From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 18261 invoked by alias); 10 Nov 2014 10:59:35 -0000 Mailing-List: contact systemtap-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Post: List-Help: , Sender: systemtap-owner@sourceware.org Received: (qmail 18248 invoked by uid 89); 10 Nov 2014 10:59:35 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-1.5 required=5.0 tests=AWL,BAYES_00,SPF_PASS autolearn=ham version=3.3.2 X-HELO: mail9.hitachi.co.jp Received: from mail9.hitachi.co.jp (HELO mail9.hitachi.co.jp) (133.145.228.44) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with ESMTP; Mon, 10 Nov 2014 10:59:33 +0000 Received: from mlsv8.hitachi.co.jp (unknown [133.144.234.166]) by mail9.hitachi.co.jp (Postfix) with ESMTP id 90F7037C88; Mon, 10 Nov 2014 19:59:30 +0900 (JST) Received: from mfilter05.hitachi.co.jp by mlsv8.hitachi.co.jp (8.13.1/8.13.1) id sAAAxUbn004359; Mon, 10 Nov 2014 19:59:30 +0900 Received: from vshuts04.hitachi.co.jp (vshuts04.hitachi.co.jp [10.201.6.86]) by mfilter05.hitachi.co.jp (Switch-3.3.4/Switch-3.3.4) with ESMTP id sAAAxR5a004800; Mon, 10 Nov 2014 19:59:29 +0900 Received: from gxml20a.ad.clb.hitachi.co.jp (unknown [158.213.157.160]) by vshuts04.hitachi.co.jp (Postfix) with ESMTP id 697EE14003B; Mon, 10 Nov 2014 19:59:29 +0900 (JST) Received: from [10.198.220.63] by gxml20a.ad.clb.hitachi.co.jp (Switch-3.1.10/Switch-3.1.9) id 6AAA2NTHE00005F88; Mon, 10 Nov 2014 19:59:29 +0900 Message-ID: <54609A8C.4050308@hitachi.com> Date: Mon, 10 Nov 2014 10:59:00 -0000 From: Masami Hiramatsu User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:13.0) Gecko/20120614 Thunderbird/13.0.1 MIME-Version: 1.0 To: Hemant Kumar , Namhyung Kim , Arnaldo Carvalho de Melo Cc: 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" Subject: Re: [RFC] perf-cache command interface design References: <20141102105006.21708.28734.stgit@hemant-fedora> <20141102105557.21708.19032.stgit@hemant-fedora> <87lhnr5sbl.fsf@sejong.aot.lge.com> <54588905.7040002@linux.vnet.ibm.com> <5458CD15.4010101@hitachi.com> <874muew2hk.fsf@sejong.aot.lge.com> <5459E865.6050207@hitachi.com> <545B1DDE.9000202@linux.vnet.ibm.com> <545C80F4.4020905@hitachi.com> In-Reply-To: <545C80F4.4020905@hitachi.com> Content-Type: text/plain; charset=ISO-2022-JP Content-Transfer-Encoding: 7bit X-IsSubscribed: yes X-SW-Source: 2014-q4/txt/msg00131.txt.bz2 Hello, Here is the second try for the probe-cache. This version simplifies the synopsis, and unifies the SDT and probe caches. Please give me your comments/ideas! Command-line Synopsis ===================== Add elf(or symbols) and probe-caches of SDT if exists in perf cache --add [--probe ] # for user programs perf cache --kcore [--probe ] # for kcore ? perf cache --probe # for the current kernel Remove caches related to or perf cache --remove | Show all probe caches(including SDT) or buildids perf cache --list [probe|buildid] Delete existing probe-cache entries for kernel, or/and . perf cache　--probe-del [:][@][#] Query the probe definitions. perf cache --query [:][@][#] File Format =========== All the cache files are placed under ~/.debug/ by default. Elf caches are ~/.debug/path/to/file/bu/ildid/elf Symbols caches are ~/.debug/path/to/file/bu/ildid/syms Probes(and SDT) are ~/.debug/path/to/file/bu/ildid/probes And ~/.debug/path/to/file/bu/ildid/ is linked to ~/.debug/.buildid/bu/ildid Optionally, we can gzip the probes file. This probe caches contain probe-definitions as following format. ---- #buildid:BUILDID #spec:SDT p:sdt_/ PATH:OFFSET [ARGS] ... #spec:* $params p:probe_/ _text+OFFSET [ARGS] ... ---- So the #spec: line gives the information what probe spec has been given. This will be used for updating. And all the "probe_" and "sdt_" prefix will be replaced by % in the command line, e.g. perf record -e %/ -> this records sdt_PROVIDER/EVENT Thank you, -- Masami HIRAMATSU Software Platform Research Dept. Linux Technology Research Center Hitachi, Ltd., Yokohama Research Laboratory E-mail: masami.hiramatsu.pt@hitachi.com