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Kirill Smelkov
linux
Commits
f6adf918
Commit
f6adf918
authored
Jun 19, 2002
by
William Lee Irwin III
Committed by
Linus Torvalds
Jun 19, 2002
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[PATCH] Re: convert BAD_RANGE() to an inline function
parent
9a89d96d
Changes
1
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Showing
1 changed file
with
17 additions
and
13 deletions
+17
-13
mm/page_alloc.c
mm/page_alloc.c
+17
-13
No files found.
mm/page_alloc.c
View file @
f6adf918
...
...
@@ -44,14 +44,18 @@ static int zone_balance_min[MAX_NR_ZONES] __initdata = { 20 , 20, 20, };
static
int
zone_balance_max
[
MAX_NR_ZONES
]
__initdata
=
{
255
,
255
,
255
,
};
/*
* Temporary debugging check.
* Temporary debugging check
for pages not lying within a given zone
.
*/
#define BAD_RANGE(zone, page) \
( \
(((page) - mem_map) >= ((zone)->zone_start_mapnr+(zone)->size)) \
|| (((page) - mem_map) < (zone)->zone_start_mapnr) \
|| ((zone) != page_zone(page)) \
)
static
inline
int
bad_range
(
zone_t
*
zone
,
struct
page
*
page
)
{
if
(
page
-
mem_map
>=
zone
->
zone_start_mapnr
+
zone
->
size
)
return
1
;
if
(
page
-
mem_map
<
zone
->
zone_start_mapnr
)
return
1
;
if
(
zone
!=
page_zone
(
page
))
return
1
;
return
0
;
}
/*
* Freeing function for a buddy system allocator.
...
...
@@ -135,9 +139,9 @@ static void __free_pages_ok (struct page *page, unsigned int order)
*/
buddy1
=
base
+
(
page_idx
^
-
mask
);
buddy2
=
base
+
page_idx
;
if
(
BAD_RANGE
(
zone
,
buddy1
))
if
(
bad_range
(
zone
,
buddy1
))
BUG
();
if
(
BAD_RANGE
(
zone
,
buddy2
))
if
(
bad_range
(
zone
,
buddy2
))
BUG
();
list_del
(
&
buddy1
->
list
);
...
...
@@ -171,7 +175,7 @@ static inline struct page * expand (zone_t *zone, struct page *page,
unsigned
long
size
=
1
<<
high
;
while
(
high
>
low
)
{
if
(
BAD_RANGE
(
zone
,
page
))
if
(
bad_range
(
zone
,
page
))
BUG
();
area
--
;
high
--
;
...
...
@@ -181,7 +185,7 @@ static inline struct page * expand (zone_t *zone, struct page *page,
index
+=
size
;
page
+=
size
;
}
if
(
BAD_RANGE
(
zone
,
page
))
if
(
bad_range
(
zone
,
page
))
BUG
();
return
page
;
}
...
...
@@ -204,7 +208,7 @@ static struct page * rmqueue(zone_t *zone, unsigned int order)
unsigned
int
index
;
page
=
list_entry
(
curr
,
struct
page
,
list
);
if
(
BAD_RANGE
(
zone
,
page
))
if
(
bad_range
(
zone
,
page
))
BUG
();
list_del
(
curr
);
index
=
page
-
zone
->
zone_mem_map
;
...
...
@@ -216,7 +220,7 @@ static struct page * rmqueue(zone_t *zone, unsigned int order)
spin_unlock_irqrestore
(
&
zone
->
lock
,
flags
);
set_page_count
(
page
,
1
);
if
(
BAD_RANGE
(
zone
,
page
))
if
(
bad_range
(
zone
,
page
))
BUG
();
if
(
PageLRU
(
page
))
BUG
();
...
...
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