[PW_SID:1098152] riscv: lib: add optimized memchr() and extend KUnit tests by linux-riscv-bot · Pull Request #1985 · linux-riscv/linux

linux-riscv-bot · 2026-05-20T16:29:07Z

PR for series 1098152 applied to workflow__riscv__fixes

Name: riscv: lib: add optimized memchr() and extend KUnit tests
URL: https://patchwork.kernel.org/project/linux-riscv/list/?series=1098152
Version: 1

This implementation leverages word-at-a-time comparisons and the RISC-V Zbb extension to accelerate character searching, falling back to a generic byte-by-byte loop on systems without Zbb support. Benchmark results (QEMU TCG, rv64): | len | zbb | Wozbb | default | % Wozbb | % zbb | |------|--------|-------|---------|---------|---------| | 1 | 22.9 | 26 | 22.1 | 17.64 % | 3.62 %| | 7 | 115.5 | 130.6 | 100.1 | 30.46 % | 15.38 %| | 8 | 184.3 | 143.3 | 117.2 | 22.26 % | 57.25 %| | 16 | 322 | 205.1 | 179.7 | 14.13 % | 79.19 %| | 31 | 361 | 247.4 | 221.7 | 11.59 % | 62.83 %| | 64 | 880 | 280.6 | 233.2 | 20.32 % | 277.35 %| | 127 | 961.3 | 307.9 | 271.4 | 13.44 % | 254.20 %| | 512 | 1812.9 | 325.6 | 294.1 | 10.71 % | 516.42 %| | 1024 | 1973.2 | 335.4 | 273.8 | 22.49 % | 620.67 %| | 3173 | 2245.9 | 338.7 | 288.6 | 17.35 % | 678.20 %| | 4096 | 2327.5 | 345 | 317.5 | 8.661 % | 633.07 %| Signed-off-by: Milan Tripkovic <Milan.Tripkovic@rt-rk.com> Signed-off-by: Linux RISC-V bot <linux.riscv.bot@gmail.com>

Extend the string benchmarking suite to include memchr(). Extend the string unit test to include memchr() Signed-off-by: Milan Tripkovic <Milan.Tripkovic@rt-rk.com> Signed-off-by: Linux RISC-V bot <linux.riscv.bot@gmail.com>

linux-riscv-bot · 2026-05-20T17:22:58Z

Patch 1: "[1/2] riscv: lib: add memchr() implementation"
build-rv32-defconfig
Desc: Builds riscv32 defconfig
Duration: 139.97 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T18:00:04Z

Patch 1: "[1/2] riscv: lib: add memchr() implementation"
build-rv64-clang-allmodconfig
Desc: Builds riscv64 allmodconfig with Clang, and checks for errors and added warnings
Duration: 2224.62 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T18:50:39Z

Patch 1: "[1/2] riscv: lib: add memchr() implementation"
build-rv64-gcc-allmodconfig
Desc: Builds riscv64 allmodconfig with GCC, and checks for errors and added warnings
Duration: 3032.72 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T18:51:06Z

Patch 1: "[1/2] riscv: lib: add memchr() implementation"
build-rv64-nommu-k210-defconfig
Desc: Builds riscv64 defconfig with NOMMU for K210
Duration: 25.85 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T18:51:35Z

Patch 1: "[1/2] riscv: lib: add memchr() implementation"
build-rv64-nommu-k210-virt
Desc: Builds riscv64 defconfig with NOMMU for the virt platform
Duration: 27.52 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T18:51:40Z

Patch 1: "[1/2] riscv: lib: add memchr() implementation"
checkpatch
Desc: Runs checkpatch.pl on the patch
Duration: 2.69 seconds
Result: WARNING
Output:

WARNING: added, moved or deleted file(s), does MAINTAINERS need updating?
#63: 
new file mode 100644

total: 0 errors, 1 warnings, 0 checks, 158 lines checked

NOTE: For some of the reported defects, checkpatch may be able to
      mechanically convert to the typical style using --fix or --fix-inplace.

Commit 7b5b8cbf4ff3 ("riscv: lib: add memchr() implementation") has style problems, please review.

NOTE: Ignored message types: ALLOC_SIZEOF_STRUCT CAMELCASE COMMIT_LOG_LONG_LINE GIT_COMMIT_ID MACRO_ARG_REUSE NO_AUTHOR_SIGN_OFF

NOTE: If any of the errors are false positives, please report
      them to the maintainer, see CHECKPATCH in MAINTAINERS.
total: 0 errors, 1 warnings, 0 checks, 158 lines checked
WARNING: added, moved or deleted file(s), does MAINTAINERS need updating?

linux-riscv-bot · 2026-05-20T18:53:09Z

Patch 1: "[1/2] riscv: lib: add memchr() implementation"
dtb-warn-rv64
Desc: Checks for Device Tree warnings/errors
Duration: 87.61 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T18:53:11Z

Patch 1: "[1/2] riscv: lib: add memchr() implementation"
header-inline
Desc: Detects static functions without inline keyword in header files
Duration: 0.25 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T18:53:13Z

Patch 1: "[1/2] riscv: lib: add memchr() implementation"
kdoc
Desc: Detects for kdoc errors
Duration: 0.90 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T18:53:15Z

Patch 1: "[1/2] riscv: lib: add memchr() implementation"
module-param
Desc: Detect module_param changes
Duration: 0.26 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T18:53:18Z

Patch 1: "[1/2] riscv: lib: add memchr() implementation"
verify-fixes
Desc: Verifies that the Fixes: tags exist
Duration: 0.23 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T18:53:20Z

Patch 1: "[1/2] riscv: lib: add memchr() implementation"
verify-signedoff
Desc: Verifies that Signed-off-by: tags are correct
Duration: 0.32 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T18:55:55Z

Patch 2: "[2/2] lib/string_kunit: extend benchmarks and unit test to memchr()"
build-rv32-defconfig
Desc: Builds riscv32 defconfig
Duration: 139.61 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T19:13:17Z

Patch 2: "[2/2] lib/string_kunit: extend benchmarks and unit test to memchr()"
build-rv64-clang-allmodconfig
Desc: Builds riscv64 allmodconfig with Clang, and checks for errors and added warnings
Duration: 1040.54 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T19:37:00Z

Patch 2: "[2/2] lib/string_kunit: extend benchmarks and unit test to memchr()"
build-rv64-gcc-allmodconfig
Desc: Builds riscv64 allmodconfig with GCC, and checks for errors and added warnings
Duration: 1420.97 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T19:37:28Z

Patch 2: "[2/2] lib/string_kunit: extend benchmarks and unit test to memchr()"
build-rv64-nommu-k210-defconfig
Desc: Builds riscv64 defconfig with NOMMU for K210
Duration: 26.38 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T19:37:57Z

Patch 2: "[2/2] lib/string_kunit: extend benchmarks and unit test to memchr()"
build-rv64-nommu-k210-virt
Desc: Builds riscv64 defconfig with NOMMU for the virt platform
Duration: 27.03 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T19:37:59Z

Patch 2: "[2/2] lib/string_kunit: extend benchmarks and unit test to memchr()"
checkpatch
Desc: Runs checkpatch.pl on the patch
Duration: 0.81 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T19:39:27Z

Patch 2: "[2/2] lib/string_kunit: extend benchmarks and unit test to memchr()"
dtb-warn-rv64
Desc: Checks for Device Tree warnings/errors
Duration: 86.14 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T19:39:29Z

Patch 2: "[2/2] lib/string_kunit: extend benchmarks and unit test to memchr()"
header-inline
Desc: Detects static functions without inline keyword in header files
Duration: 0.24 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T19:39:31Z

Patch 2: "[2/2] lib/string_kunit: extend benchmarks and unit test to memchr()"
kdoc
Desc: Detects for kdoc errors
Duration: 0.87 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T19:39:33Z

Patch 2: "[2/2] lib/string_kunit: extend benchmarks and unit test to memchr()"
module-param
Desc: Detect module_param changes
Duration: 0.25 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T19:39:35Z

Patch 2: "[2/2] lib/string_kunit: extend benchmarks and unit test to memchr()"
verify-fixes
Desc: Verifies that the Fixes: tags exist
Duration: 0.23 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T19:39:37Z

Patch 2: "[2/2] lib/string_kunit: extend benchmarks and unit test to memchr()"
verify-signedoff
Desc: Verifies that Signed-off-by: tags are correct
Duration: 0.31 seconds
Result: PASS

Linux RISC-V bot and others added 3 commits May 14, 2026 08:49

Adding CI files

cd9d421

lib/string_kunit: extend benchmarks and unit test to memchr()

97961ad

Extend the string benchmarking suite to include memchr(). Extend the string unit test to include memchr() Signed-off-by: Milan Tripkovic <Milan.Tripkovic@rt-rk.com> Signed-off-by: Linux RISC-V bot <linux.riscv.bot@gmail.com>

linux-riscv-bot force-pushed the workflow__riscv__fixes branch from cd9d421 to a1231b7 Compare May 22, 2026 06:39

linux-riscv-bot closed this May 22, 2026

linux-riscv-bot deleted the pw1098152 branch May 22, 2026 06:39

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