Hi,

Here is the 15th version of improvement patches for making persistent
ring buffers robust to failures.
The previous version is here:

https://lore.kernel.org/all/177487498530.3463592.12715592581212799257.stgit@mhiramat.tok.corp.google.com/

This version fixes warning if reader see contiguous multiple
empty (invalidated) pages on the recovered persistent ring buffer
[2/5], do not show discarded pages if it is 0 [2/5], use pr_warn()
for showing test result [4/5], and inject errors to the pages which
is multiples of 5 too[4/5].
This also drops "Reset RB_MISSED_* flags" patch, and add a patch
to show commit number on each data page [5/5] for debugging.

In this version, I added arm64 maitainers to request their
review for [1/5], which introduces asm/ring_buffer.h for flushing
the cache before reboot.

Thank you,

---

Masami Hiramatsu (Google) (5):
      ring-buffer: Flush and stop persistent ring buffer on panic
      ring-buffer: Skip invalid sub-buffers when validating persistent ring buffer
      ring-buffer: Skip invalid sub-buffers when rewinding persistent ring buffer
      ring-buffer: Add persistent ring buffer invalid-page inject test
      ring-buffer: Show commit numbers in buffer_meta file


 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                 |   31 ++++
 kernel/trace/ring_buffer.c           |  258 ++++++++++++++++++++++++++--------
 kernel/trace/trace.c                 |    4 +
 26 files changed, 273 insertions(+), 64 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>