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List:       netbsd-tech-kern
Subject:    Re: Introduce curlwp_bind and curlwp_unbind for psref(9)
From:       Ryota Ozaki <ozaki-r () netbsd ! org>
Date:       2016-06-28 1:08:04
Message-ID: CAKrYomgmdpeBzanRQOVJ3Y97tUwD_kf3uVvitJeq=Gw81fGHPw () mail ! gmail ! com
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On Sat, Jun 25, 2016 at 11:56 AM, matthew green <mrg@eterna.com.au> wrote:
>> > Since we already use preempt_disable() to force an lwp to stick to a cpu,
>> > doesn't that solve the problem?  If need be, we can enforce nonpreemptable
>> > lwp's don't migrate.
>
> why would we want to disable preemption in code that merely wants
> to run on a particular cpu.
>
> i dno't understand why using the side effect of preempt_disable()
> is better than  explicitly stating what is wanted.

Yes. That's why the API is introduced.

  ozaki-r
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