| From: |
| Milan Tripkovic <milant2002-AT-gmail.com> |
| To: |
| Paul Walmsley <pjw-AT-kernel.org>, Palmer Dabbelt <palmer-AT-dabbelt.com>, Albert Ou <aou-AT-eecs.berkeley.edu>, Kees Cook <kees-AT-kernel.org> |
| Subject: |
| [PATCH 0/2] riscv: lib: add optimized memchr() and extend KUnit tests |
| Date: |
| Wed, 20 May 2026 17:55:29 +0200 |
| Message-ID: |
| <20260520155532.1139471-1-milant2002@gmail.com> |
| Cc: |
| Alexandre Ghiti <alex-AT-ghiti.fr>, Andy Shevchenko <andy-AT-kernel.org>, linux-riscv-AT-lists.infradead.org, linux-kernel-AT-vger.kernel.org, linux-hardening-AT-vger.kernel.org, Dusan Stojkovic <Dusan.Stojkovic-AT-rt-rk.com>, Milan Tripkovic <Milan.Tripkovic-AT-rt-rk.com> |
| Archive-link: |
| Article |
From: Milan Tripkovic <Milan.Tripkovic@rt-rk.com>
Add an optimized assembly implementation of memchr() for RISC-V.
The implementation uses word-aligned loads and Zbb optimizations where
available, with a fallback for non-Zbb hardware.
The series also includes KUnit tests for functional verification
and performance benchmarking.
Signed-off-by: Milan Tripkovic <Milan.Tripkovic@rt-rk.com>
Milan Tripkovic (2):
riscv: lib: add memchr() implementation
lib/string_kunit: extend benchmarks and unit test to memchr()
arch/riscv/include/asm/string.h | 3 +-
arch/riscv/lib/Makefile | 1 +
arch/riscv/lib/memchr.S | 126 ++++++++++++++++++++++++++++++++
arch/riscv/purgatory/Makefile | 5 +-
lib/tests/string_kunit.c | 53 ++++++++++++++
5 files changed, 186 insertions(+), 2 deletions(-)
create mode 100644 arch/riscv/lib/memchr.S
--
2.43.0
