[PATCH v7 0/2] ring-buffer: Making persistent ring buffers robust
From: Masami Hiramatsu (Google)
Date: Sat Mar 07 2026 - 09:26:31 EST
Hi,
Here is the 7th version of improvement patches for making persistent
ring buffers robust to failures. The previous version is here:
https://lore.kernel.org/all/177218401821.1988514.5579163042147205021.stgit@xxxxxxxxxxxxxxxxxxxxxxxxxxxx/
In this version, I dropped Handle RB_MISSED_* flags patch and partially
include required change to the last one[2/2], it also removes a redundant
subbuffer data check in per-cpu metadata validation and do NOT mark
RB_MISSED_EVENTS bit on discarded pages.
Thank you,
---
Masami Hiramatsu (Google) (2):
ring-buffer: Flush and stop persistent ring buffer on panic
ring-buffer: Skip invalid sub-buffers when validating persistent ring buffer
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 +++++
kernel/trace/ring_buffer.c | 85 ++++++++++++++++++++++------------
23 files changed, 98 insertions(+), 30 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>