Hi,
The main purpose of this series is to expose CPU cache attributes for
OpenRISC in sysfs using the cacheinfo API. The core implementation
to achieve this is in patch #3. Patch #1 and #2 add certain enhancements
to simplify the implementation of cacheinfo support.
Patch #1 removes duplication of cache-related data members in struct
cpuinfo_or1k.
Patch #2 introduces several utility functions. One set of functions is
used to check if the cache components and SPRs exist before attempting
to use them. The other set provides a convenient interface to flush or
invalidate a range of cache blocks.
While testing these changes with QEMU, I realized that the check being
performed in cpu_cache_is_present() would always get evaluated to true
when the UPR_UP bit was set. This series fixes this check and addresses
v4's review comments.
Thanks,
Sahil
Sahil Siddiq (3):
openrisc: Refactor struct cpuinfo_or1k to reduce duplication
openrisc: Introduce new utility functions to flush and invalidate
caches
openrisc: Add cacheinfo support
arch/openrisc/include/asm/cacheflush.h | 17 ++++
arch/openrisc/include/asm/cpuinfo.h | 24 ++++--
arch/openrisc/kernel/Makefile | 2 +-
arch/openrisc/kernel/cacheinfo.c | 104 +++++++++++++++++++++++++
arch/openrisc/kernel/dma.c | 18 +----
arch/openrisc/kernel/setup.c | 45 +----------
arch/openrisc/mm/cache.c | 56 ++++++++++---
arch/openrisc/mm/init.c | 5 +-
8 files changed, 196 insertions(+), 75 deletions(-)
create mode 100644 arch/openrisc/kernel/cacheinfo.c
base-commit: ea1413e5b53a8dd4fa7675edb23cdf828bbdce1e
--
2.48.1
