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 <zach at vmware.com>
diff -r 5d41588419ab arch/i386/Kconfig
--- a/arch/i386/Kconfig Tue Feb 27 17:24:55 2007 -0800
+++ b/arch/i386/Kconfig Tue Feb 27 17:25:44 2007 -0800
@@ -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 -r 5d41588419ab arch/i386/kernel/vmi.c
--- a/arch/i386/kernel/vmi.c Tue Feb 27 17:24:55 2007 -0800
+++ b/arch/i386/kernel/vmi.c Tue Feb 27 18:46:26 2007 -0800
@@ -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 -r 5d41588419ab arch/i386/kernel/vmitime.c
--- a/arch/i386/kernel/vmitime.c Tue Feb 27 17:24:55 2007 -0800
+++ b/arch/i386/kernel/vmitime.c Tue Feb 27 18:47:51 2007 -0800
@@ -153,13 +153,6 @@ static void vmi_get_wallclock_ts(struct
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;
