Re: mprotect() api overhead.

Alan Cox (alan@lxorguk.ukuu.org.uk)
Sat, 23 Mar 2002 02:20:37 +0000 (GMT)

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> As for SMP case, for my application, it is less an issue, since
> when user call my API in the .so, the mprotect (or that HP=20
> 7 instructions) will open access to the share memory for them
> regardless which CPU they are coming from. If other thread

That still requires cross processor synchronization - so it will still
take the same hit

Alan

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