linux-kernel - Re: [PATCH V7 4/8] posix clocks: hook dynamic clocks into system calls

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Message-ID: <20101221080037.GB13626@riccoc20.at.omicron.at>
Date:	Tue, 21 Dec 2010 09:00:37 +0100
From:	Richard Cochran <richardcochran@...il.com>
To:	Thomas Gleixner <tglx@...utronix.de>
Cc:	linux-kernel@...r.kernel.org, linux-api@...r.kernel.org,
	netdev@...r.kernel.org, Alan Cox <alan@...rguk.ukuu.org.uk>,
	Arnd Bergmann <arnd@...db.de>,
	Christoph Lameter <cl@...ux.com>,
	David Miller <davem@...emloft.net>,
	John Stultz <johnstul@...ibm.com>,
	Krzysztof Halasa <khc@...waw.pl>,
	Peter Zijlstra <peterz@...radead.org>,
	Rodolfo Giometti <giometti@...ux.it>
Subject: Re: [PATCH V7 4/8] posix clocks: hook dynamic clocks into system
 calls

On Fri, Dec 17, 2010 at 11:03:46AM +0100, Thomas Gleixner wrote:
> 
> Doesn't the same problem exist for the file operations of patch 3? I
> think you want the very same protection there unless you want to do
> the same magic in your USB driver as well.

Yes, you are right. I overlooked that.

> So you could do the following:
  ...

> So your fops would call get_fd_clk() and put_fd_clk() and the pc_timer
> ones get_posix_clock() and put_posix_clock() or whatever sensible
> function names you come up with.
> 
> Thoughts ?

It is a good, concrete suggestion. I will try it that way.

Thanks,

Richard
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