A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-29 03:01:39 -04:00
Code Issues Projects Releases Packages Wiki Activity

mem-hotplug: let memblock skip the hotpluggable memory regions in __next_mem_range()

Browse source 
Let memblock skip the hotpluggable memory regions in __next_mem_range(),
it is used to to prevent memblock from allocating hotpluggable memory
for the kernel at early time. The code is the same as __next_mem_range_rev().

Clear hotpluggable flag before releasing free pages to the buddy
allocator.  If we don't clear hotpluggable flag in
free_low_memory_core_early(), the memory which marked hotpluggable flag
will not free to buddy allocator.  Because __next_mem_range() will skip
them.

free_low_memory_core_early
	for_each_free_mem_range
		for_each_mem_range
			__next_mem_range

[[email protected]: fix warning]
Signed-off-by: Xishi Qiu <[email protected]>
Cc: Tejun Heo <[email protected]>
Cc: Tang Chen <[email protected]>
Cc: Zhang Yanfei <[email protected]>
Cc: Wen Congyang <[email protected]>
Cc: "Rafael J. Wysocki" <[email protected]>
Cc: "H. Peter Anvin" <[email protected]>
Cc: Wu Fengguang <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Xishi Qiu 2014-09-09 14:50:46 -07:00 • committed by Linus Torvalds
commit 0a313a998a
2 changed files with 6 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

4
mm/memblock.c
View file

@ -816,6 +816,10 @@ void __init_memblock __next_mem_range(u64 *idx, int nid,
if (nid != NUMA_NO_NODE && nid != m_nid)
continue;
/* skip hotpluggable memory regions if needed */
if (movable_node_is_enabled() && memblock_is_hotpluggable(m))
continue;
if (!type_b) {
if (out_start)
*out_start = m_start;

2
mm/nobootmem.c
View file

@ -119,6 +119,8 @@ static unsigned long __init free_low_memory_core_early(void)
phys_addr_t start, end;
u64 i;
memblock_clear_hotplug(0, -1);
for_each_free_mem_range(i, NUMA_NO_NODE, &start, &end, NULL)
count += __free_memory_core(start, end);