From: DengChao Date: Sun, 13 Dec 2015 04:24:18 +0000 (+0800) Subject: timekeeping: Provide internal function __ktime_get_real_seconds X-Git-Tag: v4.5-rc1~160^2~2^2~3 X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=dee3665416a8553279d10b62b5e62685cbe5daa8;p=karo-tx-linux.git 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: John Stultz Signed-off-by: DengChao Signed-off-by: John Stultz --- diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c index d9249daf14ba..21cc23918cbd 100644 --- a/kernel/time/timekeeping.c +++ b/kernel/time/timekeeping.c @@ -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 /** diff --git a/kernel/time/timekeeping_internal.h b/kernel/time/timekeeping_internal.h index 4ea005a7f9da..e20466ffc208 100644 --- a/kernel/time/timekeeping_internal.h +++ b/kernel/time/timekeeping_internal.h @@ -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 */