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authorRichard Weinberger <richard@nod.at>2011-08-18 15:55:11 -0400
committerRichard Weinberger <richard@nod.at>2011-11-02 09:15:37 -0400
commitd0af6cbfa2eb675643cc651114364752e972900b (patch)
treea8ecae20a0c8d709cc655c3c62ccc9b4f7a58e57 /arch/x86
parent73395a0002aa9573ffc8d989587b79663847f705 (diff)
um: merge delay_{32,64}.c
Signed-off-by: Richard Weinberger <richard@nod.at>
Diffstat (limited to 'arch/x86')
-rw-r--r--arch/x86/um/Makefile2
-rw-r--r--arch/x86/um/delay.c (renamed from arch/x86/um/delay_32.c)0
-rw-r--r--arch/x86/um/delay_64.c60
3 files changed, 1 insertions, 61 deletions
diff --git a/arch/x86/um/Makefile b/arch/x86/um/Makefile
index ffe1008a3f43..8fb58400e415 100644
--- a/arch/x86/um/Makefile
+++ b/arch/x86/um/Makefile
@@ -8,7 +8,7 @@ else
8 BITS := 64 8 BITS := 64
9endif 9endif
10 10
11obj-y = bug.o bugs_$(BITS).o delay_$(BITS).o fault.o ksyms.o ldt.o \ 11obj-y = bug.o bugs_$(BITS).o delay.o fault.o ksyms.o ldt.o \
12 ptrace_$(BITS).o ptrace_user.o setjmp_$(BITS).o signal.o \ 12 ptrace_$(BITS).o ptrace_user.o setjmp_$(BITS).o signal.o \
13 stub_$(BITS).o stub_segv.o syscalls_$(BITS).o \ 13 stub_$(BITS).o stub_segv.o syscalls_$(BITS).o \
14 sys_call_table_$(BITS).o sysrq_$(BITS).o tls_$(BITS).o \ 14 sys_call_table_$(BITS).o sysrq_$(BITS).o tls_$(BITS).o \
diff --git a/arch/x86/um/delay_32.c b/arch/x86/um/delay.c
index f3fe1a688f7e..f3fe1a688f7e 100644
--- a/arch/x86/um/delay_32.c
+++ b/arch/x86/um/delay.c
diff --git a/arch/x86/um/delay_64.c b/arch/x86/um/delay_64.c
deleted file mode 100644
index f3fe1a688f7e..000000000000
--- a/arch/x86/um/delay_64.c
+++ /dev/null
@@ -1,60 +0,0 @@
1/*
2 * Copyright (C) 2011 Richard Weinberger <richrd@nod.at>
3 * Mostly copied from arch/x86/lib/delay.c
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
8 */
9
10#include <linux/module.h>
11#include <linux/kernel.h>
12#include <linux/delay.h>
13#include <asm/param.h>
14
15void __delay(unsigned long loops)
16{
17 asm volatile(
18 "test %0,%0\n"
19 "jz 3f\n"
20 "jmp 1f\n"
21
22 ".align 16\n"
23 "1: jmp 2f\n"
24
25 ".align 16\n"
26 "2: dec %0\n"
27 " jnz 2b\n"
28 "3: dec %0\n"
29
30 : /* we don't need output */
31 : "a" (loops)
32 );
33}
34EXPORT_SYMBOL(__delay);
35
36inline void __const_udelay(unsigned long xloops)
37{
38 int d0;
39
40 xloops *= 4;
41 asm("mull %%edx"
42 : "=d" (xloops), "=&a" (d0)
43 : "1" (xloops), "0"
44 (loops_per_jiffy * (HZ/4)));
45
46 __delay(++xloops);
47}
48EXPORT_SYMBOL(__const_udelay);
49
50void __udelay(unsigned long usecs)
51{
52 __const_udelay(usecs * 0x000010c7); /* 2**32 / 1000000 (rounded up) */
53}
54EXPORT_SYMBOL(__udelay);
55
56void __ndelay(unsigned long nsecs)
57{
58 __const_udelay(nsecs * 0x00005); /* 2**32 / 1000000000 (rounded up) */
59}
60EXPORT_SYMBOL(__ndelay);