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c601fd6956
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Christoph Lameter c601fd6956 slab: Handle ARCH_DMA_MINALIGN correctly 
James Hogan hit boot problems in next-20130204 on Meta:

  META213-Thread0 DSP [LogF] kobject (4fc03980): tried to init an initialized object, something is seriously wrong.
  META213-Thread0 DSP [LogF]
  META213-Thread0 DSP [LogF] Call trace:
  META213-Thread0 DSP [LogF] [<4000888c>] _show_stack+0x68/0x7c
  META213-Thread0 DSP [LogF] [<400088b4>] _dump_stack+0x14/0x28
  META213-Thread0 DSP [LogF] [<40103794>] _kobject_init+0x58/0x9c
  META213-Thread0 DSP [LogF] [<40103810>] _kobject_create+0x38/0x64
  META213-Thread0 DSP [LogF] [<40103eac>] _kobject_create_and_add+0x14/0x8c
  META213-Thread0 DSP [LogF] [<40190ac4>] _mnt_init+0xd8/0x220
  META213-Thread0 DSP [LogF] [<40190508>] _vfs_caches_init+0xb0/0x160
  META213-Thread0 DSP [LogF] [<401851f4>] _start_kernel+0x274/0x340
  META213-Thread0 DSP [LogF] [<40188424>] _metag_start_kernel+0x58/0x6c
  META213-Thread0 DSP [LogF] [<40000044>] __start+0x44/0x48
  META213-Thread0 DSP [LogF]
  META213-Thread0 DSP [LogF] devtmpfs: initialized
  META213-Thread0 DSP [LogF] L2 Cache: Not present
  META213-Thread0 DSP [LogF] BUG: failure at fs/sysfs/dir.c:736/sysfs_read_ns_type()!
  META213-Thread0 DSP [LogF] Kernel panic - not syncing: BUG!
  META213-Thread0 DSP [Thread Exit] Thread has exited - return code = 4294967295

And bisected the problem to commit 95a05b4 ("slab: Common constants for
kmalloc boundaries").

As it turns out, a fixed KMALLOC_SHIFT_LOW does not work for arches with
higher alignment requirements.

Determine KMALLOC_SHIFT_LOW from ARCH_DMA_MINALIGN instead.

Reported-and-tested-by: James Hogan <james.hogan@imgtec.com>
Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
2013-02-06 20:32:13 +02:00
..
acpi PCI changes for the v3.8 merge window: 2012-12-13 12:14:47 -08:00
asm-generic These are a few cleanups for asm-generic: 2012-12-21 16:39:08 -08:00
clocksource
crypto
drm Merge branch 'drm-intel-fixes' of git://people.freedesktop.org/~danvet/drm-intel into drm-next 2012-12-16 06:05:03 +00:00
keys
linux slab: Handle ARCH_DMA_MINALIGN correctly 2013-02-06 20:32:13 +02:00
math-emu
media
memory
misc
net Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2012-12-19 20:29:15 -08:00
pcmcia
ras
rdma
rxrpc
scsi SCSI misc on 20121212 2012-12-13 19:20:31 -08:00
sound ASoC: More updates for v3.8 2012-12-17 15:40:55 +01:00
target target/iscsi_target: Add NodeACL tags for initiator group support 2012-12-13 14:18:09 -08:00
trace mm: add a __GFP_KMEMCG flag 2012-12-18 15:02:12 -08:00
uapi Miscellaneous device-mapper fixes, cleanups and performance improvements. 2012-12-21 17:08:06 -08:00
video Merge branch 'omap-for-v3.8/fixes-for-merge-window' into omap-for-v3.8/fixes-for-merge-window-v2 2012-12-16 11:28:10 -08:00
xen Bugfixes: 2012-12-18 12:26:54 -08:00
Kbuild