linux-kernel - Re: disabling group leader perf

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:	Thu, 9 Sep 2010 09:38:03 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	"Frank Ch. Eigler" <fche@...hat.com>
Cc:	Pekka Enberg <penberg@...nel.org>,
	Paul Mackerras <paulus@...ba.org>, Avi Kivity <avi@...hat.com>,
	Pekka Enberg <penberg@...helsinki.fi>,
	Tom Zanussi <tzanussi@...il.com>,
	=?iso-8859-1?Q?Fr=E9d=E9ric?= Weisbecker 
	<fweisbec@...il.com>, Steven Rostedt <rostedt@...dmis.org>,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	Peter Zijlstra <peterz@...radead.org>,
	linux-perf-users@...r.kernel.org,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: disabling group leader perf_event


* Frank Ch. Eigler <fche@...hat.com> wrote:

> mingo wrote:

 - slightly disparaging author quotation style: check

> > [...] Do you know some interesting usecase that would be excluded
> > via such address restrictions?
> 
> You could study tracing-oriented runtime systems such as those of
> dtrace, dprobes, or even systemtap, to help answer such questions.

 - slightly superior sounding style of discussion: check

> > Things like flexible arrays or more complex data structures such as
> > trees couldnt be used initially. More complex data structures would
> > need locking in any case. [...]  I.e. it would initially be
> > restricted roughly to code where halting can be proven. Still looks
> > interesting to me [...]
> 
> There are years of experience out there to learn from.  Note the sorts 
> of filtering expressions (never mind control logic) used in the prior 
> art, so that you can know what you're about to sacrifice by a 
> simple-sounding implementation.

 - offhanded, patronizing tone: check

 - widespread lack of specifics: check

 - dissing others while promoting systemtap: check

... so i dont really need to look at the 'From' field to see that this 
reply can only have come from 'fche'!

Thanks,

	Ingo
--
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/