Re: [PATCH 3/5] v2 seccomp_filters: Enable ftrace-based system call filtering

Colin Walters
2011-05-26T14:37:15Z

On Wed, May 25, 2011 at 4:01 PM, Linus Torvalds
<torvalds@linux-foundation.org> wrote:
>
> As to your example of apache modules - last I saw, most of those were
> written in high-level scripting languages that almost invariably end
> up using quite a bit of the system call interfaces. And more
> importantly, almost nobody does unportable code.

Well, there's a difference between frameworks and applications. At
least in GNOME e.g. we've been generally good at picking up and
transparently taking advantage of Linux-specific stuff where possible
like splice() in g_file_copy(), and in this cycle I'll probably end up
using signalfd() to fix a long standing race condition.

> So hey, I'm willing to be convinced. But I'll need more than people
> _saying_ that they'd be interested. Because judging by past
> performance, nobody ever uses esoteric cool new features.

I'm curious which features you feel are esoteric and cool but unused?