June 2021 - Linux-kselftest-mirror

[PATCH] selftests: net: veth: make test compatible with dash

by Andrea Righi

veth.sh is a shell script that uses /bin/sh; some distro (Ubuntu for example) use dash as /bin/sh and in this case the test reports the following error: # ./veth.sh: 21: local: -r: bad variable name # ./veth.sh: 21: local: -r: bad variable name This happens because dash doesn't support the option "-r" with local. Moreover, in case of missing bpf object, the script is exiting -1, that is an illegal number for dash: exit: Illegal number: -1 Change the script to be compatible both with bash and dash and prevent the errors above. Signed-off-by: Andrea Righi <andrea.righi(a)canonical.com> --- tools/testing/selftests/net/veth.sh | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/tools/testing/selftests/net/veth.sh b/tools/testing/selftests/net/veth.sh index 2fedc0781ce8..11d7cdb898c0 100755 --- a/tools/testing/selftests/net/veth.sh +++ b/tools/testing/selftests/net/veth.sh @@ -18,7 +18,8 @@ ret=0 cleanup() { local ns - local -r jobs="$(jobs -p)" + local jobs + readonly jobs="$(jobs -p)" [ -n "${jobs}" ] && kill -1 ${jobs} 2>/dev/null rm -f $STATS @@ -108,7 +109,7 @@ chk_gro() { if [ ! -f ../bpf/xdp_dummy.o ]; then echo "Missing xdp_dummy helper. Build bpf selftest first" - exit -1 + exit 1 fi create_ns -- 2.31.1

3 years, 6 months

2
1
0 0

[PATCH v2 01/10] kunit: Do not typecheck binary assertions

by David Gow

The use of typecheck() in KUNIT_EXPECT_EQ() and friends is causing more problems than I think it's worth. Things like enums need to have their values explicitly cast, and literals all need to be very precisely typed, else a large warning will be printed. While typechecking does have its uses, the additional overhead of having lots of needless casts -- combined with the awkward error messages which don't mention which types are involved -- makes tests less readable and more difficult to write. By removing the typecheck() call, the two arguments still need to be of compatible types, but don't need to be of exactly the same time, which seems a less confusing and more useful compromise. Signed-off-by: David Gow <davidgow(a)google.com> Reviewed-by: Daniel Latypov <dlatypov(a)google.com> Reviewed-by: Brendan Higgins <brendanhiggins(a)google.com> --- Changes since v1: https://lore.kernel.org/linux-kselftest/20210507050908.1008686-1-davidgow@g… - Tidy up the patch description to note that a warning was being produced, not an error. - Add additional patches to remove many of the now unnecessary casts. include/kunit/test.h | 1 - 1 file changed, 1 deletion(-) diff --git a/include/kunit/test.h b/include/kunit/test.h index 49601c4b98b8..4c56ffcb7403 100644 --- a/include/kunit/test.h +++ b/include/kunit/test.h @@ -775,7 +775,6 @@ void kunit_do_assertion(struct kunit *test, do { \ typeof(left) __left = (left); \ typeof(right) __right = (right); \ - ((void)__typecheck(__left, __right)); \ \ KUNIT_ASSERTION(test, \ __left op __right, \ -- 2.31.1.751.gd2f1c929bd-goog

3 years, 6 months

11
28
0 0

[PATCH 00/34] docs: avoid using ReST :doc:`foo` tag

by Mauro Carvalho Chehab

As discussed at: https://lore.kernel.org/linux-doc/871r9k6rmy.fsf@meer.lwn.net/ It is better to avoid using :doc:`foo` to refer to Documentation/foo.rst, as the automarkup.py extension should handle it automatically, on most cases. There are a couple of exceptions to this rule: 1. when :doc: tag is used to point to a kernel-doc DOC: markup; 2. when it is used with a named tag, e. g. :doc:`some name <foo>`; It should also be noticed that automarkup.py has currently an issue: if one use a markup like: Documentation/dev-tools/kunit/api/test.rst - documents all of the standard testing API excluding mocking or mocking related features. or, even: Documentation/dev-tools/kunit/api/test.rst documents all of the standard testing API excluding mocking or mocking related features. The automarkup.py will simply ignore it. Not sure why. This patch series avoid the above patterns (which is present only on 4 files), but it would be nice to have a followup patch fixing the issue at automarkup.py. On this series: Patch 1 manually adjust the references inside driver-api/pm/devices.rst, as there it uses :file:`foo` to refer to some Documentation/ files; Patch 2 converts a table at Documentation/dev-tools/kunit/api/index.rst into a list, carefully avoiding the Patch 3 converts the cross-references at the media documentation, also avoiding the automarkup.py bug; Patches 4-34 convert the other occurrences via a replace script. They were manually edited, in order to honour 80-columns where possible. I did a diff between the Sphinx 2.4.4 output before and after this patch series in order to double-check that all converted Documentation/ references will produce <a href=<foo>.rst>foo title</a> tags. Mauro Carvalho Chehab (34): docs: devices.rst: better reference documentation docs docs: dev-tools: kunit: don't use a table for docs name media: docs: */media/index.rst: don't use ReST doc:`foo` media: userspace-api: avoid using ReST :doc:`foo` markup media: driver-api: drivers: avoid using ReST :doc:`foo` markup media: admin-guide: avoid using ReST :doc:`foo` markup docs: admin-guide: pm: avoid using ReSt :doc:`foo` markup docs: admin-guide: hw-vuln: avoid using ReST :doc:`foo` markup docs: admin-guide: sysctl: avoid using ReST :doc:`foo` markup docs: block: biodoc.rst: avoid using ReSt :doc:`foo` markup docs: bpf: bpf_lsm.rst: avoid using ReSt :doc:`foo` markup docs: core-api: avoid using ReSt :doc:`foo` markup docs: dev-tools: testing-overview.rst: avoid using ReSt :doc:`foo` markup docs: dev-tools: kunit: avoid using ReST :doc:`foo` markup docs: devicetree: bindings: submitting-patches.rst: avoid using ReSt :doc:`foo` markup docs: doc-guide: avoid using ReSt :doc:`foo` markup docs: driver-api: avoid using ReSt :doc:`foo` markup docs: driver-api: gpio: using-gpio.rst: avoid using ReSt :doc:`foo` markup docs: driver-api: surface_aggregator: avoid using ReSt :doc:`foo` markup docs: driver-api: usb: avoid using ReSt :doc:`foo` markup docs: firmware-guide: acpi: avoid using ReSt :doc:`foo` markup docs: hwmon: adm1177.rst: avoid using ReSt :doc:`foo` markup docs: i2c: avoid using ReSt :doc:`foo` markup docs: kernel-hacking: hacking.rst: avoid using ReSt :doc:`foo` markup docs: networking: devlink: avoid using ReSt :doc:`foo` markup docs: PCI: endpoint: pci-endpoint-cfs.rst: avoid using ReSt :doc:`foo` markup docs: PCI: pci.rst: avoid using ReSt :doc:`foo` markup docs: process: submitting-patches.rst: avoid using ReSt :doc:`foo` markup docs: security: landlock.rst: avoid using ReSt :doc:`foo` markup docs: trace: coresight: coresight.rst: avoid using ReSt :doc:`foo` markup docs: trace: ftrace.rst: avoid using ReSt :doc:`foo` markup docs: userspace-api: landlock.rst: avoid using ReSt :doc:`foo` markup docs: virt: kvm: s390-pv-boot.rst: avoid using ReSt :doc:`foo` markup docs: x86: avoid using ReSt :doc:`foo` markup .../PCI/endpoint/pci-endpoint-cfs.rst | 2 +- Documentation/PCI/pci.rst | 6 +-- .../special-register-buffer-data-sampling.rst | 3 +- Documentation/admin-guide/media/bt8xx.rst | 15 ++++---- Documentation/admin-guide/media/bttv.rst | 21 ++++++----- Documentation/admin-guide/media/index.rst | 12 +++--- Documentation/admin-guide/media/saa7134.rst | 3 +- Documentation/admin-guide/pm/intel_idle.rst | 16 +++++--- Documentation/admin-guide/pm/intel_pstate.rst | 9 +++-- Documentation/admin-guide/sysctl/abi.rst | 2 +- Documentation/admin-guide/sysctl/kernel.rst | 37 ++++++++++--------- Documentation/block/biodoc.rst | 2 +- Documentation/bpf/bpf_lsm.rst | 13 ++++--- .../core-api/bus-virt-phys-mapping.rst | 2 +- Documentation/core-api/dma-api.rst | 5 ++- Documentation/core-api/dma-isa-lpc.rst | 2 +- Documentation/core-api/index.rst | 4 +- Documentation/dev-tools/kunit/api/index.rst | 8 ++-- Documentation/dev-tools/kunit/faq.rst | 2 +- Documentation/dev-tools/kunit/index.rst | 14 +++---- Documentation/dev-tools/kunit/start.rst | 6 +-- Documentation/dev-tools/kunit/tips.rst | 5 ++- Documentation/dev-tools/kunit/usage.rst | 8 ++-- Documentation/dev-tools/testing-overview.rst | 16 ++++---- .../bindings/submitting-patches.rst | 11 +++--- Documentation/doc-guide/contributing.rst | 8 ++-- Documentation/driver-api/gpio/using-gpio.rst | 4 +- Documentation/driver-api/ioctl.rst | 2 +- .../driver-api/media/drivers/bttv-devel.rst | 2 +- Documentation/driver-api/media/index.rst | 10 +++-- Documentation/driver-api/pm/devices.rst | 8 ++-- .../surface_aggregator/clients/index.rst | 3 +- .../surface_aggregator/internal.rst | 15 ++++---- .../surface_aggregator/overview.rst | 6 ++- Documentation/driver-api/usb/dma.rst | 6 +-- .../acpi/dsd/data-node-references.rst | 3 +- .../firmware-guide/acpi/dsd/graph.rst | 2 +- .../firmware-guide/acpi/enumeration.rst | 7 ++-- Documentation/hwmon/adm1177.rst | 3 +- Documentation/i2c/instantiating-devices.rst | 2 +- Documentation/i2c/old-module-parameters.rst | 3 +- Documentation/i2c/smbus-protocol.rst | 4 +- Documentation/kernel-hacking/hacking.rst | 4 +- .../networking/devlink/devlink-region.rst | 2 +- .../networking/devlink/devlink-trap.rst | 4 +- Documentation/process/submitting-patches.rst | 32 ++++++++-------- Documentation/security/landlock.rst | 3 +- Documentation/trace/coresight/coresight.rst | 8 ++-- Documentation/trace/ftrace.rst | 2 +- Documentation/userspace-api/landlock.rst | 11 +++--- .../userspace-api/media/glossary.rst | 2 +- Documentation/userspace-api/media/index.rst | 12 +++--- Documentation/virt/kvm/s390-pv-boot.rst | 2 +- Documentation/x86/boot.rst | 4 +- Documentation/x86/mtrr.rst | 2 +- 55 files changed, 217 insertions(+), 183 deletions(-) -- 2.31.1

3 years, 6 months

4
16
0 0

[PATCH] kunit: Add gnu_printf specifiers

by David Gow

Some KUnit functions use variable arguments to implement a printf-like format string. Use the __printf() attribute to let the compiler warn if invalid format strings are passed in. If the kernel is build with W=1, it complained about the lack of these specifiers, e.g.: ../lib/kunit/test.c:72:2: warning: function ‘kunit_log_append’ might be a candidate for ‘gnu_printf’ format attribute [-Wsuggest-attribute=format] Signed-off-by: David Gow <davidgow(a)google.com> --- include/kunit/test.h | 2 +- lib/kunit/string-stream.h | 6 +++--- 2 files changed, 4 insertions(+), 4 deletions(-) diff --git a/include/kunit/test.h b/include/kunit/test.h index 49601c4b98b8..af2e386b867c 100644 --- a/include/kunit/test.h +++ b/include/kunit/test.h @@ -610,7 +610,7 @@ static inline void *kunit_kzalloc(struct kunit *test, size_t size, gfp_t gfp) void kunit_cleanup(struct kunit *test); -void kunit_log_append(char *log, const char *fmt, ...); +void __printf(2, 3) kunit_log_append(char *log, const char *fmt, ...); /* * printk and log to per-test or per-suite log buffer. Logging only done diff --git a/lib/kunit/string-stream.h b/lib/kunit/string-stream.h index fe98a00b75a9..5e94b623454f 100644 --- a/lib/kunit/string-stream.h +++ b/lib/kunit/string-stream.h @@ -35,9 +35,9 @@ struct string_stream *alloc_string_stream(struct kunit *test, gfp_t gfp); int __printf(2, 3) string_stream_add(struct string_stream *stream, const char *fmt, ...); -int string_stream_vadd(struct string_stream *stream, - const char *fmt, - va_list args); +int __printf(2, 0) string_stream_vadd(struct string_stream *stream, + const char *fmt, + va_list args); char *string_stream_get_string(struct string_stream *stream); -- 2.31.1.751.gd2f1c929bd-goog

3 years, 6 months

3
4
0 0

[PATCH v3 0/1] lib: Convert UUID runtime test to KUnit

by André Almeida

Hi, This patch converts existing UUID runtime test to use KUnit framework. Below, there's a comparison between the old output format and the new one. Keep in mind that even if KUnit seems very verbose, this is the corner case where _every_ test has failed. * This is how the current output looks like in success: test_uuid: all 18 tests passed * And when it fails: test_uuid: conversion test #1 failed on LE data: 'c33f4995-3701-450e-9fbf-206a2e98e576' test_uuid: cmp test #2 failed on LE data: 'c33f4995-3701-450e-9fbf-206a2e98e576' test_uuid: cmp test #2 actual data: 'c33f4995-3701-450e-9fbf-206a2e98e576' test_uuid: conversion test #3 failed on BE data: 'c33f4995-3701-450e-9fbf-206a2e98e576' test_uuid: cmp test #4 failed on BE data: 'c33f4995-3701-450e-9fbf-206a2e98e576' test_uuid: cmp test #4 actual data: 'c33f4995-3701-450e-9fbf-206a2e98e576' test_uuid: conversion test #5 failed on LE data: '64b4371c-77c1-48f9-8221-29f054fc023b' test_uuid: cmp test #6 failed on LE data: '64b4371c-77c1-48f9-8221-29f054fc023b' test_uuid: cmp test #6 actual data: '64b4371c-77c1-48f9-8221-29f054fc023b' test_uuid: conversion test #7 failed on BE data: '64b4371c-77c1-48f9-8221-29f054fc023b' test_uuid: cmp test #8 failed on BE data: '64b4371c-77c1-48f9-8221-29f054fc023b' test_uuid: cmp test #8 actual data: '64b4371c-77c1-48f9-8221-29f054fc023b' test_uuid: conversion test #9 failed on LE data: '0cb4ddff-a545-4401-9d06-688af53e7f84' test_uuid: cmp test #10 failed on LE data: '0cb4ddff-a545-4401-9d06-688af53e7f84' test_uuid: cmp test #10 actual data: '0cb4ddff-a545-4401-9d06-688af53e7f84' test_uuid: conversion test #11 failed on BE data: '0cb4ddff-a545-4401-9d06-688af53e7f84' test_uuid: cmp test #12 failed on BE data: '0cb4ddff-a545-4401-9d06-688af53e7f84' test_uuid: cmp test #12 actual data: '0cb4ddff-a545-4401-9d06-688af53e7f84' test_uuid: negative test #13 passed on wrong LE data: 'c33f4995-3701-450e-9fbf206a2e98e576 ' test_uuid: negative test #14 passed on wrong BE data: 'c33f4995-3701-450e-9fbf206a2e98e576 ' test_uuid: negative test #15 passed on wrong LE data: '64b4371c-77c1-48f9-8221-29f054XX023b' test_uuid: negative test #16 passed on wrong BE data: '64b4371c-77c1-48f9-8221-29f054XX023b' test_uuid: negative test #17 passed on wrong LE data: '0cb4ddff-a545-4401-9d06-688af53e' test_uuid: negative test #18 passed on wrong BE data: '0cb4ddff-a545-4401-9d06-688af53e' test_uuid: failed 18 out of 18 tests * Now, here's how it looks like with KUnit: ======== [PASSED] uuid ======== [PASSED] uuid_correct_be [PASSED] uuid_correct_le [PASSED] uuid_wrong_be [PASSED] uuid_wrong_le * And if every test fail with KUnit: ======== [FAILED] uuid ======== [FAILED] uuid_correct_be # uuid_correct_be: ASSERTION FAILED at lib/test_uuid.c:57 Expected uuid_parse(data->uuid, &be) == 1, but uuid_parse(data->uuid, &be) == 0 failed to parse 'c33f4995-3701-450e-9fbf-206a2e98e576' # uuid_correct_be: not ok 1 - c33f4995-3701-450e-9fbf-206a2e98e576 # uuid_correct_be: ASSERTION FAILED at lib/test_uuid.c:57 Expected uuid_parse(data->uuid, &be) == 1, but uuid_parse(data->uuid, &be) == 0 failed to parse '64b4371c-77c1-48f9-8221-29f054fc023b' # uuid_correct_be: not ok 2 - 64b4371c-77c1-48f9-8221-29f054fc023b # uuid_correct_be: ASSERTION FAILED at lib/test_uuid.c:57 Expected uuid_parse(data->uuid, &be) == 1, but uuid_parse(data->uuid, &be) == 0 failed to parse '0cb4ddff-a545-4401-9d06-688af53e7f84' # uuid_correct_be: not ok 3 - 0cb4ddff-a545-4401-9d06-688af53e7f84 not ok 1 - uuid_correct_be [FAILED] uuid_correct_le # uuid_correct_le: ASSERTION FAILED at lib/test_uuid.c:46 Expected guid_parse(data->uuid, &le) == 1, but guid_parse(data->uuid, &le) == 0 failed to parse 'c33f4995-3701-450e-9fbf-206a2e98e576' # uuid_correct_le: not ok 1 - c33f4995-3701-450e-9fbf-206a2e98e576 # uuid_correct_le: ASSERTION FAILED at lib/test_uuid.c:46 Expected guid_parse(data->uuid, &le) == 1, but guid_parse(data->uuid, &le) == 0 failed to parse '64b4371c-77c1-48f9-8221-29f054fc023b' # uuid_correct_le: not ok 2 - 64b4371c-77c1-48f9-8221-29f054fc023b # uuid_correct_le: ASSERTION FAILED at lib/test_uuid.c:46 Expected guid_parse(data->uuid, &le) == 1, but guid_parse(data->uuid, &le) == 0 failed to parse '0cb4ddff-a545-4401-9d06-688af53e7f84' # uuid_correct_le: not ok 3 - 0cb4ddff-a545-4401-9d06-688af53e7f84 not ok 2 - uuid_correct_le [FAILED] uuid_wrong_be # uuid_wrong_be: ASSERTION FAILED at lib/test_uuid.c:77 Expected uuid_parse(*data, &be) == 0, but uuid_parse(*data, &be) == -22 parsing of 'c33f4995-3701-450e-9fbf206a2e98e576 ' should've failed # uuid_wrong_be: not ok 1 - c33f4995-3701-450e-9fbf206a2e98e576 # uuid_wrong_be: ASSERTION FAILED at lib/test_uuid.c:77 Expected uuid_parse(*data, &be) == 0, but uuid_parse(*data, &be) == -22 parsing of '64b4371c-77c1-48f9-8221-29f054XX023b' should've failed # uuid_wrong_be: not ok 2 - 64b4371c-77c1-48f9-8221-29f054XX023b # uuid_wrong_be: ASSERTION FAILED at lib/test_uuid.c:77 Expected uuid_parse(*data, &be) == 0, but uuid_parse(*data, &be) == -22 parsing of '0cb4ddff-a545-4401-9d06-688af53e' should've failed # uuid_wrong_be: not ok 3 - 0cb4ddff-a545-4401-9d06-688af53e not ok 3 - uuid_wrong_be [FAILED] uuid_wrong_le # uuid_wrong_le: ASSERTION FAILED at lib/test_uuid.c:68 Expected guid_parse(*data, &le) == 0, but guid_parse(*data, &le) == -22 parsing of 'c33f4995-3701-450e-9fbf206a2e98e576 ' should've failed # uuid_wrong_le: not ok 1 - c33f4995-3701-450e-9fbf206a2e98e576 # uuid_wrong_le: ASSERTION FAILED at lib/test_uuid.c:68 Expected guid_parse(*data, &le) == 0, but guid_parse(*data, &le) == -22 parsing of '64b4371c-77c1-48f9-8221-29f054XX023b' should've failed # uuid_wrong_le: not ok 2 - 64b4371c-77c1-48f9-8221-29f054XX023b # uuid_wrong_le: ASSERTION FAILED at lib/test_uuid.c:68 Expected guid_parse(*data, &le) == 0, but guid_parse(*data, &le) == -22 parsing of '0cb4ddff-a545-4401-9d06-688af53e' should've failed # uuid_wrong_le: not ok 3 - 0cb4ddff-a545-4401-9d06-688af53e not ok 4 - uuid_wrong_le Changes from v2: - Clarify in commit message the new test cases setup v2: https://lore.kernel.org/lkml/20210609233730.164082-1-andrealmeid@collabora.… Changes from v1: - Test suite name: uuid_test -> uuid - Config name: TEST_UUID -> UUID_KUNIT_TEST - Config entry in the Kconfig file left where it is - Converted tests to use _MSG variant v1: https://lore.kernel.org/lkml/20210605215215.171165-1-andrealmeid@collabora.… André Almeida (1): lib: Convert UUID runtime test to KUnit lib/Kconfig.debug | 11 +++- lib/Makefile | 2 +- lib/test_uuid.c | 137 +++++++++++++++++++--------------------------- 3 files changed, 67 insertions(+), 83 deletions(-) -- 2.31.1

3 years, 6 months

4
6
0 0

[PATCH v7 0/4] KVM statistics data fd-based binary interface

by Jing Zhang

This patchset provides a file descriptor for every VM and VCPU to read KVM statistics data in binary format. It is meant to provide a lightweight, flexible, scalable and efficient lock-free solution for user space telemetry applications to pull the statistics data periodically for large scale systems. The pulling frequency could be as high as a few times per second. In this patchset, every statistics data are treated to have some attributes as below: * architecture dependent or generic * VM statistics data or VCPU statistics data * type: cumulative, instantaneous, * unit: none for simple counter, nanosecond, microsecond, millisecond, second, Byte, KiByte, MiByte, GiByte. Clock Cycles Since no lock/synchronization is used, the consistency between all the statistics data is not guaranteed. That means not all statistics data are read out at the exact same time, since the statistics date are still being updated by KVM subsystems while they are read out. --- * v6 -> v7 - Improve file descriptor allocation function by Krish suggestion - Use "generic stats" instead of "common stats" as Krish suggested - Addressed some other nits from Krish and David Matlack * v5 -> v6 - Use designated initializers for STATS_DESC - Change KVM_STATS_SCALE... to KVM_STATS_BASE... - Use a common function for kvm_[vm|vcpu]_stats_read - Fix some documentation errors/missings - Use TEST_ASSERT in selftest - Use a common function for [vm|vcpu]_stats_test in selftest * v4 -> v5 - Rebase to kvm/queue, commit a4345a7cecfb ("Merge tag 'kvmarm-fixes-5.13-1'") - Change maximum stats name length to 48 - Replace VM_STATS_COMMON/VCPU_STATS_COMMON macros with stats descriptor definition macros. - Fixed some errors/warnings reported by checkpatch.pl * v3 -> v4 - Rebase to kvm/queue, commit 9f242010c3b4 ("KVM: avoid "deadlock" between install_new_memslots and MMU notifier") - Use C-stype comments in the whole patch - Fix wrong count for x86 VCPU stats descriptors - Fix KVM stats data size counting and validity check in selftest * v2 -> v3 - Rebase to kvm/queue, commit edf408f5257b ("KVM: avoid "deadlock" between install_new_memslots and MMU notifier") - Resolve some nitpicks about format * v1 -> v2 - Use ARRAY_SIZE to count the number of stats descriptors - Fix missing `size` field initialization in macro STATS_DESC [1] https://lore.kernel.org/kvm/20210402224359.2297157-1-jingzhangos@google.com [2] https://lore.kernel.org/kvm/20210415151741.1607806-1-jingzhangos@google.com [3] https://lore.kernel.org/kvm/20210423181727.596466-1-jingzhangos@google.com [4] https://lore.kernel.org/kvm/20210429203740.1935629-1-jingzhangos@google.com [5] https://lore.kernel.org/kvm/20210517145314.157626-1-jingzhangos@google.com [6] https://lore.kernel.org/kvm/20210524151828.4113777-1-jingzhangos@google.com --- Jing Zhang (4): KVM: stats: Separate generic stats from architecture specific ones KVM: stats: Add fd-based API to read binary stats data KVM: stats: Add documentation for statistics data binary interface KVM: selftests: Add selftest for KVM statistics data binary interface Documentation/virt/kvm/api.rst | 180 +++++++++++++++ arch/arm64/include/asm/kvm_host.h | 9 +- arch/arm64/kvm/guest.c | 38 +++- arch/mips/include/asm/kvm_host.h | 9 +- arch/mips/kvm/mips.c | 64 +++++- arch/powerpc/include/asm/kvm_host.h | 9 +- arch/powerpc/kvm/book3s.c | 64 +++++- arch/powerpc/kvm/book3s_hv.c | 12 +- arch/powerpc/kvm/book3s_pr.c | 2 +- arch/powerpc/kvm/book3s_pr_papr.c | 2 +- arch/powerpc/kvm/booke.c | 59 ++++- arch/s390/include/asm/kvm_host.h | 9 +- arch/s390/kvm/kvm-s390.c | 129 ++++++++++- arch/x86/include/asm/kvm_host.h | 9 +- arch/x86/kvm/x86.c | 67 +++++- include/linux/kvm_host.h | 141 +++++++++++- include/linux/kvm_types.h | 12 + include/uapi/linux/kvm.h | 50 ++++ tools/testing/selftests/kvm/.gitignore | 1 + tools/testing/selftests/kvm/Makefile | 3 + .../testing/selftests/kvm/include/kvm_util.h | 3 + .../selftests/kvm/kvm_binary_stats_test.c | 215 ++++++++++++++++++ tools/testing/selftests/kvm/lib/kvm_util.c | 12 + virt/kvm/kvm_main.c | 169 +++++++++++++- 24 files changed, 1178 insertions(+), 90 deletions(-) create mode 100644 tools/testing/selftests/kvm/kvm_binary_stats_test.c base-commit: a4345a7cecfb91ae78cd43d26b0c6a956420761a -- 2.32.0.rc1.229.g3e70b5a671-goog

3 years, 6 months

5
31
0 0

[PATCH net-next v2 4/7] testing: selftests: drivers: net: netdevsim: devlink: add test case for hard drop statistics

by Oleksandr Mazur

Add hard drop counter check testcase, to make sure netdevsim driver properly handles the devlink hard drop counters get/set callbacks. Signed-off-by: Oleksandr Mazur <oleksandr.mazur(a)plvision.eu> --- .../selftests/drivers/net/netdevsim/devlink_trap.sh | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/tools/testing/selftests/drivers/net/netdevsim/devlink_trap.sh b/tools/testing/selftests/drivers/net/netdevsim/devlink_trap.sh index 6165901a1cf3..109900c817be 100755 --- a/tools/testing/selftests/drivers/net/netdevsim/devlink_trap.sh +++ b/tools/testing/selftests/drivers/net/netdevsim/devlink_trap.sh @@ -165,6 +165,16 @@ trap_stats_test() devlink_trap_action_set $trap_name "drop" devlink_trap_stats_idle_test $trap_name check_err $? "Stats of trap $trap_name not idle when action is drop" + + echo "y"> $DEBUGFS_DIR/fail_trap_drop_counter_get + devlink -s trap show $DEVLINK_DEV trap $trap_name &> /dev/null + check_fail $? "Managed to read trap (hard dropped) statistics when should not" + echo "n"> $DEBUGFS_DIR/fail_trap_drop_counter_get + devlink -s trap show $DEVLINK_DEV trap $trap_name &> /dev/null + check_err $? "Did not manage to read trap (hard dropped) statistics when should" + + devlink_trap_drop_stats_idle_test $trap_name + check_fail $? "Drop stats of trap $trap_name idle when should not" else devlink_trap_stats_idle_test $trap_name check_fail $? "Stats of non-drop trap $trap_name idle when should not" -- 2.17.1

3 years, 6 months

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[PATCH net-next v2 2/7] testing: selftests: net: forwarding: add devlink-required functionality to test (hard) dropped stats field

by Oleksandr Mazur

Add devlink_trap_drop_packets_get function, as well as test that are used to verify devlink (hard) dropped stats functionality works. Signed-off-by: Oleksandr Mazur <oleksandr.mazur(a)plvision.eu> --- .../selftests/net/forwarding/devlink_lib.sh | 26 +++++++++++++++++++ 1 file changed, 26 insertions(+) diff --git a/tools/testing/selftests/net/forwarding/devlink_lib.sh b/tools/testing/selftests/net/forwarding/devlink_lib.sh index 39fb9b8e7b58..13d3d4428a32 100644 --- a/tools/testing/selftests/net/forwarding/devlink_lib.sh +++ b/tools/testing/selftests/net/forwarding/devlink_lib.sh @@ -324,6 +324,14 @@ devlink_trap_rx_bytes_get() | jq '.[][][]["stats"]["rx"]["bytes"]' } +devlink_trap_drop_packets_get() +{ + local trap_name=$1; shift + + devlink -js trap show $DEVLINK_DEV trap $trap_name \ + | jq '.[][][]["stats"]["rx"]["dropped"]' +} + devlink_trap_stats_idle_test() { local trap_name=$1; shift @@ -345,6 +353,24 @@ devlink_trap_stats_idle_test() fi } +devlink_trap_drop_stats_idle_test() +{ + local trap_name=$1; shift + local t0_packets t0_bytes + + t0_packets=$(devlink_trap_drop_packets_get $trap_name) + + sleep 1 + + t1_packets=$(devlink_trap_drop_packets_get $trap_name) + + if [[ $t0_packets -eq $t1_packets ]]; then + return 0 + else + return 1 + fi +} + devlink_traps_enable_all() { local trap_name -- 2.17.1

3 years, 6 months

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[PATCH] selftests: cgroup: add stale mem protection values test

by Alexander Ovechkin

Add test case that reproduces premature oom caused by usage of stale mem protection. Usage of stale mem protection could lead to throttle of reclaim in target memcg and thus could trigger OOM. This bug was fixed in 22f7496f0b90 ("mm, memcg: avoid stale protection values when cgroup is above protection"). Signed-off-by: Alexander Ovechkin <ovov(a)yandex-team.ru> --- tools/testing/selftests/cgroup/cgroup_util.c | 21 ++-- tools/testing/selftests/cgroup/cgroup_util.h | 1 + .../selftests/cgroup/test_memcontrol.c | 96 +++++++++++++++++++ 3 files changed, 111 insertions(+), 7 deletions(-) diff --git a/tools/testing/selftests/cgroup/cgroup_util.c b/tools/testing/selftests/cgroup/cgroup_util.c index 027014662fb2..b4e90fe56c11 100644 --- a/tools/testing/selftests/cgroup/cgroup_util.c +++ b/tools/testing/selftests/cgroup/cgroup_util.c @@ -12,6 +12,7 @@ #include <sys/stat.h> #include <sys/types.h> #include <sys/wait.h> +#include <sys/mman.h> #include <unistd.h> #include "cgroup_util.h" @@ -456,22 +457,28 @@ int get_temp_fd(void) return open(".", O_TMPFILE | O_RDWR | O_EXCL); } +int touch_file(int fd, size_t size, off_t offset) { + char *buf; + + buf = mmap(0, size, PROT_READ, MAP_SHARED | MAP_POPULATE, fd, offset); + if (!buf) + return -1; + munmap(buf, size); + return 0; +} + int alloc_pagecache(int fd, size_t size) { - char buf[PAGE_SIZE]; struct stat st; - int i; if (fstat(fd, &st)) goto cleanup; - size += st.st_size; - - if (ftruncate(fd, size)) + if (ftruncate(fd, st.st_size + size)) goto cleanup; - for (i = 0; i < size; i += sizeof(buf)) - read(fd, buf, sizeof(buf)); + if (touch_file(fd, size, st.st_size)) + goto cleanup; return 0; diff --git a/tools/testing/selftests/cgroup/cgroup_util.h b/tools/testing/selftests/cgroup/cgroup_util.h index 5a1305dd1f0b..c9f3af07d969 100644 --- a/tools/testing/selftests/cgroup/cgroup_util.h +++ b/tools/testing/selftests/cgroup/cgroup_util.h @@ -42,6 +42,7 @@ extern int cg_run_nowait(const char *cgroup, int (*fn)(const char *cgroup, void *arg), void *arg); extern int get_temp_fd(void); +extern int touch_file(int fd, size_t size, off_t offset); extern int alloc_pagecache(int fd, size_t size); extern int alloc_anon(const char *cgroup, void *arg); extern int is_swap_enabled(void); diff --git a/tools/testing/selftests/cgroup/test_memcontrol.c b/tools/testing/selftests/cgroup/test_memcontrol.c index c19a97dd02d4..63b0b4403f4d 100644 --- a/tools/testing/selftests/cgroup/test_memcontrol.c +++ b/tools/testing/selftests/cgroup/test_memcontrol.c @@ -20,6 +20,7 @@ #include "../kselftest.h" #include "cgroup_util.h" + /* * This test creates two nested cgroups with and without enabling * the memory controller. @@ -579,6 +580,24 @@ static int alloc_pagecache_max_30M(const char *cgroup, void *arg) } +static int touch_pagecache(const char *cgroup, void *arg) { + int fd = (long)arg; + struct stat st; + + if (fstat(fd, &st)) + return -1; + + return touch_file(fd, st.st_size, 0); +} + +static int alloc_pagecache_300M(const char *cgroup, void *arg) +{ + int fd = (long)arg; + + return alloc_pagecache(fd, MB(300)); +} + + /* * This test checks that memory.high limits the amount of * memory which can be consumed by either anonymous memory @@ -1169,6 +1188,82 @@ static int test_memcg_oom_group_score_events(const char *root) return ret; } +/* + * First, this test creates the following hierarchy: + * A memory.low = 200M, memory.max = 200M + * A/B memory.low = 200M, memory.max = 200M + * A/C memory.low = 200M, memory.max = 200M + * + * Then it triggers relaim in A, by allocating A/B and A/C + * pagecaches. During this reclaim elow values of A/B and A/C are + * filled. + * Then it lowers limits for A/C to create memory pressure + * and trigger reclaim in A/C. Usage of elow value assigned during + * previous step as memory protection will lead with high probabilty + * to OOM. + */ +static int test_memcg_stale_protection_oom(const char *root) { + int i; + int fd = -1; + char *memcgs[3] = {0}; + const int memcgs_count = sizeof(memcgs)/sizeof(memcgs[0]); + int ret = -1; + char *low1 = "200M", *low2 = "100M"; + + for (i = 0; i < memcgs_count; ++i) { + char name[] = "memcg_test_\0"; + name[sizeof(name)-2] = '0' + i; + memcgs[i] = cg_name(memcgs[0] ? : root, name); + if (!memcgs[i]) + goto cleanup; + if (cg_create(memcgs[i])) + goto cleanup; + } + + if (cg_write(memcgs[0], "cgroup.subtree_control", "+memory")) + goto cleanup; + + for (i = 0; i < memcgs_count; ++i) { + if (cg_write(memcgs[i], "memory.max", low1)) { + goto cleanup; + } + if (cg_write(memcgs[i], "memory.low", low1)) { + goto cleanup; + } + } + + fd = get_temp_fd(); + if (fd < 0) + goto cleanup; + + if (cg_run(memcgs[1], alloc_pagecache_300M, (void*)(long)fd)) { + goto cleanup; + } + if (cg_run(memcgs[2], touch_pagecache, (void*)(long)fd)) { + goto cleanup; + } + + if (cg_write(memcgs[2], "memory.max", low2)) + goto cleanup; + if (cg_write(memcgs[2], "memory.low", low2)) + goto cleanup; + if (cg_run(memcgs[2], touch_pagecache, (void*)(long)fd)) + goto cleanup; + + ret = 0; +cleanup: + for (i = memcgs_count; i > 0; --i) { + if (memcgs[i - 1]) { + cg_destroy(memcgs[i - 1]); + free(memcgs[i - 1]); + } + } + + if (fd >= 0) + close(fd); + return ret; +} + #define T(x) { x, #x } struct memcg_test { @@ -1187,6 +1282,7 @@ struct memcg_test { T(test_memcg_oom_group_leaf_events), T(test_memcg_oom_group_parent_events), T(test_memcg_oom_group_score_events), + T(test_memcg_stale_protection_oom), }; #undef T -- 2.17.1

3 years, 6 months

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[PATCH] kunit: Fix result propagation for parameterised tests

by David Gow

When one parameter of a parameterised test failed, its failure would be propagated to the overall test, but not to the suite result (unless it was the last parameter). This is because test_case->success was being reset to the test->success result after each parameter was used, so a failing test's result would be overwritten by a non-failing result. The overall test result was handled in a third variable, test_result, but this was disacarded after the status line was printed. Instead, just propagate the result after each parameter run. Signed-off-by: David Gow <davidgow(a)google.com> Fixes: fadb08e7c750 ("kunit: Support for Parameterized Testing") --- This is fixing quite a serious bug where some test suites would appear to succeed even if some of their component tests failed. It'd be nice to get this into kunit-fixes ASAP. (This will require a rework of some of the skip tests work, for which I'll send out a new version soon.) Cheers, -- David lib/kunit/test.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/lib/kunit/test.c b/lib/kunit/test.c index 2f6cc0123232..17973a4a44c2 100644 --- a/lib/kunit/test.c +++ b/lib/kunit/test.c @@ -376,7 +376,7 @@ static void kunit_run_case_catch_errors(struct kunit_suite *suite, context.test_case = test_case; kunit_try_catch_run(try_catch, &context); - test_case->success = test->success; + test_case->success &= test->success; } int kunit_run_tests(struct kunit_suite *suite) @@ -388,7 +388,7 @@ int kunit_run_tests(struct kunit_suite *suite) kunit_suite_for_each_test_case(suite, test_case) { struct kunit test = { .param_value = NULL, .param_index = 0 }; - bool test_success = true; + test_case->success = true; if (test_case->generate_params) { /* Get initial param. */ @@ -398,7 +398,6 @@ int kunit_run_tests(struct kunit_suite *suite) do { kunit_run_case_catch_errors(suite, test_case, &test); - test_success &= test_case->success; if (test_case->generate_params) { if (param_desc[0] == '\0') { @@ -420,7 +419,7 @@ int kunit_run_tests(struct kunit_suite *suite) } } while (test.param_value); - kunit_print_ok_not_ok(&test, true, test_success, + kunit_print_ok_not_ok(&test, true, test_case->success, kunit_test_case_num(suite, test_case), test_case->name); } -- 2.32.0.272.g935e593368-goog

3 years, 6 months

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Linux-kselftest-mirror June 2021