[PATCH] Timer interrupt cleanups [0/3]

[Martin J. Bligh]

Well, I tested these on the NUMA-Q and they seem to work.
Basically (as discussed previously) they rename the stuff off
the global timer to global_timer_* and the stuff off the
local timer to local_timer_*. Then I tried to clean up the
cross-calling ifdef madness. There are various corner cases,
so it's possible I screwed something up, but I think it's OK.

Original calling graph looked like this, I'll update this for
each patch to show what happens. Feel free to flame me, everyone.

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Assuming we're SMP with a local apic timer all firing away:

timer_interrupt
	do_timer_interrupt
		{ack the interrupt}
		do_timer_interrupt_hook
			do_timer
				jiffies_64++;
				update_times
		{update CMOS clock}    (In the interrupt still ??!!)

apic_timer_interrupt
	smp_apic_timer_interrupt
		{ack the interrupt}
		smp_local_timer_interrupt
			x86_do_profile
			update_process_times

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On UP with local apic timer:

timer_interrupt
	do_timer_interrupt
		{ack the interrupt}
		do_timer_interrupt_hook
			do_timer
				jiffies_64++;
				update_process_times
				update_times
		{update CMOS clock}    (In the interrupt still ??!!)

apic_timer_interrupt
	smp_apic_timer_interrupt
		{ack the interrupt}
		smp_local_timer_interrupt
			x86_do_profile

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On a UP 386 with stale crusty breadcrumbs, and no local timer:
	
timer_interrupt
	do_timer_interrupt
		{ack the interrupt}
		do_timer_interrupt_hook
			do_timer
				jiffies_64++;
				update_process_times
				update_times
			x86_do_profile()
		{update CMOS clock}    (In the interrupt still ??!!)

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