August 2025 - Linux-kselftest-mirror

[PATCH net-next] selftests: drv-net: test the napi init state

by Jakub Kicinski

Test that threaded state (in the persistent NAPI config) gets updated even when NAPI with given ID is not allocated at the time. This test is validating commit ccba9f6baa90 ("net: update NAPI threaded config even for disabled NAPIs"). Signed-off-by: Jakub Kicinski <kuba(a)kernel.org> --- Somehow I missed sending this out with the fix series. CC: joe(a)dama.to CC: shuah(a)kernel.org CC: linux-kselftest(a)vger.kernel.org --- .../selftests/drivers/net/napi_threaded.py | 31 ++++++++++++++++++- 1 file changed, 30 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/drivers/net/napi_threaded.py b/tools/testing/selftests/drivers/net/napi_threaded.py index 9699a100a87d..ed66efa481b0 100755 --- a/tools/testing/selftests/drivers/net/napi_threaded.py +++ b/tools/testing/selftests/drivers/net/napi_threaded.py @@ -38,6 +38,34 @@ from lib.py import cmd, defer, ethtool return combined +def napi_init(cfg, nl) -> None: + """ + Test that threaded state (in the persistent NAPI config) gets updated + even when NAPI with given ID is not allocated at the time. + """ + + qcnt = _setup_deferred_cleanup(cfg) + + _set_threaded_state(cfg, 1) + cmd(f"ethtool -L {cfg.ifname} combined 1") + _set_threaded_state(cfg, 0) + cmd(f"ethtool -L {cfg.ifname} combined {qcnt}") + + napis = nl.napi_get({'ifindex': cfg.ifindex}, dump=True) + for napi in napis: + ksft_eq(napi['threaded'], 'disabled') + ksft_eq(napi.get('pid'), None) + + cmd(f"ethtool -L {cfg.ifname} combined 1") + _set_threaded_state(cfg, 1) + cmd(f"ethtool -L {cfg.ifname} combined {qcnt}") + + napis = nl.napi_get({'ifindex': cfg.ifindex}, dump=True) + for napi in napis: + ksft_eq(napi['threaded'], 'enabled') + ksft_ne(napi.get('pid'), None) + + def enable_dev_threaded_disable_napi_threaded(cfg, nl) -> None: """ Test that when napi threaded is enabled at device level and @@ -103,7 +131,8 @@ from lib.py import cmd, defer, ethtool """ Ksft boiler plate main """ with NetDrvEnv(__file__, queue_count=2) as cfg: - ksft_run([change_num_queues, + ksft_run([napi_init, + change_num_queues, enable_dev_threaded_disable_napi_threaded], args=(cfg, NetdevFamily())) ksft_exit() -- 2.50.1

3 months

3
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[PATCH] proc: /proc filesystem check error message

by Mallikarjun Thammanavar

Improve /proc filesystem check error message when filesystem type is unexpected Signed-off-by: Mallikarjun Thammanavar <mallikarjunst09(a)gmail.com> --- tools/testing/selftests/proc/read.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/testing/selftests/proc/read.c b/tools/testing/selftests/proc/read.c index 35ee78dff144..c0f44ee71e79 100644 --- a/tools/testing/selftests/proc/read.c +++ b/tools/testing/selftests/proc/read.c @@ -138,7 +138,7 @@ int main(void) return 1; } if (sfs.f_type != 0x9fa0) { - fprintf(stderr, "error: unexpected f_type %lx\n", (long)sfs.f_type); + fprintf(stderr, "error: /proc is not procfs (f_type = %lx)\n", (long)sfs.f_type); return 2; } -- 2.43.0

3 months

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[Patch v4 0/2] test that 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 v3->v4: * rebase on mm-new(dd1510cefdfe) * "assert" -> "test that" in subject 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: test that rmap behave as expected MAINTAINERS | 1 + tools/testing/selftests/mm/.gitignore | 1 + tools/testing/selftests/mm/Makefile | 3 + .../selftests/mm/ksm_functional_tests.c | 142 +----- 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, 596 insertions(+), 118 deletions(-) create mode 100644 tools/testing/selftests/mm/rmap.c -- 2.34.1

3 months

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[PATCH v4 0/7] selftests/mm: Fix false positives and skip unsupported tests

by Aboorva Devarajan

Hi all, This patch series addresses false positives in the generic mm selftests and skips tests that cannot run correctly due to missing features or system limitations. v3: https://lore.kernel.org/all/20250729053403.1071807-1-aboorvad@linux.ibm.com/ Changes in v4: - Rebased onto the latest mm-new branch, top commit of the base is commit 916e1f041670 ("drivers/base: move memory_block_add_nid() into the caller"). Dropped the v3 patches that had already been merged and re-applied them to the mm-new branch. - Only Patch 4 is updated to address review comments, all other patches remain unchanged from v3. --- v2: https://lore.kernel.org/all/20250703060656.54345-1-aboorvad@linux.ibm.com/ Changes in v3: - Rebased onto the latest mm-new branch, top commit of the base is commit 0709ddf8951f ("mm: add zblock allocator"). - Minor refactor based on the review comments. - Included the tags from the previous version. --- v1: https://lore.kernel.org/all/20250616160632.35250-1-aboorvad@linux.ibm.com/ Changes in v2: - Rebased onto the mm-new branch, top commit of the base is commit 3b4a8ad89f7e ("mm: add zblock allocator"). - Split some patches for clarity. - Updated virtual_address_range test to support testing 4PB VA on PPC64. - Added proper Fixes: tags. - Included a patch to skip a failing userfaultfd test when unsupported, instead of reporting a failure. --- Please let us know if you have any further comments. Thanks, Aboorva Aboorva Devarajan (3): selftests/mm: fix child process exit codes in ksm_functional_tests selftests/mm: skip thuge-gen test if system is not setup properly selftests/mm: skip hugepage-mremap test if userfaultfd unavailable Donet Tom (4): mm/selftests: Fix incorrect pointer being passed to mark_range() selftests/mm: Add support to test 4PB VA on PPC64 selftest/mm: Fix ksm_funtional_test failures mm/selftests: Fix split_huge_page_test failure on systems with 64KB page size tools/testing/selftests/mm/cow.c | 5 ---- tools/testing/selftests/mm/hugepage-mremap.c | 16 +++++++++-- .../selftests/mm/ksm_functional_tests.c | 28 +++++++++++++------ .../selftests/mm/split_huge_page_test.c | 22 +++++++++------ tools/testing/selftests/mm/thuge-gen.c | 11 +++++--- tools/testing/selftests/mm/uffd-wp-mremap.c | 5 ---- .../selftests/mm/virtual_address_range.c | 13 ++++++++- tools/testing/selftests/mm/vm_util.h | 5 ++++ 8 files changed, 71 insertions(+), 34 deletions(-) -- 2.47.1

3 months

3
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[PATCH] kselftest/futex : fixed typo errors

by hariconscious＠gmail.com

From: HariKrishna <hariconscious(a)gmail.com> fixed typo errors in kselftest of futex module Signed-off-by: HariKrishna <hariconscious(a)gmail.com> --- .../testing/selftests/futex/functional/futex_priv_hash.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/tools/testing/selftests/futex/functional/futex_priv_hash.c b/tools/testing/selftests/futex/functional/futex_priv_hash.c index 24a92dc94eb8..bbdb63b10eef 100644 --- a/tools/testing/selftests/futex/functional/futex_priv_hash.c +++ b/tools/testing/selftests/futex/functional/futex_priv_hash.c @@ -115,7 +115,7 @@ static void usage(char *prog) { printf("Usage: %s\n", prog); printf(" -c Use color\n"); - printf(" -g Test global hash instead intead local immutable \n"); + printf(" -g Test global hash instead of local immutable \n"); printf(" -h Display this help message\n"); printf(" -v L Verbosity level: %d=QUIET %d=CRITICAL %d=INFO\n", VQUIET, VCRITICAL, VINFO); @@ -180,7 +180,7 @@ int main(int argc, char *argv[]) if (ret != 0) ksft_exit_fail_msg("pthread_join() failed: %d, %m\n", ret); - /* First thread, has to initialiaze private hash */ + /* First thread, has to initialize private hash */ futex_slots1 = futex_hash_slots_get(); if (futex_slots1 <= 0) { ksft_print_msg("Current hash buckets: %d\n", futex_slots1); @@ -235,14 +235,14 @@ int main(int argc, char *argv[]) ksft_test_result(counter == MAX_THREADS, "Created of waited for %d of %d threads\n", counter, MAX_THREADS); counter = 0; - /* Once the user set something, auto reisze must be disabled */ + /* Once the user set something, auto resize must be disabled */ ret = pthread_barrier_init(&barrier_main, NULL, MAX_THREADS); create_max_threads(thread_lock_fn); join_max_threads(); ret = futex_hash_slots_get(); - ksft_test_result(ret == 2, "No more auto-resize after manaul setting, got %d\n", + ksft_test_result(ret == 2, "No more auto-resize after manual setting, got %d\n", ret); futex_hash_slots_set_must_fail(1 << 29, 0); -- 2.43.0

3 months

2
1
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[PATCH][next] selftests/futex: Fix help test for option -g

by Colin Ian King

Currently the help text for the -g option contains a spelling mistake, a space before a \n and is a little hard to comprehend. Fix it. Fixes: cda95faef7bc ("selftests/futex: Add futex_priv_hash") Signed-off-by: Colin Ian King <colin.i.king(a)gmail.com> --- tools/testing/selftests/futex/functional/futex_priv_hash.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/testing/selftests/futex/functional/futex_priv_hash.c b/tools/testing/selftests/futex/functional/futex_priv_hash.c index aea001ac4946..93c636d6bf80 100644 --- a/tools/testing/selftests/futex/functional/futex_priv_hash.c +++ b/tools/testing/selftests/futex/functional/futex_priv_hash.c @@ -132,7 +132,7 @@ static void usage(char *prog) { printf("Usage: %s\n", prog); printf(" -c Use color\n"); - printf(" -g Test global hash instead intead local immutable \n"); + printf(" -g Test global hash instead of private hash\n"); printf(" -h Display this help message\n"); printf(" -v L Verbosity level: %d=QUIET %d=CRITICAL %d=INFO\n", VQUIET, VCRITICAL, VINFO); -- 2.50.1

3 months

2
1
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[PATCH v2] selftests:ftrace:Improved event description

by Mehdi Ben Hadj Khelifa

-Changed pid to PID to make it more clear -Changed 'restricts' to 'restrict' instead to align with imperative form Signed-off-by: Mehdi Ben Hadj Khelifa <mehdi.benhadjkhelifa(a)gmail.com> --- Changelog: Changes since v1: - Changed patch title to align with conventions. - Reverted a typo in event/event-pid.tc "Event tracing" => "event tracing" - Changed patch development to 6.17-rc2 from 6.16-rc7 tools/testing/selftests/ftrace/test.d/event/event-no-pid.tc | 2 +- tools/testing/selftests/ftrace/test.d/event/event-pid.tc | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/tools/testing/selftests/ftrace/test.d/event/event-no-pid.tc b/tools/testing/selftests/ftrace/test.d/event/event-no-pid.tc index 9933ed24f901..aa83be738e69 100644 --- a/tools/testing/selftests/ftrace/test.d/event/event-no-pid.tc +++ b/tools/testing/selftests/ftrace/test.d/event/event-no-pid.tc @@ -1,6 +1,6 @@ #!/bin/sh # SPDX-License-Identifier: GPL-2.0 -# description: event tracing - restricts events based on pid notrace filtering +# description: event tracing - restrict events based on PID notrace filtering # requires: set_event events/sched set_event_pid set_event_notrace_pid # flags: instance diff --git a/tools/testing/selftests/ftrace/test.d/event/event-pid.tc b/tools/testing/selftests/ftrace/test.d/event/event-pid.tc index 7f5f97dffdc3..90ba7c794062 100644 --- a/tools/testing/selftests/ftrace/test.d/event/event-pid.tc +++ b/tools/testing/selftests/ftrace/test.d/event/event-pid.tc @@ -1,6 +1,6 @@ #!/bin/sh # SPDX-License-Identifier: GPL-2.0 -# description: event tracing - restricts events based on pid +# description: event tracing - restrict events based on PID # requires: set_event set_event_pid events/sched # flags: instance -- 2.50.1

3 months

1
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[PATCH 0/3] selftests/nolibc: enable qemu-system tests with LLVM builds

by Thomas Weißschuh

Currently the test setup does not support running nolibc-test built with LLVM in qemu-system. Enable this. FYI, sparc32 on LLVM seems to be broken at the moment. To me this looks like a LLVM regression, emitting invalid object code. Signed-off-by: Thomas Weißschuh <linux(a)weissschuh.net> --- Thomas Weißschuh (3): selftests/nolibc: deduplicate invocations of toplevel Makefile selftests/nolibc: don't pass CC to toplevel Makefile selftests/nolibc: always compile the kernel with GCC tools/testing/selftests/nolibc/Makefile.nolibc | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-) --- base-commit: b9e50363178a40c76bebaf2f00faa2b0b6baf8d1 change-id: 20250719-nolibc-llvm-system-311762b62829 Best regards, -- Thomas Weißschuh <linux(a)weissschuh.net>

3 months

2
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[PATCH] selftests/fs/mount-notify: Fix typo memebers -> members

by Xing Guo

I reviewed these 2 tests and found there's a typo. Signed-off-by: Xing Guo <higuoxing(a)gmail.com> --- .../selftests/filesystems/mount-notify/mount-notify_test.c | 2 +- .../selftests/filesystems/mount-notify/mount-notify_test_ns.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/tools/testing/selftests/filesystems/mount-notify/mount-notify_test.c b/tools/testing/selftests/filesystems/mount-notify/mount-notify_test.c index 63ce708d93ed..18147594d619 100644 --- a/tools/testing/selftests/filesystems/mount-notify/mount-notify_test.c +++ b/tools/testing/selftests/filesystems/mount-notify/mount-notify_test.c @@ -208,7 +208,7 @@ static void verify_mount_ids(struct __test_metadata *const _metadata, } } } - // Check that all list1 memebers can be found in list2. Together with + // Check that all list1 members can be found in list2. Together with // the above it means that the list1 and list2 represent the same sets. for (i = 0; i < num; i++) { for (j = 0; j < num; j++) { diff --git a/tools/testing/selftests/filesystems/mount-notify/mount-notify_test_ns.c b/tools/testing/selftests/filesystems/mount-notify/mount-notify_test_ns.c index 090a5ca65004..67c05bbc5e45 100644 --- a/tools/testing/selftests/filesystems/mount-notify/mount-notify_test_ns.c +++ b/tools/testing/selftests/filesystems/mount-notify/mount-notify_test_ns.c @@ -236,7 +236,7 @@ static void verify_mount_ids(struct __test_metadata *const _metadata, } } } - // Check that all list1 memebers can be found in list2. Together with + // Check that all list1 members can be found in list2. Together with // the above it means that the list1 and list2 represent the same sets. for (i = 0; i < num; i++) { for (j = 0; j < num; j++) { -- 2.50.1

3 months

1
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[PATCH] selftests net/socket.c: removed warnings from unused returns

by Alex Tran

socket.c: In function ‘run_tests’: socket.c:59:25: warning: ignoring return value of ‘strerror_r’ declared with attribute ‘warn_unused_result’ [-Wunused-result] 59 | strerror_r(-s->expect, err_string1, ERR_STRING_SZ); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ socket.c:60:25: warning: ignoring return value of ‘strerror_r’ declared with attribute ‘warn_unused_result’ [-Wunused-result] 60 | strerror_r(errno, err_string2, ERR_STRING_SZ); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ socket.c:73:33: warning: ignoring return value of ‘strerror_r’ declared with attribute ‘warn_unused_result’ [-Wunused-result] 73 | strerror_r(errno, err_string1, ERR_STRING_SZ); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Signed-off-by: Alex Tran <alex.t.tran(a)gmail.com> --- tools/testing/selftests/net/socket.c | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) diff --git a/tools/testing/selftests/net/socket.c b/tools/testing/selftests/net/socket.c index db1aeb8c5d1e..7c597c583df3 100644 --- a/tools/testing/selftests/net/socket.c +++ b/tools/testing/selftests/net/socket.c @@ -39,6 +39,8 @@ static int run_tests(void) { char err_string1[ERR_STRING_SZ]; char err_string2[ERR_STRING_SZ]; + char *err_message1; + char *err_message2; int i, err; err = 0; @@ -56,13 +58,13 @@ static int run_tests(void) errno == -s->expect) continue; - strerror_r(-s->expect, err_string1, ERR_STRING_SZ); - strerror_r(errno, err_string2, ERR_STRING_SZ); + err_message1 = strerror_r(-s->expect, err_string1, ERR_STRING_SZ); + err_message2 = strerror_r(errno, err_string2, ERR_STRING_SZ); fprintf(stderr, "socket(%d, %d, %d) expected " "err (%s) got (%s)\n", s->domain, s->type, s->protocol, - err_string1, err_string2); + err_message1, err_message2); err = -1; break; @@ -70,12 +72,12 @@ static int run_tests(void) close(fd); if (s->expect < 0) { - strerror_r(errno, err_string1, ERR_STRING_SZ); + err_message1 = strerror_r(errno, err_string1, ERR_STRING_SZ); fprintf(stderr, "socket(%d, %d, %d) expected " "success got err (%s)\n", s->domain, s->type, s->protocol, - err_string1); + err_message1); err = -1; break; -- 2.34.1

3 months

2
2
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Linux-kselftest-mirror August 2025