mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-28 07:13:34 +00:00
4f0fad9a60
At this point, we have converted most of the kernel to use timespec64 consistently in place of timespec, so it seems it's time to make timespec64 the native structure and define timespec in terms of that one on 64-bit architectures. Starting with gcc-5, the compiler can completely optimize away the timespec_to_timespec64 and timespec64_to_timespec functions on 64-bit architectures. With older compilers, we introduce a couple of extra copies of local variables, but those are easily avoided by using the timespec64 based interfaces consistently, as we do in most of the important code paths already. The main upside of removing the hack is that printing the tv_sec field of a timespec64 structure can now use the %lld format string on all architectures without a cast to time64_t. Without this patch, the field is a 'long' type and would have to be printed using %ld on 64-bit architectures. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Stephen Boyd <sboyd@kernel.org> Cc: y2038@lists.linaro.org Cc: John Stultz <john.stultz@linaro.org> Link: https://lkml.kernel.org/r/20180427134016.2525989-2-arnd@arndb.de
103 lines
2.1 KiB
C
103 lines
2.1 KiB
C
#ifndef _LINUX_TIMEKEEPING32_H
|
|
#define _LINUX_TIMEKEEPING32_H
|
|
/*
|
|
* These interfaces are all based on the old timespec type
|
|
* and should get replaced with the timespec64 based versions
|
|
* over time so we can remove the file here.
|
|
*/
|
|
|
|
extern void do_gettimeofday(struct timeval *tv);
|
|
unsigned long get_seconds(void);
|
|
|
|
static inline struct timespec current_kernel_time(void)
|
|
{
|
|
struct timespec64 now = current_kernel_time64();
|
|
|
|
return timespec64_to_timespec(now);
|
|
}
|
|
|
|
/**
|
|
* Deprecated. Use do_settimeofday64().
|
|
*/
|
|
static inline int do_settimeofday(const struct timespec *ts)
|
|
{
|
|
struct timespec64 ts64;
|
|
|
|
ts64 = timespec_to_timespec64(*ts);
|
|
return do_settimeofday64(&ts64);
|
|
}
|
|
|
|
static inline int __getnstimeofday(struct timespec *ts)
|
|
{
|
|
struct timespec64 ts64;
|
|
int ret = __getnstimeofday64(&ts64);
|
|
|
|
*ts = timespec64_to_timespec(ts64);
|
|
return ret;
|
|
}
|
|
|
|
static inline void getnstimeofday(struct timespec *ts)
|
|
{
|
|
struct timespec64 ts64;
|
|
|
|
getnstimeofday64(&ts64);
|
|
*ts = timespec64_to_timespec(ts64);
|
|
}
|
|
|
|
static inline void ktime_get_ts(struct timespec *ts)
|
|
{
|
|
struct timespec64 ts64;
|
|
|
|
ktime_get_ts64(&ts64);
|
|
*ts = timespec64_to_timespec(ts64);
|
|
}
|
|
|
|
static inline void ktime_get_real_ts(struct timespec *ts)
|
|
{
|
|
struct timespec64 ts64;
|
|
|
|
getnstimeofday64(&ts64);
|
|
*ts = timespec64_to_timespec(ts64);
|
|
}
|
|
|
|
static inline void getrawmonotonic(struct timespec *ts)
|
|
{
|
|
struct timespec64 ts64;
|
|
|
|
getrawmonotonic64(&ts64);
|
|
*ts = timespec64_to_timespec(ts64);
|
|
}
|
|
|
|
static inline struct timespec get_monotonic_coarse(void)
|
|
{
|
|
return timespec64_to_timespec(get_monotonic_coarse64());
|
|
}
|
|
|
|
static inline void getboottime(struct timespec *ts)
|
|
{
|
|
struct timespec64 ts64;
|
|
|
|
getboottime64(&ts64);
|
|
*ts = timespec64_to_timespec(ts64);
|
|
}
|
|
|
|
/*
|
|
* Timespec interfaces utilizing the ktime based ones
|
|
*/
|
|
static inline void get_monotonic_boottime(struct timespec *ts)
|
|
{
|
|
*ts = ktime_to_timespec(ktime_get_boottime());
|
|
}
|
|
|
|
static inline void timekeeping_clocktai(struct timespec *ts)
|
|
{
|
|
*ts = ktime_to_timespec(ktime_get_clocktai());
|
|
}
|
|
|
|
/*
|
|
* Persistent clock related interfaces
|
|
*/
|
|
extern void read_persistent_clock(struct timespec *ts);
|
|
extern int update_persistent_clock(struct timespec now);
|
|
|
|
#endif
|