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Subject: RE: [patch] Real-Time Preemption, -RT-2.6.12-rc4-V0.7.47-06

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From: "Perez-Gonzalez, Inaky" <inaky.perez-gonzalez@intel.com>
To: "Oleg Nesterov" <oleg@tv-sign.ru>, "Ingo Molnar" <mingo@elte.hu>
Cc: <linux-kernel@vger.kernel.org>,
"Daniel Walker" <dwalker@mvista.com>
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>From: tmp@several.ru [mailto:tmp@several.ru] On Behalf Of Oleg Nesterov
>Ingo Molnar wrote:
>>
>> Changes:
>>
>> - more plist fixes (Daniel Walker)

>Why should we consider ->prio =3D=3D INT_MAX as a special case?

This is a fusyn-specific optimization. INT_MAX is set to be the lowest
prio and the one used by non-PI waiters, so it will never interfere with
normal priorities. Because this is probably going to be most of the=20
cases and we know it will always be the last one, it is a shortcut for
it.

It makes some sense, but in a more generic scenario, I might not.

-- Inaky=20

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