linux-toradex.git/mm/nobootmem.c, branch v3.15-rc5

mm/nobootmem.c: mark function as static

2014-04-03T23:21:02+00:00

Mark function as static in nobootmem.c because it is not used outside
this file.

This eliminates the following warning in mm/nobootmem.c:

  mm/nobootmem.c:324:15: warning: no previous prototype for `___alloc_bootmem_node' [-Wmissing-prototypes]

Signed-off-by: Rashika Kheria 
Reviewed-by: Josh Triplett 
Acked-by: David Rientjes 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

mm/nobootmem: free_all_bootmem again

2014-01-24T00:36:52+00:00

get_allocated_memblock_reserved_regions_info() should work if it is
compiled in.  Extended the ifdef around
get_allocated_memblock_memory_regions_info() to include
get_allocated_memblock_reserved_regions_info() as well.  Similar changes
in nobootmem.c/free_low_memory_core_early() where the two functions are
called.

[akpm@linux-foundation.org: cleanup]
Signed-off-by: Philipp Hachtmann 
Cc: qiuxishi 
Cc: David Howells 
Cc: Daeseok Youn 
Cc: Jiang Liu 
Acked-by: Yinghai Lu 
Cc: Zhang Yanfei 
Cc: Santosh Shilimkar 
Cc: Grygorii Strashko 
Cc: Tang Chen 
Cc: Martin Schwidefsky 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

mm: free memblock.memory in free_all_bootmem

2014-01-24T00:36:51+00:00

When calling free_all_bootmem() the free areas under memblock's control
are released to the buddy allocator.  Additionally the reserved list is
freed if it was reallocated by memblock.  The same should apply for the
memory list.

Signed-off-by: Philipp Hachtmann 
Reviewed-by: Tejun Heo 
Cc: Joonsoo Kim 
Cc: Johannes Weiner 
Cc: Tang Chen 
Cc: Toshi Kani 
Cc: Jianguo Wu 
Cc: Yinghai Lu 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

mm/nobootmem.c: add return value check in __alloc_memory_core_early()

2014-01-24T00:36:51+00:00

When memblock_reserve() fails because memblock.reserved.regions cannot
be resized, the caller (e.g.  alloc_bootmem()) is not informed of the
failed allocation.  Therefore alloc_bootmem() silently returns the same
pointer again and again.

This patch adds a check for the return value of memblock_reserve() in
__alloc_memory_core().

Signed-off-by: Philipp Hachtmann 
Reviewed-by: Tejun Heo 
Cc: Joonsoo Kim 
Cc: Johannes Weiner 
Cc: Tang Chen 
Cc: Toshi Kani 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

mm/memblock: switch to use NUMA_NO_NODE instead of MAX_NUMNODES

2014-01-22T00:19:46+00:00

It's recommended to use NUMA_NO_NODE everywhere to select "process any
node" behavior or to indicate that "no node id specified".

Hence, update __next_free_mem_range*() API's to accept both NUMA_NO_NODE
and MAX_NUMNODES, but emit warning once on MAX_NUMNODES, and correct
corresponding API's documentation to describe new behavior.  Also,
update other memblock/nobootmem APIs where MAX_NUMNODES is used
dirrectly.

The change was suggested by Tejun Heo.

Signed-off-by: Grygorii Strashko 
Signed-off-by: Santosh Shilimkar 
Cc: Yinghai Lu 
Cc: Tejun Heo 
Cc: "Rafael J. Wysocki" 
Cc: Arnd Bergmann 
Cc: Christoph Lameter 
Cc: Greg Kroah-Hartman 
Cc: H. Peter Anvin 
Cc: Johannes Weiner 
Cc: KAMEZAWA Hiroyuki 
Cc: Konrad Rzeszutek Wilk 
Cc: Michal Hocko 
Cc: Paul Walmsley 
Cc: Pavel Machek 
Cc: Russell King 
Cc: Tony Lindgren 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

mm/memblock: reorder parameters of memblock_find_in_range_node

2014-01-22T00:19:46+00:00

Reorder parameters of memblock_find_in_range_node to be consistent with
other memblock APIs.

The change was suggested by Tejun Heo .

Signed-off-by: Grygorii Strashko 
Signed-off-by: Santosh Shilimkar 
Cc: Yinghai Lu 
Cc: Tejun Heo 
Cc: "Rafael J. Wysocki" 
Cc: Arnd Bergmann 
Cc: Christoph Lameter 
Cc: Greg Kroah-Hartman 
Cc: H. Peter Anvin 
Cc: Johannes Weiner 
Cc: KAMEZAWA Hiroyuki 
Cc: Konrad Rzeszutek Wilk 
Cc: Michal Hocko 
Cc: Paul Walmsley 
Cc: Pavel Machek 
Cc: Russell King 
Cc: Tony Lindgren 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

mm/nobootmem.c: have __free_pages_memory() free in larger chunks.

2013-11-13T03:09:04+00:00

On large memory machines it can take a few minutes to get through
free_all_bootmem().

Currently, when free_all_bootmem() calls __free_pages_memory(), the number
of contiguous pages that __free_pages_memory() passes to the buddy
allocator is limited to BITS_PER_LONG.  BITS_PER_LONG was originally
chosen to keep things similar to mm/nobootmem.c.  But it is more efficient
to limit it to MAX_ORDER.

       base   new  change
8TB    202s  172s   30s
16TB   401s  351s   50s

That is around 1%-3% improvement on total boot time.

This patch was spun off from the boot time rfc Robin and I had been
working on.

Signed-off-by: Robin Holt 
Signed-off-by: Nathan Zimmer 
Cc: Robin Holt 
Cc: "H. Peter Anvin" 
Cc: Ingo Molnar 
Cc: Mike Travis 
Cc: Yinghai Lu 
Cc: Mel Gorman 
Acked-by: Johannes Weiner 
Reviewed-by: Wanpeng Li 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

mm: concentrate modification of totalram_pages into the mm core

2013-07-03T23:07:33+00:00

Concentrate code to modify totalram_pages into the mm core, so the arch
memory initialized code doesn't need to take care of it.  With these
changes applied, only following functions from mm core modify global
variable totalram_pages: free_bootmem_late(), free_all_bootmem(),
free_all_bootmem_node(), adjust_managed_page_count().

With this patch applied, it will be much more easier for us to keep
totalram_pages and zone->managed_pages in consistence.

Signed-off-by: Jiang Liu 
Acked-by: David Howells 
Cc: "H. Peter Anvin" 
Cc: "Michael S. Tsirkin" 
Cc: 
Cc: Arnd Bergmann 
Cc: Catalin Marinas 
Cc: Chris Metcalf 
Cc: Geert Uytterhoeven 
Cc: Ingo Molnar 
Cc: Jeremy Fitzhardinge 
Cc: Jianguo Wu 
Cc: Joonsoo Kim 
Cc: Kamezawa Hiroyuki 
Cc: Konrad Rzeszutek Wilk 
Cc: Marek Szyprowski 
Cc: Mel Gorman 
Cc: Michel Lespinasse 
Cc: Minchan Kim 
Cc: Rik van Riel 
Cc: Rusty Russell 
Cc: Tang Chen 
Cc: Tejun Heo 
Cc: Thomas Gleixner 
Cc: Wen Congyang 
Cc: Will Deacon 
Cc: Yasuaki Ishimatsu 
Cc: Yinghai Lu 
Cc: Russell King 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

mm: accurately calculate zone->managed_pages for highmem zones

2013-07-03T23:07:33+00:00

Commit "mm: introduce new field 'managed_pages' to struct zone" assumes
that all highmem pages will be freed into the buddy system by function
mem_init().  But that's not always true, some architectures may reserve
some highmem pages during boot.  For example PPC may allocate highmem
pages for giagant HugeTLB pages, and several architectures have code to
check PageReserved flag to exclude highmem pages allocated during boot
when freeing highmem pages into the buddy system.

So treat highmem pages in the same way as normal pages, that is to:
1) reset zone->managed_pages to zero in mem_init().
2) recalculate managed_pages when freeing pages into the buddy system.

Signed-off-by: Jiang Liu 
Cc: "H. Peter Anvin" 
Cc: Tejun Heo 
Cc: Joonsoo Kim 
Cc: Yinghai Lu 
Cc: Mel Gorman 
Cc: Minchan Kim 
Cc: Kamezawa Hiroyuki 
Cc: Marek Szyprowski 
Cc: "Michael S. Tsirkin" 
Cc: 
Cc: Arnd Bergmann 
Cc: Catalin Marinas 
Cc: Chris Metcalf 
Cc: David Howells 
Cc: Geert Uytterhoeven 
Cc: Ingo Molnar 
Cc: Jeremy Fitzhardinge 
Cc: Jianguo Wu 
Cc: Konrad Rzeszutek Wilk 
Cc: Michel Lespinasse 
Cc: Rik van Riel 
Cc: Rusty Russell 
Cc: Tang Chen 
Cc: Thomas Gleixner 
Cc: Wen Congyang 
Cc: Will Deacon 
Cc: Yasuaki Ishimatsu 
Cc: Russell King 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

mm, nobootmem: do memset() after memblock_reserve()

2013-04-29T22:54:39+00:00

Currently, we do memset() before reserving the area.  This may not cause
any problem, but it is somewhat weird.  So change execution order.

Signed-off-by: Joonsoo Kim 
Cc: Yinghai Lu 
Acked-by: Johannes Weiner 
Cc: Jiang Liu 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds