From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754490AbeEaKZI (ORCPT ); Thu, 31 May 2018 06:25:08 -0400 Received: from mga18.intel.com ([134.134.136.126]:26155 "EHLO mga18.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754448AbeEaKZG (ORCPT ); Thu, 31 May 2018 06:25:06 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.49,463,1520924400"; d="scan'208";a="52233028" From: Adrian Hunter To: Arnaldo Carvalho de Melo Cc: linux-kernel@vger.kernel.org Subject: [PATCH 3/4] perf intel-pt: Fix MTC timing after overflow Date: Thu, 31 May 2018 13:23:44 +0300 Message-Id: <1527762225-26024-4-git-send-email-adrian.hunter@intel.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1527762225-26024-1-git-send-email-adrian.hunter@intel.com> References: <1527762225-26024-1-git-send-email-adrian.hunter@intel.com> Organization: Intel Finland Oy, Registered Address: PL 281, 00181 Helsinki, Business Identity Code: 0357606 - 4, Domiciled in Helsinki Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On some platforms, overflows will clear before MTC wraparound, and there is no following TSC/TMA packet. In that case the previous TMA is valid. Since there will be a valid TMA either way, stop setting 'have_tma' to false upon overflow. Signed-off-by: Adrian Hunter Cc: stable@vger.kernel.org --- tools/perf/util/intel-pt-decoder/intel-pt-decoder.c | 1 - 1 file changed, 1 deletion(-) diff --git a/tools/perf/util/intel-pt-decoder/intel-pt-decoder.c b/tools/perf/util/intel-pt-decoder/intel-pt-decoder.c index e5eb91777383..881d7c5e5e2a 100644 --- a/tools/perf/util/intel-pt-decoder/intel-pt-decoder.c +++ b/tools/perf/util/intel-pt-decoder/intel-pt-decoder.c @@ -1376,7 +1376,6 @@ static int intel_pt_overflow(struct intel_pt_decoder *decoder) { intel_pt_log("ERROR: Buffer overflow\n"); intel_pt_clear_tx_flags(decoder); - decoder->have_tma = false; decoder->cbr = 0; decoder->timestamp_insn_cnt = 0; decoder->pkt_state = INTEL_PT_STATE_ERR_RESYNC; -- 1.9.1