Date: Mon, 9 May 2005 11:11:33 +0200
From: Ingo Molnar <mingo@elte.hu>
To: Oleg Nesterov <oleg@tv-sign.ru>
Cc: "Perez-Gonzalez, Inaky" <inaky.perez-gonzalez@intel.com>,
       linux-kernel@vger.kernel.org, Daniel Walker <dwalker@mvista.com>
Subject: Re: [PATCH] Priority Lists for the RT mutex
Message-ID: <20050509091133.GA25959@elte.hu>
References: <F989B1573A3A644BAB3920FBECA4D25A0331776B@orsmsx407> <427C6D7D.878935F1@tv-sign.ru> <20050509073043.GA12976@elte.hu> <427F1A99.58BCCB88@tv-sign.ru>
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* Oleg Nesterov <oleg@tv-sign.ru> wrote:

> > i've uploaded my latest tree to:
> > 
> >     http://redhat.com/~mingo/realtime-preempt/
> > 
> 
> Ok, I'll try to do it. Do you have any comments/objections to
> "[RFC][PATCH] alternative implementation of Priority Lists", see
> http://marc.theaimsgroup.com/?l=linux-kernel&m=111547290706136
> ?

i havent reviewed them closely, but on the face of it the changes seem 
plausible.

What would be nice to achieve are [low-cost] reductions of the size of 
struct rt_mutex (in include/linux/rt_lock.h), upon which all other 
PI-aware locking objects are based. Right now it's 9 words, of which 
struct plist is 5 words. Would be nice to trim this to 8 words - which 
would give a nice round size of 32 bytes on 32-bit.

	Ingo
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