Miroslav Lichvar 8af3c153ba ntp: Clamp PLL update interval ... Clamp update interval to reduce PLL gain with low sampling rate (e.g. intermittent network connection) to avoid instability. The clamp roughly corresponds to the loop time constant, it's 8 * poll interval for SHIFT_PLL 2 and 32 * poll interval for SHIFT_PLL 4. This gives good results without affecting the gain in normal conditions where ntpd skips only up to seven consecutive samples. Signed-off-by: Miroslav Lichvar <mlichvar@redhat.com> Acked-by: john stultz <johnstul@us.ibm.com> LKML-Reference: <1283870626-9472-1-git-send-email-mlichvar@redhat.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>		2010-09-09 20:48:37 +02:00
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clockevents.c	clockevent: Don't remove broadcast device when cpu is dead	2010-01-18 14:44:50 +01:00
clocksource.c	clocksource: Add __clocksource_updatefreq_hz/khz methods	2010-07-27 12:40:55 +02:00
jiffies.c
Kconfig	time: Kill off CONFIG_GENERIC_TIME	2010-07-27 12:40:54 +02:00
Makefile
ntp.c	ntp: Clamp PLL update interval	2010-09-09 20:48:37 +02:00
tick-broadcast.c	fix comment/printk typos concerning "already"	2010-07-11 21:45:40 +02:00
tick-common.c	clockevents: Convert to raw_spinlock	2009-12-14 23:55:34 +01:00
tick-internal.h	clockevents: Make tick_device_lock static	2009-12-14 23:55:34 +01:00
tick-oneshot.c	clockevents: Sanitize min_delta_ns adjustment and prevent overflows	2010-03-12 19:10:29 +01:00
tick-sched.c	Merge branch 'timers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2010-08-06 13:12:36 -07:00
timecompare.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
timeconv.c
timekeeping.c	time: Workaround gcc loop optimization that causes 64bit div errors	2010-08-13 12:03:24 -07:00
timer_list.c	sched: Intoduce get_cpu_iowait_time_us()	2010-05-09 19:35:27 +02:00
timer_stats.c	hrtimers: Convert to raw_spinlocks	2009-12-14 23:55:34 +01:00