linux-kernel - Re: [PATCH] RT: Add priority-queuing and priority-inheritance to workqueue infrastructure

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Message-ID: <20070801202551.GB225@tv-sign.ru>
Date:	Thu, 2 Aug 2007 00:25:51 +0400
From:	Oleg Nesterov <oleg@...sign.ru>
To:	Daniel Walker <dwalker@...sta.com>
Cc:	Peter Zijlstra <peterz@...radead.org>, Ingo Molnar <mingo@...e.hu>,
	Gregory Haskins <ghaskins@...ell.com>,
	linux-rt-users@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] RT: Add priority-queuing and priority-inheritance to workqueue infrastructure

On 08/01, Daniel Walker wrote:
>
> On Wed, 2007-08-01 at 22:26 +0400, Oleg Nesterov wrote:
> 
> > No, the "tail" option has nothing to do with prioritize, we can't remove
> > it. Please look at the code.
> 
> So you insert a work struct that executes last which wakes the flushing
> thread?

No, tail == 1 means a "normal" work, tail == 0 means "just after the
->current_work". Yes, the latter is to wake up the flusher at the "right time".

Oleg.

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