From: Masami Hiramatsu (Google) <mhiramat@kernel.org>
To: "Masami Hiramatsu (Google)" <mhiramat@kernel.org>
Cc: Steven Rostedt <rostedt@goodmis.org>,
Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org,
Ian Rogers <irogers@google.com>
Subject: Re: [PATCH v9 0/4] ring-buffer: Making persistent ring buffers robust
Date: Tue, 17 Mar 2026 08:21:48 +0900 [thread overview]
Message-ID: <20260317082148.a54ae29a7c991cea149d8f1b@kernel.org> (raw)
In-Reply-To: <177319273059.130641.10882692460536780093.stgit@mhiramat.tok.corp.google.com>
On Wed, 11 Mar 2026 10:32:11 +0900
"Masami Hiramatsu (Google)" <mhiramat@kernel.org> wrote:
> Hi,
>
> Here is the 9th version of improvement patches for making persistent
> ring buffers robust to failures.
> The previous version is here:
>
> https://lore.kernel.org/all/177303264034.767813.5345788067082238396.stgit@mhiramat.tok.corp.google.com/
>
> In this version, I fixed bugs/typos in [2/4][3/4] and add a bugfix patch
> [1/4] and a test[4/4]. Also, add a meta->subbuf_size validation[3/4].
Hmm, the test case fails if rewinding happens, because the
data_page validation failed in rewinding and stop rewinding.
The test may need to be designed more carefully.
Others looks good to me.
Thanks,
>
> Thank you,
>
> ---
>
> Masami Hiramatsu (Google) (4):
> ring-buffer: Fix to update per-subbuf entries of persistent ring buffer
> ring-buffer: Flush and stop persistent ring buffer on panic
> ring-buffer: Skip invalid sub-buffers when validating 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 | 169 ++++++++++++++++++++++++++--------
> kernel/trace/trace.c | 4 +
> 26 files changed, 192 insertions(+), 40 deletions(-)
> create mode 100644 arch/arm64/include/asm/ring_buffer.h
> create mode 100644 include/asm-generic/ring_buffer.h
>
> --
> Masami Hiramatsu (Google) <mhiramat@kernel.org>
--
Masami Hiramatsu (Google) <mhiramat@kernel.org>
prev parent reply other threads:[~2026-03-16 23:21 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-11 1:32 [PATCH v9 0/4] ring-buffer: Making persistent ring buffers robust Masami Hiramatsu (Google)
2026-03-11 1:32 ` [PATCH v9 1/4] ring-buffer: Fix to update per-subbuf entries of persistent ring buffer Masami Hiramatsu (Google)
2026-03-11 1:32 ` [PATCH v9 2/4] ring-buffer: Flush and stop persistent ring buffer on panic Masami Hiramatsu (Google)
2026-03-18 14:19 ` Masami Hiramatsu
2026-03-18 14:53 ` Mathieu Desnoyers
2026-03-18 15:29 ` Masami Hiramatsu
2026-03-18 15:51 ` Mathieu Desnoyers
2026-03-19 3:36 ` Masami Hiramatsu
2026-03-11 1:32 ` [PATCH v9 3/4] ring-buffer: Skip invalid sub-buffers when validating persistent ring buffer Masami Hiramatsu (Google)
2026-03-11 1:32 ` [PATCH v9 4/4] ring-buffer: Add persistent ring buffer selftest Masami Hiramatsu (Google)
2026-03-16 23:21 ` Masami Hiramatsu [this message]
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