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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2BA67C433EF for ; Tue, 26 Oct 2021 09:02:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0DC2A60E75 for ; Tue, 26 Oct 2021 09:02:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234654AbhJZJEX (ORCPT ); Tue, 26 Oct 2021 05:04:23 -0400 Received: from mga17.intel.com ([192.55.52.151]:37214 "EHLO mga17.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234628AbhJZJEW (ORCPT ); Tue, 26 Oct 2021 05:04:22 -0400 X-IronPort-AV: E=McAfee;i="6200,9189,10148"; a="210639808" X-IronPort-AV: E=Sophos;i="5.87,182,1631602800"; d="scan'208";a="210639808" Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by fmsmga107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 26 Oct 2021 02:01:58 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.87,182,1631602800"; d="scan'208";a="723991220" Received: from ahunter-desktop.fi.intel.com ([10.237.72.76]) by fmsmga005.fm.intel.com with ESMTP; 26 Oct 2021 02:01:57 -0700 From: Adrian Hunter To: Arnaldo Carvalho de Melo Cc: Jiri Olsa , Andi Kleen , linux-kernel@vger.kernel.org Subject: [PATCH V2 2/6] perf auxtrace: Add itrace A option to approximate IPC Date: Tue, 26 Oct 2021 12:01:48 +0300 Message-Id: <20211026090152.357591-3-adrian.hunter@intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20211026090152.357591-1-adrian.hunter@intel.com> References: <20211026090152.357591-1-adrian.hunter@intel.com> MIME-Version: 1.0 Organization: Intel Finland Oy, Registered Address: PL 281, 00181 Helsinki, Business Identity Code: 0357606 - 4, Domiciled in Helsinki Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add an option to specify that synthesized IPC can be approximate, rather than completely accurate. Signed-off-by: Adrian Hunter --- tools/perf/Documentation/itrace.txt | 1 + tools/perf/util/auxtrace.c | 3 +++ tools/perf/util/auxtrace.h | 3 +++ 3 files changed, 7 insertions(+) diff --git a/tools/perf/Documentation/itrace.txt b/tools/perf/Documentation/itrace.txt index 2d586fe5e4c5..141449e97bed 100644 --- a/tools/perf/Documentation/itrace.txt +++ b/tools/perf/Documentation/itrace.txt @@ -20,6 +20,7 @@ L synthesize last branch entries on existing event records s skip initial number of events q quicker (less detailed) decoding + A approximate IPC Z prefer to ignore timestamps (so-called "timeless" decoding) The default is all events i.e. the same as --itrace=ibxwpe, diff --git a/tools/perf/util/auxtrace.c b/tools/perf/util/auxtrace.c index 8d2865b9ade2..c679394b898d 100644 --- a/tools/perf/util/auxtrace.c +++ b/tools/perf/util/auxtrace.c @@ -1564,6 +1564,9 @@ int itrace_do_parse_synth_opts(struct itrace_synth_opts *synth_opts, case 'q': synth_opts->quick += 1; break; + case 'A': + synth_opts->approx_ipc = true; + break; case 'Z': synth_opts->timeless_decoding = true; break; diff --git a/tools/perf/util/auxtrace.h b/tools/perf/util/auxtrace.h index 20dc78d86d54..889f976ea1a0 100644 --- a/tools/perf/util/auxtrace.h +++ b/tools/perf/util/auxtrace.h @@ -84,6 +84,7 @@ enum itrace_period_type { * @thread_stack: feed branches to the thread_stack * @last_branch: add branch context to 'instruction' events * @add_last_branch: add branch context to existing event records + * @approx_ipc: approximate IPC * @flc: whether to synthesize first level cache events * @llc: whether to synthesize last level cache events * @tlb: whether to synthesize TLB events @@ -127,6 +128,7 @@ struct itrace_synth_opts { bool thread_stack; bool last_branch; bool add_last_branch; + bool approx_ipc; bool flc; bool llc; bool tlb; @@ -649,6 +651,7 @@ bool auxtrace__evsel_is_auxtrace(struct perf_session *session, " L[len]: synthesize last branch entries on existing event records\n" \ " sNUMBER: skip initial number of events\n" \ " q: quicker (less detailed) decoding\n" \ +" A: approximate IPC\n" \ " Z: prefer to ignore timestamps (so-called \"timeless\" decoding)\n" \ " PERIOD[ns|us|ms|i|t]: specify period to sample stream\n" \ " concatenate multiple options. Default is ibxwpe or cewp\n" -- 2.25.1