August 2025 - Linux-kselftest-mirror

[Patch v2 0/2] Add kselftest harness selftest with variant

by Wei Yang

We already have a selftest for harness, while there is not usage of FIXTURE_VARIANT. Patch 2 add FIXTURE_VARIANT usage in the selftest. Patch 1 is a typo fix. v2: * drop patch 2 in v1 * adjust patch 2 based on Thomas comment Wei Yang (2): selftests: harness: correct typo of __constructor_order_forward in comment selftests: harness: Add kselftest harness selftest with variant tools/testing/selftests/kselftest_harness.h | 2 +- .../kselftest_harness/harness-selftest.c | 30 +++++++++++++++++++ .../harness-selftest.expected | 20 ++++++++++--- 3 files changed, 47 insertions(+), 5 deletions(-) -- 2.34.1

3 weeks

3
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[PATCHv2 net-next 0/3] bonding: support aggregator selection based on port priority

by Hangbin Liu

This patchset introduces a new per-port bonding option: `ad_actor_port_prio`. It allows users to configure the actor's port priority, which can then be used by the bonding driver for aggregator selection based on port priority. This provides finer control over LACP aggregator choice, especially in setups with multiple eligible aggregators over 2 switches. v2: a) set default bond option value for port priority (Nikolay Aleksandrov) b) fix __agg_ports_priority coding style (Nikolay Aleksandrov) c) fix shellcheck warns Hangbin Liu (3): bonding: add support for per-port LACP actor priority bonding: support aggregator selection based on port priority selftests: bonding: add test for LACP actor port priority Documentation/networking/bonding.rst | 18 +++- drivers/net/bonding/bond_3ad.c | 29 ++++++ drivers/net/bonding/bond_netlink.c | 16 ++++ drivers/net/bonding/bond_options.c | 37 ++++++++ include/net/bond_3ad.h | 2 + include/net/bond_options.h | 1 + include/uapi/linux/if_link.h | 1 + .../selftests/drivers/net/bonding/Makefile | 3 +- .../drivers/net/bonding/bond_lacp_prio.sh | 93 +++++++++++++++++++ tools/testing/selftests/net/forwarding/lib.sh | 24 ----- tools/testing/selftests/net/lib.sh | 24 +++++ 11 files changed, 222 insertions(+), 26 deletions(-) create mode 100755 tools/testing/selftests/drivers/net/bonding/bond_lacp_prio.sh -- 2.50.1

3 weeks

3
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[PATCH bpf-next v10 0/3] libbpf: fix USDT SIB argument handling causing unrecognized register error

by Jiawei Zhao

When using GCC on x86-64 to compile an usdt prog with -O1 or higher optimization, the compiler will generate SIB addressing mode for global array and PC-relative addressing mode for global variable, e.g. "1@-96(%rbp,%rax,8)" and "-1@4+t1(%rip)". The current USDT implementation in libbpf cannot parse these two formats, causing `bpf_program__attach_usdt()` to fail with -ENOENT (unrecognized register). This patch series adds support for SIB addressing mode in USDT probes. The main changes include: - add correct handling logic for SIB-addressed arguments in `parse_usdt_arg`. - add an usdt_o2 test case to cover SIB addressing mode. Testing shows that the SIB probe correctly generates 8@(%rcx,%rax,8) argument spec and passes all validation checks. The modification history of this patch series: Change since v1: - refactor the code to make it more readable - modify the commit message to explain why and how Change since v2: - fix the `scale` uninitialized error Change since v3: - force -O2 optimization for usdt.test.o to generate SIB addressing usdt and pass all test cases. Change since v4: - split the patch into two parts, one for the fix and the other for the test Change since v5: - Only enable optimization for x86 architecture to generate SIB addressing usdt argument spec. Change since v6: - Add an usdt_o2 test case to cover SIB addressing mode. - Reinstate the usdt.c test case. Change since v7: - Refactor modifications to __bpf_usdt_arg_spec to avoid increasing its size, achieving better compatibility - Fix some minor code style issues - Refactor the usdt_o2 test case, removing semaphore and adding GCC attribute to force -O2 optimization Change since v8: - Refactor the usdt_o2 test case, using assembly to force SIB addressing mode. Change since v9: - Only enable the usdt_o2 test case on x86_64 and i386 architectures since the SIB addressing mode is only supported on x86_64 and i386. Jiawei Zhao (3): libbpf: fix USDT SIB argument handling causing unrecognized register error selftests/bpf: Add an usdt_o2 test case in selftests to cover SIB handling logic selftests/bpf: make usdt_o2 reliably generate SIB USDT arg spec tools/lib/bpf/usdt.bpf.h | 54 ++++++++++++- tools/lib/bpf/usdt.c | 61 ++++++++++++-- tools/testing/selftests/bpf/Makefile | 1 + .../selftests/bpf/prog_tests/usdt_o2.c | 79 +++++++++++++++++++ .../selftests/bpf/progs/test_usdt_o2.c | 37 +++++++++ 5 files changed, 225 insertions(+), 7 deletions(-) create mode 100644 tools/testing/selftests/bpf/prog_tests/usdt_o2.c create mode 100644 tools/testing/selftests/bpf/progs/test_usdt_o2.c -- 2.43.0

3 weeks

3
6
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[Patch v3 0/2] assert rmap behaves as expected

by Wei Yang

As David suggested, currently we don't have a high level test case to verify the behavior of rmap. This patch set introduce the verification on rmap by migration. Patch 1 is a preparation to move ksm related operations into vm_util. Patch 2 is the new test case for rmap. Currently it covers following four scenarios: * anonymous page * shmem page * pagecache page * ksm page v2->v3: * handle ksm error return in worker * rebase on current mm-unstable v1->v2: * do check on file opening in init_global_file_handlers() * factor out ksm_merge() and ksm_unmerge() instead of partial of it * align the return value of helpers: 0 on success, -errno on error * skip instead of assert if numa not available * check ksm sys file before continue * use private anonymous map instead of shared map * check pfn instead of content * retry migrate * fault in region for each process by FORCE_READ() RFC->v1: * open file in function itself instead of pass fd as parameter * fault in the region by accessing it instead of print content Wei Yang (2): selftests/mm: put general ksm operation into vm_util selftests/mm: assert rmap behave as expected MAINTAINERS | 1 + tools/testing/selftests/mm/.gitignore | 1 + tools/testing/selftests/mm/Makefile | 3 + .../selftests/mm/ksm_functional_tests.c | 134 +----- tools/testing/selftests/mm/rmap.c | 433 ++++++++++++++++++ tools/testing/selftests/mm/run_vmtests.sh | 4 + tools/testing/selftests/mm/vm_util.c | 123 +++++ tools/testing/selftests/mm/vm_util.h | 7 + 8 files changed, 595 insertions(+), 111 deletions(-) create mode 100644 tools/testing/selftests/mm/rmap.c -- 2.34.1

3 weeks

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Re: [PATCH v4 4/7] mm/selftests: Fix split_huge_page_test failure on systems with 64KB page size

by David Hildenbrand

> >>diff --git a/tools/testing/selftests/mm/split_huge_page_test.c b/ > tools/testing/selftests/mm/split_huge_page_test.c > >>index eadbeb820d71..7cbeaebc9d71 100644 > >>--- a/tools/testing/selftests/mm/split_huge_page_test.c > >>+++ b/tools/testing/selftests/mm/split_huge_page_test.c > >>@@ -523,6 +523,9 @@ int main(int argc, char **argv) > >> const char *fs_loc; > >> bool created_tmp; > >> int offset; > >>+ unsigned int max_order; > >>+ unsigned int nr_pages; > >>+ unsigned int tests; > >> > >> ksft_print_header(); > >> > >>@@ -534,35 +537,38 @@ int main(int argc, char **argv) > >> if (argc > 1) > >> optional_xfs_path = argv[1]; > >> > >>- ksft_set_plan(1+8+1+9+9+8*4+2); > >>- > >> pagesize = getpagesize(); > >> pageshift = ffs(pagesize) - 1; > >> pmd_pagesize = read_pmd_pagesize(); > >> if (!pmd_pagesize) > >> ksft_exit_fail_msg("Reading PMD pagesize failed\n"); > >> > >>+ nr_pages = pmd_pagesize / pagesize; > >>+ max_order = sz2ord(pmd_pagesize); > > ^ > > extra space here > > > >>+ tests = 2 + (max_order - 1) + (2 * max_order) + (max_order - > 1) * 4 + 2; > > Is it possible to have some defines here instead plain numbers? > Thanks I assume we should look into using kselftest_harness as a separate effort, so we can avoid this manual test calculation completely. I'm afraid even using defines will not make this significntly more readable. -- Cheers David / dhildenb

3 weeks, 1 day

2
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[PATCH v2 0/6] ONE_REG interface for SBI FWFT extension

by Anup Patel

This series adds ONE_REG interface for SBI FWFT extension implemented by KVM RISC-V. This was missed out in accepted SBI FWFT patches for KVM RISC-V. These patches can also be found in the riscv_kvm_fwft_one_reg_v2 branch at: https://github.com/avpatel/linux.git Changes since v1: - Dropped have_state in PATCH4 as suggested by Drew - Added Drew's Reviewed-by in appropriate patches Anup Patel (6): RISC-V: KVM: Set initial value of hedeleg in kvm_arch_vcpu_create() RISC-V: KVM: Introduce feature specific reset for SBI FWFT RISC-V: KVM: Introduce optional ONE_REG callbacks for SBI extensions RISC-V: KVM: Move copy_sbi_ext_reg_indices() to SBI implementation RISC-V: KVM: Implement ONE_REG interface for SBI FWFT state KVM: riscv: selftests: Add SBI FWFT to get-reg-list test arch/riscv/include/asm/kvm_vcpu_sbi.h | 22 +- arch/riscv/include/uapi/asm/kvm.h | 14 ++ arch/riscv/kvm/vcpu.c | 3 +- arch/riscv/kvm/vcpu_onereg.c | 60 +----- arch/riscv/kvm/vcpu_sbi.c | 172 ++++++++++++--- arch/riscv/kvm/vcpu_sbi_fwft.c | 198 ++++++++++++++++-- arch/riscv/kvm/vcpu_sbi_sta.c | 63 ++++-- .../selftests/kvm/riscv/get-reg-list.c | 28 +++ 8 files changed, 433 insertions(+), 127 deletions(-) -- 2.43.0

3 weeks, 1 day

1
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[PATCH 0/3] kselftest/arm64: Cleanups and readability fixes

by vivekyadav1207731111＠gmail.com

From: Vivek Yadav <vivekyadav1207731111(a)gmail.com> Hi all, This small series makes cosmetic style cleanups in the arm64 kselftests to improve readability and suppress checkpatch warnings. These changes are purely cosmetic and do not affect functionality. Changes in this series: * Suppress unnecessary checkpatch warning in a comment * Add parentheses around sizeof for clarity * Remove redundant blank line --- Vivek Yadav (3): kselftest/arm64: Remove extra blank line kselftest/arm64: Supress warning and improve readability kselftest/arm64: Add parentheses around sizeof for clarity tools/testing/selftests/arm64/abi/hwcap.c | 1 - tools/testing/selftests/arm64/bti/assembler.h | 1 - tools/testing/selftests/arm64/fp/fp-ptrace.c | 1 - tools/testing/selftests/arm64/fp/fp-stress.c | 4 ++-- tools/testing/selftests/arm64/fp/sve-ptrace.c | 2 +- tools/testing/selftests/arm64/fp/vec-syscfg.c | 1 - tools/testing/selftests/arm64/fp/zt-ptrace.c | 1 - tools/testing/selftests/arm64/gcs/gcs-locking.c | 1 - 8 files changed, 3 insertions(+), 9 deletions(-) -- 2.25.1

3 weeks, 1 day

1
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[PATCH 0/3] kselftest/arm64: Cleanups and readability fixes

by vivekyadav1207731111＠gmail.com

From: Vivek Yadav <vivekyadav1207731111(a)gmail.com> Hi all, This small series makes cosmetic style cleanups in the arm64 kselftests to improve readability and suppress checkpatch warnings. These changes are purely cosmetic and do not affect functionality. Changes in this series: * Suppress unnecessary checkpatch warning in a comment * Add parentheses around sizeof for clarity * Remove redundant blank line --- Vivek Yadav (3): kselftest/arm64: Remove extra blank line kselftest/arm64: Supress warning and improve readability kselftest/arm64: Add parentheses around sizeof for clarity tools/testing/selftests/arm64/abi/hwcap.c | 1 - tools/testing/selftests/arm64/bti/assembler.h | 1 - tools/testing/selftests/arm64/fp/fp-ptrace.c | 1 - tools/testing/selftests/arm64/fp/fp-stress.c | 4 ++-- tools/testing/selftests/arm64/fp/sve-ptrace.c | 2 +- tools/testing/selftests/arm64/fp/vec-syscfg.c | 1 - tools/testing/selftests/arm64/fp/zt-ptrace.c | 1 - tools/testing/selftests/arm64/gcs/gcs-locking.c | 1 - 8 files changed, 3 insertions(+), 9 deletions(-) -- 2.25.1

3 weeks, 1 day

1
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[PATCH 0/3] kselftest/arm64: Cleanups and readability fixes

by vivekyadav1207731111＠gmail.com

From: Vivek Yadav <vivekyadav1207731111(a)gmail.com> Hi all, This small series makes cosmetic style cleanups in the arm64 kselftests to improve readability and suppress checkpatch warnings. These changes are purely cosmetic and do not affect functionality. Changes in this series: * Suppress unnecessary checkpatch warning in a comment * Add parentheses around sizeof for clarity * Remove redundant blank line --- Vivek Yadav (3): kselftest/arm64: Remove extra blank line kselftest/arm64: Supress warning and improve readability kselftest/arm64: Add parentheses around sizeof for clarity tools/testing/selftests/arm64/abi/hwcap.c | 1 - tools/testing/selftests/arm64/bti/assembler.h | 1 - tools/testing/selftests/arm64/fp/fp-ptrace.c | 1 - tools/testing/selftests/arm64/fp/fp-stress.c | 4 ++-- tools/testing/selftests/arm64/fp/sve-ptrace.c | 2 +- tools/testing/selftests/arm64/fp/vec-syscfg.c | 1 - tools/testing/selftests/arm64/fp/zt-ptrace.c | 1 - tools/testing/selftests/arm64/gcs/gcs-locking.c | 1 - 8 files changed, 3 insertions(+), 9 deletions(-) -- 2.25.1

3 weeks, 1 day

1
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[PATCH 0/4] selftests/mm/uffd: refactor global variables

by Ujwal Kundur

This patchset refactors non-composite global variables into a common struct that can be initialized and passed around per-test instead of relying on the presence of global variables. This allows: - Better encapsulation - Debugging becomes easier -- local variable state can be viewed per stack frame, and we can more easily reason about the variable mutations Patch 1 needs to be applied first and can be followed by any of the other patches. I've ensured that the tests are passing locally (or atleast have the same output as the code on master). Ujwal Kundur (4): selftests/mm/uffd: Refactor non-composite global vars into struct selftests/mm/uffd: Swap global vars with global test options selftests/mm/uffd: Swap global variables with global test opts selftests/mm/uffd: Swap global variables with global test opts tools/testing/selftests/mm/uffd-common.c | 269 +++++----- tools/testing/selftests/mm/uffd-common.h | 78 +-- tools/testing/selftests/mm/uffd-stress.c | 226 ++++---- tools/testing/selftests/mm/uffd-unit-tests.c | 523 ++++++++++--------- tools/testing/selftests/mm/uffd-wp-mremap.c | 23 +- 5 files changed, 591 insertions(+), 528 deletions(-) -- 2.20.1

3 weeks, 2 days

4
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Linux-kselftest-mirror August 2025