From: Arnaldo Carvalho de Melo <acme@infradead.org>
To: Ingo Molnar <mingo@elte.hu>
Cc: "Roland McGrath" <roland@redhat.com>,
"Masami Hiramatsu" <mhiramat@redhat.com>,
"Frédéric 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>,
"H. Peter Anvin" <hpa@zytor.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: Using build-ids in perf tools was Re: [PATCH -tip perf/probes 00/10] x86 insn decoder bugfixes
Date: Tue, 3 Nov 2009 10:35:18 -0200 [thread overview]
Message-ID: <20091103123518.GA3009@ghostprotocols.net> (raw)
In-Reply-To: <20091103072439.GA19928@elte.hu>
Em Tue, Nov 03, 2009 at 08:24:39AM +0100, Ingo Molnar escreveu:
> * Roland McGrath <roland@redhat.com> wrote:
> > As Frank mentioned, the kernel's and modules' allocated ELF notes (and
> > thus build IDs) are already exposed in /sys. Tools like "eu-unstrip
> > -nk" use this information today.
>
> Ah, i didnt realize we link with --build-id already, unconditonally,
> since v2.6.23 (if ld supports it):
>
> | From 18991197b4b588255ccabf472ebc84db7b66a19c Mon Sep 17 00:00:00 2001
> | Subject: [PATCH] Use --build-id ld option
>
> So we have an SHA1 build-id already on the vmlinux and on modules, and
> it's exposed in /sys/*/*/notes. Just have to make use of it in
> tools/perf too.
I wasn't aware this was done upstream, ass-umed that it was only on
kernel specfiles, will cook up a patch for consideration.
- Arnaldo
prev parent reply other threads:[~2009-11-03 12:35 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-10-27 20:41 [PATCH -tip perf/probes 00/10] x86 insn decoder bugfixes Masami Hiramatsu
2009-10-27 20:42 ` [PATCH -tip perf/probes 01/10] x86: Fix SSE opcode map bug Masami Hiramatsu
2009-10-29 8:06 ` [tip:perf/probes] " tip-bot for Masami Hiramatsu
2009-10-27 20:42 ` [PATCH -tip perf/probes 02/10] x86: Merge INAT_REXPFX into INAT_PFX_* Masami Hiramatsu
2009-10-29 8:07 ` [tip:perf/probes] " tip-bot for Masami Hiramatsu
2009-10-27 20:42 ` [PATCH -tip perf/probes 03/10] x86: Add pclmulq to x86 opcode map Masami Hiramatsu
2009-10-29 8:07 ` [tip:perf/probes] " tip-bot for Masami Hiramatsu
2009-10-27 20:42 ` [PATCH -tip perf/probes 04/10] x86: AVX instruction set decoder support Masami Hiramatsu
2009-10-29 8:07 ` [tip:perf/probes] " tip-bot for Masami Hiramatsu
2009-10-27 20:42 ` [PATCH -tip perf/probes 05/10] x86: Add Intel FMA instructions to x86 opcode map Masami Hiramatsu
2009-10-29 8:08 ` [tip:perf/probes] " tip-bot for Masami Hiramatsu
2009-10-27 20:42 ` [PATCH -tip perf/probes 06/10] kprobe-tracer: Compare both of event-name and event-group to find probe Masami Hiramatsu
2009-10-29 8:08 ` [tip:perf/probes] " tip-bot for Masami Hiramatsu
2009-10-27 20:42 ` [PATCH -tip perf/probes 07/10] perf/probes: Exit searching after finding target function Masami Hiramatsu
2009-10-29 8:08 ` [tip:perf/probes] " tip-bot for Masami Hiramatsu
2009-10-27 20:43 ` [PATCH -tip perf/probes 08/10] perf/probes: Change command-line option of perf-probe Masami Hiramatsu
2009-10-29 8:08 ` [tip:perf/probes] perf/probes: Improve " tip-bot for Masami Hiramatsu
2009-10-27 20:43 ` [PATCH -tip perf/probes 09/10] perf/probes: Change probepoint syntax " Masami Hiramatsu
2009-10-29 8:09 ` [tip:perf/probes] perf/probes: Improve probe point " tip-bot for Masami Hiramatsu
2009-10-27 20:43 ` [PATCH -tip perf/probes 10/10] perf/probes: Support function entry relative line number Masami Hiramatsu
2009-10-29 8:09 ` [tip:perf/probes] " tip-bot for Masami Hiramatsu
2009-10-29 8:53 ` [PATCH -tip perf/probes 00/10] x86 insn decoder bugfixes Ingo Molnar
2009-10-29 15:10 ` Arnaldo Carvalho de Melo
2009-10-29 16:55 ` Masami Hiramatsu
2009-10-29 20:10 ` Masami Hiramatsu
2009-10-29 20:25 ` Josh Stone
2009-10-29 20:41 ` Masami Hiramatsu
2009-11-02 21:16 ` [PATCH -tip perf/probes 00/10] x86 insn decoder bugfixes and perf-probe syntax changes Masami Hiramatsu
2009-11-02 21:26 ` Frederic Weisbecker
2009-11-02 21:56 ` Masami Hiramatsu
2009-11-03 0:36 ` Masami Hiramatsu
2009-11-03 7:32 ` Ingo Molnar
2009-11-03 15:07 ` Masami Hiramatsu
2009-10-29 17:15 ` [PATCH -tip perf/probes 00/10] x86 insn decoder bugfixes Frank Ch. Eigler
2009-10-29 19:18 ` Roland McGrath
2009-11-03 7:24 ` Ingo Molnar
2009-11-03 12:35 ` Arnaldo Carvalho de Melo [this message]
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