From 0d94873011a10cea78d1bc0ba8cfc4203559d534 Mon Sep 17 00:00:00 2001 From: Preeti U Murthy Date: Wed, 26 Feb 2014 05:39:06 +0530 Subject: cpuidle/powernv: Add "Fast-Sleep" CPU idle state Fast sleep is one of the deep idle states on Power8 in which local timers of CPUs stop. On PowerPC we do not have an external clock device which can handle wakeup of such CPUs. Now that we have the support in the tick broadcast framework for archs that do not sport such a device and the low level support for fast sleep, enable it in the cpuidle framework on PowerNV. Signed-off-by: Preeti U Murthy Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/kernel/time.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'arch/powerpc/kernel/time.c') diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c index df2989b0d4c0..122a580f7322 100644 --- a/arch/powerpc/kernel/time.c +++ b/arch/powerpc/kernel/time.c @@ -42,6 +42,7 @@ #include #include #include +#include #include #include #include @@ -106,7 +107,7 @@ struct clock_event_device decrementer_clockevent = { .irq = 0, .set_next_event = decrementer_set_next_event, .set_mode = decrementer_set_mode, - .features = CLOCK_EVT_FEAT_ONESHOT, + .features = CLOCK_EVT_FEAT_ONESHOT | CLOCK_EVT_FEAT_C3STOP, }; EXPORT_SYMBOL(decrementer_clockevent); @@ -944,6 +945,7 @@ void __init time_init(void) clocksource_init(); init_decrementer_clockevent(); + tick_setup_hrtimer_broadcast(); } -- cgit v1.2.3