linux-kernel - How to avoid data copies in a driver ?

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:	Wed, 14 May 2008 21:54:03 +0200
From:	"Francis Moreau" <francis.moro@...il.com>
To:	linux-kernel@...r.kernel.org
Subject: How to avoid data copies in a driver ?

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 ?

Thanks,
-- 
Francis
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/