Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751422AbaKEGJo (ORCPT ); Wed, 5 Nov 2014 01:09:44 -0500 Received: from lgeamrelo01.lge.com ([156.147.1.125]:47361 "EHLO lgeamrelo01.lge.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751369AbaKEGJk (ORCPT ); Wed, 5 Nov 2014 01:09:40 -0500 X-Original-SENDERIP: 10.177.222.235 X-Original-MAILFROM: namhyung@gmail.com From: Namhyung Kim To: Masami Hiramatsu Cc: Arnaldo Carvalho de Melo , srikar@linux.vnet.ibm.com, Peter Zijlstra , Linux Kernel Mailing List , Brendan Gregg , yrl.pp-manager.tt@hitachi.com, Hemant Kumar , Ingo Molnar Subject: Re: [PATCH perf/core 0/6] perf-probe: Bugfix and add new options for cache References: <20141031185128.27889.32747.stgit@localhost.localdomain> <87389z7j3x.fsf@sejong.aot.lge.com> <545867BC.9070000@hitachi.com> Date: Wed, 05 Nov 2014 15:09:32 +0900 In-Reply-To: <545867BC.9070000@hitachi.com> (Masami Hiramatsu's message of "Tue, 04 Nov 2014 14:44:28 +0900") Message-ID: <87lhnqw543.fsf@sejong.aot.lge.com> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.1 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Masami, On Tue, 04 Nov 2014 14:44:28 +0900, Masami Hiramatsu wrote: > (2014/11/04 12:14), Namhyung Kim wrote: >> Hi Masami, >> >> On Fri, 31 Oct 2014 14:51:29 -0400, Masami Hiramatsu wrote: >>> So by using all of them, we can make an "event cache" file on all >>> functions (except for inlined functions) as below. >>> >>> # perf probe --max-probes=100000 --no-inlines -a '* $params' -o event.cache >>> >>> builds "event.cache" file in which event settings for >>> all function entries, like below; >>> >>> p:probe/reset_early_page_tables _text+12980741 >>> p:probe/copy_bootdata _text+12980830 real_mode_data=%di:u64 >>> p:probe/exit_amd_microcode _text+14692680 >>> p:probe/early_make_pgtable _text+12981274 address=%di:u64 >>> p:probe/x86_64_start_reservations _text+12981700 real_mode_data=%di:u64 >>> p:probe/x86_64_start_kernel _text+12981744 real_mode_data=%di:u64 >>> p:probe/reserve_ebda_region _text+12982117 >> >> Does this event cache support kernel modules too? AFAIK it can have a >> different address whenever loaded even on a same kernel. > > Yes, for the modules perf probe uses target function symbol directly instead > of _text. > > ---- > perf probe -m xfs -o - -q -a xfs_acl_exists > p:probe/xfs_acl_exists xfs:xfs_acl_exists+0 > ---- Ah, great! :) Thanks, Namhyung -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/