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SubjectRe: [PATCH] x86 MCE: shut up lockdep warning
On Fri, May 08, 2009 at 11:47:09AM +0800, Shaohua Li wrote:
> lockdep report below warning when I try to offline one cpu:
> [ 110.835487] =================================
> [ 110.835616] [ INFO: inconsistent lock state ]
> [ 110.835688] 2.6.30-rc4-00336-g8c9ed89 #52
> [ 110.835757] ---------------------------------
> [ 110.835828] inconsistent {HARDIRQ-ON-W} -> {IN-HARDIRQ-W} usage.
> [ 110.835908] swapper/0 [HC1[1]:SC0[0]:HE0:SE1] takes:
> [ 110.835982] (cmci_discover_lock){?.+...}, at: [<ffffffff80236dc0>] cmci_clear+0x30/0x9b
>
> smp_call_function_single() will disable interrupt. moving mce reenable/disable
> to workqueue, so no irq is disabled.

Looks good. Thanks.

Acked-by: Andi Kleen <ak@linux.intel.com>
>
> Signed-off-by: Shaohua Li<shaohua.li@intel.com>

-Andi


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