From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-wm1-f72.google.com (mail-wm1-f72.google.com [209.85.128.72]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 323424DB57E for ; Tue, 21 Jul 2026 10:36:42 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.72 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784630203; cv=none; b=X4Y8R9CeB8cQZYnk/LGpJ+I0T0QoPyIiRRQ8TwA4xbjVE83zVJ0Cr1Hgg9jTzv7LHOBxsNH8TgPrkHLixkcen7/JLZ/EpBamCPCYiyn7gyYGfv/X+ztab7+o9SfBq1JWwRwVHnG/+AcW22eRwnaMmHObHM0i9VTO9aXe4GBv6zc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784630203; c=relaxed/simple; bh=eA6Qy+sdcdbt1yqsJmW3GqccU8sgZV8IhdCmsKPtqyg=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=L8K7J7WrJoVEqlHF0nB31WQlbiBYSwD1GyL9W65wuOPkRrUNUnt+67Q2rtZ+5wBoSRA1fHlXQKr5hNmDlg/ypL8NHLJ1hrxdIAbGhi2ZsugBoaanP1P6iLZRYONU9JnfzyDeFx73NlQOQPh/l5GykrprD782cBBqRqYD0ox+yzQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--vdonnefort.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=Rwp97XSw; arc=none smtp.client-ip=209.85.128.72 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--vdonnefort.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="Rwp97XSw" Received: by mail-wm1-f72.google.com with SMTP id 5b1f17b1804b1-4955ce558d8so22180325e9.3 for ; Tue, 21 Jul 2026 03:36:42 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20251104; t=1784630200; x=1785235000; darn=vger.kernel.org; h=content-type:cc:to:from:subject:message-id:references:mime-version :in-reply-to:date:from:to:cc:subject:date:message-id:reply-to :content-type; bh=FamuukPByn0t1SdhoLjs7EATo/wwbRBUgdZJ9f7MnOM=; b=Rwp97XSwY4AISfe4MGaaqhNQxJxDsxQw5MztRxiBhKab0muBWs3bfTUbtg4rQ7Kwb/ cCFkCAd14bX/WyKqICOGjqA25FiUwtNWTe+/a2KAro67Ou63Z7f5+iyzt4HGC39v28iZ KcdBMoNDptZ+XAFmFr0x0rrHIm4aVMHQ5JXhLlN6vgnaZYAzZTcJ8Unm62HO8to2rtTM eXIijF///rlWSrI3xGF60XxudcFDraGaj097h8d0He9EnOPIyGxzf8IOoq3dWCHwyqok r+vMV/TkUV2fLFZ6wq4GGRZbrlKjagYJi7CHB1xdtoUDHYlXNiirNu2zSuDpYXQUdQq7 dBUA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1784630200; x=1785235000; h=content-type:cc:to:from:subject:message-id:references:mime-version :in-reply-to:date:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to:content-type; bh=FamuukPByn0t1SdhoLjs7EATo/wwbRBUgdZJ9f7MnOM=; b=YIekmng8XsxvcVoZh+t3LwzCOefv7GiBMgAEE3aJ5MQxfnBbRjPSDGFHETJzLk+Yj5 z8QgnMCKHiu6uMgbsKdj4rc8UGLDpXLiH1WtvlDjxD+xTXFgYvoQFTOElBqt8RBA9yOw dklAMVo4SuB24mrbApy4iovCJwN1aIyGHlzaEF8HGrbeCbCUOdNSmwugCWfl9bk9F8JY ks2RvA+yrm59T3VDmL5Ed063RqpImt7BTcYrjXxA9DFn2xkdGnUNQfR5BEfDgcU5w6qb di1MIYnwu7UZUIAAq0XOG4TGArIRC0LefrUkwh0hXG3gBJeDElZ5en4KeJDIy1LCiv2Q bdtQ== X-Forwarded-Encrypted: i=1; AHgh+Rrq4gcN8pa48XXp81I2Wgz10jAN/8IibsKuLQsv1bPMOwbtTxZAHku77wf1C/wX/ePVxLyV0f7DpVjqbvYRSzLF9pE=@vger.kernel.org X-Gm-Message-State: AOJu0YwuDahcPn5zrxDfzlkl5qAyJEX4Lj5q5kt2gAy0vrss/dAvf69q Vkf4nHpCJDNQMO6AAOZtgsTdlekf+2bBMr8bbUpE+PC7CmeMKvhwvLUQ3jNB1Gljkv7Injnn2bh H+/5FSI3ZWWlUexyv8I5NBw== X-Received: from wmbf14.prod.google.com ([2002:a05:600c:594e:b0:495:4837:275e]) (user=vdonnefort job=prod-delivery.src-stubby-dispatcher) by 2002:a05:600c:a42:b0:493:eed4:7210 with SMTP id 5b1f17b1804b1-4954a3ef700mr203825625e9.11.1784630200166; Tue, 21 Jul 2026 03:36:40 -0700 (PDT) Date: Tue, 21 Jul 2026 11:36:03 +0100 In-Reply-To: <20260721103603.342266-1-vdonnefort@google.com> Precedence: bulk X-Mailing-List: linux-trace-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20260721103603.342266-1-vdonnefort@google.com> X-Mailer: git-send-email 2.55.0.229.g6434b31f56-goog Message-ID: <20260721103603.342266-19-vdonnefort@google.com> Subject: [PATCH v3 18/18] Documentation/kernel-parameters: Add trace_remote From: Vincent Donnefort To: rostedt@goodmis.org, mhiramat@kernel.org, linux-trace-kernel@vger.kernel.org Cc: mathieu.desnoyers@efficios.com, kernel-team@android.com, linux-kernel@vger.kernel.org, Vincent Donnefort Content-Type: text/plain; charset="UTF-8" The trace_remote parameter allows configuring e a trace remote on registration. The syntax is similar to trace_instance. Signed-off-by: Vincent Donnefort diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index b5493a7f8f22..3c1cf3025925 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -7787,6 +7787,25 @@ Kernel parameters See also Documentation/trace/ftrace.rst "trace options" section. + trace_remote=[remote-info] + [FTRACE] Configure a trace remote instance at boot. + Format: [^option1[^option2...]][,event1[,event2...]] + + Supported options: + + dump_on_panic - Enable dumping the trace buffer on + panic. + dmesg - Redirect tracing output to dmesg. + buf_size= - Set the trace buffer size (e.g. 2M). + poll= - Set the trace remote polling interval + in milliseconds. + + Events are a comma-separated list of events to enable. + If events are specified, tracing is automatically enabled. + + Multiple remotes can be configured by specifying this + parameter multiple times. + trace_trigger=[trigger-list] [FTRACE] Add an event trigger on specific events. Set a trigger on top of a specific event, with an optional -- 2.55.0.229.g6434b31f56-goog