On Friday 18 January 2013, Vineet Gupta wrote:
> + /* setup bootmem allocator */
> + bootmap_sz = init_bootmem_node(NODE_DATA(0),
> + first_free_pfn,/* bitmap start */
> + min_low_pfn, /* First pg to track */
> + max_low_pfn); /* Last pg to track */
> +
> + /*
> + * init_bootmem above marks all tracked Page-frames as inuse
> "allocated"
> + * This includes pages occupied by kernel's elf segments.
> + * Beyond that, excluding bootmem bitmap itself, mark the rest of
> + * free-mem as "allocatable"
> + */
> + alloc_start = kernel_img_end + bootmap_sz;
> + free_bootmem(alloc_start, end_mem - alloc_start);
> +
> + memset(zones_size, 0, sizeof(zones_size));
> + zones_size[ZONE_NORMAL] = num_physpages;
> +
IIRC, the bootmem allocator is no longer recommended for new architecture.
You should use the "memblock" interface instead, as arm64 and tile do.
I just saw that this is still listed as TODO for openrisc, sorry if I
put you on the wrong track there by recommending to copy from openrisc.
Arnd
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