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[PATCH] Documentation: kunit: rewrite writing first test instructions

by Bagas Sanjaya

The wordings of step-by-step instructions on writing the first Kunit test are instructing readers to write codes without knowing what these are about. Rewrite these instructions to include the purpose of written code. While at it, align the code blocks of these contents. Signed-off-by: Bagas Sanjaya <bagasdotme(a)gmail.com> --- This patch is based on Khalid's full path to .kunitconfig patch [1]. [1]: https://lore.kernel.org/linux-doc/20220929085332.4155-1-khalid.masum.92@gma… Documentation/dev-tools/kunit/start.rst | 40 ++++++++++++++----------- 1 file changed, 22 insertions(+), 18 deletions(-) diff --git a/Documentation/dev-tools/kunit/start.rst b/Documentation/dev-tools/kunit/start.rst index 7999874dc4ddb3..9628360947507b 100644 --- a/Documentation/dev-tools/kunit/start.rst +++ b/Documentation/dev-tools/kunit/start.rst @@ -131,17 +131,19 @@ are built-in. Otherwise the module will need to be loaded. Writing Your First Test ======================= -In your kernel repository, let's add some code that we can test. +In your kernel repository, let's add some code that we can test. For this +purpose, we are going to add simple addition driver. -1. Create a file ``drivers/misc/example.h``, which includes: +1. Write the feature that will be tested. First, write the declaration + for ``misc_example_add()`` in ``drivers/misc/example.h``: -.. code-block:: c + .. code-block:: c int misc_example_add(int left, int right); -2. Create a file ``drivers/misc/example.c``, which includes: + Then implement the function in ``drivers/misc/example.c``: -.. code-block:: c + .. code-block:: c #include <linux/errno.h> @@ -152,24 +154,25 @@ In your kernel repository, let's add some code that we can test. return left + right; } -3. Add the following lines to ``drivers/misc/Kconfig``: +3. Add Kconfig menu entry for the feature to ``drivers/misc/Kconfig``: -.. code-block:: kconfig + .. code-block:: kconfig config MISC_EXAMPLE bool "My example" -4. Add the following lines to ``drivers/misc/Makefile``: +4. Add the kbuild goal that will build the feature to + ``drivers/misc/Makefile``: -.. code-block:: make + .. code-block:: make obj-$(CONFIG_MISC_EXAMPLE) += example.o Now we are ready to write the test cases. -1. Add the below test case in ``drivers/misc/example_test.c``: +1. Write the test in ``drivers/misc/example_test.c``: -.. code-block:: c + .. code-block:: c #include <kunit/test.h> #include "example.h" @@ -202,31 +205,32 @@ Now we are ready to write the test cases. }; kunit_test_suite(misc_example_test_suite); -2. Add the following lines to ``drivers/misc/Kconfig``: +2. Add following Kconfig entry for the test to ``drivers/misc/Kconfig``: -.. code-block:: kconfig + .. code-block:: kconfig config MISC_EXAMPLE_TEST tristate "Test for my example" if !KUNIT_ALL_TESTS depends on MISC_EXAMPLE && KUNIT=y default KUNIT_ALL_TESTS -3. Add the following lines to ``drivers/misc/Makefile``: +3. Add kbuild goal of the test to ``drivers/misc/Makefile``: -.. code-block:: make + .. code-block:: make obj-$(CONFIG_MISC_EXAMPLE_TEST) += example_test.o -4. Add following configuration fragments to ``.kunit/.kunitconfig``: +4. Add following configuration fragments for the test to + ``.kunit/.kunitconfig``: -.. code-block:: none + .. code-block:: none CONFIG_MISC_EXAMPLE=y CONFIG_MISC_EXAMPLE_TEST=y 5. Run the test: -.. code-block:: bash + .. code-block:: bash ./tools/testing/kunit/kunit.py run -- An old man doll... just what I always wanted! - Clara

3 years, 1 month

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Re: [PATCH -next v4 1/3] selftests/memory-hotplug: Add checking after online or offline

by zhaogongyi

Hi! > > On 29.09.22 09:39, zhaogongyi wrote: > > Hi, > > > > We can not get the EBUSY from " echo 0 > > /sys/devices/system/memory/memoryxxx/online", maybe, redirect the error > ouput to /dev/null is suitable when calling offline_memory_expect_success(): > > > > # sh mem-on-off-test.sh -a > > mem-on-off-test.sh: illegal option -- a Test scope: 2% hotplug memory > > online all hot-pluggable memory in offline state: > > SKIPPED - no hot-pluggable memory in offline state > > offline 2% hot-pluggable memory in online state > > trying to offline 4 out of 192 memory block(s): > > online->offline memory0 > > online->offline memory10 > > online->offline memory100 > > online->offline memory101 > > online->offline memory102 > > online->offline memory103 > > online->offline memory104 > > online->offline memory105 > > online->offline memory106 > > online->offline memory107 > > online->offline memory108 > > online->offline memory109 > > online->offline memory11 > > online->offline memory110 > > online->offline memory111 > > online->offline memory112 > > online->offline memory113 > > online->offline memory114 > > online->offline memory115 > > online->offline memory116 > > online->offline memory117 > > online->offline memory118 > > online->offline memory119 > > online->offline memory12 > > online->offline memory120 > > online->offline memory121 > > online->offline memory122 > > online->offline memory123 > > online->offline memory124 > > Can we have here an output like > > online->offline memory0 > -> Failure > online->offline memory10 > -> Success > > That would make much more sense for debugging purposes and understanding > what is happening here. I was primarily concerned about the misleading error > message, that indicated that something is "unexpected" -- it's perfectly > reasonable here to *expect* that offlining a random memory blocks just fails. Yes, I will submit a new version of patches to implement it as your suggestiones: 1. Redirect misleading msg to /dev/null 2. Add an output for online->offline test Thanks! > > -- > Thanks, > > David / dhildenb

3 years, 1 month

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[PATCH 1/2] kunit: tool: remove UML specific options from all_tests_uml.config

by Daniel Latypov

Commit 6fc3a8636a7b ("kunit: tool: Enable virtio/PCI by default on UML") made it so we enable these options by default for UML. Specifying them here is now redundant. Signed-off-by: Daniel Latypov <dlatypov(a)google.com> --- tools/testing/kunit/configs/all_tests_uml.config | 2 -- 1 file changed, 2 deletions(-) diff --git a/tools/testing/kunit/configs/all_tests_uml.config b/tools/testing/kunit/configs/all_tests_uml.config index bdee36bef4a3..f990cbb73250 100644 --- a/tools/testing/kunit/configs/all_tests_uml.config +++ b/tools/testing/kunit/configs/all_tests_uml.config @@ -16,8 +16,6 @@ CONFIG_EXT4_FS=y CONFIG_MSDOS_FS=y CONFIG_VFAT_FS=y -CONFIG_VIRTIO_UML=y -CONFIG_UML_PCI_OVER_VIRTIO=y CONFIG_PCI=y CONFIG_USB4=y base-commit: 0b3acd1cc0222953035d18176b1e4aa06624fd6e -- 2.37.2.789.g6183377224-goog

3 years, 1 month

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Re: [PATCH -next v4 1/3] selftests/memory-hotplug: Add checking after online or offline

by zhaogongyi

Hi, We can not get the EBUSY from " echo 0 > /sys/devices/system/memory/memoryxxx/online", maybe, redirect the error ouput to /dev/null is suitable when calling offline_memory_expect_success(): # sh mem-on-off-test.sh -a mem-on-off-test.sh: illegal option -- a Test scope: 2% hotplug memory online all hot-pluggable memory in offline state: SKIPPED - no hot-pluggable memory in offline state offline 2% hot-pluggable memory in online state trying to offline 4 out of 192 memory block(s): online->offline memory0 online->offline memory10 online->offline memory100 online->offline memory101 online->offline memory102 online->offline memory103 online->offline memory104 online->offline memory105 online->offline memory106 online->offline memory107 online->offline memory108 online->offline memory109 online->offline memory11 online->offline memory110 online->offline memory111 online->offline memory112 online->offline memory113 online->offline memory114 online->offline memory115 online->offline memory116 online->offline memory117 online->offline memory118 online->offline memory119 online->offline memory12 online->offline memory120 online->offline memory121 online->offline memory122 online->offline memory123 online->offline memory124 online all hot-pluggable memory in offline state: offline->online memory121 offline->online memory122 offline->online memory123 offline->online memory124 Test with memory notifier error injection # echo $? 0 Thanks! Gongyi > > > >> Reviewed-by: David Hildenbrand <david(a)redhat.com> > >> > >> > >> I am questioning the stability of the offlining test, though. > >> Offlining a random memory block can fail easily, because > >> "->removable" is not > >> expressive: > >> > >> # tools/testing/selftests/memory-hotplug/mem-on-off-test.sh > >> Test scope: 2% hotplug memory > >> online all hot-pluggable memory in offline state: > >> SKIPPED - no hot-pluggable memory in offline state > >> offline 2% hot-pluggable memory in online state > >> trying to offline 2 out of 96 memory block(s): > >> online->offline memory0 > >> tools/testing/selftests/memory-hotplug/mem-on-off-test.sh: line 78: echo: > >> write error: Invalid argument offline_memory_expect_success 0: > >> unexpected fail > >> online->offline memory10 > >> online->offline memory11 > >> > >> > >> I guess this test will almost always fail nowadays. > > > > Offline some memory node maybe failed as expected, but the error message > is a bit annoying. > > Ah, I see it now. We try offlining two and fail offlining the first one. > Can we silence that warning in that case somehow? > > -- > Thanks, > > David / dhildenb

3 years, 1 month

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[PATCH] Documentation: Kunit: Use full path to .kunitconfig

by Khalid Masum

The numbered list contains full path to every files that need to be modified or created in order to implement misc-example kunit test. Except for .kunitconfig. Which might make a newcommer confused about where the file exists. Since there are multiple .kunitconfig files. Fix this by using the full path to .kunitconfig. Signed-off-by: Khalid Masum <khalid.masum.92(a)gmail.com> --- Documentation/dev-tools/kunit/start.rst | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Documentation/dev-tools/kunit/start.rst b/Documentation/dev-tools/kunit/start.rst index 867a4bba6bf6..69361065cda6 100644 --- a/Documentation/dev-tools/kunit/start.rst +++ b/Documentation/dev-tools/kunit/start.rst @@ -217,7 +217,7 @@ Now we are ready to write the test cases. obj-$(CONFIG_MISC_EXAMPLE_TEST) += example_test.o -4. Add the following lines to ``.kunitconfig``: +4. Add the following lines to ``.kunit/.kunitconfig``: .. code-block:: none -- 2.37.3

3 years, 1 month

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[PATCH net-next] selftests/tc-testing: update qdisc/cls/action features in config

by Zhengchao Shao

Since three patchsets "add tc-testing test cases", "refactor duplicate codes in the tc cls walk function", and "refactor duplicate codes in the qdisc class walk function" are merged to net-next tree, the list of supported features needs to be updated in config file. Signed-off-by: Zhengchao Shao <shaozhengchao(a)huawei.com> --- tools/testing/selftests/tc-testing/config | 25 ++++++++++++++++++++++- 1 file changed, 24 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/tc-testing/config b/tools/testing/selftests/tc-testing/config index 2b2c2a835757..5ec7418a3c29 100644 --- a/tools/testing/selftests/tc-testing/config +++ b/tools/testing/selftests/tc-testing/config @@ -13,15 +13,28 @@ CONFIG_NET_SCHED=y # Queueing/Scheduling # CONFIG_NET_SCH_ATM=m +CONFIG_NET_SCH_CAKE=m +CONFIG_NET_SCH_CBQ=m +CONFIG_NET_SCH_CBS=m CONFIG_NET_SCH_CHOKE=m CONFIG_NET_SCH_CODEL=m +CONFIG_NET_SCH_DRR=m +CONFIG_NET_SCH_DSMARK=m CONFIG_NET_SCH_ETF=m CONFIG_NET_SCH_FQ=m +CONFIG_NET_SCH_FQ_CODEL=m CONFIG_NET_SCH_GRED=m +CONFIG_NET_SCH_HFSC=m CONFIG_NET_SCH_HHF=m +CONFIG_NET_SCH_HTB=m +CONFIG_NET_SCH_INGRESS=m +CONFIG_NET_SCH_MQPRIO=m +CONFIG_NET_SCH_MULTIQ=m +CONFIG_NET_NET_SCH_NETEM=m +CONFIG_NET_SCH_PIE=m CONFIG_NET_SCH_PLUG=m CONFIG_NET_SCH_PRIO=m -CONFIG_NET_SCH_INGRESS=m +CONFIG_NET_SCH_QFQ=m CONFIG_NET_SCH_SFB=m CONFIG_NET_SCH_SFQ=m CONFIG_NET_SCH_SKBPRIO=m @@ -37,6 +50,15 @@ CONFIG_NET_CLS_FW=m CONFIG_NET_CLS_U32=m CONFIG_CLS_U32_PERF=y CONFIG_CLS_U32_MARK=y +CONFIG_NET_CLS_BASIC=m +CONFIG_NET_CLS_BPF=m +CONFIG_NET_CLS_CGROUP=m +CONFIG_NET_CLS_FLOW=m +CONFIG_NET_CLS_FLOWER=m +CONFIG_NET_CLS_MATCHALL=m +CONFIG_NET_CLS_ROUTE4=m +CONFIG_NET_CLS_RSVP=m +CONFGI_NET_CLS_TCINDEX=m CONFIG_NET_EMATCH=y CONFIG_NET_EMATCH_STACK=32 CONFIG_NET_EMATCH_CMP=m @@ -68,6 +90,7 @@ CONFIG_NET_ACT_IFE=m CONFIG_NET_ACT_TUNNEL_KEY=m CONFIG_NET_ACT_CT=m CONFIG_NET_ACT_MPLS=m +CONFIG_NET_ACT_GATE=m CONFIG_NET_IFE_SKBMARK=m CONFIG_NET_IFE_SKBPRIO=m CONFIG_NET_IFE_SKBTCINDEX=m -- 2.17.1

3 years, 1 month

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[PATCH] KVM: selftests: Fix spelling mistake "miliseconds" -> "milliseconds"

by Colin Ian King

There is a spelling mistake in some help text. Fix it. Signed-off-by: Colin Ian King <colin.i.king(a)gmail.com> --- tools/testing/selftests/kvm/x86_64/nx_huge_pages_test.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/testing/selftests/kvm/x86_64/nx_huge_pages_test.c b/tools/testing/selftests/kvm/x86_64/nx_huge_pages_test.c index e19933ea34ca..62827d121c4f 100644 --- a/tools/testing/selftests/kvm/x86_64/nx_huge_pages_test.c +++ b/tools/testing/selftests/kvm/x86_64/nx_huge_pages_test.c @@ -211,7 +211,7 @@ static void help(char *name) puts(""); printf("usage: %s [-h] [-p period_ms] [-t token]\n", name); puts(""); - printf(" -p: The NX reclaim period in miliseconds.\n"); + printf(" -p: The NX reclaim period in milliseconds.\n"); printf(" -t: The magic token to indicate environment setup is done.\n"); printf(" -r: The test has reboot permissions and can disable NX huge pages.\n"); puts(""); -- 2.37.1

3 years, 1 month

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[PATCH] kselftests/sched: Fix spelling mistake "hiearchy" -> "hierarchy"

by Colin Ian King

There is a spelling mistake in a printed message. Fix it. Signed-off-by: Colin Ian King <colin.i.king(a)gmail.com> --- tools/testing/selftests/sched/cs_prctl_test.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/testing/selftests/sched/cs_prctl_test.c b/tools/testing/selftests/sched/cs_prctl_test.c index 8109b17dc764..62b579b601bf 100644 --- a/tools/testing/selftests/sched/cs_prctl_test.c +++ b/tools/testing/selftests/sched/cs_prctl_test.c @@ -267,7 +267,7 @@ int main(int argc, char *argv[]) if (setpgid(0, 0) != 0) handle_error("process group"); - printf("\n## Create a thread/process/process group hiearchy\n"); + printf("\n## Create a thread/process/process group hierarchy\n"); create_processes(num_processes, num_threads, procs); need_cleanup = 1; disp_processes(num_processes, procs); -- 2.37.1

3 years, 1 month

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[PATCH] KVM: selftests: Fix spelling mistake "begining" -> "beginning"

by Colin Ian King

There is a spelling mistake in an asset message. Fix it. Signed-off-by: Colin Ian King <colin.i.king(a)gmail.com> --- tools/testing/selftests/kvm/lib/elf.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/testing/selftests/kvm/lib/elf.c b/tools/testing/selftests/kvm/lib/elf.c index 9f54c098d9d0..d71a9a5974de 100644 --- a/tools/testing/selftests/kvm/lib/elf.c +++ b/tools/testing/selftests/kvm/lib/elf.c @@ -138,7 +138,7 @@ void kvm_vm_elf_load(struct kvm_vm *vm, const char *filename) offset = hdr.e_phoff + (n1 * hdr.e_phentsize); offset_rv = lseek(fd, offset, SEEK_SET); TEST_ASSERT(offset_rv == offset, - "Failed to seek to begining of program header %u,\n" + "Failed to seek to beginning of program header %u,\n" " filename: %s\n" " rv: %jd errno: %i", n1, filename, (intmax_t) offset_rv, errno); -- 2.37.1

3 years, 1 month

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[PATCH v2 0/2] kunit: add boot time parameter to enable KUnit

by Joe Fradley

v2: - Added enable check in executor.c to prevent wrong error output from kunit_tool.py when run against a KUnit disabled kernel - kunit_tool.py now passes kunit.enable=1 - Flipped around logic of new config to KUNIT_DEFAULT_ENABLED - Now load modules containing tests but not executing them - Various message/description text clean up There are some use cases where the kernel binary is desired to be the same for both production and testing. This poses a problem for users of KUnit as built-in tests will automatically run at startup and test modules can still be loaded leaving the kernel in an unsafe state. There is a "test" taint flag that gets set if a test runs but nothing to prevent the execution. This patch adds the kunit.enable module parameter that will need to be set to true in addition to KUNIT being enabled for KUnit tests to run. The default value is true giving backwards compatibility. However, for the production+testing use case the new config option KUNIT_DEFAULT_ENABLED can be set to N requiring the tester to opt-in by passing kunit.enable=1 to the kernel. Joe Fradley (2): kunit: add kunit.enable to enable/disable KUnit test kunit: no longer call module_info(test, "Y") for kunit modules .../admin-guide/kernel-parameters.txt | 6 +++++ include/kunit/test.h | 3 ++- lib/kunit/Kconfig | 11 +++++++++ lib/kunit/executor.c | 4 ++++ lib/kunit/test.c | 24 +++++++++++++++++++ tools/testing/kunit/kunit_kernel.py | 1 + 6 files changed, 48 insertions(+), 1 deletion(-) -- 2.37.1.595.g718a3a8f04-goog

3 years, 1 month

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