From: Andrew Morton <akpm@linux-foundation.org>
To: Alexander Gordeev <lasaine@lvk.cs.msu.su>
Cc: linux-kernel@vger.kernel.org,
"Nikita V\. Youshchenko" <yoush@cs.msu.su>,
linuxpps@ml.enneenne.com,
Rodolfo Giometti <giometti@enneenne.com>
Subject: Re: [PATCHv6 00/16] pps: several fixes and improvements
Date: Fri, 17 Dec 2010 16:19:38 -0800 [thread overview]
Message-ID: <20101217161938.9247e433.akpm@linux-foundation.org> (raw)
In-Reply-To: <cover.1292604060.git.lasaine@lvk.cs.msu.su>
On Fri, 17 Dec 2010 22:54:24 +0300
Alexander Gordeev <lasaine@lvk.cs.msu.su> wrote:
> There is one problem however: kernel consumer works bad (if enabled)
> when CONFIG_NO_HZ is enabled. The reason for this is commit
> a092ff0f90cae22b2ac8028ecd2c6f6c1a9e4601. Without it hardpps() is able
> to sync to 1us precision in about 10 seconds. With CONFIG_NO_HZ it is
> not syncing at all. This only affects patches 12-14, others are ok.
Is someone working on fixing all this?
next prev parent reply other threads:[~2010-12-18 0:20 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
2010-12-18 0:19 ` Andrew Morton [this message]
2010-12-18 1:00 ` [PATCHv6 00/16] pps: several fixes and improvements 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
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20101217161938.9247e433.akpm@linux-foundation.org \
--to=akpm@linux-foundation.org \
--cc=giometti@enneenne.com \
--cc=lasaine@lvk.cs.msu.su \
--cc=linux-kernel@vger.kernel.org \
--cc=linuxpps@ml.enneenne.com \
--cc=yoush@cs.msu.su \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.