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authorChris Metcalf <cmetcalf@tilera.com>2011-06-02 16:19:41 +0200
committerPekka Enberg <penberg@kernel.org>2011-06-03 18:33:49 +0200
commitd4d84fef6d0366b585b7de13527a0faeca84d9ce (patch)
treec67449976f955cff4a2fe8a74affc2dd67c37b7e /kernel/pm_qos_params.c
parentLinux 3.0-rc1 (diff)
downloadlinux-d4d84fef6d0366b585b7de13527a0faeca84d9ce.tar.xz
linux-d4d84fef6d0366b585b7de13527a0faeca84d9ce.zip
slub: always align cpu_slab to honor cmpxchg_double requirement
On an architecture without CMPXCHG_LOCAL but with DEBUG_VM enabled, the VM_BUG_ON() in __pcpu_double_call_return_bool() will cause an early panic during boot unless we always align cpu_slab properly. In principle we could remove the alignment-testing VM_BUG_ON() for architectures that don't have CMPXCHG_LOCAL, but leaving it in means that new code will tend not to break x86 even if it is introduced on another platform, and it's low cost to require alignment. Acked-by: David Rientjes <rientjes@google.com> Acked-by: Christoph Lameter <cl@linux.com> Signed-off-by: Chris Metcalf <cmetcalf@tilera.com> Signed-off-by: Pekka Enberg <penberg@kernel.org>
Diffstat (limited to 'kernel/pm_qos_params.c')
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