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=-11.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_CR_TRAILER,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS 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 1FD82C4361B for ; Mon, 14 Dec 2020 13:23:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C1F2A20791 for ; Mon, 14 Dec 2020 13:23:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2407931AbgLNNW6 (ORCPT ); Mon, 14 Dec 2020 08:22:58 -0500 Received: from mail.kernel.org ([198.145.29.99]:60114 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731403AbgLNNWk (ORCPT ); Mon, 14 Dec 2020 08:22:40 -0500 Date: Mon, 14 Dec 2020 10:22:11 -0300 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1607952119; bh=B/i6SPmblhJxjLg/M1+qmbgXzT3E80LDBqGFPGf3Q7g=; h=From:To:Cc:Subject:References:In-Reply-To:From; b=FmrWDkUdEQjnMhM5DM096GJzURDJzrjB3kFQeUpQK1nBtR/OeclHHYNKVnNLcTMlq WKi1riIfNwu+M9SE86rZHHiwB7n6PTBTVSr3QzSF78y8Tuqv7ErW1AI7UQ6pWmKOUO MrPwFAguUjY+MYkDivotiK0U4M56HVNWIJ3DLiytNZKtLBs+ArM+hlUltpfGxOrhU6 CaPdXs96lUrr4iu+p/KNCTGg08bp+QzbmBF0lvIdtL0f+goWIpaPtSSPKwJvMhATgi G8SKA297JTEUqyNDSUB50QdzWwGGNUlSO/C3kCeg5Jhd6fJSOCu/acVFlo3HAWAkEq Tqq/VQ6cuEfyg== From: Arnaldo Carvalho de Melo To: Jiri Olsa Cc: Namhyung Kim , Ingo Molnar , Peter Zijlstra , Mark Rutland , Alexander Shishkin , LKML , Stephane Eranian , Ian Rogers Subject: Re: [PATCH 1/2] perf report: Support --header-only for pipe mode Message-ID: <20201214132211.GC238399@kernel.org> References: <20201210061302.88213-1-namhyung@kernel.org> <20201213230019.GB502638@krava> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20201213230019.GB502638@krava> X-Url: http://acmel.wordpress.com Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Em Mon, Dec 14, 2020 at 12:00:19AM +0100, Jiri Olsa escreveu: > On Thu, Dec 10, 2020 at 03:13:01PM +0900, Namhyung Kim wrote: > > The --header-only checks file header and prints the feature data. But > > as pipe mode doesn't have it in the header it prints almost nothing. > > Change it to process first few records until it founds HEADER_FEATURE. > > > > Before: > > $ perf record -o- true | perf report -i- --header-only > > # ======== > > # captured on : Thu Dec 10 14:34:59 2020 > > # header version : 1 > > # data offset : 0 > > # data size : 0 > > # feat offset : 0 > > # ======== > > # > > > > After: > > $ perf record -o- true | perf report -i- --header-only > > # ======== > > # captured on : Thu Dec 10 14:49:11 2020 > > # header version : 1 > > # data offset : 0 > > # data size : 0 > > # feat offset : 0 > > # ======== > > # > > # hostname : balhae > > # os release : 5.7.17-1xxx > > # perf version : 5.10.rc6.gdb0ea13cc741 > > # arch : x86_64 > > # nrcpus online : 8 > > # nrcpus avail : 8 > > # cpudesc : Intel(R) Core(TM) i7-8665U CPU @ 1.90GHz > > # cpuid : GenuineIntel,6,142,12 > > # total memory : 16158916 kB > > # cmdline : perf record -o- true > > # event : name = cycles, , id = { 81, 82, 83, 84, 85, 86, 87, 88 }, size = 120, ... > > # CPU_TOPOLOGY info available, use -I to display > > # NUMA_TOPOLOGY info available, use -I to display > > # pmu mappings: intel_pt = 9, intel_bts = 8, software = 1, power = 20, uprobe = 7, ... > > # time of first sample : 0.000000 > > # time of last sample : 0.000000 > > # sample duration : 0.000 ms > > # MEM_TOPOLOGY info available, use -I to display > > # cpu pmu capabilities: branches=32, max_precise=3, pmu_name=skylake > > > > Signed-off-by: Namhyung Kim > > Acked-by: Jiri Olsa Thanks, applied. - Arnaldo