From: Arnd Bergmann <arnd-r2nGTMty4D4@public.gmane.org>
To: john stultz <johnstul-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
Cc: Richard Cochran
<richardcochran-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-api-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
Alan Cox <alan-qBU/x9rampVanCEyBjwyrvXRex20P6io@public.gmane.org>,
Christoph Lameter <cl-vYTEC60ixJUAvxtiuMwx3w@public.gmane.org>,
Peter Zijlstra <peterz-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>,
Thomas Gleixner <tglx-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org>
Subject: Re: [PATCH RFC 2/8] clock device: convert clock_gettime
Date: Wed, 10 Nov 2010 11:16:07 +0100 [thread overview]
Message-ID: <201011101116.08038.arnd@arndb.de> (raw)
In-Reply-To: <1289338622.9434.46.camel-bi+AKbBUZKY6gyzm1THtWbp2dZbC/Bob@public.gmane.org>
On Tuesday 09 November 2010, john stultz wrote:
> I wonder thought if it would be worth having a syscall to convert from
> fd to clock_id so it could be more flexible in the future. But it may
> not be worth it, as we're probably already limited by the cpuclock
> implementation.
If the file descriptor comes from a character device, we don't even need
a syscall, it could simply be an ioctl on the device.
Arnd
WARNING: multiple messages have this Message-ID (diff)
From: Arnd Bergmann <arnd@arndb.de>
To: john stultz <johnstul@us.ibm.com>
Cc: Richard Cochran <richardcochran@gmail.com>,
linux-kernel@vger.kernel.org, linux-api@vger.kernel.org,
Alan Cox <alan@lxorguk.ukuu.org.uk>,
Christoph Lameter <cl@linux.com>,
Peter Zijlstra <peterz@infradead.org>,
Thomas Gleixner <tglx@linutronix.de>
Subject: Re: [PATCH RFC 2/8] clock device: convert clock_gettime
Date: Wed, 10 Nov 2010 11:16:07 +0100 [thread overview]
Message-ID: <201011101116.08038.arnd@arndb.de> (raw)
In-Reply-To: <1289338622.9434.46.camel@localhost.localdomain>
On Tuesday 09 November 2010, john stultz wrote:
> I wonder thought if it would be worth having a syscall to convert from
> fd to clock_id so it could be more flexible in the future. But it may
> not be worth it, as we're probably already limited by the cpuclock
> implementation.
If the file descriptor comes from a character device, we don't even need
a syscall, it could simply be an ioctl on the device.
Arnd
next prev parent reply other threads:[~2010-11-10 10:16 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-11-04 19:26 [PATCH RFC 0/8] Dynamic clock devices Richard Cochran
2010-11-04 19:26 ` Richard Cochran
[not found] ` <cover.1288897198.git.richard.cochran-3mrvs1K0uXizZXS1Dc/lvw@public.gmane.org>
2010-11-04 19:28 ` [PATCH RFC 1/8] Introduce dynamic " Richard Cochran
2010-11-04 19:28 ` Richard Cochran
2010-11-08 6:38 ` Arnd Bergmann
[not found] ` <201011080738.41871.arnd-r2nGTMty4D4@public.gmane.org>
2010-12-04 14:55 ` Richard Cochran
2010-12-04 14:55 ` Richard Cochran
[not found] ` <20101204145343.GA8390-7KxsofuKt4IfAd9E5cN8NEzG7cXyKsk/@public.gmane.org>
2010-12-06 14:14 ` Arnd Bergmann
2010-12-06 14:14 ` Arnd Bergmann
2010-11-04 19:28 ` [PATCH RFC 2/8] clock device: convert clock_gettime Richard Cochran
2010-11-04 19:28 ` Richard Cochran
[not found] ` <81ccd2674ebf26332898761ba6b7b54f395a15bd.1288897199.git.richard.cochran-3mrvs1K0uXizZXS1Dc/lvw@public.gmane.org>
2010-11-08 6:56 ` Arnd Bergmann
2010-11-08 6:56 ` Arnd Bergmann
[not found] ` <201011080756.50930.arnd-r2nGTMty4D4@public.gmane.org>
2010-11-09 10:26 ` Richard Cochran
2010-11-09 10:26 ` Richard Cochran
[not found] ` <20101109102641.GB2690-7KxsofuKt4IfAd9E5cN8NEzG7cXyKsk/@public.gmane.org>
2010-11-09 12:47 ` Arnd Bergmann
2010-11-09 12:47 ` Arnd Bergmann
2010-11-09 21:37 ` john stultz
2010-11-09 21:37 ` john stultz
[not found] ` <1289338622.9434.46.camel-bi+AKbBUZKY6gyzm1THtWbp2dZbC/Bob@public.gmane.org>
2010-11-10 10:16 ` Arnd Bergmann [this message]
2010-11-10 10:16 ` Arnd Bergmann
2010-11-08 23:37 ` john stultz
2010-11-08 23:37 ` john stultz
[not found] ` <1289259423.21487.7.camel-bi+AKbBUZKY6gyzm1THtWbp2dZbC/Bob@public.gmane.org>
2010-11-09 8:23 ` Richard Cochran
2010-11-09 8:23 ` Richard Cochran
[not found] ` <20101109082353.GA2690-7KxsofuKt4IfAd9E5cN8NEzG7cXyKsk/@public.gmane.org>
2010-11-09 21:10 ` john stultz
2010-11-09 21:10 ` john stultz
[not found] ` <1289337058.9434.39.camel-bi+AKbBUZKY6gyzm1THtWbp2dZbC/Bob@public.gmane.org>
2010-11-15 9:41 ` Richard Cochran
2010-11-15 9:41 ` Richard Cochran
2010-11-04 19:28 ` [PATCH RFC 3/8] clock device: convert clock_getres Richard Cochran
2010-11-04 19:28 ` Richard Cochran
2010-11-04 19:30 ` [PATCH RFC 8/8] clock device: convert timer_settime Richard Cochran
2010-11-04 19:30 ` Richard Cochran
2010-11-15 10:01 ` [PATCH RFC 0/8] Dynamic clock devices Paul Mundt
2010-11-15 10:01 ` Paul Mundt
[not found] ` <20101115100150.GA25973-M7jkjyW5wf5g9hUCZPvPmw@public.gmane.org>
2010-11-18 16:33 ` Richard Cochran
2010-11-18 16:33 ` Richard Cochran
2010-11-04 19:29 ` [PATCH RFC 4/8] clock device: convert clock_settime Richard Cochran
2010-11-04 19:29 ` [PATCH RFC 5/8] clock device: convert timer_create Richard Cochran
2010-11-04 19:30 ` [PATCH RFC 6/8] clock device: convert timer_delete Richard Cochran
2010-11-04 19:30 ` [PATCH RFC 7/8] clock device: convert timer_gettime Richard Cochran
2010-11-08 23:01 ` [PATCH RFC 0/8] Dynamic clock devices john stultz
[not found] ` <1289257264.2798.98.camel-bi+AKbBUZKY6gyzm1THtWbp2dZbC/Bob@public.gmane.org>
2010-11-15 9:34 ` Richard Cochran
2010-11-15 9:34 ` Richard Cochran
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=201011101116.08038.arnd@arndb.de \
--to=arnd-r2ngtmty4d4@public.gmane.org \
--cc=alan-qBU/x9rampVanCEyBjwyrvXRex20P6io@public.gmane.org \
--cc=cl-vYTEC60ixJUAvxtiuMwx3w@public.gmane.org \
--cc=johnstul-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org \
--cc=linux-api-u79uwXL29TY76Z2rM5mHXA@public.gmane.org \
--cc=linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org \
--cc=peterz-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org \
--cc=richardcochran-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org \
--cc=tglx-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org \
/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.