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 6A7934A2A41 for ; Thu, 24 Sep 2026 14:58:48 +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=1790261930; cv=none; b=kW7ZZReUDG44wonOH89ADAG5wh20PQw/b6PAGODC9jfwhBI0WNubvXTk+BOtG7FPuRpJaTxrf1Hp+aHujRYHaRDcuKESldLVL751ZvwxE0yBGnnzfe4V9V4i/Uprky280NZC93x7R+Da/2iJitiz+ga/YGKi5JCtJ1Z4m39fLoU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790261930; c=relaxed/simple; bh=sMZVeVn0ZsaC75Ss0oixACQGBD0RScWRyElS7yqU6Fo=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=Y5y7DYs3Da2BN4XLj6cdDEknz/cRel3lq5YL68aEJWpDhICSiR4yhvfMoRgbOOEyoZz7xNxwlOqzY9nDG1wUcdZJ/g40v37AjiN56L7Ylqgu9u3Mo6PJ7BvMfhH6DGktTO0jpr/wPXZIP90+84uYxFZ15M6uhwU92jXaunYHI6E= 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=bGxw2E+C; 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="bGxw2E+C" Received: by mail-wm1-f69.google.com with SMTP id 5b1f17b1804b1-49cf5bd2f12so25406015e9.1 for ; Thu, 24 Sep 2026 07:58:48 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20251104; t=1790261927; x=1790866727; 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=JOlgtvFIgZLsG8Gc5kS/gNU5ZmWQiSJ6dcHFxVQsvJs=; b=bGxw2E+CfGIiKO3zgfZIG16nUukAxIN2Wx21doGPSfuwABoYC5jz4HMoxe8dUCnWN7 vZxxDyHHxnN8PallVtHow9i8mLynUiBndpU7PGlLCYSYjYa4I+Ozq0A17nT8AwyprSPc SSdFBYngRttz8kfTxQ+MwM3SRaopVAqUiei4Z9gbzA3ylwQtkSeSun9uu2GeX4wNLUyp QjJGu+4EOovpCysElPnl/0P/wxJHEeb3EZxLlnIjShmc6R0715nNMRu8AhXieyGbwuJ1 onoqY3uiQH0ikD+1nH2B5HGt1OZ2t8p3gimMt02T5hZegSFONgx9tId+EwzRKxwxCMe2 5Rhg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20260707; t=1790261927; x=1790866727; 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=JOlgtvFIgZLsG8Gc5kS/gNU5ZmWQiSJ6dcHFxVQsvJs=; b=zyrz2rGSjvpSPPayldk/myHocSsvwqwFhIcBznHV+eC71R5uIdn2lArEswRhCMQ8/J q8Fo28KdsZIhLzc5KltBs1neIl+04BeO60i9ssJl9ppFspvBttIvyJZYVo7lfPKb8Omr AnQgkAyMA1g0xiKPKOBETJL79jzGJ+dZc25i/amJZxiXqi2UJCmgjNtAzpRpTsSMHUCf DYH3a43h1Xq5+SHgIumXpE9CnMtavwsvpV8p8SK4betqLHsNzlVFlqtwCXVq08y96rpB M5ToNFvFEeUdaPlis03Wt5gWkohAxqtFE3Fh+xVjmn8TAy8h0tRGhbaupsfyIVQCi8wk ixHg== X-Forwarded-Encrypted: i=1; AKwUvBy35/l62lhCKJ3LvXfe9iXfHGvnrdnhUCZLNudA8bmXRML6yNpe2W7rhzuhI1+IAyy3dafGrC6B9foINYo=@vger.kernel.org X-Gm-Message-State: AFuF++lGrGotnyk/FE6lj4s8Vkcen+xWpCUqpZMb7OImeF3dNJe3AmlM JFlGHNx1Qr60fOzKHdY8naHs0qsZ/NkNZmNae2OoTcbKrdJgSfy41K9I2YqGOV4r/l6HQOg4Vo4 lfMurI/iwriScy12t4lNKVw== X-Received: from wmpb24.prod.google.com ([2002:a05:600c:4a98:b0:49f:e303:ee0c]) (user=vdonnefort job=prod-delivery.src-stubby-dispatcher) by 2002:a05:600c:154f:b0:49c:fa21:1c86 with SMTP id 5b1f17b1804b1-49fe7bbaf51mr38477895e9.27.1790261926538; Thu, 24 Sep 2026 07:58:46 -0700 (PDT) Date: Thu, 24 Sep 2026 15:57:54 +0100 In-Reply-To: <20260924145754.1285146-1-vdonnefort@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20260924145754.1285146-1-vdonnefort@google.com> X-Mailer: git-send-email 2.56.0.rc1.310.g51773c2048-goog Message-ID: <20260924145754.1285146-21-vdonnefort@google.com> Subject: [PATCH v7 20/20] 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 --- .../admin-guide/kernel-parameters.txt | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index 33cd30996e47..613941ea31c9 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -7824,6 +7824,25 @@ 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 -- 2.56.0.rc1.310.g51773c2048-goog