Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-12-27 05:11:48 +00:00
Code Issues Packages Projects Releases Wiki Activity

mm/page_alloc.c: rework code layout in memmap_init_zone()

Browse Source 
This function is getting full of weird tricks to avoid word-wrapping.
Use a goto to eliminate a tab stop then use the new space

Cc: Taku Izumi <izumi.taku@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Andrew Morton 2016-03-15 14:55:25 -07:00 committed by Linus Torvalds
parent 342332e6a9
commit b72d0ffb5d
1 changed files with 38 additions and 41 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

79
mm/page_alloc.c
View File

@ -4508,54 +4508,51 @@ void __meminit memmap_init_zone(unsigned long size, int nid, unsigned long zone,
for (pfn = start_pfn; pfn < end_pfn; pfn++) {
/*
* There can be holes in boot-time mem_map[]s
* handed to this function. They do not
* exist on hotplugged memory.
* There can be holes in boot-time mem_map[]s handed to this
* function. They do not exist on hotplugged memory.
*/
if (context == MEMMAP_EARLY) {
if (!early_pfn_valid(pfn))
continue;
if (!early_pfn_in_nid(pfn, nid))
continue;
if (!update_defer_init(pgdat, pfn, end_pfn,
&nr_initialised))
break;
if (context != MEMMAP_EARLY)
goto not_early;
if (!early_pfn_valid(pfn))
continue;
if (!early_pfn_in_nid(pfn, nid))
continue;
if (!update_defer_init(pgdat, pfn, end_pfn, &nr_initialised))
break;
#ifdef CONFIG_HAVE_MEMBLOCK_NODE_MAP
/*
* if not mirrored_kernelcore and ZONE_MOVABLE exists,
* range from zone_movable_pfn[nid] to end of each node
* should be ZONE_MOVABLE not ZONE_NORMAL. skip it.
*/
if (!mirrored_kernelcore && zone_movable_pfn[nid])
if (zone == ZONE_NORMAL &&
pfn >= zone_movable_pfn[nid])
continue;
/*
* If not mirrored_kernelcore and ZONE_MOVABLE exists, range
* from zone_movable_pfn[nid] to end of each node should be
* ZONE_MOVABLE not ZONE_NORMAL. skip it.
*/
if (!mirrored_kernelcore && zone_movable_pfn[nid])
if (zone == ZONE_NORMAL && pfn >= zone_movable_pfn[nid])
continue;
/*
* check given memblock attribute by firmware which
* can affect kernel memory layout.
* if zone==ZONE_MOVABLE but memory is mirrored,
* it's an overlapped memmap init. skip it.
*/
if (mirrored_kernelcore && zone == ZONE_MOVABLE) {
if (!r ||
pfn >= memblock_region_memory_end_pfn(r)) {
for_each_memblock(memory, tmp)
if (pfn < memblock_region_memory_end_pfn(tmp))
break;
r = tmp;
}
if (pfn >= memblock_region_memory_base_pfn(r) &&
memblock_is_mirror(r)) {
/* already initialized as NORMAL */
pfn = memblock_region_memory_end_pfn(r);
continue;
}
/*
* Check given memblock attribute by firmware which can affect
* kernel memory layout. If zone==ZONE_MOVABLE but memory is
* mirrored, it's an overlapped memmap init. skip it.
*/
if (mirrored_kernelcore && zone == ZONE_MOVABLE) {
if (!r || pfn >= memblock_region_memory_end_pfn(r)) {
for_each_memblock(memory, tmp)
if (pfn < memblock_region_memory_end_pfn(tmp))
break;
r = tmp;
}
if (pfn >= memblock_region_memory_base_pfn(r) &&
memblock_is_mirror(r)) {
/* already initialized as NORMAL */
pfn = memblock_region_memory_end_pfn(r);
continue;
}
#endif
}
#endif
not_early:
/*
* Mark the block movable so that blocks are reserved for
* movable at startup. This will force kernel allocations