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Subject[PATCH] x86_64: allcate e820 resource struct all together
Date
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don't need to allocate that one by one

Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>

Index: linux-2.6/arch/x86/kernel/e820_64.c
===================================================================
--- linux-2.6.orig/arch/x86/kernel/e820_64.c
+++ linux-2.6/arch/x86/kernel/e820_64.c
@@ -237,9 +237,9 @@ unsigned long __init e820_end_of_ram(voi
void __init e820_reserve_resources(void)
{
int i;
+ struct resource *res;
+ res = alloc_bootmem_low(sizeof(struct resource) * e820.nr_map);
for (i = 0; i < e820.nr_map; i++) {
- struct resource *res;
- res = alloc_bootmem_low(sizeof(struct resource));
switch (e820.map[i].type) {
case E820_RAM: res->name = "System RAM"; break;
case E820_ACPI: res->name = "ACPI Tables"; break;
@@ -250,6 +250,7 @@ void __init e820_reserve_resources(void)
res->end = res->start + e820.map[i].size - 1;
res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
insert_resource(&iomem_resource, res);
+ res++;
}
}


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