast cputime64_t; + +#define cmpxchg_cputime(ptr, old, new) cmpxchg64(ptr, old, new) + +static inline unsigned long __div(unsigned long long n, unsigned long base) +{ + return n / base; +} + +#define cputime_one_jiffy jiffies_to_cputime(1) + +/* + * Convert cputime to jiffies and back. + */ +static inline unsigned long cputime_to_jiffies(const cputime_t cputime) +{ + return __div((__force unsigned long long) cputime, CPUTIME_PER_SEC / HZ); +} + +static inline cputime_t jiffies_to_cputime(const unsigned int jif) +{ + return (__force cputime_t)(jif * (CPUTIME_PER_SEC / HZ)); +} + +static inline u64 cputime64_to_jiffies64(cputime64_t cputime) +{ + unsigned long long jif = (__force unsigned long long) cputime; + do_div(jif, CPUTIME_PER_SEC / HZ); + return jif; +} + +static inline cputime64_t jiffies64_to_cputime64(const u64 jif) +{ + return (__force cputime64_t)(jif * (CPUTIME_PER_SEC / HZ)); +} + +/* + * Convert cputime to microseconds and back. + */ +static inline unsigned int cputime_to_usecs(const cputime_t cputime) +{ + return (__force unsigned long long) cputime >> 12; +} + +static inline cputime_t usecs_to_cputime(const unsigned int m) +{ + return (__force cputime_t)(m * CPUTIME_PER_USEC); +} + +#define usecs_to_cputime64(m) usecs_to_cputime(m) + +/* + * Convert cputime to milliseconds and back. + */ +static inline unsigned int cputime_to_secs(const cputime_t cputime) +{ + return __div((__force unsigned long long) cputime, CPUTIME_PER_SEC / 2) >> 1; +} + +static inline cputime_t secs_to_cputime(const unsigned int s) +{ + return (__force cputime_t)(s * CPUTIME_PER_SEC); +} + +/* + * Convert cputime to timespec and back. + */ +static inline cputime_t timespec_to_cputime(const struct timespec *value) +{ + unsigned long long ret = value->tv_sec * CPUTIME_PER_SEC; + return (__force cputime_t)(ret + __div(value->tv_nsec * CPUTIME_PER_USEC, NSEC_PER_USEC)); +} + +static inline void cputime_to_timespec(const cputime_t cputime, + struct timespec *value) +{ + unsigned long long __cputime = (__force unsigned long long) cputime; + value->tv_nsec = (__cputime % CPUTIME_PER_SEC) * NSEC_PER_USEC / CPUTIME_PER_USEC; + value->tv_sec = __cputime / CPUTIME_PER_SEC; +} + +/* + * Convert cputime to timeval and back. + * Since cputime and timeval have the same resolution (microseconds) + * this is easy. + */ +static inline cputime_t timeval_to_cputime(const struct timeval *value) +{ + unsigned long long ret = value->tv_sec * CPUTIME_PER_SEC; + return (__force cputime_t)(ret + value->tv_usec * CPUTIME_PER_USEC); +} + +static inline void cputime_to_timeval(const cputime_t cputime, + struct timeval *value) +{ + unsigned long long __cputime = (__force unsigned long long) cputime; + value->tv_usec = (__cputime % CPUTIME_PER_SEC) / CPUTIME_PER_USEC; + value->tv_sec = __cputime / CPUTIME_PER_SEC; +} + +/* + * Convert cputime to clock and back. + */ +static inline clock_t cputime_to_clock_t(cputime_t cputime) +{ + unsigned long long clock = (__force unsigned long long) cputime; + do_div(clock, CPUTIME_PER_SEC / USER_HZ); + return clock; +} + +static inline cputime_t clock_t_to_cputime(unsigned long x) +{ + return (__force cputime_t)(x * (CPUTIME_PER_SEC / USER_HZ)); +} + +/* + * Convert cputime64 to clock. + */ +static inline clock_t cputime64_to_clock_t(cputime64_t cputime) +{ + unsigned long long clock = (__force unsigned long long) cputime; + do_div(clock, CPUTIME_PER_SEC / USER_HZ); + return clock; +} + +cputime64_t arch_cpu_idle_time(int cpu); + +#define arch_idle_time(cpu) arch_cpu_idle_time(cpu) + +#endif /* _S390_CPUTIME_H */ |