diff options
Diffstat (limited to 'arch/x86_64/lib/delay_64.c')
-rw-r--r-- | arch/x86_64/lib/delay_64.c | 57 |
1 files changed, 0 insertions, 57 deletions
diff --git a/arch/x86_64/lib/delay_64.c b/arch/x86_64/lib/delay_64.c deleted file mode 100644 index 2dbebd308347..000000000000 --- a/arch/x86_64/lib/delay_64.c +++ /dev/null @@ -1,57 +0,0 @@ -/* - * Precise Delay Loops for x86-64 - * - * Copyright (C) 1993 Linus Torvalds - * Copyright (C) 1997 Martin Mares <mj@atrey.karlin.mff.cuni.cz> - * - * The __delay function must _NOT_ be inlined as its execution time - * depends wildly on alignment on many x86 processors. - */ - -#include <linux/module.h> -#include <linux/sched.h> -#include <linux/delay.h> -#include <asm/delay.h> -#include <asm/msr.h> - -#ifdef CONFIG_SMP -#include <asm/smp.h> -#endif - -int read_current_timer(unsigned long *timer_value) -{ - rdtscll(*timer_value); - return 0; -} - -void __delay(unsigned long loops) -{ - unsigned bclock, now; - - rdtscl(bclock); - do - { - rep_nop(); - rdtscl(now); - } - while((now-bclock) < loops); -} -EXPORT_SYMBOL(__delay); - -inline void __const_udelay(unsigned long xloops) -{ - __delay(((xloops * HZ * cpu_data[raw_smp_processor_id()].loops_per_jiffy) >> 32) + 1); -} -EXPORT_SYMBOL(__const_udelay); - -void __udelay(unsigned long usecs) -{ - __const_udelay(usecs * 0x000010c7); /* 2**32 / 1000000 (rounded up) */ -} -EXPORT_SYMBOL(__udelay); - -void __ndelay(unsigned long nsecs) -{ - __const_udelay(nsecs * 0x00005); /* 2**32 / 1000000000 (rounded up) */ -} -EXPORT_SYMBOL(__ndelay); |