From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:47892 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751917AbdHCV5W (ORCPT ); Thu, 3 Aug 2017 17:57:22 -0400 Subject: Patch "perf intel-pt: Use FUP always when scanning for an IP" has been added to the 4.4-stable tree To: adrian.hunter@intel.com, acme@redhat.com, ak@linux.intel.com, gregkh@linuxfoundation.org Cc: , From: Date: Thu, 03 Aug 2017 14:56:43 -0700 Message-ID: <15017974039820@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: This is a note to let you know that I've just added the patch titled perf intel-pt: Use FUP always when scanning for an IP to the 4.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: perf-intel-pt-use-fup-always-when-scanning-for-an-ip.patch and it can be found in the queue-4.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From 622b7a47b843c78626f40c1d1aeef8483383fba2 Mon Sep 17 00:00:00 2001 From: Adrian Hunter Date: Fri, 26 May 2017 11:17:08 +0300 Subject: perf intel-pt: Use FUP always when scanning for an IP From: Adrian Hunter commit 622b7a47b843c78626f40c1d1aeef8483383fba2 upstream. The decoder will try to use branch packets to find an IP to start decoding or to recover from errors. Currently the FUP packet is used only in the case of an overflow, however there is no reason for that to be a special case. So just use FUP always when scanning for an IP. Signed-off-by: Adrian Hunter Cc: Andi Kleen Link: http://lkml.kernel.org/r/1495786658-18063-8-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo Signed-off-by: Greg Kroah-Hartman --- tools/perf/util/intel-pt-decoder/intel-pt-decoder.c | 12 ++++-------- 1 file changed, 4 insertions(+), 8 deletions(-) --- a/tools/perf/util/intel-pt-decoder/intel-pt-decoder.c +++ b/tools/perf/util/intel-pt-decoder/intel-pt-decoder.c @@ -1848,14 +1848,10 @@ static int intel_pt_walk_to_ip(struct in break; case INTEL_PT_FUP: - if (decoder->overflow) { - if (intel_pt_have_ip(decoder)) - intel_pt_set_ip(decoder); - if (decoder->ip) - return 0; - } - if (decoder->packet.count && decoder->have_last_ip) - intel_pt_set_last_ip(decoder); + if (intel_pt_have_ip(decoder)) + intel_pt_set_ip(decoder); + if (decoder->ip) + return 0; break; case INTEL_PT_MTC: Patches currently in stable-queue which might be from adrian.hunter@intel.com are queue-4.4/perf-intel-pt-ensure-never-to-set-last_ip-when-packet-count-is-zero.patch queue-4.4/perf-intel-pt-use-fup-always-when-scanning-for-an-ip.patch queue-4.4/perf-intel-pt-fix-last_ip-usage.patch queue-4.4/perf-intel-pt-fix-ip-compression.patch