linux-kernel - Re: Kernel driver vs libusb performance

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: Windows password security audit tool. GUI, reports in PDF.

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

Date:	Fri, 11 Jan 2013 16:10:30 +0200
From:	Ozan Çağlayan <ozancag@...il.com>
To:	Greg KH <gregkh@...uxfoundation.org>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: Kernel driver vs libusb performance

> Ah, my sympathies, USB on a rpi is horrible, and you will have all sorts
> of nasty issues, no matter how you end up doing this (in the kernel or
> userspace).

What kind of issues? Currently I can read from the device without
problem. But, I had very weird problems with 2 uvc cameras, you're
right.

> Test it out and see.  I really don't think that user vs. kernel space is
> going to be the issue here, I think you are going to see some very real
> problems with the hardware itself in this area.
>
> Best of luck,

Well If I were you I would probably write that simple driver in a few
hours but seen that I am not you, I wanted to learn will the effort
worth the result :)

Anyway, thanks!

-- 
Ozan Çağlayan
Research Assistant
Galatasaray University - Computer Engineering Dept.
http://www.ozancaglayan.com
--
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/