linux-kernel - Re: [RFD] Future tracing/instrumentation directions

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, 20 May 2010 08:19:04 -0400
From:	Theodore Tso <tytso@....EDU>
To:	Thomas Gleixner <tglx@...utronix.de>
Cc:	Frederic Weisbecker <fweisbec@...il.com>,
	Ingo Molnar <mingo@...e.hu>,
	Steven Rostedt <rostedt@...dmis.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Christoph Hellwig <hch@....de>,
	Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
	Li Zefan <lizf@...fujitsu.com>,
	Lai Jiangshan <laijs@...fujitsu.com>,
	Johannes Berg <johannes.berg@...el.com>,
	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>,
	Arnaldo Carvalho de Melo <acme@...radead.org>,
	Tom Zanussi <tzanussi@...il.com>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	Andi Kleen <andi@...stfloor.org>,
	Masami Hiramatsu <mhiramat@...hat.com>,
	Lin Ming <ming.m.lin@...el.com>,
	Cyrill Gorcunov <gorcunov@...il.com>,
	Mike Galbraith <efault@....de>,
	Paul Mackerras <paulus@...ba.org>,
	Hitoshi Mitake <mitake@....info.waseda.ac.jp>,
	Robert Richter <robert.richter@....com>
Subject: Re: [RFD] Future tracing/instrumentation directions


On May 20, 2010, at 7:07 AM, Thomas Gleixner wrote:
> 
> I don't care whether I do
> 
> echo 1 >/debug/..../XXX/enable
> cat /debug/tracing/trace
> 
> or
> 
> perfmini trace enable XXX
> perfmini trace dump
> 
> as long as the tool is built in a way that it does not need updates
> when we add trace points or other functionality to the kernel.

I won't care that much assuming that there is a bash_completion script so I can type "perf mini trace enable ext4_da_writep<TAB>" and the right thing happens....

The point is there are a number of advantages of the current system that go beyond just guaranteed availability of the binary->ascii translation tool.  Command competion, shell globbing to find interesting events you want to enable, etc., are also part of the picture

-- Ted

--
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/