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Re: Making spl7 just cli/sti?
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From: |
Samuel Thibault |
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Subject: |
Re: Making spl7 just cli/sti? |
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Date: |
Mon, 15 Dec 2014 00:52:59 +0100 |
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User-agent: |
Mutt/1.5.21+34 (58baf7c9f32f) (2010-12-30) |
Samuel Thibault, le Sun 14 Dec 2014 17:59:24 +0100, a écrit :
> Richard Braun, le Sun 14 Dec 2014 15:44:44 +0100, a écrit :
> > If the critical sections protected by this lock are all small enough,
> > granularity tends to matter much less. My point being that this could
> > be generalized for all IPLs,
>
> Yes, but investigation is needed to make sure that the protected
> sections are indeed small. It appeared that the sched level was,
> indeed, I haven't checked the others.
Also, the Linux drivers are using cli/sti themselves, cohabitation will
not be trivial :)
Samuel