Hi, Here is the 6th version of improvement patches for making persistent ring buffers robust to failures. The previous version is here:
https://lore.kernel.org/all/177211310553.419230.7846100548994399256.st...@mhiramat.tok.corp.google.com/ In this version, I introduced asm/ring_buffer.h file for wrapping flush ring buffer function and use dcache_clean_pop() for arm64[1/3] also, showing invalid page detection (first time for each cpu) message when validating the persistent ring buffer[3/3]. Thank you, --- Masami Hiramatsu (Google) (3): ring-buffer: Flush and stop persistent ring buffer on panic ring-buffer: Handle RB_MISSED_* flags on commit field correctly 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 | 78 ++++++++++++++++++++++++---------- 23 files changed, 97 insertions(+), 24 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]>
