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bootmem: Replace work_with_active_regions() with for_each_mem_pfn_range()

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Callback based iteration is cumbersome and much less useful than
for_each_*() iterator.  This patch implements for_each_mem_pfn_range()
which replaces work_with_active_regions().  All the current users of
work_with_active_regions() are converted.

This simplifies walking over early_node_map and will allow converting
internal logics in page_alloc to use iterator instead of walking
early_node_map directly, which in turn will enable moving node
information to memblock.

powerpc change is only compile tested.

Signed-off-by: Tejun Heo <tj@kernel.org>
Link: http://lkml.kernel.org/r/20110714074610.GD3455@htj.dyndns.org
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
This commit is contained in:
Tejun Heo
2011-07-14 09:46:10 +02:00
committed by H. Peter Anvin
parent fc769a8e70
commit 5dfe8660a3
5 changed files with 76 additions and 83 deletions
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23
arch/x86/mm/memblock.c
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@@ -115,28 +115,13 @@ static void __init memblock_x86_subtract_reserved(struct range *range, int az)
memblock_reserve_reserved_regions();
}
struct count_data {
int nr;
};
static int __init count_work_fn(unsigned long start_pfn,
unsigned long end_pfn, void *datax)
{
struct count_data *data = datax;
data->nr++;
return 0;
}
static int __init count_early_node_map(int nodeid)
{
struct count_data data;
int i, cnt = 0;
data.nr = 0;
work_with_active_regions(nodeid, count_work_fn, &data);
return data.nr;
for_each_mem_pfn_range(i, nodeid, NULL, NULL, NULL)
cnt++;
return cnt;
}
int __init __get_free_all_memory_range(struct range **rangep, int nodeid,