From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id A6029C432C0 for ; Mon, 2 Dec 2019 19:05:18 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 67704217F9 for ; Mon, 2 Dec 2019 19:05:18 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="CWvcWkOn" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728114AbfLBTFR (ORCPT ); Mon, 2 Dec 2019 14:05:17 -0500 Received: from mail-qv1-f65.google.com ([209.85.219.65]:35999 "EHLO mail-qv1-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727580AbfLBTFR (ORCPT ); Mon, 2 Dec 2019 14:05:17 -0500 Received: by mail-qv1-f65.google.com with SMTP id b18so317018qvy.3 for ; Mon, 02 Dec 2019 11:05:16 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:date:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=8CTZ5aUql8YCdrVBVzvU+J/sOnTSXZSchPxgBH+nZgs=; b=CWvcWkOnAORpV+H1GetLi5DUi/zqcgn/H7FcmEuCQZYkKfq3KWXvJLzT5ljD/2Qjq6 BDmBABbaazS6hz3U3e7UmOf2jF3U4RqN694MIyiS+e8jBmYjsBslzdK8Q7sUbdE8/Znb DHEWPdw/hF/FckRn5uGeYvzWmZST+SyCySi71epSLtEBpQMXuC+z2PtTB9kgUvHAuLlA lM3tNxvj3SgD7rQlCvzzbkkkPVm4zpQchlYEPQgqkylGWHA2aquG+WYNBmg7Wikccwc5 kki4ypiC4I+7eWO2jX3x6zuPvZcidTroi1ivPmfxTKBeCzfaTHP65aNXGdlzHqQvZpb/ 6xFQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:date:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=8CTZ5aUql8YCdrVBVzvU+J/sOnTSXZSchPxgBH+nZgs=; b=iXwX4pMlSerlNq0h1+Pp0IkynQk6l8zZfihcE90XGZKaYDOemrY/NId4BWQqUBN6cn DVBUopQJQBHn6U+Dn88XEDgbwlYlDR4e6nHt1SqZbKLawjMTD5907YAtvASIOY21TwIA YmKXo97HNDg6/0reKj5cbGMgpZGji0a9hN2pNU5TVT1vvuQZhteNtOs1BhlHfWWJrDc8 VGUAfD6SI+qCkPRcQgxB6wji7FRsoJ5yTcBWBVCtvucA51MyGxzq1zFLWC60b/h5azFo Yk8d3r74wWMQ2Y9gqLSWe/UQIVqxk+bywAs9ewCKcoj/FLnZykCDPNoKeepy/hUvAjNN SJYg== X-Gm-Message-State: APjAAAXY05KnB50eTyQIrXdMaVaGp11tJnnRKBQQE7yCZ5qwr1jBZn1v GoOyPVMIJhjVE2xzOuR59j1EE+iK/SY= X-Google-Smtp-Source: APXvYqxdCedcEkd13/IT2Wl/epQDjwayZiBySEnzcOI2CoC6ykiBIBLiDcVXDxDqxLxQWgjrj1f/VA== X-Received: by 2002:ad4:5525:: with SMTP id ba5mr568925qvb.117.1575313515725; Mon, 02 Dec 2019 11:05:15 -0800 (PST) Received: from quaco.ghostprotocols.net ([190.15.121.82]) by smtp.gmail.com with ESMTPSA id c80sm258945qkb.35.2019.12.02.11.05.14 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 02 Dec 2019 11:05:15 -0800 (PST) From: Arnaldo Carvalho de Melo X-Google-Original-From: Arnaldo Carvalho de Melo Received: by quaco.ghostprotocols.net (Postfix, from userid 1000) id 733D0405B6; Mon, 2 Dec 2019 16:04:52 -0300 (-03) Date: Mon, 2 Dec 2019 16:04:52 -0300 To: Masami Hiramatsu Cc: Adrian Hunter , Jiri Olsa , Namhyung Kim , Linux Kernel Mailing List Subject: Re: perf probe -d failing to delete probes Message-ID: <20191202190452.GI4063@kernel.org> References: <20191129151324.GA26963@kernel.org> <20191202185958.GH4063@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20191202185958.GH4063@kernel.org> X-Url: http://acmel.wordpress.com User-Agent: Mutt/1.12.1 (2019-06-15) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Em Mon, Dec 02, 2019 at 03:59:58PM -0300, Arnaldo Carvalho de Melo escreveu: > Em Fri, Nov 29, 2019 at 12:13:24PM -0300, Arnaldo Carvalho de Melo escreveu: > > > > Hi Masami, > > > > Can you please take a look at this? > > > > [root@quaco perf]# perf probe -l > > probe_perf:map__map_ip (on ui__warn_map_erange+222@perf/tools/perf/builtin-top.c in /home/acme/bin/perf) > > probe_perf:map__map_ip (on ui__warn_map_erange+222@perf/tools/perf/builtin-top.c in /home/acme/bin/perf) > > probe_perf:map__map_ip (on perf_evlist__set_paused+222@util/evlist.c in /home/acme/bin/perf) > > probe_perf:map__map_ip (on perf_evlist__resume+222@util/evlist.c in /home/acme/bin/perf) > > probe_perf:map__map_ip (on perf_evsel__group_desc+222@util/evsel.c in /home/acme/bin/perf) > > probe_perf:map__map_ip (on svg_partial_wakeline+222@util/svghelper.c in /home/acme/bin/perf) > > [root@quaco perf]# perf probe -d probe_perf:map_* > > "probe_perf:map_*" does not hit any event. > > Error: Failed to delete events. > > [root@quaco perf]# perf probe -d probe_perf:* > > "probe_perf:*" does not hit any event. > > Error: Failed to delete events. > > [root@quaco perf]# perf probe -d probe*:* > > "probe*:*" does not hit any event. > > Error: Failed to delete events. > > [root@quaco perf]# perf probe -d '*:*' > > "*:*" does not hit any event. > > Error: Failed to delete events. > > [root@quaco perf]# > > [root@quaco ~]# perf probe -l > probe_perf:map__map_ip (on process_sample_event+6663@tools/perf/builtin-script.c in /home/acme/bin/perf) > probe_perf:map__map_ip (on process_sample_event+6739@tools/perf/builtin-script.c in /home/acme/bin/perf) > probe_perf:map__map_ip (on unwind_entry+436@util/machine.c in /home/acme/bin/perf) > probe_perf:map__map_ip (on machine__process_extra_kernel_map+31@util/machine.c in /home/acme/bin/perf) > probe_perf:map__map_ip (on __maps__insert+192@util/map.c in /home/acme/bin/perf) > probe_perf:map__map_ip (on dso__process_kernel_symbol+336@util/symbol-elf.c in /home/acme/bin/perf) > [root@quaco ~]# ls -la /sys/kernel/debug/tracing/events/probe_perf/ > total 0 > drwxr-xr-x. 3 root root 0 Nov 29 12:09 . > drwxr-xr-x. 113 root root 0 Dec 2 15:56 .. > -rw-r--r--. 1 root root 0 Nov 29 12:09 enable > -rw-r--r--. 1 root root 0 Nov 29 12:09 filter > drwxr-xr-x. 2 root root 0 Nov 29 12:09 map__map_ip > [root@quaco ~]# > > Trying to figure out how to remove it via debugfs/tracefs [root@quaco ~]# cat /sys/kernel/debug/tracing/dynamic_events p:probe_perf/map__map_ip /home/acme/bin/perf:0x000000000005f257 p:probe_perf/map__map_ip /home/acme/bin/perf:0x000000000005f2a3 p:probe_perf/map__map_ip /home/acme/bin/perf:0x00000000000fda24 p:probe_perf/map__map_ip /home/acme/bin/perf:0x00000000000fdacf p:probe_perf/map__map_ip /home/acme/bin/perf:0x00000000001028d0 p:probe_perf/map__map_ip /home/acme/bin/perf:0x000000000016dd90 [root@quaco ~]# [root@quaco ~]# cat /sys/kernel/debug/tracing/kprobe_events [root@quaco ~]# [root@quaco ~]# echo > /sys/kernel/debug/tracing/kprobe_events [root@quaco ~]# perf probe -l probe_perf:map__map_ip (on process_sample_event+6663@tools/perf/builtin-script.c in /home/acme/bin/perf) probe_perf:map__map_ip (on process_sample_event+6739@tools/perf/builtin-script.c in /home/acme/bin/perf) probe_perf:map__map_ip (on unwind_entry+436@util/machine.c in /home/acme/bin/perf) probe_perf:map__map_ip (on machine__process_extra_kernel_map+31@util/machine.c in /home/acme/bin/perf) probe_perf:map__map_ip (on __maps__insert+192@util/map.c in /home/acme/bin/perf) probe_perf:map__map_ip (on dso__process_kernel_symbol+336@util/symbol-elf.c in /home/acme/bin/perf) [root@quaco ~]# Finally it works: [root@quaco ~]# echo > /sys/kernel/debug/tracing/dynamic_events [root@quaco ~]# cat /sys/kernel/debug/tracing/dynamic_events [root@quaco ~]# [root@quaco ~]# perf probe -l [root@quaco ~]# A workaround, now to find out why 'perf probe -d '*:*' and the other reported variants are failing... - Arnaldo