netdev - Re: [PATCH][RFC] Infrastructure for compact call location representation

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]

Message-ID: <20100609084417.GW26335@laptop>
Date:	Wed, 9 Jun 2010 18:44:17 +1000
From:	Nick Piggin <npiggin@...e.de>
To:	Stephen Hemminger <shemminger@...tta.com>
Cc:	David VomLehn <dvomlehn@...co.com>, to@...mlehn-lnx2.corp.sa.net,
	netdev@...r.kernel.org
Subject: Re: [PATCH][RFC] Infrastructure for compact call location
 representation

On Tue, Jun 08, 2010 at 08:44:56AM -0700, Stephen Hemminger wrote:
> On Mon, 7 Jun 2010 17:30:52 -0700
> David VomLehn <dvomlehn@...co.com> wrote:
> > History
> > v2	Support small callsite IDs and split out out-of-band parameter
> > 	parsing.
> > V1	Initial release
> > 
> > Signed-off-by: David VomLehn <dvomlehn@...co.com>
> 
> This is really Linux Kernel Mailing List material (not just netdev). And it will
> be a hard sell to get it accepted, because it is basically an alternative call
> tracing mechanism, and there are already several of these in use or under development
> (see perf and ftrace).

What about a generic extension or layer on top of stacktrace that
does caching and unique IDs for stack traces. This way you can get
callsites or _full_ stack traces if required, and it shouldn't require
any extra magic in the net functions.

You would need a hash for stack traces to check for an existing trace,
and an idr to assign ids to traces.

--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html