From mboxrd@z Thu Jan 1 00:00:00 1970 From: Masami Hiramatsu Subject: Re: Can not trace perf-probe event (made to probe the main function) with perf-top Date: Sun, 20 Nov 2016 22:26:17 +0900 Message-ID: <20161120222617.39bc8304001c7690f82d52b4@kernel.org> References: Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Return-path: Received: from mail.kernel.org ([198.145.29.136]:40222 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751870AbcKTN01 (ORCPT ); Sun, 20 Nov 2016 08:26:27 -0500 In-Reply-To: Sender: linux-perf-users-owner@vger.kernel.org List-ID: To: HOUSSEN Franck Cc: linux-perf-users@vger.kernel.org Hello Franck, On Sat, 19 Nov 2016 17:36:39 +0100 HOUSSEN Franck wrote: > Can not trace perf-probe event (made to probe the main function) with > perf-top ? (see ReadMe.txt - works with perf-report and -s option) > Can someone help ? Missing option ? Known bug / limitation ? >From ReadMe.txt; ---- ~> sudo perf top -K --stdio -s sym,dso -e probe_main:main PerfTop: 0 irqs/sec kernel: 0.0% exact: 0.0% [1Hz probe_main:main], (all, 4 CPUs) ------------------------------------------------------------------------------------------- ---- Have you tried to run ./main program while running "perf top"? Since the main function is just called once when starting run the main program, without invoking it, the probe_main:main may never be occured. Thanks, -- Masami Hiramatsu