linux-kernel - Re: [RFC PATCH 2/6] Split out tasklets from softirq.c

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Message-Id: <1182520692.5493.51.camel@localhost.localdomain>
Date:	Fri, 22 Jun 2007 09:58:12 -0400
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Akinobu Mita <akinobu.mita@...il.com>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Ingo Molnar <mingo@...e.hu>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Christoph Hellwig <hch@...radead.org>,
	john stultz <johnstul@...ibm.com>,
	Oleg Nesterov <oleg@...sign.ru>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Dipankar Sarma <dipankar@...ibm.com>,
	"David S. Miller" <davem@...emloft.net>, matthew.wilcox@...com,
	kuznet@....inr.ac.ru
Subject: Re: [RFC PATCH 2/6] Split out tasklets from softirq.c

On Fri, 2007-06-22 at 22:45 +0900, Akinobu Mita wrote:
> 2007/6/22, Steven Rostedt <rostedt@...dmis.org>:
> 
> > +static inline void tasklet_unlock_wait(struct tasklet_struct *t)
> > +{
> > +       while (test_bit(TASKLET_STATE_RUN, &(t)->state)) { barrier(); }
> > +}
> 
> BTW, can we use cpu_relax() instead of barrier() in this busy-wait loop?
> 

Probably, but not in this patch series.  That's part of the code I'm
trying to remove ;-)

-- Steve


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