On Tue, 09 Feb 2010 11:32:32 -0800
Yinghai Lu <yinghai@xxxxxxxxxx> wrote:
> /*
> + * Find a free area with specified alignment in a specific range.
> + */
> +u64 __init find_e820_area(u64 start, u64 end, u64 size, u64 align)
> +{
> + int i;
> +
> + for (i = 0; i < e820.nr_map; i++) {
> + struct e820entry *ei = &e820.map[i];
> + u64 addr;
> + u64 ei_start, ei_last;
> +
> + if (ei->type != E820_RAM)
> + continue;
> +
> + ei_last = ei->addr + ei->size;
> + ei_start = ei->addr;
> + addr = find_early_area(ei_start, ei_last, start, end,
> + size, align);
> +
> + if (addr == -1ULL)
> + continue;
> +
> + return addr;
Small simplification:
if (addr != -1)
return addr;
> + }
> + return -1ULL;
> +}
> +
> +/*
> + * Find next free range after *start
> + */
> +u64 __init find_e820_area_size(u64 start, u64 *sizep, u64 align)
> +{
> + int i;
> +
> + for (i = 0; i < e820.nr_map; i++) {
> + struct e820entry *ei = &e820.map[i];
> + u64 addr;
> + u64 ei_start, ei_last;
> +
> + if (ei->type != E820_RAM)
> + continue;
> +
> + ei_last = ei->addr + ei->size;
> + ei_start = ei->addr;
> + addr = find_early_area_size(ei_start, ei_last, start,
> + sizep, align);
> +
> + if (addr == -1ULL)
> + continue;
> +
> + return addr;
Ditto.
> + }
> +
> + return -1ULL;
> +}
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