From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933294AbbI3TKv (ORCPT ); Wed, 30 Sep 2015 15:10:51 -0400 Received: from mga03.intel.com ([134.134.136.65]:39502 "EHLO mga03.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932929AbbI3TKl (ORCPT ); Wed, 30 Sep 2015 15:10:41 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.17,613,1437462000"; d="scan'208";a="816470807" From: Tom Zanussi To: rostedt@goodmis.org Cc: daniel.wagner@bmw-carit.de, masami.hiramatsu.pt@hitachi.com, namhyung@kernel.org, josh@joshtriplett.org, andi@firstfloor.org, mathieu.desnoyers@efficios.com, peterz@infradead.org, linux-kernel@vger.kernel.org, Tom Zanussi Subject: [PATCH v10 06/26] tracing: Add a per-event-trigger 'paused' field Date: Wed, 30 Sep 2015 14:09:52 -0500 Message-Id: <55b87d464abb02d65cbb4289a7dc9851cb55e898.1443637631.git.tom.zanussi@linux.intel.com> X-Mailer: git-send-email 1.9.3 In-Reply-To: References: In-Reply-To: References: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add a simple per-trigger 'paused' flag, allowing individual triggers to pause. We could leave it to individual triggers that need this functionality to do it themselves, but we also want to allow other events to control pausing, so add it to the trigger data. Signed-off-by: Tom Zanussi --- kernel/trace/trace.h | 1 + kernel/trace/trace_events_trigger.c | 4 ++++ 2 files changed, 5 insertions(+) diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h index 783f620..71cf384 100644 --- a/kernel/trace/trace.h +++ b/kernel/trace/trace.h @@ -1111,6 +1111,7 @@ struct event_trigger_data { struct event_filter __rcu *filter; char *filter_str; void *private_data; + bool paused; struct list_head list; }; diff --git a/kernel/trace/trace_events_trigger.c b/kernel/trace/trace_events_trigger.c index c3abef6..8375d29 100644 --- a/kernel/trace/trace_events_trigger.c +++ b/kernel/trace/trace_events_trigger.c @@ -72,6 +72,8 @@ event_triggers_call(struct trace_event_file *file, void *rec) return tt; list_for_each_entry_rcu(data, &file->triggers, list) { + if (data->paused) + continue; if (!rec) { data->ops->func(data, rec); continue; @@ -110,6 +112,8 @@ event_triggers_post_call(struct trace_event_file *file, struct event_trigger_data *data; list_for_each_entry_rcu(data, &file->triggers, list) { + if (data->paused) + continue; if (data->cmd_ops->trigger_type & tt) data->ops->func(data, rec); } -- 1.9.3