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13f939b5
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linux
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体验新版 GitCode,发现更多精彩内容 >>
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13f939b5
编写于
2月 26, 2006
作者:
L
Linus Torvalds
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差异文件
Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6
上级
add2b6fd
7abea921
变更
4
隐藏空白更改
内联
并排
Showing
4 changed file
with
111 addition
and
13 deletion
+111
-13
arch/sparc64/kernel/setup.c
arch/sparc64/kernel/setup.c
+2
-0
arch/sparc64/kernel/smp.c
arch/sparc64/kernel/smp.c
+19
-9
include/asm-sparc64/futex.h
include/asm-sparc64/futex.h
+84
-4
include/asm-sparc64/smp.h
include/asm-sparc64/smp.h
+6
-0
未找到文件。
arch/sparc64/kernel/setup.c
浏览文件 @
13f939b5
...
...
@@ -542,6 +542,8 @@ void __init setup_arch(char **cmdline_p)
}
#endif
smp_setup_cpu_possible_map
();
paging_init
();
}
...
...
arch/sparc64/kernel/smp.c
浏览文件 @
13f939b5
...
...
@@ -1079,18 +1079,12 @@ int setup_profiling_timer(unsigned int multiplier)
return
0
;
}
/* Constrain the number of cpus to max_cpus. */
void
__init
smp_prepare_cpus
(
unsigned
int
max_cpus
)
{
int
instance
,
mid
;
instance
=
0
;
while
(
!
cpu_find_by_instance
(
instance
,
NULL
,
&
mid
))
{
if
(
mid
<
max_cpus
)
cpu_set
(
mid
,
phys_cpu_present_map
);
instance
++
;
}
if
(
num_possible_cpus
()
>
max_cpus
)
{
int
instance
,
mid
;
instance
=
0
;
while
(
!
cpu_find_by_instance
(
instance
,
NULL
,
&
mid
))
{
if
(
mid
!=
boot_cpu_id
)
{
...
...
@@ -1105,6 +1099,22 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
smp_store_cpu_info
(
boot_cpu_id
);
}
/* Set this up early so that things like the scheduler can init
* properly. We use the same cpu mask for both the present and
* possible cpu map.
*/
void
__init
smp_setup_cpu_possible_map
(
void
)
{
int
instance
,
mid
;
instance
=
0
;
while
(
!
cpu_find_by_instance
(
instance
,
NULL
,
&
mid
))
{
if
(
mid
<
NR_CPUS
)
cpu_set
(
mid
,
phys_cpu_present_map
);
instance
++
;
}
}
void
__devinit
smp_prepare_boot_cpu
(
void
)
{
if
(
hard_smp_processor_id
()
>=
NR_CPUS
)
{
...
...
include/asm-sparc64/futex.h
浏览文件 @
13f939b5
#ifndef _
ASM
_FUTEX_H
#define _
ASM
_FUTEX_H
#ifndef _
SPARC64
_FUTEX_H
#define _
SPARC64
_FUTEX_H
#include <asm-generic/futex.h>
#include <linux/futex.h>
#include <asm/errno.h>
#include <asm/system.h>
#include <asm/uaccess.h>
#endif
#define __futex_cas_op(insn, ret, oldval, uaddr, oparg) \
__asm__ __volatile__( \
"\n1: lduwa [%3] %%asi, %2\n" \
" " insn "\n" \
"2: casa [%3] %%asi, %2, %1\n" \
" cmp %2, %1\n" \
" bne,pn %%icc, 1b\n" \
" mov 0, %0\n" \
"3:\n" \
" .section .fixup,#alloc,#execinstr\n" \
" .align 4\n" \
"4: ba 3b\n" \
" mov %5, %0\n" \
" .previous\n" \
" .section __ex_table,#alloc\n" \
" .align 4\n" \
" .word 1b, 4b\n" \
" .word 2b, 4b\n" \
" .previous\n" \
: "=&r" (ret), "=&r" (oldval), "=&r" (tem) \
: "r" (uaddr), "r" (oparg), "i" (-EFAULT) \
: "memory")
static
inline
int
futex_atomic_op_inuser
(
int
encoded_op
,
int
__user
*
uaddr
)
{
int
op
=
(
encoded_op
>>
28
)
&
7
;
int
cmp
=
(
encoded_op
>>
24
)
&
15
;
int
oparg
=
(
encoded_op
<<
8
)
>>
20
;
int
cmparg
=
(
encoded_op
<<
20
)
>>
20
;
int
oldval
=
0
,
ret
,
tem
;
if
(
unlikely
(
!
access_ok
(
VERIFY_WRITE
,
uaddr
,
sizeof
(
int
))))
return
-
EFAULT
;
if
(
unlikely
((((
unsigned
long
)
uaddr
)
&
0x3UL
)))
return
-
EINVAL
;
if
(
encoded_op
&
(
FUTEX_OP_OPARG_SHIFT
<<
28
))
oparg
=
1
<<
oparg
;
inc_preempt_count
();
switch
(
op
)
{
case
FUTEX_OP_SET
:
__futex_cas_op
(
"mov
\t
%4, %1"
,
ret
,
oldval
,
uaddr
,
oparg
);
break
;
case
FUTEX_OP_ADD
:
__futex_cas_op
(
"add
\t
%2, %4, %1"
,
ret
,
oldval
,
uaddr
,
oparg
);
break
;
case
FUTEX_OP_OR
:
__futex_cas_op
(
"or
\t
%2, %4, %1"
,
ret
,
oldval
,
uaddr
,
oparg
);
break
;
case
FUTEX_OP_ANDN
:
__futex_cas_op
(
"and
\t
%2, %4, %1"
,
ret
,
oldval
,
uaddr
,
oparg
);
break
;
case
FUTEX_OP_XOR
:
__futex_cas_op
(
"xor
\t
%2, %4, %1"
,
ret
,
oldval
,
uaddr
,
oparg
);
break
;
default:
ret
=
-
ENOSYS
;
}
dec_preempt_count
();
if
(
!
ret
)
{
switch
(
cmp
)
{
case
FUTEX_OP_CMP_EQ
:
ret
=
(
oldval
==
cmparg
);
break
;
case
FUTEX_OP_CMP_NE
:
ret
=
(
oldval
!=
cmparg
);
break
;
case
FUTEX_OP_CMP_LT
:
ret
=
(
oldval
<
cmparg
);
break
;
case
FUTEX_OP_CMP_GE
:
ret
=
(
oldval
>=
cmparg
);
break
;
case
FUTEX_OP_CMP_LE
:
ret
=
(
oldval
<=
cmparg
);
break
;
case
FUTEX_OP_CMP_GT
:
ret
=
(
oldval
>
cmparg
);
break
;
default:
ret
=
-
ENOSYS
;
}
}
return
ret
;
}
#endif
/* !(_SPARC64_FUTEX_H) */
include/asm-sparc64/smp.h
浏览文件 @
13f939b5
...
...
@@ -66,8 +66,14 @@ static __inline__ int hard_smp_processor_id(void)
#define raw_smp_processor_id() (current_thread_info()->cpu)
extern
void
smp_setup_cpu_possible_map
(
void
);
#endif
/* !(__ASSEMBLY__) */
#else
#define smp_setup_cpu_possible_map() do { } while (0)
#endif
/* !(CONFIG_SMP) */
#define NO_PROC_ID 0xFF
...
...
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