From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-wm1-f71.google.com (mail-wm1-f71.google.com [209.85.128.71]) (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 71D6B47FB03 for ; Wed, 12 Aug 2026 16:14:06 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.71 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786551248; cv=none; b=DTDVTubSJsR3DoAR2bVAGVPEeCScmcylghF2HVZ89Bf4EFhSugEDc96p62QKPpYmNqLQaZANu/zKt+dC3Q1TOxsHktolOY+/T7liuUmDx9ILR14tk6WpeYcCRkhILKNAbhkulJK0mXFgydbnTc3mHIF1VI0JvdT8XUqlalCzH7g= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786551248; c=relaxed/simple; bh=ogKVkojYhIgKo43aQZCA93Ay/iBAXTOBSm+XGGonPWw=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=tyBuz//BgBLxRwwYOcGMGLJxJRGbjhUN+527wqVR33YGdGoBNCcAye+Ak/5J7UuyDLrU2dv3eULg/A09n23irlAWOOhTH1Ur6vBWiI1s9EqqjtbIG+KJK3qsKv2+qj/N+2jDisMQoulTn1PLRgz5RRHJctrUcEO0hcT6dOHvYQ4= 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=l2nYXHPb; arc=none smtp.client-ip=209.85.128.71 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="l2nYXHPb" Received: by mail-wm1-f71.google.com with SMTP id 5b1f17b1804b1-49955a9dbcdso7165285e9.1 for ; Wed, 12 Aug 2026 09:14:06 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20251104; t=1786551245; x=1787156045; 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=QJOSwOXHKUDqnuUug/nFET9BDR+g78Qi6YXpVdn7CdU=; b=l2nYXHPbrJ+Hnwi9udPWT9YBEG27j1YvLL3fuSclkYuUdBsxmnD0avI+Ak8123jtTi mbDKdV3JbiDXRKXFTGNyxBIyyVju9WgYPJo1y3c8NNdYih7fPDmDa4CLj2P5UOnxxVIS zr6xqqIn9W3JMm/F8eCc6Jbd5gPZYI9WRNJsVOkKLkDV2fbKZU6aAJRAbUZksnMzr0+B uQ6c/C+vnwUtp3sCpmnPTFHm4MYdVYeb89uiPUJ+RdaJSVRwm3VxmewpMM+Jq3ucdGPu 5s+D6Ht+S+53gN0qgfj8NkiBm2+tAG7BBoCvJ8Vn0C0shH2UXjAuXer1BXYmeqWrBjQg nVvQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1786551245; x=1787156045; 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=QJOSwOXHKUDqnuUug/nFET9BDR+g78Qi6YXpVdn7CdU=; b=BsSnWG9ZNPuGCtfys0kksb5jaFAG5KV867WLHDo9FkR62YrNg4BzeYKtusEin1I4z+ G28NJLdwKG+ek3Bjd0kOFP9ev/NzuHyj5yBVTdrgi18RqCUVj81QKfHjCXIunH5I/uh3 5seNxbUf6cps9oRgN0vA1pYzNN3rOhGo+ewKzAoO9NmgbVPKxiLZ5T9rDACw8fAocqiQ SM9M8A4AycQfe9hdJlQc/scO3o9t5DXGDXf2T37jtX+YC54XV0pwdFd+KXH3F+Avhk7e vJW30j7xjZWYwQKGP8mG7daIu8kn2s2ibrTBjQp5sd4teK0A3eR3yUeZt7mW2dLiA06W 5Yvw== X-Forwarded-Encrypted: i=1; AHgh+RryrZuikkCXY2t9I7qdGdsCg4WCvQxYxUuvVZ88CRSLS2llMZR0993lRz6NNFZEeJU7oSAdZjunfNQMKefChbCLITw=@vger.kernel.org X-Gm-Message-State: AOJu0YzZxWa43V0O1L2r2R/o25xL0wm8p+zDMnU81/jyN+rwoPz6x33S bBYf0s3n1/GD+wCm/qmJUxbnjVf/aQrAd6M42F21qnd1+4XitP5ei4xrezwx3puaAgyNY3LY114 RKzjAlSNYNM9k+G8xxco+/A== X-Received: from wmap7.prod.google.com ([2002:a7b:cc87:0:b0:495:443b:34da]) (user=vdonnefort job=prod-delivery.src-stubby-dispatcher) by 2002:a05:600c:c490:b0:499:5b04:6920 with SMTP id 5b1f17b1804b1-4997c126712mr80031445e9.16.1786551244500; Wed, 12 Aug 2026 09:14:04 -0700 (PDT) Date: Wed, 12 Aug 2026 17:13:40 +0100 In-Reply-To: <20260812161340.2417322-1-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: <20260812161340.2417322-1-vdonnefort@google.com> X-Mailer: git-send-email 2.55.0.691.gc56d675ccc-goog Message-ID: <20260812161340.2417322-19-vdonnefort@google.com> Subject: [PATCH v5 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 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 3d35270dddef..c8470050b285 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 -- 2.55.0.691.gc56d675ccc-goog