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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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b3a7bb71bf
Add KUnit tests for ffs()-family bit scanning functions: ffs(), __ffs(), fls(), __fls(), fls64(), __ffs64(), and ffz(). The tests validate mathematical relationships (e.g. ffs(x) == __ffs(x) + 1), and test zero values, power-of-2 patterns, maximum values, and sparse bit patterns. Build and run tested with everything I could reach with KUnit: $ ./tools/testing/kunit/kunit.py run --arch=x86_64 ffs $ ./tools/testing/kunit/kunit.py run --arch=i386 ffs $ ./tools/testing/kunit/kunit.py run --arch=arm64 --make_options "CROSS_COMPILE=aarch64-linux-gnu-" ffs $ ./tools/testing/kunit/kunit.py run --arch=arm --make_options "CROSS_COMPILE=arm-linux-gnueabihf-" ffs $ ./tools/testing/kunit/kunit.py run --arch=powerpc ffs $ ./tools/testing/kunit/kunit.py run --arch=powerpc32 ffs $ ./tools/testing/kunit/kunit.py run --arch=powerpcle ffs $ ./tools/testing/kunit/kunit.py run --arch=riscv --make_options "CROSS_COMPILE=riscv64-linux-gnu-" ffs $ ./tools/testing/kunit/kunit.py run --arch=riscv32 --make_options "CROSS_COMPILE=riscv64-linux-gnu-" ffs $ ./tools/testing/kunit/kunit.py run --arch=s390 --make_options "CROSS_COMPILE=s390x-linux-gnu-" ffs $ ./tools/testing/kunit/kunit.py run --arch=m68k ffs $ ./tools/testing/kunit/kunit.py run --arch=loongarch ffs $ ./tools/testing/kunit/kunit.py run --arch=mips --make_options "CROSS_COMPILE=mipsel-linux-gnu-" ffs $ ./tools/testing/kunit/kunit.py run --arch=sparc --make_options "CROSS_COMPILE=sparc64-linux-gnu-" ffs $ ./tools/testing/kunit/kunit.py run --arch=sparc64 --make_options "CROSS_COMPILE=sparc64-linux-gnu-" ffs $ ./tools/testing/kunit/kunit.py run --arch=alpha --make_options "CROSS_COMPILE=alpha-linux-gnu-" ffs $ ./tools/testing/kunit/kunit.py run --arch=sh --make_options "CROSS_COMPILE=sh4-linux-gnu-" ffs Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/r/20250804164417.1612371-1-kees@kernel.org Signed-off-by: Kees Cook <kees@kernel.org>
53 lines
2.5 KiB
Makefile
53 lines
2.5 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0
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#
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# Makefile for tests of kernel library functions.
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# KUnit tests
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CFLAGS_bitfield_kunit.o := $(DISABLE_STRUCTLEAK_PLUGIN)
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obj-$(CONFIG_BITFIELD_KUNIT) += bitfield_kunit.o
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obj-$(CONFIG_BITS_TEST) += test_bits.o
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obj-$(CONFIG_BLACKHOLE_DEV_KUNIT_TEST) += blackhole_dev_kunit.o
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obj-$(CONFIG_CHECKSUM_KUNIT) += checksum_kunit.o
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obj-$(CONFIG_CMDLINE_KUNIT_TEST) += cmdline_kunit.o
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obj-$(CONFIG_CPUMASK_KUNIT_TEST) += cpumask_kunit.o
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obj-$(CONFIG_FFS_KUNIT_TEST) += ffs_kunit.o
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CFLAGS_fortify_kunit.o += $(call cc-disable-warning, unsequenced)
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CFLAGS_fortify_kunit.o += $(call cc-disable-warning, stringop-overread)
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CFLAGS_fortify_kunit.o += $(call cc-disable-warning, stringop-truncation)
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CFLAGS_fortify_kunit.o += $(DISABLE_STRUCTLEAK_PLUGIN)
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obj-$(CONFIG_FORTIFY_KUNIT_TEST) += fortify_kunit.o
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CFLAGS_test_fprobe.o += $(CC_FLAGS_FTRACE)
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obj-$(CONFIG_FPROBE_SANITY_TEST) += test_fprobe.o
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obj-$(CONFIG_HASHTABLE_KUNIT_TEST) += hashtable_test.o
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obj-$(CONFIG_HASH_KUNIT_TEST) += test_hash.o
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obj-$(CONFIG_TEST_IOV_ITER) += kunit_iov_iter.o
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obj-$(CONFIG_IS_SIGNED_TYPE_KUNIT_TEST) += is_signed_type_kunit.o
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obj-$(CONFIG_KPROBES_SANITY_TEST) += test_kprobes.o
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obj-$(CONFIG_LIST_KUNIT_TEST) += list-test.o
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obj-$(CONFIG_KFIFO_KUNIT_TEST) += kfifo_kunit.o
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obj-$(CONFIG_TEST_LIST_SORT) += test_list_sort.o
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obj-$(CONFIG_LINEAR_RANGES_TEST) += test_linear_ranges.o
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CFLAGS_longest_symbol_kunit.o += $(call cc-disable-warning, missing-prototypes)
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obj-$(CONFIG_LONGEST_SYM_KUNIT_TEST) += longest_symbol_kunit.o
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obj-$(CONFIG_MEMCPY_KUNIT_TEST) += memcpy_kunit.o
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CFLAGS_overflow_kunit.o = $(call cc-disable-warning, tautological-constant-out-of-range-compare)
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obj-$(CONFIG_OVERFLOW_KUNIT_TEST) += overflow_kunit.o
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obj-$(CONFIG_PRINTF_KUNIT_TEST) += printf_kunit.o
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obj-$(CONFIG_RANDSTRUCT_KUNIT_TEST) += randstruct_kunit.o
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obj-$(CONFIG_SCANF_KUNIT_TEST) += scanf_kunit.o
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obj-$(CONFIG_SEQ_BUF_KUNIT_TEST) += seq_buf_kunit.o
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obj-$(CONFIG_SIPHASH_KUNIT_TEST) += siphash_kunit.o
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obj-$(CONFIG_SLUB_KUNIT_TEST) += slub_kunit.o
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obj-$(CONFIG_TEST_SORT) += test_sort.o
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CFLAGS_stackinit_kunit.o += $(call cc-disable-warning, switch-unreachable)
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obj-$(CONFIG_STACKINIT_KUNIT_TEST) += stackinit_kunit.o
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obj-$(CONFIG_STRING_KUNIT_TEST) += string_kunit.o
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obj-$(CONFIG_STRING_HELPERS_KUNIT_TEST) += string_helpers_kunit.o
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obj-$(CONFIG_USERCOPY_KUNIT_TEST) += usercopy_kunit.o
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obj-$(CONFIG_UTIL_MACROS_KUNIT) += util_macros_kunit.o
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obj-$(CONFIG_RATELIMIT_KUNIT_TEST) += test_ratelimit.o
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obj-$(CONFIG_TEST_RUNTIME_MODULE) += module/
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