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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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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>
20 lines
386 B
C
20 lines
386 B
C
/*
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* Machine specific IO port address definition for generic.
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* Written by Osamu Tomita <tomita@cinet.co.jp>
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*/
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#ifndef __ASM_I8253_H
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#define __ASM_I8253_H
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#include <linux/spinlock.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 void setup_pit_timer(void);
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#endif /* __ASM_I8253_H */
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