From: Alexander Gordeev <lasaine@lvk.cs.msu.su>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: linux-kernel@vger.kernel.org,
"Nikita V\. Youshchenko" <yoush@cs.msu.su>,
linuxpps@ml.enneenne.com,
Rodolfo Giometti <giometti@enneenne.com>,
Randy Dunlap <rdunlap@xenotime.net>,
linux-doc@vger.kernel.org
Subject: Re: [PATCHv6 16/16] pps: add parallel port PPS signal generator
Date: Sat, 18 Dec 2010 03:52:39 +0300 [thread overview]
Message-ID: <20101218035239.11d59828@apollo.gnet> (raw)
In-Reply-To: <20101217161837.5f083e73.akpm@linux-foundation.org>
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В Fri, 17 Dec 2010 16:18:37 -0800
Andrew Morton <akpm@linux-foundation.org> пишет:
> On Fri, 17 Dec 2010 22:54:40 +0300
> Alexander Gordeev <lasaine@lvk.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.
The same thing here: we don't want random lags due to other local
interrupt handlers.
--
Alexander
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next prev parent reply other threads:[~2010-12-18 0:52 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-12-17 19:54 [PATCHv6 00/16] pps: several fixes and improvements Alexander Gordeev
2010-12-17 19:54 ` [PATCHv6 01/16] pps: trivial fixes Alexander Gordeev
2010-12-17 19:54 ` [PATCHv6 02/16] pps: declare variables where they are used in switch Alexander Gordeev
2010-12-17 19:54 ` [PATCHv6 03/16] pps: fix race in PPS_FETCH handler Alexander Gordeev
2010-12-17 19:54 ` [PATCHv6 04/16] pps: unify timestamp gathering Alexander Gordeev
2010-12-17 19:54 ` [PATCHv6 05/16] pps: access pps device by direct pointer Alexander Gordeev
2010-12-17 19:54 ` [PATCHv6 06/16] pps: convert printk/pr_* to dev_* Alexander Gordeev
2010-12-17 19:54 ` [PATCHv6 07/16] pps: move idr stuff to pps.c Alexander Gordeev
2010-12-18 0:13 ` Andrew Morton
2010-12-18 1:07 ` Alexander Gordeev
2010-12-18 1:18 ` Andrew Morton
2010-12-17 19:54 ` [PATCHv6 08/16] pps: do not disable interrupts for idr operations Alexander Gordeev
2010-12-17 19:54 ` [PATCHv6 09/16] pps: use BUG_ON for kernel API safety checks Alexander Gordeev
2010-12-17 19:54 ` [PATCHv6 10/16] pps: simplify conditions a bit Alexander Gordeev
2010-12-17 19:54 ` [PATCHv6 11/16] pps: timestamp is always passed to dcd_change() Alexander Gordeev
2010-12-17 19:54 ` [PATCHv6 12/16] ntp: add hardpps implementation Alexander Gordeev
2010-12-17 19:54 ` [PATCHv6 13/16] pps: capture MONOTONIC_RAW timestamps as well Alexander Gordeev
2010-12-17 19:54 ` [PATCHv6 14/16] pps: add kernel consumer support Alexander Gordeev
2010-12-17 19:54 ` [PATCHv6 15/16] pps: add parallel port PPS client Alexander Gordeev
2010-12-18 0:17 ` Andrew Morton
2010-12-18 0:50 ` Alexander Gordeev
2010-12-18 1:13 ` Andrew Morton
2010-12-17 19:54 ` [PATCHv6 16/16] pps: add parallel port PPS signal generator Alexander Gordeev
2010-12-18 0:18 ` Andrew Morton
2010-12-18 0:52 ` Alexander Gordeev [this message]
2010-12-18 0:19 ` [PATCHv6 00/16] pps: several fixes and improvements Andrew Morton
2010-12-18 1:00 ` Alexander Gordeev
2010-12-18 1:14 ` Andrew Morton
2010-12-20 11:54 ` [PATCHv7 00/16] changed some patches Alexander Gordeev
2010-12-20 11:54 ` [PATCHv7 08/16] pps: make idr lock a mutex and protect idr_pre_get Alexander Gordeev
2010-12-20 11:54 ` [PATCHv7 12/16] ntp: add hardpps implementation Alexander Gordeev
2010-12-20 11:54 ` [PATCHv7 13/16] pps: capture MONOTONIC_RAW timestamps as well Alexander Gordeev
2010-12-20 11:54 ` [PATCHv7 14/16] pps: add kernel consumer support Alexander Gordeev
2010-12-20 11:54 ` [PATCHv7 15/16] pps: add parallel port PPS client Alexander Gordeev
2010-12-20 11:54 ` [PATCHv7 16/16] pps: add parallel port PPS signal generator Alexander Gordeev
2010-12-24 0:35 ` Andrew Morton
2010-12-24 1:37 ` Alexander Gordeev
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