linux-kernel - Re: [PATCHv6 16/16] pps: add parallel port PPS signal generator

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Message-Id: <20101217161837.5f083e73.akpm@linux-foundation.org>
Date:	Fri, 17 Dec 2010 16:18:37 -0800
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Alexander Gordeev <lasaine@....cs.msu.su>
Cc:	linux-kernel@...r.kernel.org,
	"Nikita V\. Youshchenko" <yoush@...msu.su>,
	linuxpps@...enneenne.com, Rodolfo Giometti <giometti@...eenne.com>,
	Randy Dunlap <rdunlap@...otime.net>, linux-doc@...r.kernel.org
Subject: Re: [PATCHv6 16/16] pps: add parallel port PPS signal generator

On Fri, 17 Dec 2010 22:54:40 +0300
Alexander Gordeev <lasaine@....cs.msu.su> wrote:

> +static enum hrtimer_restart hrtimer_event(struct hrtimer *timer)
> +{
> +	struct timespec expire_time, ts1, ts2, ts3, dts;
> +	struct pps_generator_pp *dev;
> +	struct parport *port;
> +	long lim, delta;
> +	unsigned long flags;
> +
> +	/* NB: approx time with blocked interrupts =
> +	   send_delay + 3 * SAFETY_INTERVAL */
> +	local_irq_save(flags);

ditto.
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