linux-kernel - Re: [patch 00/13] Syslets, "Threadlets", generic AIO support, v3

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Message-ID: <20070225172337.GB4998@elte.hu>
Date:	Sun, 25 Feb 2007 18:23:38 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Evgeniy Polyakov <johnpol@....mipt.ru>
Cc:	linux-kernel@...r.kernel.org,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Arjan van de Ven <arjan@...radead.org>,
	Christoph Hellwig <hch@...radead.org>,
	Andrew Morton <akpm@....com.au>,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	Ulrich Drepper <drepper@...hat.com>,
	Zach Brown <zach.brown@...cle.com>,
	"David S. Miller" <davem@...emloft.net>,
	Suparna Bhattacharya <suparna@...ibm.com>,
	Davide Libenzi <davidel@...ilserver.org>,
	Jens Axboe <jens.axboe@...cle.com>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [patch 00/13] Syslets, "Threadlets", generic AIO support, v3

* Evgeniy Polyakov <johnpol@....mipt.ru> wrote:

> On Wed, Feb 21, 2007 at 10:13:55PM +0100, Ingo Molnar (mingo@...e.hu) wrote:
> > this is the v3 release of the syslet/threadlet subsystem:
> > 
> >    http://redhat.com/~mingo/syslet-patches/
> 
> There is no %xgs.
> 
> --- ./arch/i386/kernel/process.c~	2007-02-24 22:56:14.000000000 +0300
> +++ ./arch/i386/kernel/process.c	2007-02-24 22:53:19.000000000 +0300
> @@ -426,7 +426,6 @@
>  
>  	regs.xds = __USER_DS;
>  	regs.xes = __USER_DS;
> -	regs.xgs = __KERNEL_PDA;

hm, what tree are you using as a base? The syslet patches are against 
v2.6.20 at the moment. (the x86 PDA changes will probably interfere with 
it on v2.6.21-rc1-ish kernels) Note that otherwise the syslet/threadlet 
patches are for x86 only at the moment (as i mentioned in the 
announcement), and the generic code itself contains some occasional 
x86-ishms as well. (None of the concepts are x86-specific though - 
multi-stack architectures should work just as well as RISC-ish CPUs.)

if you create a threadlet based test-webserver, could you please do a 
comparable kevents implementation as well? I.e. same HTTP parser (or 
non-parser, as usually the case is with prototypes ;). Best would be 
something that one could trigger between threadlet and kevent mode, 
using the same binary :-)

	Ingo
-
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