linux/kernel/time
Thomas Gleixner aa276e1caf x86, clockevents: add C1E aware idle function
C1E on AMD machines is like C3 but without control from the OS. Up to
now we disabled the local apic timer for those machines as it stops
when the CPU goes into C1E. This excludes those machines from high
resolution timers / dynamic ticks, which hurts especially X2 based
laptops.

The current boot time C1E detection has another, more serious flaw
as well: some BIOSes do not enable C1E until the ACPI processor module
is loaded. This causes systems to stop working after that point.

To work nicely with C1E enabled machines we use a separate idle
function, which checks on idle entry whether C1E was enabled in the
Interrupt Pending Message MSR. This allows us to do timer broadcasting
for C1E and covers the late enablement of C1E as well.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08 07:47:18 +02:00
..
clockevents.c time: fix typo in comments 2008-02-08 09:22:29 -08:00
clocksource.c clocksource: allow read access to available/current_clocksource 2008-05-03 18:11:48 +02:00
jiffies.c [PATCH] fix jiffies clocksource inittime 2007-04-04 21:12:47 -07:00
Kconfig clockevents: Allow build w/o run-tine usage for migration purposes 2007-10-12 23:04:05 +02:00
Makefile clockevents: Allow build w/o run-tine usage for migration purposes 2007-10-12 23:04:05 +02:00
ntp.c ntp: handle leap second via timer 2008-05-01 08:03:59 -07:00
tick-broadcast.c x86, clockevents: add C1E aware idle function 2008-07-08 07:47:18 +02:00
tick-common.c [S390] genirq/clockevents: move irq affinity prototypes/inlines to interrupt.h 2008-04-17 07:47:05 +02:00
tick-internal.h timer: clean up tick-broadcast.c 2008-01-30 13:30:01 +01:00
tick-oneshot.c [S390] genirq/clockevents: move irq affinity prototypes/inlines to interrupt.h 2008-04-17 07:47:05 +02:00
tick-sched.c softlockup: fix NOHZ wakeup 2008-04-25 00:25:08 +02:00
timekeeping.c ntp: handle leap second via timer 2008-05-01 08:03:59 -07:00
timer_list.c kernel: use non-racy method for proc entries creation 2008-04-29 08:06:22 -07:00
timer_stats.c kernel: use non-racy method for proc entries creation 2008-04-29 08:06:22 -07:00