e9e2cdb412
Add clockevent drivers for i386: lapic (local) and PIT/HPET (global). Update the timer IRQ to call into the PIT/HPET driver's event handler and the lapic-timer IRQ to call into the lapic clockevent driver. The assignement of timer functionality is delegated to the core framework code and replaces the compile and runtime evalution in do_timer_interrupt_hook() Use the clockevents broadcast support and implement the lapic_broadcast function for ACPI. No changes to existing functionality. [ kdump fix from Vivek Goyal <vgoyal@in.ibm.com> ] [ fixes based on review feedback from Arjan van de Ven <arjan@infradead.org> ] Cleanups-from: Adrian Bunk <bunk@stusta.de> Build-fixes-from: Andrew Morton <akpm@osdl.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Cc: john stultz <johnstul@us.ibm.com> Cc: Roman Zippel <zippel@linux-m68k.org> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
21 lines
441 B
C
21 lines
441 B
C
#ifndef __ASM_I8253_H__
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#define __ASM_I8253_H__
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#include <linux/clockchips.h>
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extern spinlock_t i8253_lock;
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extern struct clock_event_device *global_clock_event;
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/**
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* pit_interrupt_hook - hook into timer tick
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* @regs: standard registers from interrupt
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*
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* Call the global clock event handler.
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**/
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static inline void pit_interrupt_hook(void)
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{
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global_clock_event->event_handler(global_clock_event);
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}
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#endif /* __ASM_I8253_H__ */
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