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2021-05-21Documentation: kunit: Update kunit_tool pageDavid Gow1-8/+132
The kunit_tool documentation page was pretty minimal, and a bit outdated. Update it and flesh it out a bit. In particular, - Mention that .kunitconfig is now in the build directory - Describe the use of --kunitconfig to specify a different config framgent - Mention the split functionality (i.e., commands other than 'run') - Describe --raw_output and kunit.py parse - Mention the globbing support - Provide a quick overview of other options, including --build_dir and --alltests Note that this does overlap a little with the new running_tips page. I don't think it's a problem having both: this page is supposed to be a bit more of a reference, rather than a list of useful tips, so the fact that they both describe the same features isn't a problem. Signed-off-by: David Gow <[email protected]> Reviewed-by: Daniel Latypov <[email protected]> Signed-off-by: Shuah Khan <[email protected]>
2021-05-21Documentation: kunit: add tips for running KUnitDaniel Latypov3-0/+262
This is long overdue. There are several things that aren't nailed down (in-tree .kunitconfig's), or partially broken (GCOV on UML), but having them documented, warts and all, is better than having nothing. This covers a bunch of the more recent features * kunit_filter_glob * kunit.py run --kunitconfig * slightly more detail on building tests as modules * CONFIG_KUNIT_DEBUGFS By my count, the only headline features now not mentioned are the KASAN integration and KernelCI json output support (kunit.py run --json). And then it also discusses how to get code coverage reports under UML and non-UML since this is a question people have repeatedly asked. Non-UML coverage collection is no different from normal, but we should probably explicitly call this out. As for UML, I was able to get it working again with two small hacks.* E.g. with CONFIG_KUNIT=y && CONFIG_KUNIT_ALL_TESTS=y Overall coverage rate: lines......: 15.1% (18294 of 120776 lines) functions..: 16.8% (1860 of 11050 functions) Note: this doesn't document --alltests since this is not stable yet. Hopefully being run more frequently as part of KernelCI will help... *Using gcc/gcov-6 and not using uml_abort() in os_dump_core(). I've documented these hacks in "Notes" but left TODOs for [email protected] who tracked down the runtime issue in GCC. To be clear: these are not issues specific to KUnit, but rather to UML. Signed-off-by: Daniel Latypov <[email protected]> Reviewed-by: David Gow <[email protected]> Reviewed-by: Brendan Higgins <[email protected]> Signed-off-by: Shuah Khan <[email protected]>
2021-05-20Documentation: checkpatch: Tweak BIT() macro includeAndrew Jeffery1-1/+1
While include/linux/bitops.h brings in the BIT() macro, it was moved to include/linux/bits.h in commit 8bd9cb51daac ("locking/atomics, asm-generic: Move some macros from <linux/bitops.h> to a new <linux/bits.h> file"). Since that commit BIT() has moved again into include/vdso/bits.h via commit 3945ff37d2f4 ("linux/bits.h: Extract common header for vDSO"). I think the move to the vDSO header can be considered an implementation detail, so for now update the checkpatch documentation to recommend use of include/linux/bits.h. Signed-off-by: Andrew Jeffery <[email protected]> Acked-by: Jiri Slaby <[email protected]> Acked-by: Lukas Bulwahn <[email protected]> Acked-by: Dwaipayan Ray <[email protected]> Cc: Jiri Slaby <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Jonathan Corbet <[email protected]>
2021-05-20docs: Add more message type documentations for checkpatchDwaipayan Ray1-7/+163
- Document a couple of more checkpatch message types. - Add a blank line before all `See:` lines to improve the rst output. - Create a new subsection `Permissions` and move a few types to it. Signed-off-by: Dwaipayan Ray <[email protected]> Acked-by: Lukas Bulwahn <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Jonathan Corbet <[email protected]>
2021-05-18kcsan: Use URL link for pointing access-marking.txtAkira Yokosawa1-2/+3
For consistency within kcsan.rst, use a URL link as the same as in section "Data Races". Acked-by: Marco Elver <[email protected]> Signed-off-by: Akira Yokosawa <[email protected]> Signed-off-by: Paul E. McKenney <[email protected]>
2021-05-18kcsan: Document "value changed" lineMarco Elver1-53/+35
Update the example reports based on the latest reports generated by kcsan_test module, which now include the "value changed" line. Add a brief description of the "value changed" line. Signed-off-by: Marco Elver <[email protected]> Signed-off-by: Paul E. McKenney <[email protected]>
2021-05-18kcsan: Add pointer to access-marking.txt to data_race() bulletPaul E. McKenney1-1/+3
This commit references tools/memory-model/Documentation/access-marking.txt in the bullet introducing data_race(). The access-marking.txt file gives advice on when data_race() should and should not be used. Suggested-by: Akira Yokosawa <[email protected]> Signed-off-by: Paul E. McKenney <[email protected]>
2021-05-07scripts/gdb: add lx_current support for arm64Barry Song1-1/+1
arm64 uses SP_EL0 to save the current task_struct address. While running in EL0, SP_EL0 is clobbered by userspace. So if the upper bit is not 1 (not TTBR1), the current address is invalid. This patch checks the upper bit of SP_EL0, if the upper bit is 1, lx_current() of arm64 will return the derefrence of current task. Otherwise, lx_current() will tell users they are running in userspace(EL0). While arm64 is running in EL0, it is actually pointless to print current task as the memory of kernel space is not accessible in EL0. Link: https://lkml.kernel.org/r/[email protected] Signed-off-by: Barry Song <[email protected]> Cc: Jan Kiszka <[email protected]> Cc: Jonathan Corbet <[email protected]> Cc: Kieran Bingham <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2021-05-07scripts/gdb: document lx_current is only supported by x86Barry Song1-1/+1
Patch series "scripts/gdb: clarify the platforms supporting lx_current and add arm64 support", v2. lx_current depends on per_cpu current_task variable which exists on x86 only. so it actually works on x86 only. the 1st patch documents this clearly; the 2nd patch adds support for arm64. This patch (of 2): x86 is the only architecture which has per_cpu current_task: arch$ git grep current_task | grep -i per_cpu x86/include/asm/current.h:DECLARE_PER_CPU(struct task_struct *, current_task); x86/kernel/cpu/common.c:DEFINE_PER_CPU(struct task_struct *, current_task) ____cacheline_aligned = x86/kernel/cpu/common.c:EXPORT_PER_CPU_SYMBOL(current_task); x86/kernel/cpu/common.c:DEFINE_PER_CPU(struct task_struct *, current_task) = &init_task; x86/kernel/cpu/common.c:EXPORT_PER_CPU_SYMBOL(current_task); x86/kernel/smpboot.c: per_cpu(current_task, cpu) = idle; On other architectures, lx_current() will lead to a python exception: (gdb) p $lx_current().pid Python Exception <class 'gdb.error'> No symbol "current_task" in current context.: Error occurred in Python: No symbol "current_task" in current context. To avoid more people struggling and wasting time in other architectures, document it. Link: https://lkml.kernel.org/r/[email protected] Link: https://lkml.kernel.org/r/[email protected] Signed-off-by: Barry Song <[email protected]> Cc: Jan Kiszka <[email protected]> Cc: Kieran Bingham <[email protected]> Cc: Jonathan Corbet <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2021-04-30kasan: docs: update tests sectionAndrey Konovalov1-17/+15
Update the "Tests" section in KASAN documentation: - Add an introductory sentence. - Add proper indentation for the list of ways to run KUnit tests. - Punctuation, readability, and other minor clean-ups. Link: https://lkml.kernel.org/r/fb08845e25c8847ffda271fa19cda2621c04a65b.1615559068.git.andreyknvl@google.com Signed-off-by: Andrey Konovalov <[email protected]> Reviewed-by: Marco Elver <[email protected]> Cc: Alexander Potapenko <[email protected]> Cc: Andrey Ryabinin <[email protected]> Cc: Dmitry Vyukov <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2021-04-30kasan: docs: update ignoring accesses sectionAndrey Konovalov1-4/+30
Update the "Ignoring accesses" section in KASAN documentation: - Mention __no_sanitize_address/noinstr. - Mention kasan_disable/enable_current(). - Mention kasan_reset_tag()/page_kasan_tag_reset(). - Readability and punctuation clean-ups. Link: https://lkml.kernel.org/r/4531ba5f3eca61f6aade863c136778cc8c807a64.1615559068.git.andreyknvl@google.com Signed-off-by: Andrey Konovalov <[email protected]> Reviewed-by: Marco Elver <[email protected]> Cc: Alexander Potapenko <[email protected]> Cc: Andrey Ryabinin <[email protected]> Cc: Dmitry Vyukov <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2021-04-30kasan: docs: update shadow memory sectionAndrey Konovalov1-17/+14
Update the "Shadow memory" section in KASAN documentation: - Rearrange the introduction paragraph do it doesn't give a "KASAN has an issue" impression. - Update the list of architectures with vmalloc support. - Punctuation, readability, and other minor clean-ups. Link: https://lkml.kernel.org/r/00f8c38b0fd5290a3f4dced04eaba41383e67e14.1615559068.git.andreyknvl@google.com Signed-off-by: Andrey Konovalov <[email protected]> Reviewed-by: Marco Elver <[email protected]> Cc: Alexander Potapenko <[email protected]> Cc: Andrey Ryabinin <[email protected]> Cc: Dmitry Vyukov <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2021-04-30kasan: docs: update HW_TAGS implementation details sectionAndrey Konovalov1-13/+13
Update the "Implementation details" section for HW_TAGS KASAN: - Punctuation, readability, and other minor clean-ups. Link: https://lkml.kernel.org/r/ee2caf4c138cc1fd239822c2abefd5af6c057744.1615559068.git.andreyknvl@google.com Signed-off-by: Andrey Konovalov <[email protected]> Reviewed-by: Marco Elver <[email protected]> Cc: Alexander Potapenko <[email protected]> Cc: Andrey Ryabinin <[email protected]> Cc: Dmitry Vyukov <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2021-04-30kasan: docs: update SW_TAGS implementation details sectionAndrey Konovalov1-20/+19
Update the "Implementation details" section for SW_TAGS KASAN: - Clarify the introduction sentence. - Punctuation, readability, and other minor clean-ups. Link: https://lkml.kernel.org/r/69b9b2e49d8cf789358fa24558be3fc0ce4ee32c.1615559068.git.andreyknvl@google.com Signed-off-by: Andrey Konovalov <[email protected]> Reviewed-by: Marco Elver <[email protected]> Cc: Alexander Potapenko <[email protected]> Cc: Andrey Ryabinin <[email protected]> Cc: Dmitry Vyukov <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2021-04-30kasan: docs: update GENERIC implementation details sectionAndrey Konovalov1-14/+13
Update the "Implementation details" section for generic KASAN: - Don't mention kmemcheck, it's not present in the kernel anymore. - Don't mention GCC as the only supported compiler. - Update kasan_mem_to_shadow() definition to match actual code. - Punctuation, readability, and other minor clean-ups. Link: https://lkml.kernel.org/r/f2f35fdab701f8c709f63d328f98aec2982c8acc.1615559068.git.andreyknvl@google.com Signed-off-by: Andrey Konovalov <[email protected]> Reviewed-by: Marco Elver <[email protected]> Cc: Alexander Potapenko <[email protected]> Cc: Andrey Ryabinin <[email protected]> Cc: Dmitry Vyukov <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2021-04-30kasan: docs: update boot parameters sectionAndrey Konovalov1-4/+10
Update the "Boot parameters" section in KASAN documentation: - Mention panic_on_warn. - Mention kasan_multi_shot and its interaction with panic_on_warn. - Clarify kasan.fault=panic interaction with panic_on_warn. - A readability clean-up. Link: https://lkml.kernel.org/r/01364952f15789948f0627d6733b5cdf5209f83a.1615559068.git.andreyknvl@google.com Signed-off-by: Andrey Konovalov <[email protected]> Reviewed-by: Marco Elver <[email protected]> Cc: Alexander Potapenko <[email protected]> Cc: Andrey Ryabinin <[email protected]> Cc: Dmitry Vyukov <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2021-04-30kasan: docs: update error reports sectionAndrey Konovalov1-20/+26
Update the "Error reports" section in KASAN documentation: - Mention that bug titles are best-effort. - Move and reword the part about auxiliary stacks from "Implementation details". - Punctuation, readability, and other minor clean-ups. Link: https://lkml.kernel.org/r/3531e8fe6972cf39d1954e3643237b19eb21227e.1615559068.git.andreyknvl@google.com Signed-off-by: Andrey Konovalov <[email protected]> Reviewed-by: Marco Elver <[email protected]> Cc: Alexander Potapenko <[email protected]> Cc: Andrey Ryabinin <[email protected]> Cc: Dmitry Vyukov <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2021-04-30kasan: docs: update usage sectionAndrey Konovalov1-12/+11
Update the "Usage" section in KASAN documentation: - Add inline code snippet markers. - Reword the part about stack traces for clarity. - Other minor clean-ups. Link: https://lkml.kernel.org/r/48427809cd4b8b5d6bc00926cbe87e2b5081df17.1615559068.git.andreyknvl@google.com Signed-off-by: Andrey Konovalov <[email protected]> Reviewed-by: Marco Elver <[email protected]> Cc: Alexander Potapenko <[email protected]> Cc: Andrey Ryabinin <[email protected]> Cc: Dmitry Vyukov <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2021-04-30kasan: docs: update overview sectionAndrey Konovalov1-8/+19
Update the "Overview" section in KASAN documentation: - Outline main use cases for each mode. - Mention that HW_TAGS mode need compiler support too. - Move the part about SLUB/SLAB support from "Usage" to "Overview". - Punctuation, readability, and other minor clean-ups. Link: https://lkml.kernel.org/r/1486fba8514de3d7db2f47df2192db59228b0a7b.1615559068.git.andreyknvl@google.com Signed-off-by: Andrey Konovalov <[email protected]> Reviewed-by: Marco Elver <[email protected]> Cc: Alexander Potapenko <[email protected]> Cc: Andrey Ryabinin <[email protected]> Cc: Dmitry Vyukov <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2021-04-30kasan: docs: clean up sectionsAndrey Konovalov1-27/+27
Update KASAN documentation: - Give some sections clearer names. - Remove unneeded subsections in the "Tests" section. - Move the "For developers" section and split into subsections. Link: https://lkml.kernel.org/r/c2bbb56eaea80ad484f0ee85bb71959a3a63f1d7.1615559068.git.andreyknvl@google.com Signed-off-by: Andrey Konovalov <[email protected]> Reviewed-by: Marco Elver <[email protected]> Cc: Alexander Potapenko <[email protected]> Cc: Andrey Ryabinin <[email protected]> Cc: Dmitry Vyukov <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2021-04-28Merge tag 'locking-core-2021-04-28' of ↵Linus Torvalds1-0/+3
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull locking updates from Ingo Molnar: - rtmutex cleanup & spring cleaning pass that removes ~400 lines of code - Futex simplifications & cleanups - Add debugging to the CSD code, to help track down a tenacious race (or hw problem) - Add lockdep_assert_not_held(), to allow code to require a lock to not be held, and propagate this into the ath10k driver - Misc LKMM documentation updates - Misc KCSAN updates: cleanups & documentation updates - Misc fixes and cleanups - Fix locktorture bugs with ww_mutexes * tag 'locking-core-2021-04-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (44 commits) kcsan: Fix printk format string static_call: Relax static_call_update() function argument type static_call: Fix unused variable warn w/o MODULE locking/rtmutex: Clean up signal handling in __rt_mutex_slowlock() locking/rtmutex: Restrict the trylock WARN_ON() to debug locking/rtmutex: Fix misleading comment in rt_mutex_postunlock() locking/rtmutex: Consolidate the fast/slowpath invocation locking/rtmutex: Make text section and inlining consistent locking/rtmutex: Move debug functions as inlines into common header locking/rtmutex: Decrapify __rt_mutex_init() locking/rtmutex: Remove pointless CONFIG_RT_MUTEXES=n stubs locking/rtmutex: Inline chainwalk depth check locking/rtmutex: Move rt_mutex_debug_task_free() to rtmutex.c locking/rtmutex: Remove empty and unused debug stubs locking/rtmutex: Consolidate rt_mutex_init() locking/rtmutex: Remove output from deadlock detector locking/rtmutex: Remove rtmutex deadlock tester leftovers locking/rtmutex: Remove rt_mutex_timed_lock() MAINTAINERS: Add myself as futex reviewer locking/mutex: Remove repeated declaration ...
2021-04-27Merge tag 'linux-kselftest-kunit-5.13-rc1' of ↵Linus Torvalds1-2/+76
git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest Pull KUnit updates from Shuah Khan: "Several fixes and a new feature to support failure from dynamic analysis tools such as UBSAN and fake ops for testing. - a fake ops struct for testing a "free" function to complain if it was called with an invalid argument, or caught a double-free. Most return void and have no normal means of signalling failure (e.g. super_operations, iommu_ops, etc.)" * tag 'linux-kselftest-kunit-5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: Documentation: kunit: add tips for using current->kunit_test kunit: fix -Wunused-function warning for __kunit_fail_current_test kunit: support failure from dynamic analysis tools kunit: tool: make --kunitconfig accept dirs, add lib/kunit fragment kunit: make KUNIT_EXPECT_STREQ() quote values, don't print literals kunit: Match parenthesis alignment to improve code readability
2021-04-27Merge tag 'linux-kselftest-next-5.13-rc1' of ↵Linus Torvalds1-2/+2
git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest Pull Kselftest updates from Shuah Khan: - fixes and updates to resctrl test from Fenghua Yu and Reinette Chatre - fixes to Kselftest documentation, framework - minor spelling correction in timers test * tag 'linux-kselftest-next-5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: (25 commits) selftests/resctrl: Change a few printed messages Documentation: kselftest: fix path to test module files selftests/resctrl: Create .gitignore to include resctrl_tests selftests/resctrl: Fix checking for < 0 for unsigned values selftests/resctrl: Fix incorrect parsing of iMC counters selftests/resctrl: Fix unmount resctrl FS selftests/resctrl: Skip the test if requested resctrl feature is not supported selftests/resctrl: Modularize resctrl test suite main() function selftests/resctrl: Don't hard code value of "no_of_bits" variable selftests/resctrl: Fix MBA/MBM results reporting format selftests/resctrl: Use resctrl/info for feature detection selftests/resctrl: Check for resctrl mount point only if resctrl FS is supported selftests/resctrl: Add config dependencies selftests/resctrl: Fix a printed message selftests/resctrl: Share show_cache_info() by CAT and CMT tests selftests/resctrl: Call kselftest APIs to log test results selftests/resctrl: Rename CQM test as CMT test selftests/resctrl: Fix missing options "-n" and "-p" selftests/resctrl: Ensure sibling CPU is not same as original CPU selftests/resctrl: Clean up resctrl features check ...
2021-04-26Merge tag 'docs-5.13' of git://git.lwn.net/linuxLinus Torvalds4-2/+883
Pull documentation updates from Jonathan Corbet: "It's been a relatively busy cycle in docsland, though more than usually well contained to Documentation/ itself. Highlights include: - The Chinese translators have been busy and show no signs of stopping anytime soon. Italian has also caught up. - Aditya Srivastava has been working on improvements to the kernel-doc script. - Thorsten continues his work on reporting-issues.rst and related documentation around regression reporting. - Lots of documentation updates, typo fixes, etc. as usual" * tag 'docs-5.13' of git://git.lwn.net/linux: (139 commits) docs/zh_CN: add openrisc translation to zh_CN index docs/zh_CN: add openrisc index.rst translation docs/zh_CN: add openrisc todo.rst translation docs/zh_CN: add openrisc openrisc_port.rst translation docs/zh_CN: add core api translation to zh_CN index docs/zh_CN: add core-api index.rst translation docs/zh_CN: add core-api irq index.rst translation docs/zh_CN: add core-api irq irqflags-tracing.rst translation docs/zh_CN: add core-api irq irq-domain.rst translation docs/zh_CN: add core-api irq irq-affinity.rst translation docs/zh_CN: add core-api irq concepts.rst translation docs: sphinx-pre-install: don't barf on beta Sphinx releases scripts: kernel-doc: improve parsing for kernel-doc comments syntax docs/zh_CN: two minor fixes in zh_CN/doc-guide/ Documentation: dev-tools: Add Testing Overview docs/zh_CN: add translations in zh_CN/dev-tools/gcov docs: reporting-issues: make people CC the regressions list MAINTAINERS: add regressions mailing list doc:it_IT: align Italian documentation docs/zh_CN: sync reporting-issues.rst ...
2021-04-15Documentation: dev-tools: Add Testing OverviewDavid Gow2-0/+121
The kernel now has a number of testing and debugging tools, and we've seen a bit of confusion about what the differences between them are. Add a basic documentation outlining the testing tools, when to use each, and how they interact. This is a pretty quick overview rather than the idealised "kernel testing guide" that'd probably be optimal, but given the number of times questions like "When do you use KUnit and when do you use Kselftest?" are being asked, it seemed worth at least having something. Hopefully this can form the basis for more detailed documentation later. Signed-off-by: David Gow <[email protected]> Reviewed-by: Marco Elver <[email protected]> Reviewed-by: Daniel Latypov <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Jonathan Corbet <[email protected]>
2021-04-11kasan: Add KASAN mode kernel parameterVincenzo Frascino1-0/+9
Architectures supported by KASAN_HW_TAGS can provide a sync or async mode of execution. On an MTE enabled arm64 hw for example this can be identified with the synchronous or asynchronous tagging mode of execution. In synchronous mode, an exception is triggered if a tag check fault occurs. In asynchronous mode, if a tag check fault occurs, the TFSR_EL1 register is updated asynchronously. The kernel checks the corresponding bits periodically. KASAN requires a specific kernel command line parameter to make use of this hw features. Add KASAN HW execution mode kernel command line parameter. Note: This patch adds the kasan.mode kernel parameter and the sync/async kernel command line options to enable the described features. [ Add a new var instead of exposing kasan_arg_mode to be consistent with flags for other command line arguments. ] Cc: Dmitry Vyukov <[email protected]> Cc: Andrey Ryabinin <[email protected]> Cc: Alexander Potapenko <[email protected]> Cc: Andrey Konovalov <[email protected]> Reviewed-by: Andrey Konovalov <[email protected]> Acked-by: Catalin Marinas <[email protected]> Acked-by: Andrey Konovalov <[email protected]> Tested-by: Andrey Konovalov <[email protected]> Signed-off-by: Vincenzo Frascino <[email protected]> Signed-off-by: Andrey Konovalov <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Catalin Marinas <[email protected]>
2021-04-08docs/gcov: Convert two tags to ref in dev-tools/gov.rstWu XiangCheng1-2/+6
Htmldocs does not display the chapter number, convert the two manual chapter number tags to ref tags. Signed-off-by: Wu XiangCheng <[email protected]> Acked-by: Peter Oberparleiter <[email protected]> Link: https://lore.kernel.org/r/20210403113752.GA32236@mipc Signed-off-by: Jonathan Corbet <[email protected]>
2021-04-07Documentation: kunit: add tips for using current->kunit_testDaniel Latypov1-2/+76
As of commit 359a376081d4 ("kunit: support failure from dynamic analysis tools"), we can use current->kunit_test to find the current kunit test. Mention this in tips.rst and give an example of how this can be used in conjunction with `test->priv` to pass around state and specifically implement something like mocking. There's a lot more we could go into on that topic, but given that example is already longer than every other "tip" on this page, we just point to the API docs and leave filling in the blanks as an exercise to the reader. Also give an example of kunit_fail_current_test(). Signed-off-by: Daniel Latypov <[email protected]> Reviewed-by: Brendan Higgins <[email protected]> Signed-off-by: Shuah Khan <[email protected]>
2021-04-02Documentation: kselftest: fix path to test module filesAntonio Terceiro1-2/+2
The top-level kselftest directory is not called kselftest, but selftests. Signed-off-by: Antonio Terceiro <[email protected]> Cc: Shuah Khan <[email protected]> Cc: Jonathan Corbet <[email protected]> Signed-off-by: Shuah Khan <[email protected]>
2021-03-25docs: document all error message types in checkpatchDwaipayan Ray1-38/+280
All the error message types now have a verbose description. Also there are two new groups of message types: - Macros, Attributes and Symbols - Functions and Variables Rearrange the message types to fit these new groups as needed. Signed-off-by: Dwaipayan Ray <[email protected]> Reviewed-by: Lukas Bulwahn <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Jonathan Corbet <[email protected]>
2021-03-08kcsan: Add missing license and copyright headersMarco Elver1-0/+3
Adds missing license and/or copyright headers for KCSAN source files. Signed-off-by: Marco Elver <[email protected]> Signed-off-by: Paul E. McKenney <[email protected]>
2021-03-06docs: add documentation for checkpatchDwaipayan Ray2-0/+514
Add documentation for kernel script checkpatch.pl. This documentation is also parsed by checkpatch to enable a verbose mode. The checkpatch message types are grouped by usage. Under each group the types are described briefly. 34 of such types are documented. Signed-off-by: Dwaipayan Ray <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Jonathan Corbet <[email protected]>
2021-02-26kasan: clarify that only first bug is reported in HW_TAGSAndrey Konovalov1-2/+6
Hwardware tag-based KASAN only reports the first found bug. After that MTE tag checking gets disabled. Clarify this in comments and documentation. Link: https://lkml.kernel.org/r/00383ba88a47c3f8342d12263c24bdf95527b07d.1612546384.git.andreyknvl@google.com Signed-off-by: Andrey Konovalov <[email protected]> Reviewed-by: Marco Elver <[email protected]> Cc: Alexander Potapenko <[email protected]> Cc: Andrey Ryabinin <[email protected]> Cc: Branislav Rankov <[email protected]> Cc: Catalin Marinas <[email protected]> Cc: Dmitry Vyukov <[email protected]> Cc: Evgenii Stepanov <[email protected]> Cc: Kevin Brodsky <[email protected]> Cc: Peter Collingbourne <[email protected]> Cc: Vincenzo Frascino <[email protected]> Cc: Will Deacon <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2021-02-26kfence: report sensitive information based on no_hash_pointersMarco Elver1-4/+4
We cannot rely on CONFIG_DEBUG_KERNEL to decide if we're running a "debug kernel" where we can safely show potentially sensitive information in the kernel log. Instead, simply rely on the newly introduced "no_hash_pointers" to print unhashed kernel pointers, as well as decide if our reports can include other potentially sensitive information such as registers and corrupted bytes. Link: https://lkml.kernel.org/r/[email protected] Signed-off-by: Marco Elver <[email protected]> Cc: Timur Tabi <[email protected]> Cc: Alexander Potapenko <[email protected]> Cc: Dmitry Vyukov <[email protected]> Cc: Andrey Konovalov <[email protected]> Cc: Jann Horn <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2021-02-26kfence: add test suiteMarco Elver1-6/+6
Add KFENCE test suite, testing various error detection scenarios. Makes use of KUnit for test organization. Since KFENCE's interface to obtain error reports is via the console, the test verifies that KFENCE outputs expected reports to the console. [[email protected]: fix typo in test] Link: https://lkml.kernel.org/r/[email protected] [[email protected]: show access type in report] Link: https://lkml.kernel.org/r/[email protected] Link: https://lkml.kernel.org/r/[email protected] Signed-off-by: Alexander Potapenko <[email protected]> Signed-off-by: Marco Elver <[email protected]> Reviewed-by: Dmitry Vyukov <[email protected]> Co-developed-by: Alexander Potapenko <[email protected]> Reviewed-by: Jann Horn <[email protected]> Cc: Andrey Konovalov <[email protected]> Cc: Andrey Ryabinin <[email protected]> Cc: Andy Lutomirski <[email protected]> Cc: Borislav Petkov <[email protected]> Cc: Catalin Marinas <[email protected]> Cc: Christopher Lameter <[email protected]> Cc: Dave Hansen <[email protected]> Cc: David Rientjes <[email protected]> Cc: Eric Dumazet <[email protected]> Cc: Greg Kroah-Hartman <[email protected]> Cc: Hillf Danton <[email protected]> Cc: "H. Peter Anvin" <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: Joern Engel <[email protected]> Cc: Jonathan Corbet <[email protected]> Cc: Joonsoo Kim <[email protected]> Cc: Kees Cook <[email protected]> Cc: Mark Rutland <[email protected]> Cc: Paul E. McKenney <[email protected]> Cc: Pekka Enberg <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: SeongJae Park <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: Vlastimil Babka <[email protected]> Cc: Will Deacon <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2021-02-26kfence, Documentation: add KFENCE documentationMarco Elver2-0/+299
Add KFENCE documentation in dev-tools/kfence.rst, and add to index. [[email protected]: add missing copyright header to documentation] Link: https://lkml.kernel.org/r/[email protected] Link: https://lkml.kernel.org/r/[email protected] Signed-off-by: Alexander Potapenko <[email protected]> Signed-off-by: Marco Elver <[email protected]> Reviewed-by: Dmitry Vyukov <[email protected]> Co-developed-by: Alexander Potapenko <[email protected]> Reviewed-by: Jann Horn <[email protected]> Cc: Andrey Konovalov <[email protected]> Cc: Andrey Ryabinin <[email protected]> Cc: Andy Lutomirski <[email protected]> Cc: Borislav Petkov <[email protected]> Cc: Catalin Marinas <[email protected]> Cc: Christopher Lameter <[email protected]> Cc: Dave Hansen <[email protected]> Cc: David Rientjes <[email protected]> Cc: Eric Dumazet <[email protected]> Cc: Greg Kroah-Hartman <[email protected]> Cc: Hillf Danton <[email protected]> Cc: "H. Peter Anvin" <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: Joern Engel <[email protected]> Cc: Jonathan Corbet <[email protected]> Cc: Joonsoo Kim <[email protected]> Cc: Kees Cook <[email protected]> Cc: Mark Rutland <[email protected]> Cc: Paul E. McKenney <[email protected]> Cc: Pekka Enberg <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: SeongJae Park <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: Vlastimil Babka <[email protected]> Cc: Will Deacon <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2021-02-24kasan: rename CONFIG_TEST_KASAN_MODULEAndrey Konovalov1-4/+4
Rename CONFIG_TEST_KASAN_MODULE to CONFIG_KASAN_MODULE_TEST. This naming is more consistent with the existing CONFIG_KASAN_KUNIT_TEST. Link: https://linux-review.googlesource.com/id/Id347dfa5fe8788b7a1a189863e039f409da0ae5f Link: https://lkml.kernel.org/r/f08250246683981bcf8a094fbba7c361995624d2.1610733117.git.andreyknvl@google.com Signed-off-by: Andrey Konovalov <[email protected]> Reviewed-by: Marco Elver <[email protected]> Reviewed-by: Alexander Potapenko <[email protected]> Cc: Andrey Ryabinin <[email protected]> Cc: Branislav Rankov <[email protected]> Cc: Catalin Marinas <[email protected]> Cc: Dmitry Vyukov <[email protected]> Cc: Evgenii Stepanov <[email protected]> Cc: Kevin Brodsky <[email protected]> Cc: Peter Collingbourne <[email protected]> Cc: Vincenzo Frascino <[email protected]> Cc: Will Deacon <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2021-02-24kasan: clarify HW_TAGS impact on TBIAndrey Konovalov1-5/+11
Mention in the documentation that enabling CONFIG_KASAN_HW_TAGS always results in in-kernel TBI (Top Byte Ignore) being enabled. Also do a few minor documentation cleanups. Link: https://linux-review.googlesource.com/id/Iba2a6697e3c6304cb53f89ec61dedc77fa29e3ae Link: https://lkml.kernel.org/r/3b4ea6875bb14d312092ad14ac55cb456c83c08e.1610733117.git.andreyknvl@google.com Signed-off-by: Andrey Konovalov <[email protected]> Reviewed-by: Marco Elver <[email protected]> Reviewed-by: Alexander Potapenko <[email protected]> Cc: Andrey Ryabinin <[email protected]> Cc: Branislav Rankov <[email protected]> Cc: Catalin Marinas <[email protected]> Cc: Dmitry Vyukov <[email protected]> Cc: Evgenii Stepanov <[email protected]> Cc: Kevin Brodsky <[email protected]> Cc: Peter Collingbourne <[email protected]> Cc: Vincenzo Frascino <[email protected]> Cc: Will Deacon <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2021-02-22Merge tag 'linux-kselftest-kunit-5.12-rc1' of ↵Linus Torvalds3-2/+122
git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest Pull KUnit updates from Shuah Khan - support for filtering test suites using glob from Daniel Latypov. "kunit_filter.glob" command line option is passed to the UML kernel, which currently only supports filtering by suite name. This support allows running different subsets of tests, e.g. $ ./tools/testing/kunit/kunit.py build $ ./tools/testing/kunit/kunit.py exec 'list*' $ ./tools/testing/kunit/kunit.py exec 'kunit*' - several fixes and cleanups also from Daniel Latypov. * tag 'linux-kselftest-kunit-5.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: kunit: tool: fix unintentional statefulness in run_kernel() kunit: tool: add support for filtering suites by glob kunit: add kunit.filter_glob cmdline option to filter suites kunit: don't show `1 == 1` in failed assertion messages kunit: make kunit_tool accept optional path to .kunitconfig fragment Documentation: kunit: add tips.rst for small examples KUnit: Docs: make start.rst example Kconfig follow style.rst kunit: tool: simplify kconfig is_subset_of() logic minor: kunit: tool: fix unit test so it can run from non-root dir kunit: tool: use `with open()` in unit test kunit: tool: stop using bare asserts in unit test kunit: tool: fix unit test cleanup handling
2021-02-09kasan: fix stack traces dependency for HW_TAGSAndrey Konovalov1-2/+1
Currently, whether the alloc/free stack traces collection is enabled by default for hardware tag-based KASAN depends on CONFIG_DEBUG_KERNEL. The intention for this dependency was to only enable collection on slow debug kernels due to a significant perf and memory impact. As it turns out, CONFIG_DEBUG_KERNEL is not considered a debug option and is enabled on many productions kernels including Android and Ubuntu. As the result, this dependency is pointless and only complicates the code and documentation. Having stack traces collection disabled by default would make the hardware mode work differently to to the software ones, which is confusing. This change removes the dependency and enables stack traces collection by default. Looking into the future, this default might makes sense for production kernels, assuming we implement a fast stack trace collection approach. Link: https://lkml.kernel.org/r/6678d77ceffb71f1cff2cf61560e2ffe7bb6bfe9.1612808820.git.andreyknvl@google.com Signed-off-by: Andrey Konovalov <[email protected]> Reviewed-by: Marco Elver <[email protected]> Cc: Catalin Marinas <[email protected]> Cc: Vincenzo Frascino <[email protected]> Cc: Dmitry Vyukov <[email protected]> Cc: Alexander Potapenko <[email protected]> Cc: Will Deacon <[email protected]> Cc: Andrey Ryabinin <[email protected]> Cc: Peter Collingbourne <[email protected]> Cc: Evgenii Stepanov <[email protected]> Cc: Branislav Rankov <[email protected]> Cc: Kevin Brodsky <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2021-02-08Documentation: kunit: add tips.rst for small examplesDaniel Latypov3-1/+120
./usage.rst contains fairly long examples and explanations of things like how to fake a class and how to use parameterized tests (and how you could do table-driven tests yourself). It's not exactly necessary information, so we add a new page with more digestible tips like "use kunit_kzalloc() instead of kzalloc() so you don't have to worry about calling kfree() yourself" and the like. Change start.rst to point users to this new page first and let them know that usage.rst is more of optional further reading. Signed-off-by: Daniel Latypov <[email protected]> Reviewed-by: Brendan Higgins <[email protected]> Signed-off-by: Shuah Khan <[email protected]>
2021-02-08KUnit: Docs: make start.rst example Kconfig follow style.rstDaniel Latypov1-1/+2
The primary change is that we want to encourage people to respect KUNIT_ALL_TESTS to make it easy to run all the relevant tests for a given config. Signed-off-by: Daniel Latypov <[email protected]> Reviewed-by: Brendan Higgins <[email protected]> Signed-off-by: Shuah Khan <[email protected]>
2021-01-24kasan: fix HW_TAGS boot parametersAndrey Konovalov1-21/+6
The initially proposed KASAN command line parameters are redundant. This change drops the complex "kasan.mode=off/prod/full" parameter and adds a simpler kill switch "kasan=off/on" instead. The new parameter together with the already existing ones provides a cleaner way to express the same set of features. The full set of parameters with this change: kasan=off/on - whether KASAN is enabled kasan.fault=report/panic - whether to only print a report or also panic kasan.stacktrace=off/on - whether to collect alloc/free stack traces Default values: kasan=on kasan.fault=report kasan.stacktrace=on (if CONFIG_DEBUG_KERNEL=y) kasan.stacktrace=off (otherwise) Link: https://linux-review.googlesource.com/id/Ib3694ed90b1e8ccac6cf77dfd301847af4aba7b8 Link: https://lkml.kernel.org/r/4e9c4a4bdcadc168317deb2419144582a9be6e61.1610736745.git.andreyknvl@google.com Signed-off-by: Andrey Konovalov <[email protected]> Reviewed-by: Vincenzo Frascino <[email protected]> Reviewed-by: Marco Elver <[email protected]> Cc: Dmitry Vyukov <[email protected]> Cc: Alexander Potapenko <[email protected]> Cc: Catalin Marinas <[email protected]> Cc: Will Deacon <[email protected]> Cc: Andrey Ryabinin <[email protected]> Cc: Peter Collingbourne <[email protected]> Cc: Evgenii Stepanov <[email protected]> Cc: Branislav Rankov <[email protected]> Cc: Kevin Brodsky <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2021-01-15Documentation: kunit: include example of a parameterized testDaniel Latypov1-0/+57
Commit fadb08e7c750 ("kunit: Support for Parameterized Testing") introduced support but lacks documentation for how to use it. This patch builds on commit 1f0e943df68a ("Documentation: kunit: provide guidance for testing many inputs") to show a minimal example of the new feature. Signed-off-by: Daniel Latypov <[email protected]> Reviewed-by: David Gow <[email protected]> Tested-by: Brendan Higgins <[email protected]> Acked-by: Brendan Higgins <[email protected]> Signed-off-by: Shuah Khan <[email protected]>
2020-12-22Merge branch 'akpm' (patches from Andrew)Linus Torvalds1-89/+173
Merge KASAN updates from Andrew Morton. This adds a new hardware tag-based mode to KASAN. The new mode is similar to the existing software tag-based KASAN, but relies on arm64 Memory Tagging Extension (MTE) to perform memory and pointer tagging (instead of shadow memory and compiler instrumentation). By Andrey Konovalov and Vincenzo Frascino. * emailed patches from Andrew Morton <[email protected]>: (60 commits) kasan: update documentation kasan, mm: allow cache merging with no metadata kasan: sanitize objects when metadata doesn't fit kasan: clarify comment in __kasan_kfree_large kasan: simplify assign_tag and set_tag calls kasan: don't round_up too much kasan, mm: rename kasan_poison_kfree kasan, mm: check kasan_enabled in annotations kasan: add and integrate kasan boot parameters kasan: inline (un)poison_range and check_invalid_free kasan: open-code kasan_unpoison_slab kasan: inline random_tag for HW_TAGS kasan: inline kasan_reset_tag for tag-based modes kasan: remove __kasan_unpoison_stack kasan: allow VMAP_STACK for HW_TAGS mode kasan, arm64: unpoison stack only with CONFIG_KASAN_STACK kasan: introduce set_alloc_info kasan: rename get_alloc/free_info kasan: simplify quarantine_put call site kselftest/arm64: check GCR_EL1 after context switch ...
2020-12-22Merge tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linuxLinus Torvalds1-2/+2
Pull ARM updates from Russell King: - Rework phys/virt translation - Add KASan support - Move DT out of linear map region - Use more PC-relative addressing in assembly - Remove FP emulation handling while in kernel mode - Link with '-z norelro' - remove old check for GCC <= 4.2 in ARM unwinder code - disable big endian if using clang's linker * tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm: (46 commits) ARM: 9027/1: head.S: explicitly map DT even if it lives in the first physical section ARM: 9038/1: Link with '-z norelro' ARM: 9037/1: uncompress: Add OF_DT_MAGIC macro ARM: 9036/1: uncompress: Fix dbgadtb size parameter name ARM: 9035/1: uncompress: Add be32tocpu macro ARM: 9033/1: arm/smp: Drop the macro S(x,s) ARM: 9032/1: arm/mm: Convert PUD level pgtable helper macros into functions ARM: 9031/1: hyp-stub: remove unused .L__boot_cpu_mode_offset symbol ARM: 9044/1: vfp: use undef hook for VFP support detection ARM: 9034/1: __div64_32(): straighten up inline asm constraints ARM: 9030/1: entry: omit FP emulation for UND exceptions taken in kernel mode ARM: 9029/1: Make iwmmxt.S support Clang's integrated assembler ARM: 9028/1: disable KASAN in call stack capturing routines ARM: 9026/1: unwind: remove old check for GCC <= 4.2 ARM: 9025/1: Kconfig: CPU_BIG_ENDIAN depends on !LD_IS_LLD ARM: 9024/1: Drop useless cast of "u64" to "long long" ARM: 9023/1: Spelling s/mmeory/memory/ ARM: 9022/1: Change arch/arm/lib/mem*.S to use WEAK instead of .weak ARM: kvm: replace open coded VA->PA calculations with adr_l call ARM: head.S: use PC relative insn sequence to calculate PHYS_OFFSET ...
2020-12-22kasan: update documentationAndrey Konovalov1-69/+115
This change updates KASAN documentation to reflect the addition of boot parameters and also reworks and clarifies some of the existing sections, in particular: defines what a memory granule is, mentions quarantine, makes Kunit section more readable. Link: https://lkml.kernel.org/r/748daf013e17d925b0fe00c1c3b5dce726dd2430.1606162397.git.andreyknvl@google.com Link: https://linux-review.googlesource.com/id/Ib1f83e91be273264b25f42b04448ac96b858849f Signed-off-by: Andrey Konovalov <[email protected]> Reviewed-by: Dmitry Vyukov <[email protected]> Reviewed-by: Marco Elver <[email protected]> Tested-by: Vincenzo Frascino <[email protected]> Cc: Alexander Potapenko <[email protected]> Cc: Andrey Ryabinin <[email protected]> Cc: Branislav Rankov <[email protected]> Cc: Catalin Marinas <[email protected]> Cc: Evgenii Stepanov <[email protected]> Cc: Kevin Brodsky <[email protected]> Cc: Vasily Gorbik <[email protected]> Cc: Will Deacon <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2020-12-22kasan: add documentation for hardware tag-based modeAndrey Konovalov1-21/+59
Add documentation for hardware tag-based KASAN mode and also add some clarifications for software tag-based mode. Link: https://lkml.kernel.org/r/20ed1d387685e89fc31be068f890f070ef9fd5d5.1606161801.git.andreyknvl@google.com Signed-off-by: Andrey Konovalov <[email protected]> Signed-off-by: Vincenzo Frascino <[email protected]> Reviewed-by: Marco Elver <[email protected]> Reviewed-by: Alexander Potapenko <[email protected]> Tested-by: Vincenzo Frascino <[email protected]> Cc: Andrey Ryabinin <[email protected]> Cc: Branislav Rankov <[email protected]> Cc: Catalin Marinas <[email protected]> Cc: Dmitry Vyukov <[email protected]> Cc: Evgenii Stepanov <[email protected]> Cc: Kevin Brodsky <[email protected]> Cc: Vasily Gorbik <[email protected]> Cc: Will Deacon <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2020-12-22kasan: rename KASAN_SHADOW_* to KASAN_GRANULE_*Andrey Konovalov1-1/+1
This is a preparatory commit for the upcoming addition of a new hardware tag-based (MTE-based) KASAN mode. The new mode won't be using shadow memory, but will still use the concept of memory granules. Each memory granule maps to a single metadata entry: 8 bytes per one shadow byte for generic mode, 16 bytes per one shadow byte for software tag-based mode, and 16 bytes per one allocation tag for hardware tag-based mode. Rename KASAN_SHADOW_SCALE_SIZE to KASAN_GRANULE_SIZE, and KASAN_SHADOW_MASK to KASAN_GRANULE_MASK. Also use MASK when used as a mask, otherwise use SIZE. No functional changes. Link: https://lkml.kernel.org/r/939b5754e47f528a6e6a6f28ffc5815d8d128033.1606161801.git.andreyknvl@google.com Signed-off-by: Andrey Konovalov <[email protected]> Signed-off-by: Vincenzo Frascino <[email protected]> Reviewed-by: Marco Elver <[email protected]> Reviewed-by: Alexander Potapenko <[email protected]> Tested-by: Vincenzo Frascino <[email protected]> Cc: Andrey Ryabinin <[email protected]> Cc: Branislav Rankov <[email protected]> Cc: Catalin Marinas <[email protected]> Cc: Dmitry Vyukov <[email protected]> Cc: Evgenii Stepanov <[email protected]> Cc: Kevin Brodsky <[email protected]> Cc: Vasily Gorbik <[email protected]> Cc: Will Deacon <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2020-12-16Merge tag 'linux-kselftest-kunit-5.11-rc1' of ↵Linus Torvalds1-6/+77
git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest Pull Kunit updates from Shuah Khan: - documentation update and fix to kunit_tool to parse diagnostic messages correctly from David Gow - Support for Parameterized Testing and fs/ext4 test updates to use KUnit parameterized testing feature from Arpitha Raghunandan - Helper to derive file names depending on --build_dir argument from Andy Shevchenko * tag 'linux-kselftest-kunit-5.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: fs: ext4: Modify inode-test.c to use KUnit parameterized testing feature kunit: Support for Parameterized Testing kunit: kunit_tool: Correctly parse diagnostic messages Documentation: kunit: provide guidance for testing many inputs kunit: Introduce get_file_path() helper
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