From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752228AbbD3OmE (ORCPT ); Thu, 30 Apr 2015 10:42:04 -0400 Received: from mga11.intel.com ([192.55.52.93]:52334 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752116AbbD3Ok7 (ORCPT ); Thu, 30 Apr 2015 10:40:59 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.11,677,1422950400"; d="scan'208";a="718478383" From: Adrian Hunter To: Arnaldo Carvalho de Melo Cc: Peter Zijlstra , linux-kernel@vger.kernel.org, David Ahern , Frederic Weisbecker , Jiri Olsa , Namhyung Kim , Stephane Eranian Subject: [PATCH V4 21/24] perf tools: Intel PT to always update thread stack trace number Date: Thu, 30 Apr 2015 17:37:44 +0300 Message-Id: <1430404667-10593-22-git-send-email-adrian.hunter@intel.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1430404667-10593-1-git-send-email-adrian.hunter@intel.com> References: <1430404667-10593-1-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 The enhanced thread stack is used by higher layers but still requires the trace number. The trace number is used to distinguish discontinuous sections of trace (for example from Snapshot mode or Sample mode), which cause the thread stack to be flushed. Signed-off-by: Adrian Hunter --- tools/perf/util/intel-pt.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/tools/perf/util/intel-pt.c b/tools/perf/util/intel-pt.c index eebdb27..1b6c0e9 100644 --- a/tools/perf/util/intel-pt.c +++ b/tools/perf/util/intel-pt.c @@ -265,7 +265,7 @@ static int intel_pt_get_trace(struct intel_pt_buffer *b, void *data) if (!old_buffer || ptq->pt->sampling_mode || (ptq->pt->snapshot_mode && !buffer->consecutive)) { b->consecutive = false; - b->trace_nr = buffer->buffer_nr; + b->trace_nr = buffer->buffer_nr + 1; } else { b->consecutive = true; } @@ -1065,6 +1065,8 @@ static int intel_pt_sample(struct intel_pt_queue *ptq) thread_stack__event(ptq->thread, ptq->flags, state->from_ip, state->to_ip, ptq->insn_len, state->trace_nr); + else + thread_stack__set_trace_nr(ptq->thread, state->trace_nr); if (pt->sample_branches) { err = intel_pt_synth_branch_sample(ptq); -- 1.9.1