On Wed, 11 Mar 2026 10:32:11 +0900 "Masami Hiramatsu (Google)" <[email protected]> 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.st...@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) <[email protected]> -- Masami Hiramatsu (Google) <[email protected]>
