From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 96532391505 for ; Wed, 15 Jul 2026 15:46:59 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.129.124 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784130424; cv=none; b=R+p9hRZhMnfr7rg2kEr+I00RMPtUhmll/KVRsm/BFPeuy2yykRgMQccFIjejliHwN0RT48pjkblHPy81EHnk5d+xTbaz2Tf2qAoe93HKqKxcsVXYvXgtX4luuPGYJeOyc2yPq9zT/LbpLhJjWaME9/6/wOTgWSucuW36g96HavI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784130424; c=relaxed/simple; bh=6j6oFNDGCW22dPi/OuojAv6AgzWQQtmzdQGiZwBPIS4=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=BINL7T1Are1fL8Zb8Zx5lPwSckl4eY+2r52io22F2cW9dYQifvliBZOvrUDT1nINFnwqraJNv0AOwii8752UmK1wGaIELvlhXRZFcweSHknU7ldRADVzwFkG00XLLtS9ZX/etFLFIwg2Wnx8L/KvLlcjhwXzf8SFno2mGqY3bTY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=LZyrVxLg; arc=none smtp.client-ip=170.10.129.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="LZyrVxLg" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1784130418; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=ZyfMFThYySVUZ/UP9vZ/no6yT92LHdHbfgfkLQhYtrY=; b=LZyrVxLg0BwfJGmGvd5hSfvLfu6Ic40ki3D5ikHFVhIcYON07TrlXWShX02yOdFXA1ylkE 0ykg64D8u3EyBcJwScRAo668f3Q3t5nqg1ncssUNI6v4nWQEW1SxSySJJjVv/LrsYNyR8Z N4nGUkLx1L/rb7JIggJFK7V5EQkVowg= Received: from mx-prod-mc-03.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-371-nrpd4CmENcac4dNV13t-pQ-1; Wed, 15 Jul 2026 11:46:56 -0400 X-MC-Unique: nrpd4CmENcac4dNV13t-pQ-1 X-Mimecast-MFC-AGG-ID: nrpd4CmENcac4dNV13t-pQ_1784130415 Received: from mx-prod-int-08.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-08.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.111]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-03.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 6F6031955F1D; Wed, 15 Jul 2026 15:46:55 +0000 (UTC) Received: from vschneid-thinkpadt14sgen2i.remote.csb (unknown [10.44.32.112]) by mx-prod-int-08.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id BCA251800576; Wed, 15 Jul 2026 15:46:51 +0000 (UTC) From: Valentin Schneider To: linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org Cc: Tomas Glozar , Steven Rostedt , Masami Hiramatsu , Mathieu Desnoyers , Costa Shulyupin , Crystal Wood , John Kacur , Ivan Pravdin , Jonathan Corbet Subject: [PATCH v3 5/6] rtla: Unconditionally clean any pre-existing filters for user-provided events Date: Wed, 15 Jul 2026 17:45:50 +0200 Message-ID: <20260715154553.2020891-6-vschneid@redhat.com> In-Reply-To: <20260715154553.2020891-1-vschneid@redhat.com> References: <20260715154553.2020891-1-vschneid@redhat.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.111 A later commit will apply a filter to events recorded to the trace output. To prevent any user confusion, remove pre-existing filters when enabling an event provided via the '-e' command line argument. Suggested-by: Tomas Glozar Signed-off-by: Valentin Schneider --- tools/tracing/rtla/src/trace.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/tools/tracing/rtla/src/trace.c b/tools/tracing/rtla/src/trace.c index e407447773d04..f67f02cc92cdd 100644 --- a/tools/tracing/rtla/src/trace.c +++ b/tools/tracing/rtla/src/trace.c @@ -473,6 +473,10 @@ static int trace_event_enable_filter(struct trace_instance *instance, char filter[MAX_PATH]; int retval; + /* Unconditionally clean any pre-existing filters */ + tracefs_event_file_write(instance->inst, tevent->system, + tevent->event, "filter", "0"); + if (!tevent->filter) return 0; -- 2.55.0