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timekeeping: remove timespec_add/timespec_del

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The last users were removed a while ago since everyone moved to ktime_t,
so we can remove the two unused interfaces for old timespec structures.

With those two gone, set_normalized_timespec() is also unused, so
remove that as well.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: John Stultz <john.stultz@linaro.org>
This commit is contained in:
Arnd Bergmann 2018-12-07 13:41:02 +01:00
parent 926617889d
commit 437e78d3fd
2 changed files with 0 additions and 61 deletions
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25
include/linux/time32.h
View file

@ -96,31 +96,6 @@ static inline int timespec_compare(const struct timespec *lhs, const struct time
return lhs->tv_nsec - rhs->tv_nsec; return lhs->tv_nsec - rhs->tv_nsec;
} }
extern void set_normalized_timespec(struct timespec *ts, time_t sec, s64 nsec);
static inline struct timespec timespec_add(struct timespec lhs,
struct timespec rhs)
{
struct timespec ts_delta;
set_normalized_timespec(&ts_delta, lhs.tv_sec + rhs.tv_sec,
lhs.tv_nsec + rhs.tv_nsec);
return ts_delta;
}
/*
* sub = lhs - rhs, in normalized form
*/
static inline struct timespec timespec_sub(struct timespec lhs,
struct timespec rhs)
{
struct timespec ts_delta;
set_normalized_timespec(&ts_delta, lhs.tv_sec - rhs.tv_sec,
lhs.tv_nsec - rhs.tv_nsec);
return ts_delta;
}
/* /*
* Returns true if the timespec is norm, false if denorm: * Returns true if the timespec is norm, false if denorm:
*/ */

36
kernel/time/time.c
View file

@ -386,42 +386,6 @@ time64_t mktime64(const unsigned int year0, const unsigned int mon0,
} }
EXPORT_SYMBOL(mktime64); EXPORT_SYMBOL(mktime64);
/**
* set_normalized_timespec - set timespec sec and nsec parts and normalize
*
* @ts: pointer to timespec variable to be set
* @sec: seconds to set
* @nsec: nanoseconds to set
*
* Set seconds and nanoseconds field of a timespec variable and
* normalize to the timespec storage format
*
* Note: The tv_nsec part is always in the range of
* 0 <= tv_nsec < NSEC_PER_SEC
* For negative values only the tv_sec field is negative !
*/
void set_normalized_timespec(struct timespec *ts, time_t sec, s64 nsec)
{
while (nsec >= NSEC_PER_SEC) {
/*
* The following asm() prevents the compiler from
* optimising this loop into a modulo operation. See
* also __iter_div_u64_rem() in include/linux/time.h
*/
asm("" : "+rm"(nsec));
nsec -= NSEC_PER_SEC;
++sec;
}
while (nsec < 0) {
asm("" : "+rm"(nsec));
nsec += NSEC_PER_SEC;
--sec;
}
ts->tv_sec = sec;
ts->tv_nsec = nsec;
}
EXPORT_SYMBOL(set_normalized_timespec);
/** /**
* ns_to_timespec - Convert nanoseconds to timespec * ns_to_timespec - Convert nanoseconds to timespec
* @nsec: the nanoseconds value to be converted * @nsec: the nanoseconds value to be converted