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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 59916C7EE23 for ; Mon, 8 May 2023 11:28:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235877AbjEHL2o (ORCPT ); Mon, 8 May 2023 07:28:44 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45140 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235866AbjEHL2Z (ORCPT ); Mon, 8 May 2023 07:28:25 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 31E002E06A for ; Mon, 8 May 2023 04:28:07 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 11FE361118 for ; Mon, 8 May 2023 11:28:07 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 22D3BC433D2; Mon, 8 May 2023 11:28:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1683545286; bh=UEz0h3yOFYBbqlGA/Sp6Ce54htzfm8kA5QfvhS62AKI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=SAhDPPdk2B5AVb2JhDDH73KbbmnVzDhQTEzMr6dBgeJjP5wbvPtfIST01DaozhZEA S7yIZBZbJT6Bc8QYxm0CwC9zMaCx5ejySKXImP+J4K3vgnGPEEyV6/SUMZ9FVwcAo/ 4hMUI/G5fSMk/U3V5bnvC+0fpqFRZX8o0ZJYPSLw= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Adrian Hunter , Ian Rogers , Jiri Olsa , Namhyung Kim , Arnaldo Carvalho de Melo Subject: [PATCH 6.3 686/694] perf intel-pt: Fix CYC timestamps after standalone CBR Date: Mon, 8 May 2023 11:48:41 +0200 Message-Id: <20230508094458.629981937@linuxfoundation.org> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230508094432.603705160@linuxfoundation.org> References: <20230508094432.603705160@linuxfoundation.org> User-Agent: quilt/0.67 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Adrian Hunter commit 430635a0ef1ce958b7b4311f172694ece2c692b8 upstream. After a standalone CBR (not associated with TSC), update the cycles reference timestamp and reset the cycle count, so that CYC timestamps are calculated relative to that point with the new frequency. Fixes: cc33618619cefc6d ("perf tools: Add Intel PT support for decoding CYC packets") Signed-off-by: Adrian Hunter Cc: Adrian Hunter Cc: Ian Rogers Cc: Jiri Olsa Cc: Namhyung Kim Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20230403154831.8651-2-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 | 2 ++ 1 file changed, 2 insertions(+) --- a/tools/perf/util/intel-pt-decoder/intel-pt-decoder.c +++ b/tools/perf/util/intel-pt-decoder/intel-pt-decoder.c @@ -1998,6 +1998,8 @@ static void intel_pt_calc_cbr(struct int decoder->cbr = cbr; decoder->cbr_cyc_to_tsc = decoder->max_non_turbo_ratio_fp / cbr; + decoder->cyc_ref_timestamp = decoder->timestamp; + decoder->cycle_cnt = 0; intel_pt_mtc_cyc_cnt_cbr(decoder); }