From: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
To: Namhyung Kim <namhyung@kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>,
Hemant Kumar <hemant@linux.vnet.ibm.com>,
linux-kernel@vger.kernel.org, srikar@linux.vnet.ibm.com,
peterz@infradead.org, oleg@redhat.com,
hegdevasant@linux.vnet.ibm.com, mingo@redhat.com,
systemtap@sourceware.org, aravinda@linux.vnet.ibm.com,
penberg@iki.fi, brendan.d.gregg@gmail.com,
"yrl.pp-manager.tt@hitachi.com" <yrl.pp-manager.tt@hitachi.com>
Subject: Re: Re: Re: [RFC] perf-cache command interface design
Date: Mon, 17 Nov 2014 22:09:00 -0000 [thread overview]
Message-ID: <546A71FE.5080500@hitachi.com> (raw)
In-Reply-To: <546968CB.1070802@hitachi.com>
(2014/11/17 12:17), Masami Hiramatsu wrote:
> (2014/11/17 12:08), Namhyung Kim wrote:
>> Hi Masami,
>>
>> On Thu, 13 Nov 2014 00:25:57 +0900, Masami Hiramatsu wrote:
>>> (2014/11/11 22:10), Arnaldo Carvalho de Melo wrote:
>>>> What I meant was, what is wrong with replacing:
>>>>
>>>> perf cache --probe <SPEC> # for the current kernel
>>>>
>>>> With:
>>>>
>>>> perf cache --add <PROBE-SPEC> # for the current kernel
>>>>
>>>> And have it figure out that what is being added is a probe and do the
>>>> right thing?
>>>
>>> As I've said previously, PROBE-SPEC can be same as FILES (imagine that a binary
>>> file which has same name function in the kernel.)
>>> Moreover, PROBE-SPEC requires the target binary(or kernel module) except for
>>> kernel probes. In that case, anyway we need -x or -m options with file-path
>>> for --add, that is very strange.
>>>
>>> e.g.
>>>
>>> For me,
>>>
>>> perf cache --add ./binary --probe '*'
>>>
>>> looks more natural than
>>>
>>> perf cache --add '*' -exec ./binary
>>>
>>> since in other cases(sdt/elf), we'll just do
>>>
>>> perf cache --add ./binary
>>
>> I prefer this too. But I'd like make the 'add' part a subcommand rather
>> than option like we do in perf kmem/kvm/list/lock/mem/sched ... And it
>> can handle multiple files at once. What about this?
>>
>> perf cache add [--elf|--sdt|--probe <spec>] <binary> [<binary>...]
>
> OK, that's good to me. And I think --elf/--sdt is meaningless.
> Only --probe option is required, since we can scan the elf file to
> add sdt cache when adding elf binary :)
BTW, what should we do if we put the probe cache on current running kernel?
perf cache add --probe <probe-spec>
and have no binary argument, is it OK?
Thanks,
--
Masami HIRAMATSU
Software Platform Research Dept. Linux Technology Research Center
Hitachi, Ltd., Yokohama Research Laboratory
E-mail: masami.hiramatsu.pt@hitachi.com
next prev parent reply other threads:[~2014-11-17 22:09 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-11-02 12:40 [PATCH v4 0/5] perf/sdt: SDT events listing/probing Hemant Kumar
2014-11-02 12:41 ` [PATCH v4 1/5] perf/sdt: ELF support for SDT Hemant Kumar
2014-11-02 12:42 ` [PATCH v4 2/5] perf/sdt: Add SDT events into a cache Hemant Kumar
2014-11-02 12:42 ` [PATCH v4 3/5] perf/sdt: Show SDT cache contents Hemant Kumar
2014-11-02 12:42 ` [PATCH v4 4/5] perf/sdt: Delete SDT events from cache Hemant Kumar
2014-11-02 12:43 ` [PATCH v4 5/5] perf/sdt: Add support to perf record to trace SDT events Hemant Kumar
2014-11-04 7:38 ` Namhyung Kim
2014-11-04 8:06 ` Hemant Kumar
2014-11-04 12:57 ` Masami Hiramatsu
[not found] ` <5459BD3E.7010804@linux.vnet.ibm.com>
2014-11-05 6:51 ` Hemant Kumar
2014-11-05 9:07 ` Masami Hiramatsu
2014-11-05 13:28 ` Arnaldo Carvalho de Melo
2014-11-05 7:06 ` Namhyung Kim
2014-11-05 9:05 ` Masami Hiramatsu
2014-11-06 2:16 ` Josh Stone
2014-11-06 5:34 ` Masami Hiramatsu
2014-11-06 7:06 ` Hemant Kumar
2014-11-06 14:56 ` Masami Hiramatsu
2014-11-07 8:21 ` [RFC] perf-cache command interface design Masami Hiramatsu
2014-11-07 8:42 ` Peter Zijlstra
2014-11-07 13:58 ` [PATCH RESEND 1/2] perf tools: Move disable_buildid_cache() to util/build-id.c Namhyung Kim
2014-11-07 13:58 ` [PATCH 2/2] perf tools: Add record.use-buildid-cache config option Namhyung Kim
2014-11-07 15:16 ` [RFC] perf-cache command interface design David Ahern
2014-11-07 15:33 ` Arnaldo Carvalho de Melo
2014-11-07 10:51 ` Hemant Kumar
2014-11-08 4:15 ` Masami Hiramatsu
2014-11-07 14:38 ` Arnaldo Carvalho de Melo
2014-11-08 4:26 ` Masami Hiramatsu
2014-11-07 14:43 ` Namhyung Kim
2014-11-08 4:38 ` Masami Hiramatsu
2014-11-10 10:59 ` Masami Hiramatsu
2014-11-10 12:23 ` Arnaldo Carvalho de Melo
2014-11-11 6:53 ` Masami Hiramatsu
2014-11-11 13:10 ` Arnaldo Carvalho de Melo
2014-11-12 15:26 ` Masami Hiramatsu
2014-11-17 3:09 ` Namhyung Kim
2014-11-17 3:17 ` Masami Hiramatsu
2014-11-17 22:09 ` Masami Hiramatsu [this message]
2014-11-18 4:51 ` Namhyung Kim
2014-11-18 11:16 ` Masami Hiramatsu
2014-11-18 4:41 ` Namhyung Kim
2014-11-18 10:32 ` Masami Hiramatsu
2014-11-17 18:59 ` Arnaldo Carvalho de Melo
2014-11-18 4:46 ` Namhyung Kim
2014-11-10 12:05 ` Hagen Paul Pfeifer
2014-11-10 12:31 ` Arnaldo Carvalho de Melo
2014-11-10 12:50 ` Peter Zijlstra
2014-11-10 13:37 ` Hagen Paul Pfeifer
2014-11-05 18:24 ` [PATCH v4 5/5] perf/sdt: Add support to perf record to trace SDT events Hemant Kumar
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=546A71FE.5080500@hitachi.com \
--to=masami.hiramatsu.pt@hitachi.com \
--cc=acme@redhat.com \
--cc=aravinda@linux.vnet.ibm.com \
--cc=brendan.d.gregg@gmail.com \
--cc=hegdevasant@linux.vnet.ibm.com \
--cc=hemant@linux.vnet.ibm.com \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@redhat.com \
--cc=namhyung@kernel.org \
--cc=oleg@redhat.com \
--cc=penberg@iki.fi \
--cc=peterz@infradead.org \
--cc=srikar@linux.vnet.ibm.com \
--cc=systemtap@sourceware.org \
--cc=yrl.pp-manager.tt@hitachi.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).