Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751827AbbLJSvx (ORCPT ); Thu, 10 Dec 2015 13:51:53 -0500 Received: from mga01.intel.com ([192.55.52.88]:54844 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751160AbbLJSvZ (ORCPT ); Thu, 10 Dec 2015 13:51:25 -0500 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.20,409,1444719600"; d="scan'208";a="11096375" From: Tom Zanussi To: rostedt@goodmis.org Cc: 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 v13 05/29] tracing: Add a per-event-trigger 'paused' field Date: Thu, 10 Dec 2015 12:50:47 -0600 Message-Id: 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 Content-Length: 1871 Lines: 55 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 Tested-by: Masami Hiramatsu Reviewed-by: Namhyung Kim --- 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 5d5fede..5e23a97 100644 --- a/kernel/trace/trace.h +++ b/kernel/trace/trace.h @@ -1173,6 +1173,7 @@ 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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/