From: Arnaldo Carvalho de Melo <acme@redhat.com>
To: Masami Hiramatsu <mhiramat@redhat.com>
Cc: Ingo Molnar <mingo@elte.hu>,
Frederic Weisbecker <fweisbec@gmail.com>,
lkml <linux-kernel@vger.kernel.org>,
Steven Rostedt <rostedt@goodmis.org>,
Jim Keniston <jkenisto@us.ibm.com>,
Ananth N Mavinakayanahalli <ananth@in.ibm.com>,
Christoph Hellwig <hch@infradead.org>,
"Frank Ch. Eigler" <fche@redhat.com>,
Jason Baron <jbaron@redhat.com>,
"K.Prasad" <prasad@linux.vnet.ibm.com>,
Peter Zijlstra <peterz@infradead.org>,
Srikar Dronamraju <srikar@linux.vnet.ibm.com>,
systemtap <systemtap@sources.redhat.com>,
DLE <dle-develop@lists.sourceforge.net>
Subject: Re: [PATCH -tip 0/8] perf-probe updates
Date: Fri, 11 Dec 2009 20:51:00 -0000 [thread overview]
Message-ID: <20091211205141.GA1949@ghostprotocols.net> (raw)
In-Reply-To: <4B201993.9020005@redhat.com>
Em Wed, Dec 09, 2009 at 04:41:39PM -0500, Masami Hiramatsu escreveu:
> Masami Hiramatsu wrote:
> >> Here the failure was because the symbol does not exist.
> >
> > Yeah, so that's what I'm expecting to be implemented with below item :-)
> >
> > - Symbol search by libelf/kallsyms
> >
> > I guess it will be done by using symbol.c.
> > (Actually, current
>
> Oops, I might miss something, forgot it.
> actually, current perf probe doesn't decode kallsyms/elf, it just depends on
> kprobe-tracer. And kprobe-tracer will return -EINVAL not only if the symbol
> was not found, but also other reasons.
>
> So, if we want to show below message, we need to decode elf or kallsyms.
Should be easy now with my latest patch :-)
> > >
> > > There's similar problems in most other failure cases. Trying to remove a
> > > non-existent probe gives:
> > >
> > > # perf probe -d test
> > > Warning: event "probe:test" is not found.
next prev parent reply other threads:[~2009-12-11 20:51 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-12-08 21:58 Masami Hiramatsu
2009-12-08 21:58 ` [PATCH -tip 3/8] perf probe: Fix add-probe command syntax without --add option Masami Hiramatsu
2009-12-09 7:28 ` [tip:perf/urgent] " tip-bot for Masami Hiramatsu
2009-12-08 21:58 ` [PATCH -tip 2/8] perf probe: Change probe-added message more user-friendly Masami Hiramatsu
2009-12-09 7:27 ` [tip:perf/urgent] " tip-bot for Masami Hiramatsu
2009-12-08 21:58 ` [PATCH -tip 5/8] perf probe: Support vmlinux on cwd by default Masami Hiramatsu
2009-12-09 7:27 ` [tip:perf/urgent] " tip-bot for Masami Hiramatsu
2009-12-08 21:58 ` [PATCH -tip 1/8] perf probe: Change event list format Masami Hiramatsu
2009-12-09 7:28 ` [tip:perf/urgent] " tip-bot for Masami Hiramatsu
2009-12-08 21:58 ` [PATCH -tip 6/8] trace-kprobe: Support delete probe syntax Masami Hiramatsu
2009-12-09 7:27 ` [tip:perf/urgent] " tip-bot for Masami Hiramatsu
2009-12-08 21:59 ` [PATCH -tip 7/8] perf probe: Support --del option Masami Hiramatsu
2009-12-09 7:27 ` [tip:perf/urgent] " tip-bot for Masami Hiramatsu
2009-12-08 21:59 ` [PATCH -tip 4/8] perf probe: Remove event suffix number _0 Masami Hiramatsu
2009-12-09 7:29 ` [tip:perf/urgent] " tip-bot for Masami Hiramatsu
2009-12-08 21:59 ` [PATCH -tip 8/8] perf probe: Update perf-probe document Masami Hiramatsu
2009-12-09 7:28 ` [tip:perf/urgent] " tip-bot for Masami Hiramatsu
2009-12-09 7:22 ` [PATCH -tip 0/8] perf-probe updates Ingo Molnar
2009-12-09 8:44 ` Ingo Molnar
2009-12-09 17:36 ` Masami Hiramatsu
2009-12-09 21:41 ` Masami Hiramatsu
2009-12-11 20:51 ` Arnaldo Carvalho de Melo [this message]
2009-12-11 21:15 ` Masami Hiramatsu
2009-12-11 21:29 ` Arnaldo Carvalho de Melo
2010-01-05 22:40 Masami Hiramatsu
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