Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754611AbbDHTs2 (ORCPT ); Wed, 8 Apr 2015 15:48:28 -0400 Received: from mail.kernel.org ([198.145.29.136]:44666 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753124AbbDHTs1 (ORCPT ); Wed, 8 Apr 2015 15:48:27 -0400 Date: Wed, 8 Apr 2015 16:48:26 -0300 From: Arnaldo Carvalho de Melo To: Masami Hiramatsu Cc: David Ahern , Jiri Olsa , Namhyung Kim , Ingo Molnar , Linux Kernel Mailing List Subject: [RFE] perf probe: Support globbing/regex in -a Message-ID: <20150408194826.GI5403@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline X-Url: http://acmel.wordpress.com User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 4137 Lines: 102 Hi Masami, In tools/perf constructors are named __new, and right now I want to know hoe many of each objects are being allocated, so I expected to be able to do: [root@zoo ~]# perf probe -x ~/bin/perf -a "*__new" Probe point '*__new' not found. Error: Failed to add events. [root@zoo ~]# And get the same result that I get from: [root@zoo ~]# perf probe -x ~/bin/perf `perf probe -x ~/bin/perf -F | grep __new | sed 's/^/-a /g' | sort -u` Added new event: probe_perf:call_path__new (on call_path__new in /home/acme/bin/perf) You can now use it in all perf tools, such as: perf record -e probe_perf:call_path__new -aR sleep 1 Added new event: probe_perf:call_path_root__new (on call_path_root__new in /home/acme/bin/perf) You can now use it in all perf tools, such as: perf record -e probe_perf:call_path_root__new -aR sleep 1 Added new event: probe_perf:call_return_processor__new (on call_return_processor__new in /home/acme/bin/perf) I.e. that I end up with: [root@zoo ~]# perf probe -l 2>&1 | grep probe_perf:.*__new probe_perf:call_path__new (on call_path__new@util/thread-stack.c in /home/acme/bin/perf) probe_perf:call_path_root__new (on call_path_root__new@util/thread-stack.c in /home/acme/bin/perf) probe_perf:call_return_processor__new (on call_return_processor__new@util/thread-stack.c in /home/acme/bin/perf) probe_perf:comm__new (on comm__new@util/comm.c in /home/acme/bin/perf) probe_perf:cpu_map__new (on cpu_map__new@util/cpumap.c in /home/acme/bin/perf) probe_perf:debuginfo__new (on debuginfo__new@util/probe-finder.c in /home/acme/bin/perf) probe_perf:disasm_line__new (on disasm_line__new@util/annotate.c in /home/acme/bin/perf) probe_perf:dso__new (on dso__new@util/dso.c in /home/acme/bin/perf) probe_perf:dso__new_map (on dso__new_map@util/dso.c in /home/acme/bin/perf) probe_perf:fdarray__new (on fdarray__new@fd/array.c in /home/acme/bin/perf) probe_perf:hist_browser__new (on hist_browser__new@ui/browsers/hists.c in /home/acme/bin/perf) probe_perf:thread_map__new_by_uid (on thread_map__new_by_uid@util/thread_map.c in /home/acme/bin/perf) probe_perf:thread_map__new_dummy (on thread_map__new_dummy@util/thread_map.c in /home/acme/bin/perf) probe_perf:thread_map__new_str (on thread_map__new_str@util/thread_map.c in /home/acme/bin/perf) [root@zoo ~]# Some more goodies to have, please consider better compressing the output of successfully installed probes, Something like: [root@zoo ~]# perf probe -x ~/bin/perf `perf probe -x ~/bin/perf -F | grep __new | sed 's/^/-a /g' | sort -u` Added 46 new events: probe_perf:call_path__new (on call_path__new in /home/acme/bin/perf) probe_perf:call_path_root__new (on call_path_root__new in /home/acme/bin/perf) probe_perf:call_return_processor__new (on call_return_processor__new in /home/acme/bin/perf) You can now use them in all perf tools, e.g.: perf record -e probe_perf:call_path_root__new -aR sleep 1 ------ Also that -l should output to stdout, so that we can grep it, also it would be nice if it -l worked like in perf list: [root@zoo ~]# perf probe -l probe_perf:* Semantic error :There is non-digit char in line number. Error: Command Parse Error. [root@zoo ~]# Fails, but: [root@zoo ~]# perf list *:*switch* List of pre-defined events (to be used in -e): cfg80211:cfg80211_ch_switch_notify [Tracepoint event] cfg80211:rdev_channel_switch [Tracepoint event] mac80211:api_chswitch_done [Tracepoint event] mac80211:drv_channel_switch [Tracepoint event] mac80211:drv_channel_switch_beacon [Tracepoint event] mac80211:drv_switch_vif_chanctx [Tracepoint event] sched:sched_switch [Tracepoint event] [root@zoo ~]# Works :-) - Arnaldo -- 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/