From: Pavel Machek <pavel@ucw.cz>
To: Francis Moreau <francis.moro@gmail.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: How to avoid data copies in a driver ?
Date: Wed, 21 May 2008 12:41:53 +0200 [thread overview]
Message-ID: <20080521104153.GC4948@ucw.cz> (raw)
In-Reply-To: <38b2ab8a0805141254i2437a0ccq130b914748f53db0@mail.gmail.com>
On Wed 2008-05-14 21:54:03, Francis Moreau wrote:
> Hello,
>
> I'd like to optimize my driver, which receives data through a fifo and gives
> them to a user space application. In turns this application moves this data
> into a file.
>
> To avoid several useless copies, I'd like the application to pass to the driver
> a file descriptor (?) to the driver and then the driver can directly move the
> received data to that file.
>
> Could anybody give me some example of such scheme ?
man splice?
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
prev parent reply other threads:[~2008-05-21 10:42 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-05-14 19:54 How to avoid data copies in a driver ? Francis Moreau
2008-05-14 20:02 ` Lennart Sorensen
2008-05-15 7:44 ` Francis Moreau
2008-05-15 13:59 ` Lennart Sorensen
2008-05-16 20:17 ` Francis Moreau
2008-05-14 21:23 ` linux-os (Dick Johnson)
2008-05-15 7:40 ` Francis Moreau
2008-05-15 11:50 ` Arnd Hannemann
2008-05-15 12:08 ` Francis Moreau
2008-05-15 13:16 ` linux-os (Dick Johnson)
2008-05-16 8:10 ` Jeremy Fitzhardinge
2008-05-16 11:44 ` Francis Moreau
2008-05-21 10:41 ` Pavel Machek [this message]
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