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* [PATCH 00/24] mm: Use memblock interface instead of bootmem
@ 2013-11-08 23:41 Santosh Shilimkar
  2013-11-08 23:41 ` [PATCH 01/24] mm/memblock: debug: correct displaying of upper memory boundary Santosh Shilimkar
                   ` (24 more replies)
  0 siblings, 25 replies; 36+ messages in thread
From: Santosh Shilimkar @ 2013-11-08 23:41 UTC (permalink / raw)
  To: tj, linux-kernel
  Cc: linux-mm, linux-arm-kernel, Santosh Shilimkar, Yinghai Lu,
	H. Peter Anvin, Andrew Morton, Russell King, Arnd Bergmann,
	Nicolas Pitre, Olof Johansson

Tejun and others,

Following up with the earlier RFC [1] comments, here is the updated
patch series based on the discussion. This series is the last bottleneck
now for me to enable the coherency on keystone ARM LPAE architecture on which
the physical memory starts after 4BG. I would like to get these patches
in next merge window(3.14), so any help in terms of testing/comments is
appreciated.

To recap on the original issue, current memblock APIs don't work on
32 PAE or LPAE extension arches where the physical memory start
address beyond 4GB. The problem was discussed here [2] where
Tejun, Yinghai(thanks) proposed a way forward with memblock interfaces.
Based on the proposal, this series adds necessary memblock interfaces
and convert the core kernel code to use them. Architectures already
converted to NO_BOOTMEM use these new interfaces and other which still
uses bootmem, these new interfaces just fallback to exiting bootmem APIs.

So no functional change in behavior. In long run, once all the architectures
moves to NO_BOOTMEM, we can get rid of bootmem layer completely. This is
one step to remove the core code dependency with bootmem and also
gives path for architectures to move away from bootmem.

Testing is done on ARM architecture with 32 bit ARM LAPE machines
with normal as well sparse(faked) memory model. To convert ARM to
NO_BOOTMEM, we have used Russell's work [3] and couple of patches
on top of that. I will be posting those patches as well after 3.13-rc1

Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Tejun Heo <tj@kernel.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Nicolas Pitre <nicolas.pitre@linaro.org>
Cc: Olof Johansson <olof@lixom.net>

Grygorii Strashko (10):
  mm/memblock: debug: correct displaying of upper memory boundary
  mm/memblock: debug: don't free reserved array if
    !ARCH_DISCARD_MEMBLOCK
  mm/bootmem: remove duplicated declaration of __free_pages_bootmem()
  mm/block: remove unnecessary inclusion of bootmem.h
  mm/memory_hotplug: remove unnecessary inclusion of bootmem.h
  mm/staging: remove unnecessary inclusion of bootmem.h
  mm/char: remove unnecessary inclusion of bootmem.h
  mm/memblock: drop WARN and use SMP_CACHE_BYTES as a default alignment
  mm/hugetlb: Use memblock apis for early memory allocations
  mm/page_cgroup: Use memblock apis for early memory allocations

Santosh Shilimkar (14):
  mm/memblock: Add memblock memory allocation apis
  mm/init: Use memblock apis for early memory allocations
  mm/printk: Use memblock apis for early memory allocations
  mm/page_alloc: Use memblock apis for early memory allocations
  mm/power: Use memblock apis for early memory allocations
  mm/lib/swiotlb: Use memblock apis for early memory allocations
  mm/lib/cpumask: Use memblock apis for early memory allocations
  mm/sparse: Use memblock apis for early memory allocations
  mm/percpu: Use memblock apis for early memory allocations
  mm/memory_hotplug: Use memblock apis for early memory allocations
  mm/firmware: Use memblock apis for early memory allocations
  mm/ARM: kernel: Use memblock apis for early memory allocations
  mm/ARM: mm: Use memblock apis for early memory allocations
  mm/ARM: OMAP: Use memblock apis for early memory allocations

 arch/arm/kernel/devtree.c        |    2 +-
 arch/arm/kernel/setup.c          |    2 +-
 arch/arm/mach-omap2/omap_hwmod.c |    8 +-
 arch/arm/mm/init.c               |    2 +-
 block/blk-ioc.c                  |    1 -
 drivers/char/mem.c               |    1 -
 drivers/firmware/memmap.c        |    2 +-
 drivers/staging/speakup/main.c   |    2 -
 include/linux/bootmem.h          |   84 ++++++++++++++-
 init/main.c                      |    4 +-
 kernel/power/snapshot.c          |    2 +-
 kernel/printk/printk.c           |   10 +-
 lib/cpumask.c                    |    4 +-
 lib/swiotlb.c                    |   36 ++++---
 mm/hugetlb.c                     |   10 +-
 mm/memblock.c                    |  215 +++++++++++++++++++++++++++++++++++++-
 mm/memory_hotplug.c              |    3 +-
 mm/page_alloc.c                  |   27 ++---
 mm/page_cgroup.c                 |    5 +-
 mm/percpu.c                      |   41 +++++---
 mm/sparse-vmemmap.c              |    6 +-
 mm/sparse.c                      |   27 ++---
 22 files changed, 397 insertions(+), 97 deletions(-)

Regards,
Santosh

[1] https://lkml.org/lkml/2013/10/12/147
[2] https://lkml.org/lkml/2013/6/29/77
[3] http://lwn.net/Articles/561854/

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^ permalink raw reply	[flat|nested] 36+ messages in thread
end of thread, other threads:[~2013-12-03  0:48 UTC | newest]

Thread overview: 36+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2013-11-08 23:41 [PATCH 00/24] mm: Use memblock interface instead of bootmem Santosh Shilimkar
2013-11-08 23:41 ` [PATCH 01/24] mm/memblock: debug: correct displaying of upper memory boundary Santosh Shilimkar
2013-11-08 23:41 ` [PATCH 02/24] mm/memblock: debug: don't free reserved array if !ARCH_DISCARD_MEMBLOCK Santosh Shilimkar
2013-11-08 23:41 ` [PATCH 03/24] mm/bootmem: remove duplicated declaration of __free_pages_bootmem() Santosh Shilimkar
2013-11-08 23:41 ` [PATCH 04/24] mm/block: remove unnecessary inclusion of bootmem.h Santosh Shilimkar
2013-11-13  2:09   ` Jens Axboe
2013-11-13 23:10     ` Santosh Shilimkar
2013-11-08 23:41 ` [PATCH 05/24] mm/memory_hotplug: " Santosh Shilimkar
2013-11-08 23:41 ` [PATCH 06/24] mm/staging: " Santosh Shilimkar
2013-11-08 23:41 ` [PATCH 07/24] mm/char: " Santosh Shilimkar
2013-11-08 23:41 ` [PATCH 08/24] mm/memblock: drop WARN and use SMP_CACHE_BYTES as a default alignment Santosh Shilimkar
2013-11-08 23:41 ` [PATCH 09/24] mm/memblock: Add memblock memory allocation apis Santosh Shilimkar
2013-12-03  0:31   ` Andrew Morton
2013-12-03  0:48     ` Santosh Shilimkar
2013-11-08 23:41 ` [PATCH 10/24] mm/init: Use memblock apis for early memory allocations Santosh Shilimkar
2013-11-08 23:41 ` [PATCH 11/24] mm/printk: " Santosh Shilimkar
2013-11-08 23:41 ` [PATCH 12/24] mm/page_alloc: " Santosh Shilimkar
2013-11-08 23:41 ` [PATCH 13/24] mm/power: " Santosh Shilimkar
2013-11-09  1:30   ` Rafael J. Wysocki
2013-11-09 19:08     ` Santosh Shilimkar
2013-11-08 23:41 ` [PATCH 14/24] mm/lib/swiotlb: " Santosh Shilimkar
2013-11-09 16:55   ` Konrad Rzeszutek Wilk
2013-11-09 19:07     ` Santosh Shilimkar
2013-11-08 23:41 ` [PATCH 15/24] mm/lib/cpumask: " Santosh Shilimkar
2013-11-08 23:41 ` [PATCH 16/24] mm/sparse: " Santosh Shilimkar
2013-11-08 23:41 ` [PATCH 17/24] mm/hugetlb: " Santosh Shilimkar
2013-11-08 23:41 ` [PATCH 18/24] mm/page_cgroup: " Santosh Shilimkar
2013-11-08 23:41 ` [PATCH 19/24] mm/percpu: " Santosh Shilimkar
2013-11-08 23:41 ` [PATCH 20/24] mm/memory_hotplug: " Santosh Shilimkar
2013-11-08 23:41 ` [PATCH 21/24] mm/firmware: " Santosh Shilimkar
2013-11-08 23:41 ` [PATCH 22/24] mm/ARM: kernel: " Santosh Shilimkar
2013-11-08 23:41 ` [PATCH 23/24] mm/ARM: mm: " Santosh Shilimkar
2013-11-08 23:42 ` [PATCH 24/24] mm/ARM: OMAP: " Santosh Shilimkar
2013-11-29 16:50 ` [PATCH 00/24] mm: Use memblock interface instead of bootmem Santosh Shilimkar
2013-12-03  0:32   ` Andrew Morton
2013-12-03  0:40     ` Santosh Shilimkar

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