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SubjectRe: [PATCH v7 1/4] spinlock: A new lockref structure for lockless update of refcount
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On Wed, Sep 4, 2013 at 12:55 AM, Dave Jones <davej@redhat.com> wrote:
> 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'
>

With CONFIG_KVM=n ...

$ egrep 'CONFIG_NET=|CONFIG_KVM=|CONFIG_TASKSTATS' .config
CONFIG_TASKSTATS=y
CONFIG_NET=y

- Sedat -


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