From: Leon Woestenberg <leon.woestenberg@gmail.com>
To: linux-kernel@vger.kernel.org
Subject: splice_read() for device drivers?
Date: Sun, 19 Apr 2009 18:09:44 +0200 [thread overview]
Message-ID: <c384c5ea0904190909i1b5ec8car615fdc76e302b871@mail.gmail.com> (raw)
Hello,
I have a device driver for data acquisition that currently exposes a
character device. The device driver performs DMA transfers directly
into/from user space on read/write().
If I want the driver to support splicing, must I implement
splice_read/write() ops? Can I make them directly DMA into the splice
pipe buffer pages?
I found no current implementation of splice_read/write(), except for
filesystem drivers.
Is there a write-up on this or a reference implementation? Any work in
progress for LDD4 or such?
Regards,
--
Leon
reply other threads:[~2009-04-19 16:17 UTC|newest]
Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
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=c384c5ea0904190909i1b5ec8car615fdc76e302b871@mail.gmail.com \
--to=leon.woestenberg@gmail.com \
--cc=linux-kernel@vger.kernel.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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®