From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id DCE7EC433EF for ; Mon, 28 Feb 2022 17:34:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238126AbiB1RfQ (ORCPT ); Mon, 28 Feb 2022 12:35:16 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42792 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238417AbiB1Rd1 (ORCPT ); Mon, 28 Feb 2022 12:33:27 -0500 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A861F90CC0; Mon, 28 Feb 2022 09:29:59 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 443CAB815A6; Mon, 28 Feb 2022 17:29:58 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id A5AFEC340E7; Mon, 28 Feb 2022 17:29:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1646069397; bh=QtyKLtqRjO/p5QtiAOZrz/MaQa+rH2l73DxxsNGGopg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=atCvVzVkXQcCK/plNWGwDxfQ4hARpcuK3QqhM8SvhH3B4e9tntN3bT8Ar2kE+hd+a pVW8cE5IcQfPWWKWaZ/2grIKJz5eByy4LL723xx7KUwd1wGvApAFAyl7pVNXgLS6Vy eOcEInCQQ9MBYrY8f7Nx67FpgunaDE/eCNQfQrrY= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Daniel Bristot de Oliveira , Tom Zanussi , "Steven Rostedt (Google)" Subject: [PATCH 4.19 21/34] tracing: Have traceon and traceoff trigger honor the instance Date: Mon, 28 Feb 2022 18:24:27 +0100 Message-Id: <20220228172210.177533706@linuxfoundation.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220228172207.090703467@linuxfoundation.org> References: <20220228172207.090703467@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Steven Rostedt (Google) commit 302e9edd54985f584cfc180098f3554774126969 upstream. If a trigger is set on an event to disable or enable tracing within an instance, then tracing should be disabled or enabled in the instance and not at the top level, which is confusing to users. Link: https://lkml.kernel.org/r/20220223223837.14f94ec3@rorschach.local.home Cc: stable@vger.kernel.org Fixes: ae63b31e4d0e2 ("tracing: Separate out trace events from global variables") Tested-by: Daniel Bristot de Oliveira Reviewed-by: Tom Zanussi Signed-off-by: Steven Rostedt (Google) Signed-off-by: Greg Kroah-Hartman --- kernel/trace/trace_events_trigger.c | 52 +++++++++++++++++++++++++++++++----- 1 file changed, 46 insertions(+), 6 deletions(-) --- a/kernel/trace/trace_events_trigger.c +++ b/kernel/trace/trace_events_trigger.c @@ -933,6 +933,16 @@ static void traceon_trigger(struct event_trigger_data *data, void *rec, struct ring_buffer_event *event) { + struct trace_event_file *file = data->private_data; + + if (file) { + if (tracer_tracing_is_on(file->tr)) + return; + + tracer_tracing_on(file->tr); + return; + } + if (tracing_is_on()) return; @@ -943,8 +953,15 @@ static void traceon_count_trigger(struct event_trigger_data *data, void *rec, struct ring_buffer_event *event) { - if (tracing_is_on()) - return; + struct trace_event_file *file = data->private_data; + + if (file) { + if (tracer_tracing_is_on(file->tr)) + return; + } else { + if (tracing_is_on()) + return; + } if (!data->count) return; @@ -952,13 +969,26 @@ traceon_count_trigger(struct event_trigg if (data->count != -1) (data->count)--; - tracing_on(); + if (file) + tracer_tracing_on(file->tr); + else + tracing_on(); } static void traceoff_trigger(struct event_trigger_data *data, void *rec, struct ring_buffer_event *event) { + struct trace_event_file *file = data->private_data; + + if (file) { + if (!tracer_tracing_is_on(file->tr)) + return; + + tracer_tracing_off(file->tr); + return; + } + if (!tracing_is_on()) return; @@ -969,8 +999,15 @@ static void traceoff_count_trigger(struct event_trigger_data *data, void *rec, struct ring_buffer_event *event) { - if (!tracing_is_on()) - return; + struct trace_event_file *file = data->private_data; + + if (file) { + if (!tracer_tracing_is_on(file->tr)) + return; + } else { + if (!tracing_is_on()) + return; + } if (!data->count) return; @@ -978,7 +1015,10 @@ traceoff_count_trigger(struct event_trig if (data->count != -1) (data->count)--; - tracing_off(); + if (file) + tracer_tracing_off(file->tr); + else + tracing_off(); } static int