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Commit dee36654 authored by DengChao's avatar DengChao Committed by John Stultz
Browse files

timekeeping: Provide internal function __ktime_get_real_seconds 



In order to fix Y2038 issues in the ntp code we will need replace
get_seconds() with ktime_get_real_seconds() but as the ntp code uses
the timekeeping lock which is also used by ktime_get_real_seconds(),
we need a version without locking.
Add a new function __ktime_get_real_seconds() in timekeeping to
do this.

Reviewed-by: default avatarJohn Stultz <john.stultz@linaro.org>
Signed-off-by: default avatarDengChao <chao.deng@linaro.org>
Signed-off-by: default avatarJohn Stultz <john.stultz@linaro.org>
parent 37cf4dc3

kernel/time/timekeeping.c

+13 −0
Original line number Diff line number Diff line
@@ -845,6 +845,19 @@ time64_t ktime_get_real_seconds(void) 
}

EXPORT_SYMBOL_GPL(ktime_get_real_seconds);



/**

 * __ktime_get_real_seconds - The same as ktime_get_real_seconds

 * but without the sequence counter protect. This internal function

 * is called just when timekeeping lock is already held.

 */

time64_t __ktime_get_real_seconds(void)

{

	struct timekeeper *tk = &tk_core.timekeeper;



	return tk->xtime_sec;

}





#ifdef CONFIG_NTP_PPS



/**

kernel/time/timekeeping_internal.h

+2 −0
Original line number Diff line number Diff line
@@ -26,4 +26,6 @@ static inline cycle_t clocksource_delta(cycle_t now, cycle_t last, cycle_t mask) 
}

#endif



extern time64_t __ktime_get_real_seconds(void);



#endif /* _TIMEKEEPING_INTERNAL_H */