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Kirill Smelkov
linux
Commits
7c242026
Commit
7c242026
authored
Mar 12, 2002
by
Anton Blanchard
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ppc64: hash_page/flush_hash_page rewrite: reformatting
parent
a073817c
Changes
1
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1 changed file
with
17 additions
and
14 deletions
+17
-14
arch/ppc64/kernel/htab.c
arch/ppc64/kernel/htab.c
+17
-14
No files found.
arch/ppc64/kernel/htab.c
View file @
7c242026
...
...
@@ -846,12 +846,12 @@ int hash_page(unsigned long ea, unsigned long access)
va
=
(
vsid
<<
28
)
|
(
ea
&
0x0fffffff
);
vpn
=
va
>>
PAGE_SHIFT
;
pgdir
=
mm
->
pgd
;
PPCDBG
(
PPCDBG_MM
,
"hash_page ea = 0x%16.16lx, va = 0x%16.16lx
\n
current = 0x%16.16lx, access = %lx
\n
"
,
ea
,
va
,
current
,
access
);
if
(
pgdir
==
NULL
)
{
return
1
;
}
/
* Lock the Linux page table to prevent mmap and kswapd
if
(
pgdir
==
NULL
)
return
1
;
/*
* Lock the Linux page table to prevent mmap and kswapd
* from modifying entries while we search and update
*/
...
...
@@ -1044,7 +1044,6 @@ int hash_page(unsigned long ea, unsigned long access)
void
flush_hash_page
(
unsigned
long
context
,
unsigned
long
ea
,
pte_t
pte
)
{
unsigned
long
vsid
,
vpn
,
va
,
hash
,
secondary
,
slot
,
flags
;
/* Local copy of first doubleword of HPTE */
union
{
unsigned
long
d
;
Hpte_dword0
h
;
...
...
@@ -1063,17 +1062,21 @@ void flush_hash_page(unsigned long context, unsigned long ea, pte_t pte)
hash
=
~
hash
;
slot
=
(
hash
&
htab_data
.
htab_hash_mask
)
*
HPTES_PER_GROUP
;
slot
+=
(
pte_val
(
pte
)
&
_PAGE_GROUP_IX
)
>>
12
;
/* If there is an HPTE for this page it is indexed by slot */
spin_lock_irqsave
(
&
hash_table_lock
,
flags
);
hpte_dw0
.
d
=
ppc_md
.
hpte_getword0
(
slot
);
if
(
(
hpte_dw0
.
h
.
avpn
==
(
vpn
>>
11
)
)
&&
(
hpte_dw0
.
h
.
v
)
&&
(
hpte_dw0
.
h
.
h
==
secondary
)
){
spin_lock_irqsave
(
&
hash_table_lock
,
flags
);
/*
* Id prefer to flush even if our hpte was stolen, but the new
* entry could be bolted - Anton
*/
hpte_dw0
.
d
=
ppc_md
.
hpte_getword0
(
slot
);
if
((
hpte_dw0
.
h
.
avpn
==
(
vpn
>>
11
))
&&
(
hpte_dw0
.
h
.
v
)
&&
(
hpte_dw0
.
h
.
h
==
secondary
)){
/* HPTE matches */
ppc_md
.
hpte_invalidate
(
slot
);
}
spin_unlock_irqrestore
(
&
hash_table_lock
,
flags
);
spin_unlock_irqrestore
(
&
hash_table_lock
,
flags
);
}
int
proc_dol2crvec
(
ctl_table
*
table
,
int
write
,
struct
file
*
filp
,
...
...
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