i386: prepare shared lib/delay.c

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 0 insertions, 103 deletions

diff --git a/arch/i386/lib/delay.c b/arch/i386/lib/delay.c
deleted file mode 100644
index f6edb11364df..000000000000
--- a/arch/i386/lib/delay.c
+++ /dev/null
@@ -1,103 +0,0 @@
-/*
- *      Precise Delay Loops for i386
- *
- *      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. The additional
- *      jump magic is needed to get the timing stable on all the CPU's
- *      we have to worry about.
- */
-
-#include <linux/module.h>
-#include <linux/sched.h>
-#include <linux/delay.h>
-
-#include <asm/processor.h>
-#include <asm/delay.h>
-#include <asm/timer.h>
-
-#ifdef CONFIG_SMP
-# include <asm/smp.h>
-#endif
-
-/* simple loop based delay: */
-static void delay_loop(unsigned long loops)
-{
-        int d0;
-
-        __asm__ __volatile__(
-                "\tjmp 1f\n"
-                ".align 16\n"
-                "1:\tjmp 2f\n"
-                ".align 16\n"
-                "2:\tdecl %0\n\tjns 2b"
-                :"=&a" (d0)
-                :"0" (loops));
-}
-
-/* TSC based delay: */
-static void delay_tsc(unsigned long loops)
-{
-        unsigned long bclock, now;
-
-        rdtscl(bclock);
-        do {
-                rep_nop();
-                rdtscl(now);
-        } while ((now-bclock) < loops);
-}
-
-/*
- * Since we calibrate only once at boot, this
- * function should be set once at boot and not changed
- */
-static void (*delay_fn)(unsigned long) = delay_loop;
-
-void use_tsc_delay(void)
-{
-        delay_fn = delay_tsc;
-}
-
-int read_current_timer(unsigned long *timer_val)
-{
-        if (delay_fn == delay_tsc) {
-                rdtscl(*timer_val);
-                return 0;
-        }
-        return -1;
-}
-
-void __delay(unsigned long loops)
-{
-        delay_fn(loops);
-}
-
-inline void __const_udelay(unsigned long xloops)
-{
-        int d0;
-
-        xloops *= 4;
-        __asm__("mull %0"
-                :"=d" (xloops), "=&a" (d0)
-                :"1" (xloops), "0"
-                (cpu_data[raw_smp_processor_id()].loops_per_jiffy * (HZ/4)));
-
-        __delay(++xloops);
-}
-
-void __udelay(unsigned long usecs)
-{
-        __const_udelay(usecs * 0x000010c7); /* 2**32 / 1000000 (rounded up) */
-}
-
-void __ndelay(unsigned long nsecs)
-{
-        __const_udelay(nsecs * 0x00005); /* 2**32 / 1000000000 (rounded up) */
-}
-
-EXPORT_SYMBOL(__delay);
-EXPORT_SYMBOL(__const_udelay);
-EXPORT_SYMBOL(__udelay);
-EXPORT_SYMBOL(__ndelay);