From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 A61BD1FC8; Tue, 24 Mar 2026 00:00:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774310423; cv=none; b=aUx4TgXAzqsu+XtBthHQDEpp90oeTjHjBsTj0nM9uZxwl3xjQ4DHWU/wJvdU04P1Yeg2skE2TLAGkchfLxVf+SmYv7ZEMsQvmHoAl+dwJ/RBKAbW5CuUxIfcm/GjMDsKBw+Ft6dkEO+HUOG6EdDIvt6SY1HDJ6tPt3Wvsx5C1lU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774310423; c=relaxed/simple; bh=BQDOy9r+fV2+uNR5ku1dL3si6189g6mI5hbOGf0eN8I=; h=Date:From:To:Cc:Subject:Message-Id:In-Reply-To:References: Mime-Version:Content-Type; b=t7QK+XT15GX1ShfWbvPdYPsSSZZzDdJjfuiUAxZAWTCmEXklcMD5kwOQLMQhtjfa+yzADLBuaQA6nRaDovLE+PC/VazvSEvG0BK1b+QSXVqgxibcEsdptgwJCn9xmZ7+4du6ub1ZDOnJXnUpaGWsSsRmMVCCC7ZtG1xHaXO7Bqw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=cEO94EX9; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="cEO94EX9" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2D667C4CEF7; Tue, 24 Mar 2026 00:00:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1774310423; bh=BQDOy9r+fV2+uNR5ku1dL3si6189g6mI5hbOGf0eN8I=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=cEO94EX9N8HX/zlhknYhYohCeDg+qhVvrZezxlBS0/it+v7ayC0wfyRTdc0m8dT8m 589MgEiU2R3K2lUhOfsM5kr9tjvhH54fxaFGG2dPz/qgOBUjMCEXyrHepPGItb0/R3 RDTvsa4v32Qn3m9Az3QFgvGlaqZl5psGocknYh2e7sHol+cwxQMZoRydegCyNTdgub CUSJelFyc0rT94Sqb0jNtYlm17Ie0QgYlR6jyYd1a9w5qO+7nbmnffPr93GPl9bgpf tZdKgyjJgCHdWYFptb9U5NTztRdFd7frbFUb6a9Uwe6FdLBmeUqIll6OLtiHmXLU8+ EDlBc9eVsgL7A== Date: Tue, 24 Mar 2026 09:00:20 +0900 From: Masami Hiramatsu (Google) To: "Masami Hiramatsu (Google)" Cc: Steven Rostedt , Mathieu Desnoyers , linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org, Ian Rogers Subject: Re: [PATCH v11 0/4] ring-buffer: Making persistent ring buffers robust Message-Id: <20260324090020.90a472500c0c4fa73ef6868c@kernel.org> In-Reply-To: <177426904455.3236905.2079719303397330696.stgit@mhiramat.tok.corp.google.com> References: <177426904455.3236905.2079719303397330696.stgit@mhiramat.tok.corp.google.com> X-Mailer: Sylpheed 3.8.0beta1 (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 Oops. This is v12. Ignore this. On Mon, 23 Mar 2026 21:30:45 +0900 "Masami Hiramatsu (Google)" wrote: > Hi, > > Here is the 12th version of improvement patches for making persistent > ring buffers robust to failures. > The previous version is here: > > https://lore.kernel.org/all/177391152793.193994.8986943289250629418.stgit@mhiramat.tok.corp.google.com/ > > > In this version, I rebased it on tracing/fixes branch (thus > the first fix patch has been removed) and fixed > a build error which came from a copy-paste mistake. > > Thank you, > > --- > > Masami Hiramatsu (Google) (4): > ring-buffer: Flush and stop persistent ring buffer on panic > ring-buffer: Skip invalid sub-buffers when validating persistent ring buffer > ring-buffer: Skip invalid sub-buffers when rewinding persistent ring buffer > ring-buffer: Add persistent ring buffer selftest > > > arch/alpha/include/asm/Kbuild | 1 > arch/arc/include/asm/Kbuild | 1 > arch/arm/include/asm/Kbuild | 1 > arch/arm64/include/asm/ring_buffer.h | 10 + > arch/csky/include/asm/Kbuild | 1 > arch/hexagon/include/asm/Kbuild | 1 > arch/loongarch/include/asm/Kbuild | 1 > arch/m68k/include/asm/Kbuild | 1 > arch/microblaze/include/asm/Kbuild | 1 > arch/mips/include/asm/Kbuild | 1 > arch/nios2/include/asm/Kbuild | 1 > arch/openrisc/include/asm/Kbuild | 1 > arch/parisc/include/asm/Kbuild | 1 > arch/powerpc/include/asm/Kbuild | 1 > arch/riscv/include/asm/Kbuild | 1 > arch/s390/include/asm/Kbuild | 1 > arch/sh/include/asm/Kbuild | 1 > arch/sparc/include/asm/Kbuild | 1 > arch/um/include/asm/Kbuild | 1 > arch/x86/include/asm/Kbuild | 1 > arch/xtensa/include/asm/Kbuild | 1 > include/asm-generic/ring_buffer.h | 13 ++ > include/linux/ring_buffer.h | 1 > kernel/trace/Kconfig | 15 ++ > kernel/trace/ring_buffer.c | 237 ++++++++++++++++++++++++++-------- > kernel/trace/trace.c | 4 + > 26 files changed, 241 insertions(+), 59 deletions(-) > create mode 100644 arch/arm64/include/asm/ring_buffer.h > create mode 100644 include/asm-generic/ring_buffer.h > > -- > Masami Hiramatsu (Google) -- Masami Hiramatsu (Google)