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ced918eb74
i8253_lock needs to be a real spinlock in preempt-rt, i.e. it can not be converted to a sleeping lock. Convert it to raw_spinlock and fix up all users. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Ralf Baechle <ralf@linux-mips.org> Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Acked-by: Takashi Iwai <tiwai@suse.de> Cc: Jens Axboe <jens.axboe@oracle.com> LKML-Reference: <20100217163751.030764372@linutronix.de>
19 lines
352 B
C
19 lines
352 B
C
#ifndef _ASM_X86_I8253_H
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#define _ASM_X86_I8253_H
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/* i8253A PIT registers */
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#define PIT_MODE 0x43
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#define PIT_CH0 0x40
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#define PIT_CH2 0x42
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extern raw_spinlock_t i8253_lock;
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extern struct clock_event_device *global_clock_event;
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extern void setup_pit_timer(void);
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#define inb_pit inb_p
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#define outb_pit outb_p
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#endif /* _ASM_X86_I8253_H */
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