linux-kernel - Re: [PATCHv4 0/6] sys

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Message-ID: <4743229F.2060805@oracle.com>
Date:	Tue, 20 Nov 2007 10:08:31 -0800
From:	Zach Brown <zach.brown@...cle.com>
To:	Ulrich Drepper <drepper@...hat.com>
CC:	Eric Dumazet <dada1@...mosbay.com>, linux-kernel@...r.kernel.org,
	akpm@...ux-foundation.org, mingo@...e.hu, tglx@...utronix.de,
	torvalds@...ux-foundation.org
Subject: Re: [PATCHv4 0/6] sys_indirect system call


> This was mentioned in one of my mails.  I added the parameter to
> accommodate Linus's and Zack's idea to use the functionality for syslets
> as well.  Not really a multiplexer, it is meant to be a "execute
> synchronously or asynchronously" flag.  In the latter case an additional
> parameter might be needed to indicate the notification mechanism.

I'm sure the additional parameter will be needed, and it might be pretty
involved.  I think the current notion of syslets needs, at the very least:

 - a userspace stack and IP to return to after going async
 - the completion context when completed async
 - a pointer to a return code when completed without blocking

We'll see.  I'm working on it.

- z
-
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