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SubjectRe: [PATCH v7 1/4] spinlock: A new lockref structure for lockless update of refcount
On Wed, Sep 04, 2013 at 12:37:25AM +0200, Sedat Dilek wrote:

> > You're spending more time on the task stats than on the actual lookup.
> > Maybe you should turn off CONFIG_TASKSTATS..But why that whole
> > irq_return thing? Odd.
> >
>
> [ init/Kconfig ]
> ...
> config TASKSTATS
> bool "Export task/process statistics through netlink"
> depends on NET <--- Difficult to disable it?!

More likely you're getting bitten by the fact that CONFIG_KVM has
a 'select TASKSTATS'

Dave



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