linux-kernel - Re: [GIT PULL] tracing/kprobes: Syntax updates, introduce perf probe

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: <20091013102618.GA18794@elte.hu>
Date:	Tue, 13 Oct 2009 12:26:18 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Frederic Weisbecker <fweisbec@...il.com>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Masami Hiramatsu <mhiramat@...hat.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	Steven Rostedt <rostedt@...dmis.org>,
	Mike Galbraith <efault@....de>,
	Paul Mackerras <paulus@...ba.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Christoph Hellwig <hch@...radead.org>,
	Ananth N Mavinakayanahalli <ananth@...ibm.com>,
	Jim Keniston <jkenisto@...ibm.com>,
	"Frank Ch . Eigler" <fche@...hat.com>,
	Li Zefan <lizf@...fujitsu.com>
Subject: Re: [GIT PULL] tracing/kprobes: Syntax updates, introduce perf
	probe


* Frederic Weisbecker <fweisbec@...il.com> wrote:

> On Tue, Oct 13, 2009 at 08:13:23AM +0200, Ingo Molnar wrote:
> > 
> > * Frederic Weisbecker <fweisbec@...il.com> wrote:
> > 
> > > Ingo,
> > > 
> > > I've tested a little this set and it seems to work well. I can't test 
> > > the C expression parser (need some libdwarf cross-version 
> > > compatiblity), but I can create kprobes via low-level parameters, then 
> > > launch perf record and perf trace successfully. I'll need to update 
> > > perf trace to handle variables that start with '$' characters though.
> > > 
> > > Anyway, it's still unstable but I guess pulling it would help Masami 
> > > to continue without the need to handle the whole batch.
> > > 
> > > Please pull the tracing/kprobes branch that can be found at:
> > > 
> > > git://git.kernel.org/pub/scm/linux/kernel/git/frederic/random-tracing.git
> > > 	tracing/kprobes
> > 
> > Pulled, thanks Frederic.
> > 
> > >  Documentation/trace/kprobetrace.txt |   27 +-
> > >  kernel/trace/trace_kprobe.c         |  160 +++++---
> > >  tools/perf/Makefile                 |   10 +
> > >  tools/perf/builtin-probe.c          |  386 +++++++++++++++++++
> > >  tools/perf/builtin.h                |    1 +
> > >  tools/perf/perf.c                   |    1 +
> > >  tools/perf/util/probe-finder.c      |  690 +++++++++++++++++++++++++++++++++++
> > >  tools/perf/util/probe-finder.h      |   70 ++++
> > >  8 files changed, 1271 insertions(+), 74 deletions(-)
> > >  create mode 100644 tools/perf/builtin-probe.c
> > >  create mode 100644 tools/perf/util/probe-finder.c
> > >  create mode 100644 tools/perf/util/probe-finder.h
> > 
> > Hm, there's no x86 decoder change here - does this lot fixes the 
> > instruction decoder bug i reported some time ago? That is which keeps 
> > tracing/kprobes out of tip:master.
> > 
> > 	Ingo
> 
> 
> Not yet, I hope it's part of the last family of instruction set we are 
> missing.

ok.

We dont want topics to not be in tip:master for too long - we dont grow 
conflict resolutions nor does it get tested widely.

	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/