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=-11.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 AEE3DC11F6A for ; Thu, 1 Jul 2021 13:17:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9137F6140D for ; Thu, 1 Jul 2021 13:17:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236720AbhGANTs (ORCPT ); Thu, 1 Jul 2021 09:19:48 -0400 Received: from mga14.intel.com ([192.55.52.115]:9054 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236657AbhGANTs (ORCPT ); Thu, 1 Jul 2021 09:19:48 -0400 X-IronPort-AV: E=McAfee;i="6200,9189,10031"; a="208350647" X-IronPort-AV: E=Sophos;i="5.83,314,1616482800"; d="scan'208";a="208350647" Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by fmsmga103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 01 Jul 2021 06:17:17 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.83,314,1616482800"; d="scan'208";a="493506024" Received: from ahunter-desktop.fi.intel.com ([10.237.72.79]) by fmsmga002.fm.intel.com with ESMTP; 01 Jul 2021 06:17:14 -0700 From: Adrian Hunter To: Peter Zijlstra Cc: Ingo Molnar , Arnaldo Carvalho de Melo , Mark Rutland , Alexander Shishkin , Jiri Olsa , Leo Yan , Kan Liang , x86@kernel.org, linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH V2 0/3] perf intel-pt: Add PEBS-via-PT side-band Date: Thu, 1 Jul 2021 16:17:29 +0300 Message-Id: <20210701131732.31602-1-adrian.hunter@intel.com> X-Mailer: git-send-email 2.17.1 Organization: Intel Finland Oy, Registered Address: PL 281, 00181 Helsinki, Business Identity Code: 0357606 - 4, Domiciled in Helsinki Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi PEBS output to Intel Processor Trace was introduced with Atom processors based on Tremont. Currently there is software support only for a single PEBS-via-PT event. Here is support for multiple PEBS-via-PT events. The first patch is the kernel change which adds a new event, namely PERF_RECORD_AUX_OUTPUT_HW_ID which contains the counter index. That is output when the PEBS-via-PT event is enabled in hardware. There is an optimization, to report the index only when it changes for the event. That will work only so long as all PEBS-via-PT events are scheduled together, which they are for a recording session because they are in a single group. Also no attribute bit is used to select the new event, so a new kernel is not compatible with older perf tools. The assumption being that PEBS-via-PT is sufficiently esoteric that users will not be troubled by this. The second patch adds the usual boiler plate to perf tools for a new event. The third patch adds support for processing the new event by perf tool's Intel PT decoder. Changes in V2: perf/x86: Add new event for AUX output counter index Use callback from x86_assign_hw_event Adrian Hunter (3): perf/x86: Add new event for AUX output counter index perf tools: Add support for PERF_RECORD_AUX_OUTPUT_HW_ID perf intel-pt: Add support for PERF_RECORD_AUX_OUTPUT_HW_ID arch/x86/events/core.c | 6 +++ arch/x86/events/intel/core.c | 7 +++ arch/x86/events/perf_event.h | 1 + include/linux/perf_event.h | 1 + include/uapi/linux/perf_event.h | 15 ++++++ kernel/events/core.c | 30 +++++++++++ tools/include/uapi/linux/perf_event.h | 15 ++++++ tools/lib/perf/include/perf/event.h | 6 +++ tools/perf/Documentation/perf-intel-pt.txt | 7 ++- tools/perf/builtin-inject.c | 4 +- tools/perf/builtin-record.c | 2 +- tools/perf/util/event.c | 18 +++++++ tools/perf/util/event.h | 5 ++ tools/perf/util/intel-pt.c | 85 ++++++++++++++++++++++++++++-- tools/perf/util/machine.c | 10 ++++ tools/perf/util/machine.h | 2 + tools/perf/util/session.c | 5 ++ tools/perf/util/tool.h | 1 + 18 files changed, 213 insertions(+), 7 deletions(-) Regards Adrian