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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 99546ECAAD5 for ; Fri, 2 Sep 2022 19:17:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230242AbiIBTRt (ORCPT ); Fri, 2 Sep 2022 15:17:49 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56574 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229920AbiIBTRs (ORCPT ); Fri, 2 Sep 2022 15:17:48 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 99DCEF32C5; Fri, 2 Sep 2022 12:17:47 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 36B5B622A6; Fri, 2 Sep 2022 19:17:47 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 736C1C433D6; Fri, 2 Sep 2022 19:17:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1662146266; bh=sOsKQGQG/JU/8JEqfY8COImteIEYSw1VOSMiywIl1iE=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=a28bxLGeVEp7adLLiC0vKLzoSnEyXo36lWyYMpquXd2Sr+m6xcyJOy/tgqYKQh+9n 1gYMir/O/WsntCkz/F1y5o0NGfEfeCcJR6SRQDtUFoyrLNRSFsdatGizE6zEV1EBe0 z1vjTTr5omAJz48vtbYy+PpxfIAlGK0djD/QI2HitWCy+EgF8InWN3ZY3qJ/YDP6QH CYDpcklPOHWZOrGkWAASIN9am4Gs5cJhU143wk4/U8ytQBLMxJx4tlTHFTiWV7y6u3 FMFmt+KiYlynztcaleWEqfZYS06F69+ROm4xxvW2oGPR1HwEFrrDgHfRPGyM9HA/6d lHNfaZxbgyO7g== Received: by quaco.ghostprotocols.net (Postfix, from userid 1000) id C4917404A1; Fri, 2 Sep 2022 16:17:43 -0300 (-03) Date: Fri, 2 Sep 2022 16:17:43 -0300 From: Arnaldo Carvalho de Melo To: Adrian Hunter Cc: =?utf-8?B?VG9tw6HFoQ==?= Trnka , linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org, Peter Zijlstra , Ingo Molnar Subject: Re: perf top -p broken for multithreaded processes since 5.19 Message-ID: References: <10137382.nUPlyArG6x@mintaka.ncbr.muni.cz> <2fd9b620-e9a8-9cd9-1b4a-6b13d829b2ae@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <2fd9b620-e9a8-9cd9-1b4a-6b13d829b2ae@intel.com> X-Url: http://acmel.wordpress.com Precedence: bulk List-ID: X-Mailing-List: linux-perf-users@vger.kernel.org Em Fri, Sep 02, 2022 at 05:50:22PM +0300, Adrian Hunter escreveu: > On 2/09/22 17:46, Tomáš Trnka wrote: > > Hello, > > > > A bug in perf v5.19 and newer completely breaks monitoring multithreaded > > processes using "perf top -p". The tool fails to start with "Failed to mmap > > with 22 (Invalid argument)". It still seems to work fine on single-threaded > > processes. "perf record" is also unaffected. > > It has been reported here: > > https://bugzilla.kernel.org/show_bug.cgi?id=216441 If I do: ⬢[acme@toolbox perf-urgent]$ git log -2 commit dfeb0bc60782471c293938e71b1a1117cfac2cb3 (HEAD -> perf/urgent) Author: Arnaldo Carvalho de Melo Date: Fri Sep 2 16:15:39 2022 -0300 Revert "libperf evlist: Check nr_mmaps is correct" This reverts commit 4ce47d842d4c16c07b135b8a7975b8f0672bcc0e. Signed-off-by: Arnaldo Carvalho de Melo commit 78cd283f6b8ab701cb35eafd5af8140560a88f16 Author: Arnaldo Carvalho de Melo Date: Fri Sep 2 16:13:41 2022 -0300 Revert "libperf evlist: Allow mixing per-thread and per-cpu mmaps" This reverts commit ae4f8ae16a07896403c90305d4b9be27f657c1fc. Signed-off-by: Arnaldo Carvalho de Melo ⬢[acme@toolbox perf-urgent]$ It works again, Tomáš can you please try doing this to see if this works for you? - Arnaldo