[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>

diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c
index 72a2b8c..c08710b 100644 (file)
--- 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;