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 X-Spam-Level: X-Spam-Status: No, score=-8.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 95E22C43219 for ; Thu, 2 May 2019 10:50:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5E5C12075E for ; Thu, 2 May 2019 10:50:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726349AbfEBKub (ORCPT ); Thu, 2 May 2019 06:50:31 -0400 Received: from mga05.intel.com ([192.55.52.43]:24027 "EHLO mga05.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726231AbfEBKua (ORCPT ); Thu, 2 May 2019 06:50:30 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga004.fm.intel.com ([10.253.24.48]) by fmsmga105.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 02 May 2019 03:50:30 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.60,421,1549958400"; d="scan'208";a="166965982" Received: from black.fi.intel.com (HELO black.fi.intel.com.) ([10.237.72.28]) by fmsmga004.fm.intel.com with ESMTP; 02 May 2019 03:50:28 -0700 From: Alexander Shishkin To: Peter Zijlstra Cc: Arnaldo Carvalho de Melo , Ingo Molnar , linux-kernel@vger.kernel.org, jolsa@redhat.com, adrian.hunter@intel.com, Alexander Shishkin Subject: [PATCH 0/2] perf, intel: Add support for PEBS output to Intel PT Date: Thu, 2 May 2019 13:50:20 +0300 Message-Id: <20190502105022.15534-1-alexander.shishkin@linux.intel.com> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Peter, New PEBS feature: output to Intel PT stream instead of the DS area. It's theoretically useful in virtualized environments, where DS area can't be used. It's also good for those who are interested in instruction trace for context of the PEBS events. As PEBS goes, it can provide LBR context with all the branch-related information that PT doesn't provide at the moment. PEBS records are packetized in the PT stream, so instead of extracting them in the PMI, we leave it to the perf tool, because real time PT decoding is not practical. Tooling patches are not included, but can be found here [1]. Added is an attribute bit 'aux_source' to mean that an event is a source of AUX data. This bit enables PEBS output to PT. [1] http://git.infradead.org/users/ahunter/linux-perf.git Alexander Shishkin (2): perf: Allow normal events to be sources of AUX data perf/x86/intel: Support PEBS output to PT arch/x86/events/intel/core.c | 13 +++++++ arch/x86/events/intel/ds.c | 59 +++++++++++++++++++++++++++++++- arch/x86/events/perf_event.h | 9 +++++ arch/x86/include/asm/msr-index.h | 3 ++ include/uapi/linux/perf_event.h | 3 +- kernel/events/core.c | 9 +++++ 6 files changed, 94 insertions(+), 2 deletions(-) -- 2.20.1