From: Masami Hiramatsu <mhiramat@redhat.com>
To: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>,
Arnaldo Carvalho de Melo <acme@redhat.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: Re: [PATCH -tip perf/probes 00/10] x86 insn decoder bugfixes and perf-probe syntax changes
Date: Mon, 02 Nov 2009 16:56:59 -0500 [thread overview]
Message-ID: <4AEF55AB.50701@redhat.com> (raw)
In-Reply-To: <20091102212632.GH4880@nowhere>
Frederic Weisbecker wrote:
> On Mon, Nov 02, 2009 at 04:16:25PM -0500, Masami Hiramatsu wrote:
>> Masami Hiramatsu wrote:
>>> Ingo Molnar wrote:
>>>> What we want here is two fold:
>>>>
>>>> - enable kprobes event support when perf events is enabled and kprobes
>>>> is enabled. We dont want another config option for it.
>>>
>>> Sure, at least that combination should enable kprobe-tracer forcibly.
>>
>> Hmm, someone may not want to enables kprobe-tracer. Perhaps,
>> "default y if (EVENT_PROFILE)" is enough, isn't it?
>>
>
>
> I guess it should be sufficient yeah. We want to strongly recommend
> the kprobe events if we have enabled perf, but we don't want to force
> it.
>
> Also in this case we need a verbose runtime report of the lack of this
> tracer in debugfs from perf probe if needed.
Sure, error message should be changed as warning user to enable
CONFIG_KPROBE_TRACER :-)
Thank you,
--
Masami Hiramatsu
Software Engineer
Hitachi Computer Products (America), Inc.
Software Solutions Division
e-mail: mhiramat@redhat.com
next prev parent reply other threads:[~2009-11-02 21:58 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 [this message]
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 ` Using build-ids in perf tools was " Arnaldo Carvalho de Melo
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