From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from relay.hostedemail.com (smtprelay0011.hostedemail.com [216.40.44.11]) (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 1FD91283C9D; Tue, 11 Aug 2026 14:08:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=216.40.44.11 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786457310; cv=none; b=EB4tsiiqKckYe5qHycCJdFOk3Rjl+1zbgTaqAY20d+qEc/4P4jF4RYzwb/f7f98mDZ010J4gRGY/i8mYZ/kEkmB/6WaCWaD5PLtq+FMlxB4aA6+j+y3eiJJSPjMX6CGNaSN0XlGiOxioXKjKRiyweDYWe/vB6cdZe/xYGog22UU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786457310; c=relaxed/simple; bh=yX0gXrmmVPtMOiT9f8nAgFiWeyAdXvpyrPOb9b+fvuk=; h=Date:From:To:Cc:Subject:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=K3Zeol2KL3pc9cKpSv3UZy7SH11KbhfXzIv+0s8najMvFhPk929ssR78B2D44beXiPB0KbPubi/oxhmr3Rb4yW7qKcrsDd6lrcrbra0pjwTUMtFN3HtK10q8ev/uD5YbeJe80mBhdGIIQngB09HaYXhO4SGZ3jOiWGSkWjw+u0w= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=goodmis.org; spf=pass smtp.mailfrom=goodmis.org; arc=none smtp.client-ip=216.40.44.11 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=goodmis.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=goodmis.org Received: from omf08.hostedemail.com (lb01a-stub [10.200.18.249]) by unirelay02.hostedemail.com (Postfix) with ESMTP id A81D7120478; Tue, 11 Aug 2026 14:08:21 +0000 (UTC) Received: from [HIDDEN] (Authenticated sender: rostedt@goodmis.org) by omf08.hostedemail.com (Postfix) with ESMTPA id 5ADB720026; Tue, 11 Aug 2026 14:08:19 +0000 (UTC) Date: Tue, 11 Aug 2026 10:08:30 -0400 From: Steven Rostedt To: Xiang Gao Cc: Masami Hiramatsu , Mathieu Desnoyers , Lorenzo Stoakes , gao xu , yinchuang1@xiaomi.com, linux-trace-kernel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, Xiang Gao Subject: Re: [RFC] tracing: aggregate ring-buffer usage statistics Message-ID: <20260811100830.7976bbe8@gandalf.local.home> In-Reply-To: <20260811114818.1449933-1-gaoxiang17@xiaomi.com> References: <20260811114818.1449933-1-gaoxiang17@xiaomi.com> X-Mailer: Claws Mail 3.20.0git84 (GTK+ 2.24.33; x86_64-pc-linux-gnu) Precedence: bulk X-Mailing-List: linux-trace-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Rspamd-Server: rspamout01 X-Rspamd-Queue-Id: 5ADB720026 X-Stat-Signature: 1uwzqw5mnwmh3u8qo41mkaefgh791rd1 X-Session-Marker: 726F737465647440676F6F646D69732E6F7267 X-Session-ID: U2FsdGVkX19zyPRC4beHFmE52u3seDFJGcDmTtLkMT8= X-HE-Tag: 1786457299-268855 X-HE-Meta: U2FsdGVkX1+qeOzVfeecE03pKVIZMZL/LY3tB5U71jzeeyt6L3MZ1zr6w/hrbWhiABmgTwFrlALMrYYr/G3aZrM/G5u03tBo8oV8UdJsNXKu5MbZYPTFm4lewncdptWOdMcCvmPCT3C4NukIe2aLr6DFeNWoXPGeuqtoumc4xw5rVLe/EURLRuUdb7OEjcQZCKkoPSZ8dJ3e+DSdKqJp2x8sSjXTeqsx2C4IUgvf5buHEQyO6ZISV1yIaBHxO35Gvii5Rf9wQWCh5Qw9+AwzHZx0wd6e7rIjCwnc/2e+2dJfPTGtoZzUXFmDQn1zYlcBUkiDIcOXkKKobzUhRU4aJvi6jRqM7p24 On Tue, 11 Aug 2026 19:48:18 +0800 Xiang Gao wrote: > One possible interface would be under: > > /sys/kernel/tracing/trace_stats/ > > It could provide an aggregate buffer value together with a breakdown > for main and snapshot buffers. Per-CPU statistics could also be added > if useful. As I previous said. I'm OK with adding a file there. -- Steve