From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757220AbbEVL53 (ORCPT ); Fri, 22 May 2015 07:57:29 -0400 Received: from mga03.intel.com ([134.134.136.65]:18730 "EHLO mga03.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757016AbbEVL5P (ORCPT ); Fri, 22 May 2015 07:57:15 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.13,474,1427785200"; d="scan'208";a="733695168" From: Adrian Hunter To: Arnaldo Carvalho de Melo Cc: linux-kernel@vger.kernel.org, Jiri Olsa Subject: [PATCH V5 13/16] perf tools: Intel PT to always update thread stack trace number Date: Fri, 22 May 2015 14:54:10 +0300 Message-Id: <1432295653-13989-14-git-send-email-adrian.hunter@intel.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1432295653-13989-1-git-send-email-adrian.hunter@intel.com> References: <1432295653-13989-1-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 9c25bfa..5a59fd8 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; } @@ -1075,6 +1075,8 @@ 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