John Baldwin e8ce55117b Use the local APIC timer to drive the various kernel clocks on SMP machines ... rather than forwarding interrupts from the clock devices around using IPIs: - Add an IDT vector that pushes a clock frame and calls lapic_handle_timer(). - Add functions to program the local APIC timer including setting the divisor, and setting up the timer to either down a periodic countdown or one-shot countdown. - Add a lapic_setup_clock() function that the BSP calls from cpu_init_clocks() to setup the local APIC timer if it is going to be used. The setup uses a one-shot countdown to calibrate the timer. We then program the timer on each CPU to fire at a frequency of hz * 3. stathz is defined as freq / 23 (hz * 3 / 23), and profhz is defined as freq / 2 (hz * 3 / 2). This gives the clocks relatively prime divisors while keeping a low LCM for the frequency of the clock interrupts. Thanks to Peter Jeremy for suggesting this approach. - Remove the hardclock and statclock forwarding code including the two associated IPIs. The bitmap IPI handler has now effectively degenerated to just IPI_AST. - When the local APIC timer is used we don't turn the RTC on at all, but we still enable interrupts on the ISA timer 0 (i8254) for timecounting purposes.		2005-02-08 20:25:07 +00:00
..
pc	These appear to be unused in our tree, so remove them.	2005-01-05 20:50:31 +00:00
_inttypes.h
_limits.h	/* -> /*- for copyright notices, minor format tweaks as necessary	2005-01-06 22:18:23 +00:00
_stdint.h
_types.h
acpica_machdep.h	Move the code for halting the CPU (acpi_cpu_c1) into machdep files.	2004-10-11 05:39:15 +00:00
apicreg.h	/* -> /*- for copyright notices, minor format tweaks as necessary	2005-01-06 22:18:23 +00:00
apicvar.h	Use the local APIC timer to drive the various kernel clocks on SMP machines	2005-02-08 20:25:07 +00:00
apm_bios.h	/* -> /*- for copyright notices, minor format tweaks as necessary	2005-01-06 22:18:23 +00:00
apm_segments.h	/* -> /*- for copyright notices, minor format tweaks as necessary	2005-01-06 22:18:23 +00:00
asm.h
asmacros.h
atomic.h	Initiate deorbit burn sequence for 80386 support in FreeBSD: Remove	2004-11-16 20:42:32 +00:00
bootinfo.h
bus_at386.h	/* -> /*- for copyright notices, minor format tweaks as necessary	2005-01-06 22:18:23 +00:00
bus_dma.h	Introduce bus_dmamap_load_mbuf_sg(). Instead of taking a callback arg, this	2005-01-07 07:57:18 +00:00
bus_memio.h	/* -> /*- for copyright notices, minor format tweaks as necessary	2005-01-06 22:18:23 +00:00
bus_pc98.h	/* -> /*- for copyright notices, minor format tweaks as necessary	2005-01-06 22:18:23 +00:00
bus_pio.h	/* -> /*- for copyright notices, minor format tweaks as necessary	2005-01-06 22:18:23 +00:00
bus.h
clock.h	/* -> /*- for copyright notices, minor format tweaks as necessary	2005-01-06 22:18:23 +00:00
cpu.h	Initiate deorbit burn sequence for 80386 support in FreeBSD: Remove	2004-11-16 20:42:32 +00:00
cpufunc.h
cputypes.h	/* -> /*- for copyright notices, minor format tweaks as necessary	2005-01-06 22:18:23 +00:00
critical.h
cserial.h	/* -> /*- for copyright notices, minor format tweaks as necessary	2005-01-06 22:18:23 +00:00
db_machdep.h	/* -> /*- for copyright notices, minor format tweaks as necessary	2005-01-06 22:18:23 +00:00
elan_mmcr.h	Expand indirect reference to BSD license with the current one.	2005-01-06 22:05:28 +00:00
elf.h
endian.h	Initiate deorbit burn sequence for 80386 support in FreeBSD: Remove	2004-11-16 20:42:32 +00:00
exec.h
float.h	/* -> /*- for copyright notices, minor format tweaks as necessary	2005-01-06 22:18:23 +00:00
floatingpoint.h
frame.h
gdb_machdep.h	/* -> /*- for copyright notices, minor format tweaks as necessary	2005-01-06 22:18:23 +00:00
i4b_cause.h	/* -> /*- for copyright notices, minor format tweaks as necessary	2005-01-06 22:18:23 +00:00
i4b_debug.h	/* -> /*- for copyright notices, minor format tweaks as necessary	2005-01-06 22:18:23 +00:00
i4b_ioctl.h	/* -> /*- for copyright notices, minor format tweaks as necessary	2005-01-06 22:18:23 +00:00
i4b_rbch_ioctl.h	/* -> /*- for copyright notices, minor format tweaks as necessary	2005-01-06 22:18:23 +00:00
i4b_tel_ioctl.h	/* -> /*- for copyright notices, minor format tweaks as necessary	2005-01-06 22:18:23 +00:00
i4b_trace.h	/* -> /*- for copyright notices, minor format tweaks as necessary	2005-01-06 22:18:23 +00:00
ieeefp.h
if_wl_wavelan.h	/* -> /*- for copyright notices, minor format tweaks as necessary	2005-01-06 22:18:23 +00:00
in_cksum.h
intr_machdep.h	Tweak the ELCR support slightly. Explicitly probe the ELCR during boot	2005-01-18 20:24:47 +00:00
ioctl_bt848.h
ioctl_meteor.h
iodev.h
kdb.h	/* -> /*- for copyright notices, minor format tweaks as necessary	2005-01-06 22:18:23 +00:00
legacyvar.h
limits.h	/* -> /*- for copyright notices, minor format tweaks as necessary	2005-01-06 22:18:23 +00:00
md_var.h
memdev.h
metadata.h	/* -> /*- for copyright notices, minor format tweaks as necessary	2005-01-06 22:18:23 +00:00
mp_watchdog.h
mptable.h	/* -> /*- for copyright notices, minor format tweaks as necessary	2005-01-06 22:18:23 +00:00
mutex.h
npx.h
param.h	Remove UAREA_PAGES.	2004-11-20 02:29:50 +00:00
pcaudioio.h
pcb_ext.h
pcb.h
pci_cfgreg.h	/* -> /*- for copyright notices, minor format tweaks as necessary	2005-01-06 22:18:23 +00:00
pcpu.h
pcvt_ioctl.h	/* -> /*- for copyright notices, minor format tweaks as necessary	2005-01-06 22:18:23 +00:00
pecoff_machdep.h
perfmon.h	/* -> /*- for copyright notices, minor format tweaks as necessary	2005-01-06 22:18:23 +00:00
pmap.h	/* -> /*- for copyright notices, minor format tweaks as necessary	2005-01-06 22:18:23 +00:00
privatespace.h
proc.h	/* -> /*- for copyright notices, minor format tweaks as necessary	2005-01-06 22:18:23 +00:00
profile.h	/* -> /*- for copyright notices, minor format tweaks as necessary	2005-01-06 22:18:23 +00:00
psl.h
ptrace.h	/* -> /*- for copyright notices, minor format tweaks as necessary	2005-01-06 22:18:23 +00:00
reg.h
reloc.h
resource.h	/* -> /*- for copyright notices, minor format tweaks as necessary	2005-01-06 22:18:23 +00:00
runq.h	/* -> /*- for copyright notices, minor format tweaks as necessary	2005-01-06 22:18:23 +00:00
segments.h
setjmp.h
sf_buf.h
sigframe.h
signal.h	/* -> /*- for copyright notices, minor format tweaks as necessary	2005-01-06 22:18:23 +00:00
smapi.h
smp.h	Use the local APIC timer to drive the various kernel clocks on SMP machines	2005-02-08 20:25:07 +00:00
smptests.h	/* -> /*- for copyright notices, minor format tweaks as necessary	2005-01-06 22:18:23 +00:00
speaker.h
specialreg.h
stdarg.h
sysarch.h	o Move copyin()/copyout() out of i386_{get,set}_ldt() and	2005-01-26 13:59:46 +00:00
trap.h
tss.h
ucontext.h
varargs.h
vm86.h
vmparam.h