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authorTejun Heo <tj@kernel.org>2011-07-12 11:16:02 +0200
committerH. Peter Anvin <hpa@linux.intel.com>2011-07-14 11:47:49 -0700
commit8a9ca34c11e1695dab7aff3cfa7780fbfe76b2f8 (patch)
tree5bd341215c7e829b89d1fcb481cfff71ef81f0f5 /mm/nobootmem.c
parent64a02daacbc880bac1d6b3aeefbcd226a9341fa7 (diff)
downloadlinux-linaro-stable-8a9ca34c11e1695dab7aff3cfa7780fbfe76b2f8.tar.gz
memblock, x86: Replace __get_free_all_memory_range() with for_each_free_mem_range()
__get_free_all_memory_range() walks memblock, calculates free memory areas and fills in the specified range. It can be easily replaced with for_each_free_mem_range(). Convert free_low_memory_core_early() and add_highpages_with_active_regions() to for_each_free_mem_range(). This leaves __get_free_all_memory_range() without any user. Kill it and related functions. Signed-off-by: Tejun Heo <tj@kernel.org> Link: http://lkml.kernel.org/r/1310462166-31469-10-git-send-email-tj@kernel.org Cc: Yinghai Lu <yinghai@kernel.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Diffstat (limited to 'mm/nobootmem.c')
-rw-r--r--mm/nobootmem.c28
1 files changed, 16 insertions, 12 deletions
diff --git a/mm/nobootmem.c b/mm/nobootmem.c
index 2037a8a04761..7075bc00fa84 100644
--- a/mm/nobootmem.c
+++ b/mm/nobootmem.c
@@ -108,21 +108,25 @@ static void __init __free_pages_memory(unsigned long start, unsigned long end)
unsigned long __init free_low_memory_core_early(int nodeid)
{
- int i;
- u64 start, end;
unsigned long count = 0;
- struct range *range = NULL;
- int nr_range;
-
- nr_range = __get_free_all_memory_range(&range, nodeid, 0, max_low_pfn);
-
- for (i = 0; i < nr_range; i++) {
- start = range[i].start;
- end = range[i].end;
- count += end - start;
- __free_pages_memory(start, end);
+ phys_addr_t start, end;
+ u64 i;
+
+ /* free reserved array temporarily so that it's treated as free area */
+ memblock_free_reserved_regions();
+
+ for_each_free_mem_range(i, MAX_NUMNODES, &start, &end, NULL) {
+ unsigned long start_pfn = PFN_UP(start);
+ unsigned long end_pfn = min_t(unsigned long,
+ PFN_DOWN(end), max_low_pfn);
+ if (start_pfn < end_pfn) {
+ __free_pages_memory(start_pfn, end_pfn);
+ count += end_pfn - start_pfn;
+ }
}
+ /* put region array back? */
+ memblock_reserve_reserved_regions();
return count;
}