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Kirill Smelkov
linux
Commits
e496368c
Commit
e496368c
authored
Feb 12, 2002
by
Ingo Molnar
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move sched_find_first_bit() from mmu_context.h to bitops.h, it belongs there.
parent
09e41388
Changes
2
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2 changed files
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19 additions
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18 deletions
+19
-18
include/asm-i386/bitops.h
include/asm-i386/bitops.h
+19
-0
include/asm-i386/mmu_context.h
include/asm-i386/mmu_context.h
+0
-18
No files found.
include/asm-i386/bitops.h
View file @
e496368c
...
@@ -415,6 +415,25 @@ static __inline__ unsigned long __ffs(unsigned long word)
...
@@ -415,6 +415,25 @@ static __inline__ unsigned long __ffs(unsigned long word)
#ifdef __KERNEL__
#ifdef __KERNEL__
/*
* Every architecture must define this function. It's the fastest
* way of searching a 140-bit bitmap where the first 100 bits are
* unlikely to be set. It's guaranteed that at least one of the 140
* bits is cleared.
*/
static
inline
int
sched_find_first_bit
(
unsigned
long
*
b
)
{
if
(
unlikely
(
b
[
0
]))
return
__ffs
(
b
[
0
]);
if
(
unlikely
(
b
[
1
]))
return
__ffs
(
b
[
1
])
+
32
;
if
(
unlikely
(
b
[
2
]))
return
__ffs
(
b
[
2
])
+
64
;
if
(
b
[
3
])
return
__ffs
(
b
[
3
])
+
96
;
return
__ffs
(
b
[
4
])
+
128
;
}
/**
/**
* ffs - find first bit set
* ffs - find first bit set
* @x: the word to search
* @x: the word to search
...
...
include/asm-i386/mmu_context.h
View file @
e496368c
...
@@ -6,24 +6,6 @@
...
@@ -6,24 +6,6 @@
#include <asm/atomic.h>
#include <asm/atomic.h>
#include <asm/pgalloc.h>
#include <asm/pgalloc.h>
/*
* Every architecture must define this function. It's the fastest
* way of searching a 140-bit bitmap where the first 100 bits are
* unlikely to be set. It's guaranteed that at least one of the 140
* bits is cleared.
*/
static
inline
int
sched_find_first_bit
(
unsigned
long
*
b
)
{
if
(
unlikely
(
b
[
0
]))
return
__ffs
(
b
[
0
]);
if
(
unlikely
(
b
[
1
]))
return
__ffs
(
b
[
1
])
+
32
;
if
(
unlikely
(
b
[
2
]))
return
__ffs
(
b
[
2
])
+
64
;
if
(
b
[
3
])
return
__ffs
(
b
[
3
])
+
96
;
return
__ffs
(
b
[
4
])
+
128
;
}
/*
/*
* possibly do the LDT unload here?
* possibly do the LDT unload here?
*/
*/
...
...
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