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0c95fbb2
cloud-kernel
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体验新版 GitCode,发现更多精彩内容 >>
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0c95fbb2
编写于
11月 10, 2005
作者:
P
Paul Mackerras
浏览文件
操作
浏览文件
下载
差异文件
Merge
git://oak/home/sfr/kernels/iseries/work
上级
49b09853
06a98dba
变更
3
隐藏空白更改
内联
并排
Showing
3 changed file
with
181 addition
and
4 deletion
+181
-4
arch/powerpc/kernel/prom.c
arch/powerpc/kernel/prom.c
+3
-3
arch/powerpc/platforms/iseries/setup.c
arch/powerpc/platforms/iseries/setup.c
+0
-1
include/asm-powerpc/atomic.h
include/asm-powerpc/atomic.h
+178
-0
未找到文件。
arch/powerpc/kernel/prom.c
浏览文件 @
0c95fbb2
...
...
@@ -1080,9 +1080,9 @@ void __init unflatten_device_tree(void)
static
int
__init
early_init_dt_scan_cpus
(
unsigned
long
node
,
const
char
*
uname
,
int
depth
,
void
*
data
)
{
char
*
type
=
of_get_flat_dt_prop
(
node
,
"device_type"
,
NULL
);
u32
*
prop
;
unsigned
long
size
=
0
;
unsigned
long
size
;
char
*
type
=
of_get_flat_dt_prop
(
node
,
"device_type"
,
&
size
);
/* We are scanning "cpu" nodes only */
if
(
type
==
NULL
||
strcmp
(
type
,
"cpu"
)
!=
0
)
...
...
@@ -1108,7 +1108,7 @@ static int __init early_init_dt_scan_cpus(unsigned long node,
#ifdef CONFIG_ALTIVEC
/* Check if we have a VMX and eventually update CPU features */
prop
=
(
u32
*
)
of_get_flat_dt_prop
(
node
,
"ibm,vmx"
,
&
size
);
prop
=
(
u32
*
)
of_get_flat_dt_prop
(
node
,
"ibm,vmx"
,
NULL
);
if
(
prop
&&
(
*
prop
)
>
0
)
{
cur_cpu_spec
->
cpu_features
|=
CPU_FTR_ALTIVEC
;
cur_cpu_spec
->
cpu_user_features
|=
PPC_FEATURE_HAS_ALTIVEC
;
...
...
arch/powerpc/platforms/iseries/setup.c
浏览文件 @
0c95fbb2
...
...
@@ -704,7 +704,6 @@ static void iseries_shared_idle(void)
static
void
iseries_dedicated_idle
(
void
)
{
long
oldval
;
set_thread_flag
(
TIF_POLLING_NRFLAG
);
while
(
1
)
{
...
...
include/asm-powerpc/atomic.h
浏览文件 @
0c95fbb2
...
...
@@ -197,5 +197,183 @@ static __inline__ int atomic_dec_if_positive(atomic_t *v)
#define smp_mb__before_atomic_inc() smp_mb()
#define smp_mb__after_atomic_inc() smp_mb()
#ifdef __powerpc64__
typedef
struct
{
volatile
long
counter
;
}
atomic64_t
;
#define ATOMIC64_INIT(i) { (i) }
#define atomic64_read(v) ((v)->counter)
#define atomic64_set(v,i) (((v)->counter) = (i))
static
__inline__
void
atomic64_add
(
long
a
,
atomic64_t
*
v
)
{
long
t
;
__asm__
__volatile__
(
"1: ldarx %0,0,%3 # atomic64_add
\n
\
add %0,%2,%0
\n
\
stdcx. %0,0,%3
\n
\
bne- 1b"
:
"=&r"
(
t
),
"=m"
(
v
->
counter
)
:
"r"
(
a
),
"r"
(
&
v
->
counter
),
"m"
(
v
->
counter
)
:
"cc"
);
}
static
__inline__
long
atomic64_add_return
(
long
a
,
atomic64_t
*
v
)
{
long
t
;
__asm__
__volatile__
(
EIEIO_ON_SMP
"1: ldarx %0,0,%2 # atomic64_add_return
\n
\
add %0,%1,%0
\n
\
stdcx. %0,0,%2
\n
\
bne- 1b"
ISYNC_ON_SMP
:
"=&r"
(
t
)
:
"r"
(
a
),
"r"
(
&
v
->
counter
)
:
"cc"
,
"memory"
);
return
t
;
}
#define atomic64_add_negative(a, v) (atomic64_add_return((a), (v)) < 0)
static
__inline__
void
atomic64_sub
(
long
a
,
atomic64_t
*
v
)
{
long
t
;
__asm__
__volatile__
(
"1: ldarx %0,0,%3 # atomic64_sub
\n
\
subf %0,%2,%0
\n
\
stdcx. %0,0,%3
\n
\
bne- 1b"
:
"=&r"
(
t
),
"=m"
(
v
->
counter
)
:
"r"
(
a
),
"r"
(
&
v
->
counter
),
"m"
(
v
->
counter
)
:
"cc"
);
}
static
__inline__
long
atomic64_sub_return
(
long
a
,
atomic64_t
*
v
)
{
long
t
;
__asm__
__volatile__
(
EIEIO_ON_SMP
"1: ldarx %0,0,%2 # atomic64_sub_return
\n
\
subf %0,%1,%0
\n
\
stdcx. %0,0,%2
\n
\
bne- 1b"
ISYNC_ON_SMP
:
"=&r"
(
t
)
:
"r"
(
a
),
"r"
(
&
v
->
counter
)
:
"cc"
,
"memory"
);
return
t
;
}
static
__inline__
void
atomic64_inc
(
atomic64_t
*
v
)
{
long
t
;
__asm__
__volatile__
(
"1: ldarx %0,0,%2 # atomic64_inc
\n
\
addic %0,%0,1
\n
\
stdcx. %0,0,%2
\n
\
bne- 1b"
:
"=&r"
(
t
),
"=m"
(
v
->
counter
)
:
"r"
(
&
v
->
counter
),
"m"
(
v
->
counter
)
:
"cc"
);
}
static
__inline__
long
atomic64_inc_return
(
atomic64_t
*
v
)
{
long
t
;
__asm__
__volatile__
(
EIEIO_ON_SMP
"1: ldarx %0,0,%1 # atomic64_inc_return
\n
\
addic %0,%0,1
\n
\
stdcx. %0,0,%1
\n
\
bne- 1b"
ISYNC_ON_SMP
:
"=&r"
(
t
)
:
"r"
(
&
v
->
counter
)
:
"cc"
,
"memory"
);
return
t
;
}
/*
* atomic64_inc_and_test - increment and test
* @v: pointer of type atomic64_t
*
* Atomically increments @v by 1
* and returns true if the result is zero, or false for all
* other cases.
*/
#define atomic64_inc_and_test(v) (atomic64_inc_return(v) == 0)
static
__inline__
void
atomic64_dec
(
atomic64_t
*
v
)
{
long
t
;
__asm__
__volatile__
(
"1: ldarx %0,0,%2 # atomic64_dec
\n
\
addic %0,%0,-1
\n
\
stdcx. %0,0,%2
\n
\
bne- 1b"
:
"=&r"
(
t
),
"=m"
(
v
->
counter
)
:
"r"
(
&
v
->
counter
),
"m"
(
v
->
counter
)
:
"cc"
);
}
static
__inline__
long
atomic64_dec_return
(
atomic64_t
*
v
)
{
long
t
;
__asm__
__volatile__
(
EIEIO_ON_SMP
"1: ldarx %0,0,%1 # atomic64_dec_return
\n
\
addic %0,%0,-1
\n
\
stdcx. %0,0,%1
\n
\
bne- 1b"
ISYNC_ON_SMP
:
"=&r"
(
t
)
:
"r"
(
&
v
->
counter
)
:
"cc"
,
"memory"
);
return
t
;
}
#define atomic64_sub_and_test(a, v) (atomic64_sub_return((a), (v)) == 0)
#define atomic64_dec_and_test(v) (atomic64_dec_return((v)) == 0)
/*
* Atomically test *v and decrement if it is greater than 0.
* The function returns the old value of *v minus 1.
*/
static
__inline__
long
atomic64_dec_if_positive
(
atomic64_t
*
v
)
{
long
t
;
__asm__
__volatile__
(
EIEIO_ON_SMP
"1: ldarx %0,0,%1 # atomic64_dec_if_positive
\n
\
addic. %0,%0,-1
\n
\
blt- 2f
\n
\
stdcx. %0,0,%1
\n
\
bne- 1b"
ISYNC_ON_SMP
"
\n
\
2:"
:
"=&r"
(
t
)
:
"r"
(
&
v
->
counter
)
:
"cc"
,
"memory"
);
return
t
;
}
#endif
/* __powerpc64__ */
#endif
/* __KERNEL__ */
#endif
/* _ASM_POWERPC_ATOMIC_H_ */
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