[PATCH v9 0/4] ring-buffer: Making persistent ring buffers robust
From: Masami Hiramatsu (Google)
Date: Tue Mar 10 2026 - 21:32:24 EST
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@xxxxxxxxxxxxxxxxxxxxxxxxxxxx/
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].
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@xxxxxxxxxx>