Re: [PATCH v7 1/4] spinlock: A new lockref structure for locklessupdate of refcount

[Dave Jones]

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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