From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756058AbbE2Ng2 (ORCPT ); Fri, 29 May 2015 09:36:28 -0400 Received: from mga03.intel.com ([134.134.136.65]:11842 "EHLO mga03.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754870AbbE2NgH (ORCPT ); Fri, 29 May 2015 09:36:07 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.13,517,1427785200"; d="scan'208";a="717534307" From: Adrian Hunter To: Arnaldo Carvalho de Melo Cc: Ingo Molnar , linux-kernel@vger.kernel.org, Jiri Olsa Subject: [PATCH V6 01/17] perf db-export: Fix thread ref-counting Date: Fri, 29 May 2015 16:33:29 +0300 Message-Id: <1432906425-9911-2-git-send-email-adrian.hunter@intel.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1432906425-9911-1-git-send-email-adrian.hunter@intel.com> References: <1432906425-9911-1-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 Thread ref-counting was not done for get_main_thread() meaning that there was a thread__get() from machine__find_thread() that was not being paired with thread__put(). Fix that. Signed-off-by: Adrian Hunter --- tools/perf/util/db-export.c | 19 ++++++++++--------- 1 file changed, 10 insertions(+), 9 deletions(-) diff --git a/tools/perf/util/db-export.c b/tools/perf/util/db-export.c index eb7a2ac..1c9689e 100644 --- a/tools/perf/util/db-export.c +++ b/tools/perf/util/db-export.c @@ -234,7 +234,7 @@ int db_export__symbol(struct db_export *dbe, struct symbol *sym, static struct thread *get_main_thread(struct machine *machine, struct thread *thread) { if (thread->pid_ == thread->tid) - return thread; + return thread__get(thread); if (thread->pid_ == -1) return NULL; @@ -308,19 +308,18 @@ int db_export__sample(struct db_export *dbe, union perf_event *event, if (err) return err; - /* FIXME: check refcounting for get_main_thread, that calls machine__find_thread... */ main_thread = get_main_thread(al->machine, thread); if (main_thread) comm = machine__thread_exec_comm(al->machine, main_thread); err = db_export__thread(dbe, thread, al->machine, comm); if (err) - return err; + goto out_put; if (comm) { err = db_export__comm(dbe, comm, main_thread); if (err) - return err; + goto out_put; es.comm_db_id = comm->db_id; } @@ -328,7 +327,7 @@ int db_export__sample(struct db_export *dbe, union perf_event *event, err = db_ids_from_al(dbe, al, &es.dso_db_id, &es.sym_db_id, &es.offset); if (err) - return err; + goto out_put; if ((evsel->attr.sample_type & PERF_SAMPLE_ADDR) && sample_addr_correlates_sym(&evsel->attr)) { @@ -338,20 +337,22 @@ int db_export__sample(struct db_export *dbe, union perf_event *event, err = db_ids_from_al(dbe, &addr_al, &es.addr_dso_db_id, &es.addr_sym_db_id, &es.addr_offset); if (err) - return err; + goto out_put; if (dbe->crp) { err = thread_stack__process(thread, comm, sample, al, &addr_al, es.db_id, dbe->crp); if (err) - return err; + goto out_put; } } if (dbe->export_sample) - return dbe->export_sample(dbe, &es); + err = dbe->export_sample(dbe, &es); - return 0; +out_put: + thread__put(main_thread); + return err; } static struct { -- 1.9.1