Martin Schwidefsky 7bfa0a73b2 nohz: Introduce arch_needs_cpu ... commit 3c5d92a0cf upstream. Allow the architecture to request a normal jiffy tick when the system goes idle and tick_nohz_stop_sched_tick is called . On s390 the hook is used to prevent the system going fully idle if there has been an interrupt other than a clock comparator interrupt since the last wakeup. On s390 the HiperSockets response time for 1 connection ping-pong goes down from 42 to 34 microseconds. The CPU cost decreases by 27%. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> LKML-Reference: <20090929122533.402715150@de.ibm.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: John Jolly <jjolly@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>		2010-08-13 13:20:13 -07:00
..
clockevents.c	clockevents: Add missing include to pacify sparse	2010-01-28 15:00:24 -08:00
clocksource.c	timekeeping: Prevent oops when GENERIC_TIME=n	2010-04-01 15:58:06 -07:00
jiffies.c	clocksource: Cleanup clocksource selection	2009-08-15 10:55:46 +02:00
Kconfig
Makefile	time: add function to convert between calendar time and broken-down time for universal use	2009-09-24 07:20:56 -07:00
ntp.c	timekeeping: Introduce timekeeping_leap_insert	2009-08-15 10:55:45 +02:00
tick-broadcast.c	clockevent: Prevent dead lock on clockevents_lock	2009-08-19 18:15:10 +02:00
tick-common.c
tick-internal.h
tick-oneshot.c	clocksource: prevent selection of low resolution clocksourse also for nohz=on	2009-06-13 12:00:26 +02:00
tick-sched.c	nohz: Introduce arch_needs_cpu	2010-08-13 13:20:13 -07:00
timecompare.c
timeconv.c	time: add function to convert between calendar time and broken-down time for universal use	2009-09-24 07:20:56 -07:00
timekeeping.c	Export the symbol of getboottime and mmonotonic_to_bootbased	2010-02-23 07:37:52 -08:00
timer_list.c	hrtimer: Tune hrtimer_interrupt hang logic	2010-04-01 15:58:14 -07:00
timer_stats.c	const: constify remaining file_operations	2009-10-01 16:11:11 -07:00