From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755386AbdERUFl (ORCPT ); Thu, 18 May 2017 16:05:41 -0400 Received: from mail.kdab.com ([176.9.126.58]:33812 "EHLO mail.kdab.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753250AbdERUFk (ORCPT ); Thu, 18 May 2017 16:05:40 -0400 From: Milian Wolff To: Linux-kernel@vger.kernel.org Cc: linux-perf-users@vger.kernel.org Subject: Re: [PATCH 0/7] generate full callchain cursor entries for inlined frames Date: Thu, 18 May 2017 22:05:36 +0200 Message-ID: <2176198.pfBDoCjSEJ@agathebauer> Organization: KDAB (Deutschland) GmbH&Co KG, a KDAB Group company In-Reply-To: <20170518193411.22380-1-milian.wolff@kdab.com> References: <20170518193411.22380-1-milian.wolff@kdab.com> MIME-Version: 1.0 Content-Type: multipart/signed; boundary="nextPart373812496.SIgR8EvAlu"; micalg="sha1"; protocol="application/pkcs7-signature" Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --nextPart373812496.SIgR8EvAlu Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" On Donnerstag, 18. Mai 2017 21:34:04 CEST Milian Wolff wrote: > This series of patches completely reworks the way inline frames are handled. > Instead of querying for the inline nodes on-demand in the individual tools, > we now create proper callchain nodes for inlined frames. The advantages > this approach brings are numerous: > > - less duplicated code in the individual browser > - aggregated cost for inlined frames for the --children top-down list > - various bug fixes that arose from querying for a srcline/symbol based on > the IP of a sample, which will always point to the last inlined frame > instead of the corresponding non-inlined frame > - overall much better support for visualizing cost for heavily-inlined C++ > code, which simply was confusing and unreliably before > - srcline honors the global setting as to whether full paths or basenames > should be shown > > For comparison, below lists the output before and after for `perf script` > and `perf report`. The example file I used to generate the perf data is: And of course shortly after sending this patch series I notice the first issues ;-) The new behavior shows confusing results for `-g function` because match_chain uses sym->start. I fixed this locally to compare the actual function name if either of the two symbols is an inlined fake symbol: https://github.com/milianw/linux/commit/ a1fa4486c19976f36d6ee7df263676e888c2bdb9 Before resending this whole series, it would be great if people could review the stuff in here such that I know whether I'm on the right track. You can checkout my clone from github for quick testing: https://github.com/milianw/linux/commits/wip/distinguish-inliners Thanks -- Milian Wolff | milian.wolff@kdab.com | Software Engineer KDAB (Deutschland) GmbH&Co KG, a KDAB Group company Tel: +49-30-521325470 KDAB - The Qt Experts --nextPart373812496.SIgR8EvAlu Content-Type: application/pkcs7-signature; name="smime.p7s" Content-Disposition: attachment; filename="smime.p7s" Content-Transfer-Encoding: base64 MIAGCSqGSIb3DQEHAqCAMIACAQExCzAJBgUrDgMCGgUAMIAGCSqGSIb3DQEHAQAAoIIUdzCCBGYw ggNOoAMCAQICEFEmCpMc4n+cw6VfeeByroIwDQYJKoZIhvcNAQEFBQAwgZMxCzAJBgNVBAYTAlVT MQswCQYDVQQIEwJVVDEXMBUGA1UEBxMOU2FsdCBMYWtlIENpdHkxHjAcBgNVBAoTFVRoZSBVU0VS VFJVU1QgTmV0d29yazEhMB8GA1UECxMYaHR0cDovL3d3dy51c2VydHJ1c3QuY29tMRswGQYDVQQD ExJVVE4gLSBEQVRBQ29ycCBTR0MwHhcNMDUwNjA3MDgwOTEwWhcNMTkwNjI0MTkwNjMwWjBvMQsw CQYDVQQGEwJTRTEUMBIGA1UEChMLQWRkVHJ1c3QgQUIxJjAkBgNVBAsTHUFkZFRydXN0IEV4dGVy 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