[ARM] Allow gcc to optimise arm_add_memory a little more
Russell King [Thu, 30 Nov 2006 20:44:49 +0000 (20:44 +0000)]
For some reason, gcc was calculating meminfo.bank[meminfo.nr_banks]
repeatedly.  Use a pointer to it instead.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

arch/arm/kernel/setup.c

index 29efc9f..75f1764 100644 (file)
@@ -441,16 +441,19 @@ __early_param("initrd=", early_initrd);
 
 static void __init arm_add_memory(unsigned long start, unsigned long size)
 {
+       struct membank *bank;
+
        /*
         * Ensure that start/size are aligned to a page boundary.
         * Size is appropriately rounded down, start is rounded up.
         */
        size -= start & ~PAGE_MASK;
 
-       meminfo.bank[meminfo.nr_banks].start = PAGE_ALIGN(start);
-       meminfo.bank[meminfo.nr_banks].size  = size & PAGE_MASK;
-       meminfo.bank[meminfo.nr_banks].node  = PHYS_TO_NID(start);
-       meminfo.nr_banks += 1;
+       bank = &meminfo.bank[meminfo.nr_banks++];
+
+       bank->start = PAGE_ALIGN(start);
+       bank->size  = size & PAGE_MASK;
+       bank->node  = PHYS_TO_NID(start);
 }
 
 /*