diff options
| -rw-r--r-- | include/linux/compat.h | 3 | ||||
| -rw-r--r-- | include/linux/timex.h | 5 | ||||
| -rw-r--r-- | kernel/compat.c | 3 | ||||
| -rw-r--r-- | kernel/time/ntp.c | 7 |
4 files changed, 15 insertions, 3 deletions
diff --git a/include/linux/compat.h b/include/linux/compat.h index 8fa7857e153b..cf8d11cad5ae 100644 --- a/include/linux/compat.h +++ b/include/linux/compat.h @@ -65,10 +65,11 @@ struct compat_timex { compat_long_t calcnt; compat_long_t errcnt; compat_long_t stbcnt; + compat_int_t tai; compat_int_t :32; compat_int_t :32; compat_int_t :32; compat_int_t :32; compat_int_t :32; compat_int_t :32; compat_int_t :32; compat_int_t :32; - compat_int_t :32; compat_int_t :32; compat_int_t :32; compat_int_t :32; + compat_int_t :32; compat_int_t :32; compat_int_t :32; }; #define _COMPAT_NSIG_WORDS (_COMPAT_NSIG / _COMPAT_NSIG_BPW) diff --git a/include/linux/timex.h b/include/linux/timex.h index 9fbdd12a52f1..6ff92237759a 100644 --- a/include/linux/timex.h +++ b/include/linux/timex.h @@ -121,9 +121,11 @@ struct timex { long errcnt; /* calibration errors (ro) */ long stbcnt; /* stability limit exceeded (ro) */ + int tai; /* TAI offset (ro) */ + int :32; int :32; int :32; int :32; int :32; int :32; int :32; int :32; - int :32; int :32; int :32; int :32; + int :32; int :32; int :32; }; /* @@ -135,6 +137,7 @@ struct timex { #define ADJ_ESTERROR 0x0008 /* estimated time error */ #define ADJ_STATUS 0x0010 /* clock status */ #define ADJ_TIMECONST 0x0020 /* pll time constant */ +#define ADJ_TAI 0x0080 /* set TAI offset */ #define ADJ_MICRO 0x1000 /* select microsecond resolution */ #define ADJ_NANO 0x2000 /* select nanosecond resolution */ #define ADJ_TICK 0x4000 /* tick value */ diff --git a/kernel/compat.c b/kernel/compat.c index 4a856a3643bb..32c254a8ab9a 100644 --- a/kernel/compat.c +++ b/kernel/compat.c @@ -955,7 +955,8 @@ asmlinkage long compat_sys_adjtimex(struct compat_timex __user *utp) __put_user(txc.jitcnt, &utp->jitcnt) || __put_user(txc.calcnt, &utp->calcnt) || __put_user(txc.errcnt, &utp->errcnt) || - __put_user(txc.stbcnt, &utp->stbcnt)) + __put_user(txc.stbcnt, &utp->stbcnt) || + __put_user(txc.tai, &utp->tai)) ret = -EFAULT; return ret; diff --git a/kernel/time/ntp.c b/kernel/time/ntp.c index 44491de312a0..10fe17df45a0 100644 --- a/kernel/time/ntp.c +++ b/kernel/time/ntp.c @@ -35,6 +35,7 @@ static u64 tick_length, tick_length_base; /* TIME_ERROR prevents overwriting the CMOS clock */ static int time_state = TIME_OK; /* clock synchronization status */ int time_status = STA_UNSYNC; /* clock status bits */ +static long time_tai; /* TAI offset (s) */ static s64 time_offset; /* time adjustment (ns) */ static long time_constant = 2; /* pll time constant */ long time_maxerror = NTP_PHASE_LIMIT; /* maximum error (us) */ @@ -162,6 +163,7 @@ void second_overflow(void) case TIME_DEL: if ((xtime.tv_sec + 1) % 86400 == 0) { xtime.tv_sec++; + time_tai--; wall_to_monotonic.tv_sec--; time_state = TIME_WAIT; printk(KERN_NOTICE "Clock: deleting leap second " @@ -169,6 +171,7 @@ void second_overflow(void) } break; case TIME_OOP: + time_tai++; time_state = TIME_WAIT; break; case TIME_WAIT: @@ -340,6 +343,9 @@ int do_adjtimex(struct timex *txc) time_constant = max(time_constant, 0l); } + if (txc->modes & ADJ_TAI && txc->constant > 0) + time_tai = txc->constant; + if (txc->modes & ADJ_OFFSET) { if (txc->modes == ADJ_OFFSET_SINGLESHOT) /* adjtime() is independent from ntp_adjtime() */ @@ -377,6 +383,7 @@ int do_adjtimex(struct timex *txc) txc->precision = 1; txc->tolerance = MAXFREQ_SCALED / PPM_SCALE; txc->tick = tick_usec; + txc->tai = time_tai; /* PPS is not implemented, so these are zero */ txc->ppsfreq = 0; |