From 5fd861b682785f650114f4df53060d1be7fedecd Mon Sep 17 00:00:00 2001
From: Bodo Stroesser <bstroesser@fujitsu-siemens.com>
Date: Thu, 5 May 2005 16:15:37 -0700
Subject: [PATCH] uml: s390 preparation, delay moved to arch

s390 has fast read access to realtime clock (nanosecond resolution).  So it
makes sense to have an arch-specific implementation not only of __delay, but
__udelay also.

Signed-off-by: Bodo Stroesser <bstroesser@fujitsu-siemens.com>
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 arch/um/sys-x86_64/delay.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

(limited to 'arch/um/sys-x86_64')

diff --git a/arch/um/sys-x86_64/delay.c b/arch/um/sys-x86_64/delay.c
index f3b5187942b4..651332aeec22 100644
--- a/arch/um/sys-x86_64/delay.c
+++ b/arch/um/sys-x86_64/delay.c
@@ -5,7 +5,9 @@
  * Licensed under the GPL
  */
 
+#include "linux/delay.h"
 #include "asm/processor.h"
+#include "asm/param.h"
 
 void __delay(unsigned long loops)
 {
@@ -14,6 +16,22 @@ void __delay(unsigned long loops)
 	for(i = 0; i < loops; i++) ;
 }
 
+void __udelay(unsigned long usecs)
+{
+	int i, n;
+
+	n = (loops_per_jiffy * HZ * usecs) / MILLION;
+	for(i=0;i<n;i++) ;
+}
+
+void __const_udelay(unsigned long usecs)
+{
+	int i, n;
+
+	n = (loops_per_jiffy * HZ * usecs) / MILLION;
+	for(i=0;i<n;i++) ;
+}
+
 /*
  * Overrides for Emacs so that we follow Linus's tabbing style.
  * Emacs will notice this stuff at the end of the file and automatically
-- 
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