linux-kernel - Re: [PATCH] x86: add the debugfs interface for the sysprof tool

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

Date:	Sat, 23 Feb 2008 19:12:27 -0800
From:	Nicholas Miell <nmiell@...cast.net>
To:	Pekka Enberg <penberg@...helsinki.fi>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Arjan van de Ven <arjan@...radead.org>,
	linux-kernel@...r.kernel.org, mingo@...e.hu, sandmann@...hat.com,
	tglx@...x.de, hpa@...or.com
Subject: Re: [PATCH] x86: add the debugfs interface for the sysprof tool


On Sun, 2008-02-24 at 04:49 +0200, Pekka Enberg wrote:
> Hi Andrew,
> 
> Andrew Morton wrote:
> > I didn't need to write a new kernel module to enable that
> > thirteen-character shell script, and I don't believe one needs to write a
> > new kernel module to put a nice easy-to-use GUI around oprofile either.
> > 
> > This is one of those i-cant-believe-im-having-this-discussion discussions.
> 
> Sysprof tracks the full stack frame so it can provide meaningful call 
> tree (who called what) which is invaluable for spotting hot _paths_. I 
> don't see how oprofile can do that as it tracks instruction pointers only.
> 
> 			Pekka

You could try passing the --callgraph option to opcontrol.

-- 
Nicholas Miell <nmiell@...cast.net>

--
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/