Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932085AbbGPRXZ (ORCPT ); Thu, 16 Jul 2015 13:23:25 -0400 Received: from mga09.intel.com ([134.134.136.24]:56263 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755718AbbGPRXW (ORCPT ); Thu, 16 Jul 2015 13:23:22 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.15,488,1432623600"; d="scan'208";a="765798172" 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, linux-kernel@vger.kernel.org, Tom Zanussi Subject: [PATCH v9 06/22] tracing: Add a per-event-trigger 'paused' field Date: Thu, 16 Jul 2015 12:22:39 -0500 Message-Id: <3452a912b2bce7303929ace44882affd6cd5a078.1437066836.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 Content-Length: 1761 Lines: 53 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 6fe5b66..5e675b2 100644 --- a/kernel/trace/trace.h +++ b/kernel/trace/trace.h @@ -1110,6 +1110,7 @@ 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 e30539c..5f632ff 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; @@ -109,6 +111,8 @@ 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/