From a9eddc952870d29aa9df96ab862327eb6afa23d9 Mon Sep 17 00:00:00 2001 From: Zachary Amsden Date: Mon, 5 Mar 2007 00:30:41 -0800 Subject: [PATCH] [PATCH] vmi: fix nohz compile More goo from hrtimers integration. We do compile and run properly with NO_HZ enabled. There was a period when we didn't because of a missing export, but that was since fixed. And with the clocksource code now firmly in place, we can get rid of code that fixes up the wallclock, since this is done in the common infrastructure. This actually fixes a timer bug as well, that was caused by do_settimeofday no longer being callable with interrupts disabled due to the use of on_each_cpu(). Signed-off-by: Zachary Amsden Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/i386/Kconfig | 2 +- arch/i386/kernel/vmi.c | 1 + arch/i386/kernel/vmitime.c | 15 --------------- 3 files changed, 2 insertions(+), 16 deletions(-) diff --git a/arch/i386/Kconfig b/arch/i386/Kconfig index 2f7672545fe9..e970887b9e69 100644 --- a/arch/i386/Kconfig +++ b/arch/i386/Kconfig @@ -220,7 +220,7 @@ config PARAVIRT config VMI bool "VMI Paravirt-ops support" - depends on PARAVIRT && !NO_HZ + depends on PARAVIRT default y help VMI provides a paravirtualized interface to multiple hypervisors diff --git a/arch/i386/kernel/vmi.c b/arch/i386/kernel/vmi.c index a8aa57e77029..30e8253e6eef 100644 --- a/arch/i386/kernel/vmi.c +++ b/arch/i386/kernel/vmi.c @@ -934,6 +934,7 @@ void __init vmi_init(void) #ifdef CONFIG_X86_IO_APIC no_timer_check = 1; #endif + no_sync_cmos_clock = 1; local_irq_restore(flags & X86_EFLAGS_IF); } diff --git a/arch/i386/kernel/vmitime.c b/arch/i386/kernel/vmitime.c index 4bb218e2eb14..d21779749838 100644 --- a/arch/i386/kernel/vmitime.c +++ b/arch/i386/kernel/vmitime.c @@ -153,13 +153,6 @@ static void vmi_get_wallclock_ts(struct timespec *ts) ts->tv_sec = wallclock; } -static void update_xtime_from_wallclock(void) -{ - struct timespec ts; - vmi_get_wallclock_ts(&ts); - do_settimeofday(&ts); -} - unsigned long vmi_get_wallclock(void) { struct timespec ts; @@ -197,18 +190,10 @@ void __init vmi_time_init(void) set_intr_gate(LOCAL_TIMER_VECTOR, apic_vmi_timer_interrupt); #endif - no_sync_cmos_clock = 1; - - vmi_get_wallclock_ts(&xtime); - set_normalized_timespec(&wall_to_monotonic, - -xtime.tv_sec, -xtime.tv_nsec); - real_cycles_accounted_system = read_real_cycles(); - update_xtime_from_wallclock(); per_cpu(process_times_cycles_accounted_cpu, 0) = read_available_cycles(); cycles_per_sec = vmi_timer_ops.get_cycle_frequency(); - cycles_per_jiffy = cycles_per_sec; (void)do_div(cycles_per_jiffy, HZ); cycles_per_alarm = cycles_per_sec; -- 2.20.1