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authorRussell King <rmk@dyn-67.arm.linux.org.uk>2005-06-22 22:47:25 +0200
committerRussell King <rmk@dyn-67.arm.linux.org.uk>2005-06-22 22:47:25 +0200
commit92a8cbed29eb9bf6e8eec16ca29d54015bc0e8a2 (patch)
tree142314e2863863a1cbe1ea950ac688fc1aaeef6c /arch/arm/mm/init.c
parent[PATCH] ARM: Ensure memory information is page aligned (diff)
downloadlinux-92a8cbed29eb9bf6e8eec16ca29d54015bc0e8a2.tar.xz
linux-92a8cbed29eb9bf6e8eec16ca29d54015bc0e8a2.zip
[PATCH] ARM: Remove explicit page-alignments in memory init
Since meminfo.bank[] array contains page-aligned start/size, we no longer need to explicitly round up/down the addresses when converting to PFNs. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mm/init.c')
-rw-r--r--arch/arm/mm/init.c19
1 files changed, 6 insertions, 13 deletions
diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c
index 72a2b8cee319..c08710b1ff02 100644
--- a/arch/arm/mm/init.c
+++ b/arch/arm/mm/init.c
@@ -93,14 +93,7 @@ struct node_info {
};
#define O_PFN_DOWN(x) ((x) >> PAGE_SHIFT)
-#define V_PFN_DOWN(x) O_PFN_DOWN(__pa(x))
-
#define O_PFN_UP(x) (PAGE_ALIGN(x) >> PAGE_SHIFT)
-#define V_PFN_UP(x) O_PFN_UP(__pa(x))
-
-#define PFN_SIZE(x) ((x) >> PAGE_SHIFT)
-#define PFN_RANGE(s,e) PFN_SIZE(PAGE_ALIGN((unsigned long)(e)) - \
- (((unsigned long)(s)) & PAGE_MASK))
/*
* FIXME: We really want to avoid allocating the bootmap bitmap
@@ -113,7 +106,7 @@ find_bootmap_pfn(int node, struct meminfo *mi, unsigned int bootmap_pages)
{
unsigned int start_pfn, bank, bootmap_pfn;
- start_pfn = V_PFN_UP(&_end);
+ start_pfn = O_PFN_UP(__pa(&_end));
bootmap_pfn = 0;
for (bank = 0; bank < mi->nr_banks; bank ++) {
@@ -122,9 +115,9 @@ find_bootmap_pfn(int node, struct meminfo *mi, unsigned int bootmap_pages)
if (mi->bank[bank].node != node)
continue;
- start = O_PFN_UP(mi->bank[bank].start);
- end = O_PFN_DOWN(mi->bank[bank].size +
- mi->bank[bank].start);
+ start = mi->bank[bank].start >> PAGE_SHIFT;
+ end = (mi->bank[bank].size +
+ mi->bank[bank].start) >> PAGE_SHIFT;
if (end < start_pfn)
continue;
@@ -191,8 +184,8 @@ find_memend_and_nodes(struct meminfo *mi, struct node_info *np)
/*
* Get the start and end pfns for this bank
*/
- start = O_PFN_UP(mi->bank[i].start);
- end = O_PFN_DOWN(mi->bank[i].start + mi->bank[i].size);
+ start = mi->bank[i].start >> PAGE_SHIFT;
+ end = (mi->bank[i].start + mi->bank[i].size) >> PAGE_SHIFT;
if (np[node].start > start)
np[node].start = start;