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Kirill Smelkov
linux
Commits
8a57a00b
Commit
8a57a00b
authored
Feb 13, 2002
by
Richard Henderson
Committed by
Richard Henderson
Feb 13, 2002
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Plain Diff
Follow mingo's scheduling changes for x86.
parent
b7ac5241
Changes
4
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Inline
Side-by-side
Showing
4 changed files
with
28 additions
and
33 deletions
+28
-33
arch/alpha/kernel/entry.S
arch/alpha/kernel/entry.S
+2
-4
include/asm-alpha/bitops.h
include/asm-alpha/bitops.h
+21
-0
include/asm-alpha/mmu_context.h
include/asm-alpha/mmu_context.h
+0
-22
include/asm-alpha/system.h
include/asm-alpha/system.h
+5
-7
No files found.
arch/alpha/kernel/entry.S
View file @
8a57a00b
...
...
@@ -489,10 +489,8 @@ alpha_switch_to:
.
prologue
0
bsr
$
1
,
do_switch_stack
call_pal
PAL_swpctx
unop
bsr
$
1
,
undo_switch_stack
lda
$
8
,
0x3fff
mov
$
17
,
$
0
bsr
$
1
,
undo_switch_stack
bic
$
30
,
$
8
,
$
8
ret
$
31
,(
$
26
),
1
.
end
alpha_switch_to
...
...
@@ -503,7 +501,7 @@ alpha_switch_to:
.
ent
ret_from_fork
ret_from_fork
:
lda
$
26
,
ret_from_sys_call
mov
$
0
,
$
16
mov
$
17
,
$
16
jmp
$
31
,
schedule_tail
.
end
ret_from_fork
#endif
...
...
include/asm-alpha/bitops.h
View file @
8a57a00b
...
...
@@ -460,6 +460,27 @@ find_next_bit(void * addr, unsigned long size, unsigned long offset)
#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 set.
*/
static
inline
unsigned
long
sched_find_first_bit
(
unsigned
long
b
[
3
])
{
unsigned
long
b0
=
b
[
0
],
b1
=
b
[
1
],
b2
=
b
[
2
];
unsigned
long
ofs
;
ofs
=
(
b1
?
64
:
128
);
b1
=
(
b1
?
b1
:
b2
);
ofs
=
(
b0
?
0
:
ofs
);
b0
=
(
b0
?
b0
:
b1
);
return
__ffs
(
b0
)
+
ofs
;
}
#define ext2_set_bit __test_and_set_bit
#define ext2_clear_bit __test_and_clear_bit
#define ext2_test_bit test_bit
...
...
include/asm-alpha/mmu_context.h
View file @
8a57a00b
...
...
@@ -21,28 +21,6 @@
#include <asm/io.h>
#endif
/* ??? This does not belong here. */
/*
* 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
)
{
unsigned
long
b0
=
b
[
0
],
b1
=
b
[
1
],
b2
=
b
[
2
];
unsigned
long
offset
=
128
;
if
(
unlikely
(
b0
|
b1
))
{
b2
=
(
b0
?
b0
:
b1
);
offset
=
(
b0
?
0
:
64
);
}
return
__ffs
(
b2
)
+
offset
;
}
extern
inline
unsigned
long
__reload_thread
(
struct
pcb_struct
*
pcb
)
...
...
include/asm-alpha/system.h
View file @
8a57a00b
...
...
@@ -131,15 +131,13 @@ extern void halt(void) __attribute__((noreturn));
#define __halt() __asm__ __volatile__ ("call_pal %0 #halt" : : "i" (PAL_halt))
#define prepare_to_switch() do { } while(0)
#define switch_to(prev,next,last) \
do { \
unsigned long pcbb; \
pcbb = virt_to_phys(&(next)->thread_info->pcb); \
(last) = alpha_switch_to(pcbb, (prev)); \
check_mmu_context(); \
#define switch_to(prev,next) \
do { \
alpha_switch_to(virt_to_phys(&(next)->thread_info->pcb), (prev)); \
check_mmu_context(); \
} while (0)
extern
struct
task_struct
*
alpha_switch_to
(
unsigned
long
,
struct
task_struct
*
);
extern
void
alpha_switch_to
(
unsigned
long
,
struct
task_struct
*
);
#define mb() \
__asm__ __volatile__("mb": : :"memory")
...
...
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