[PW_SID:1098014] riscv: lib: add optimized memcmp() and extend KUnit tests by linux-riscv-bot · Pull Request #1982 · linux-riscv/linux

linux-riscv-bot · 2026-05-20T12:50:19Z

PR for series 1098014 applied to workflow__riscv__fixes

Name: riscv: lib: add optimized memcmp() and extend KUnit tests
URL: https://patchwork.kernel.org/project/linux-riscv/list/?series=1098014
Version: 6

Add an assembly implementation of memcmp() for RISC-V. The implementation uses word-aligned loads for the generic path and the ZBB extension for optimized sign resolution, with an assembly fallback for non-ZBB systems. Benchmark results (QEMU TCG, rv64): Len | Default |NoALIGN | ALIGN | %NoALIGN | %ALIGN ------|---------|--------|--------|----------|-------- 1 B | 20.3 | 21.5 | 20.9 | +5.9% | +3.0% 7 B | 88.9 | 96.9 | 155.7 | +9.0% | +75.1% 8 B | 89.6 | 110.5 | 176.2 | +23.3% | +96.7% 16 B | 134.4 | 172.8 | 334.8 | +28.6% | +149.1% 31 B | 163.5 | 211.9 | 606.2 | +29.6% | +270.8% 64 B | 203.8 | 240.3 | 968.6 | +17.9% | +375.3% 127 B | 224.6 | 269.0 | 1362.8 | +19.8% | +506.8% 512 B | 235.7 | 269.9 | 1913.7 | +14.5% | +711.9% 1024 B| 256.8 | 283.5 | 2123.6 | +10.4% | +726.9% 4096 B| 263.8 | 299.7 | 2290.4 | +13.6% | +768.2% 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 memcmp(). Extend the string unit test to include memcmp(). 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 · 2026-05-20T12:56:22Z

Patch 1: "[v6,1/2] riscv: lib: add memcmp() implementation"
build-rv32-defconfig
Desc: Builds riscv32 defconfig
Duration: 140.87 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T13:33:40Z

Patch 1: "[v6,1/2] riscv: lib: add memcmp() implementation"
build-rv64-clang-allmodconfig
Desc: Builds riscv64 allmodconfig with Clang, and checks for errors and added warnings
Duration: 2236.10 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T14:24:19Z

Patch 1: "[v6,1/2] riscv: lib: add memcmp() implementation"
build-rv64-gcc-allmodconfig
Desc: Builds riscv64 allmodconfig with GCC, and checks for errors and added warnings
Duration: 3036.61 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T14:24:47Z

Patch 1: "[v6,1/2] riscv: lib: add memcmp() implementation"
build-rv64-nommu-k210-defconfig
Desc: Builds riscv64 defconfig with NOMMU for K210
Duration: 26.04 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T14:25:17Z

Patch 1: "[v6,1/2] riscv: lib: add memcmp() implementation"
build-rv64-nommu-k210-virt
Desc: Builds riscv64 defconfig with NOMMU for the virt platform
Duration: 27.11 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T14:25:22Z

Patch 1: "[v6,1/2] riscv: lib: add memcmp() implementation"
checkpatch
Desc: Runs checkpatch.pl on the patch
Duration: 2.92 seconds
Result: WARNING
Output:

WARNING: added, moved or deleted file(s), does MAINTAINERS need updating?
#61: 
new file mode 100644

total: 0 errors, 1 warnings, 0 checks, 138 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 8d8c09552dc8 ("riscv: lib: add memcmp() 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, 138 lines checked
WARNING: added, moved or deleted file(s), does MAINTAINERS need updating?

linux-riscv-bot · 2026-05-20T14:26:55Z

Patch 1: "[v6,1/2] riscv: lib: add memcmp() implementation"
dtb-warn-rv64
Desc: Checks for Device Tree warnings/errors
Duration: 91.00 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T14:26:57Z

Patch 1: "[v6,1/2] riscv: lib: add memcmp() implementation"
header-inline
Desc: Detects static functions without inline keyword in header files
Duration: 0.25 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T14:27:00Z

Patch 1: "[v6,1/2] riscv: lib: add memcmp() implementation"
kdoc
Desc: Detects for kdoc errors
Duration: 0.93 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T14:27:03Z

Patch 1: "[v6,1/2] riscv: lib: add memcmp() implementation"
module-param
Desc: Detect module_param changes
Duration: 0.26 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T14:27:05Z

Patch 1: "[v6,1/2] riscv: lib: add memcmp() implementation"
verify-fixes
Desc: Verifies that the Fixes: tags exist
Duration: 0.23 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T14:27:08Z

Patch 1: "[v6,1/2] riscv: lib: add memcmp() implementation"
verify-signedoff
Desc: Verifies that Signed-off-by: tags are correct
Duration: 0.53 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T14:29:45Z

Patch 2: "[v6,2/2] lib/string_kunit: extend benchmarks and unit test to memcmp()"
build-rv32-defconfig
Desc: Builds riscv32 defconfig
Duration: 140.37 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T14:47:09Z

Patch 2: "[v6,2/2] lib/string_kunit: extend benchmarks and unit test to memcmp()"
build-rv64-clang-allmodconfig
Desc: Builds riscv64 allmodconfig with Clang, and checks for errors and added warnings
Duration: 1042.12 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T15:10:50Z

Patch 2: "[v6,2/2] lib/string_kunit: extend benchmarks and unit test to memcmp()"
build-rv64-gcc-allmodconfig
Desc: Builds riscv64 allmodconfig with GCC, and checks for errors and added warnings
Duration: 1419.56 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T15:11:18Z

Patch 2: "[v6,2/2] lib/string_kunit: extend benchmarks and unit test to memcmp()"
build-rv64-nommu-k210-defconfig
Desc: Builds riscv64 defconfig with NOMMU for K210
Duration: 25.78 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T15:11:48Z

Patch 2: "[v6,2/2] lib/string_kunit: extend benchmarks and unit test to memcmp()"
build-rv64-nommu-k210-virt
Desc: Builds riscv64 defconfig with NOMMU for the virt platform
Duration: 27.55 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T15:11:51Z

Patch 2: "[v6,2/2] lib/string_kunit: extend benchmarks and unit test to memcmp()"
checkpatch
Desc: Runs checkpatch.pl on the patch
Duration: 0.86 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T15:13:19Z

Patch 2: "[v6,2/2] lib/string_kunit: extend benchmarks and unit test to memcmp()"
dtb-warn-rv64
Desc: Checks for Device Tree warnings/errors
Duration: 86.65 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T15:13:21Z

Patch 2: "[v6,2/2] lib/string_kunit: extend benchmarks and unit test to memcmp()"
header-inline
Desc: Detects static functions without inline keyword in header files
Duration: 0.24 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T15:13:24Z

Patch 2: "[v6,2/2] lib/string_kunit: extend benchmarks and unit test to memcmp()"
kdoc
Desc: Detects for kdoc errors
Duration: 0.93 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T15:13:27Z

Patch 2: "[v6,2/2] lib/string_kunit: extend benchmarks and unit test to memcmp()"
module-param
Desc: Detect module_param changes
Duration: 0.26 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T15:13:29Z

Patch 2: "[v6,2/2] lib/string_kunit: extend benchmarks and unit test to memcmp()"
verify-fixes
Desc: Verifies that the Fixes: tags exist
Duration: 0.23 seconds
Result: PASS

linux-riscv-bot · 2026-05-20T15:13:31Z

Patch 2: "[v6,2/2] lib/string_kunit: extend benchmarks and unit test to memcmp()"
verify-signedoff
Desc: Verifies that Signed-off-by: tags are correct
Duration: 0.30 seconds
Result: PASS

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

Adding CI files

cd9d421

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 pw1098014 branch May 22, 2026 06:39

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