From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-wm1-f69.google.com (mail-wm1-f69.google.com [209.85.128.69]) (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 B03B546EC81 for ; Tue, 4 Aug 2026 14:04:15 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.69 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785852258; cv=none; b=pJHP26mEjOo2jrMZf/RO/p1u6jqgfv/wqIOHLBeWqS6cFXjWhV2rNjV8Tsn5TE6Dv8QEON/WCJ0s/96Gkt4PMAS2OwnYAEaYDvjeI1bCZMzsSrzbnWNg5ayB+UZMZA4AOMtB3mIgOQz77CbUjAWI8JXuJA3hg76Rp71iZgERd6A= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785852258; c=relaxed/simple; bh=OSUij78+fhQKPWeDLYEuTvWN9rHZtcK6B+isPsGkf9o=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=CAse13v+/DjPfRXq/n0aFSqQJRCsL8LLBEkRs3xfGrlsJ+W/QurBfOk6npk5nWbbdU/7+jK5LYjTx+uwhmOYfl/I8WxRraD05u3gPzLAVK8TtzzMT4lZVh6tn2RGpKcdygHqJ53B4okrahPy3hUjHvOBM9Pg/EGSr8dtiCjzu+Y= 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=NHH/1pNN; arc=none smtp.client-ip=209.85.128.69 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="NHH/1pNN" Received: by mail-wm1-f69.google.com with SMTP id 5b1f17b1804b1-496b6f97676so36348435e9.2 for ; Tue, 04 Aug 2026 07:04:15 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20251104; t=1785852254; x=1786457054; 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=tte9ma7wAYPi5bKotGF/KwdVECsBJ/R3KcTZGODT0EQ=; b=NHH/1pNN8vae+obE64UhRk275VGPruWPOKpnwHFe79+Y9FL40IzWmFBbVdT+ukG6Ao f/f99drAWR69iqmA0KjTP88MiVTjKONUsEaE/cynzf/d0Y5gyA8Dd0wRzXWt/wZgeSSX DiZ1A2bge95XNmQU9M5LjzFWblv+gmqm/YC8HuinZ5p20/Mcb9CGP387+87NY5tq4Sef 7FFHHeN2/xpEzXW4VxJ1+Go5scdqojvwjGX8NpFfVLGMzRW3qaXmXqTf2qbNyVLtAq9r wp+e0ygZpb80p9YLawgM8eDe5G4wy4navs46srjrzo+C4xnomeLUoIDwne2HSRsHguK+ GEjw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1785852254; x=1786457054; 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=tte9ma7wAYPi5bKotGF/KwdVECsBJ/R3KcTZGODT0EQ=; b=hPQKncz+bZRSGTZ3uiI3LPhoKMkEKyYN6dwi8BVbc5smKBOaie84PoWhyBHQX3Qa/0 W5ej/dRyfnArR9zHBIfjCGMbpisxebtF1BiM5s5wgSsXfoTcXBnkhuqsLgXjNhmzSyyU p6oYnq12BomWUypgjytwgKIZtYNoB+HQQ93AHZqoMZ4r5ElSuMwL2EJR/Tz1jH+FGh5h BUDxYdDYaWa+ba5iy5Ck6JsIrDXK7H2OljE2VCUbg57e9O0pGHSeI2TaqBS7eh39RQzn deMpJhL0Jw6oR/PTuf+yHXslsHt+TtFbunhCa5V1V2gAz5IIbqKcYDWb2cx7tIhCpBI8 fSmw== X-Forwarded-Encrypted: i=1; AHgh+RruQ/NVxVjKJ2OFTE9AIyysiXCaACEzclUctZpKJ2njltIlIjwYkIm63RGtjtS9qw4V1aTZ/DRgdsCNQ33Xj0y1DFg=@vger.kernel.org X-Gm-Message-State: AOJu0YxYrCY5VBVGrdM+9ZZfRwMQv50WJOcKzooDyK/Qo6L+oJtcH9LR gphmXgazPZH3TpJ4qxIxcQxQSisDiyFsVu2ypM5i3dFjajVlajqhTEmZjjhxUoSwyQhrVwR1jK4 6ChkcUi++jiL1RaWj8/4EdQ== X-Received: from wmqc7.prod.google.com ([2002:a05:600c:a47:b0:495:6902:b647]) (user=vdonnefort job=prod-delivery.src-stubby-dispatcher) by 2002:a05:600c:c170:b0:495:4749:16a7 with SMTP id 5b1f17b1804b1-4980c673ca5mr397484575e9.14.1785852253561; Tue, 04 Aug 2026 07:04:13 -0700 (PDT) Date: Tue, 4 Aug 2026 15:03:33 +0100 In-Reply-To: <20260804140333.797210-1-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: <20260804140333.797210-1-vdonnefort@google.com> X-Mailer: git-send-email 2.55.0.571.g244d577d93-goog Message-ID: <20260804140333.797210-19-vdonnefort@google.com> Subject: [PATCH v4 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 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 -- 2.55.0.571.g244d577d93-goog