Date: Sun, 24 Jun 2007 11:52:16 -0400 (EDT)
From: Steven Rostedt <rostedt@goodmis.org>
To: Jonathan Corbet <corbet@lwn.net>
cc: Ingo Molnar <mingo@elte.hu>, LKML <linux-kernel@vger.kernel.org>,
       Andrew Morton <akpm@linux-foundation.org>,
       Thomas Gleixner <tglx@linutronix.de>,
       Christoph Hellwig <hch@infradead.org>,
       john stultz <johnstul@us.ibm.com>, Oleg Nesterov <oleg@tv-sign.ru>,
       "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>,
       Dipankar Sarma <dipankar@in.ibm.com>,
       "David S. Miller" <davem@davemloft.net>, matthew.wilcox@hp.com,
       kuznet@ms2.inr.ac.ru, Linus Torvalds <torvalds@linux-foundation.org>
Subject: Re: [RFC PATCH 0/6] Convert all tasklets to workqueues 
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On Sun, 24 Jun 2007, Jonathan Corbet wrote:
>
> The cafe_ccic (OLPC) camera driver uses a tasklet to move frames out of
> the DMA buffers in the streaming I/O path.  With this change in place,
> I'd worry that the possibility of dropping frames would increase,
> especially considering that (1) this is running on OLPC hardware, and
> (2) there is typically a streaming video application running in user
> space.
>
> Obviously some testing is called for here.  I will make an attempt to do
> that testing, but the next few weeks involve some insane travel which
> will make that hard.  Stay tuned.
>

Jon,

Thanks for pointing this driver out. I'd greatly appreciate any report
you give us regarding the effect of having the tasklet as a thread.

-- Steve

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