linux-dev/tools/testing/selftests/vm/Makefile, branch linus/master

Merge tag 'mm-stable-2022-05-25' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

2022-05-26T19:32:41Z

Pull MM updates from Andrew Morton: "Almost all of MM here. A few things are still getting finished off, reviewed, etc. - Yang Shi has improved the behaviour of khugepaged collapsing of readonly file-backed transparent hugepages. - Johannes Weiner has arranged for zswap memory use to be tracked and managed on a per-cgroup basis. - Munchun Song adds a /proc knob ("hugetlb_optimize_vmemmap") for runtime enablement of the recent huge page vmemmap optimization feature. - Baolin Wang contributes a series to fix some issues around hugetlb pagetable invalidation. - Zhenwei Pi has fixed some interactions between hwpoisoned pages and virtualization. - Tong Tiangen has enabled the use of the presently x86-only page_table_check debugging feature on arm64 and riscv. - David Vernet has done some fixup work on the memcg selftests. - Peter Xu has taught userfaultfd to handle write protection faults against shmem- and hugetlbfs-backed files. - More DAMON development from SeongJae Park - adding online tuning of the feature and support for monitoring of fixed virtual address ranges. Also easier discovery of which monitoring operations are available. - Nadav Amit has done some optimization of TLB flushing during mprotect(). - Neil Brown continues to labor away at improving our swap-over-NFS support. - David Hildenbrand has some fixes to anon page COWing versus get_user_pages(). - Peng Liu fixed some errors in the core hugetlb code. - Joao Martins has reduced the amount of memory consumed by device-dax's compound devmaps. - Some cleanups of the arch-specific pagemap code from Anshuman Khandual. - Muchun Song has found and fixed some errors in the TLB flushing of transparent hugepages. - Roman Gushchin has done more work on the memcg selftests. ... and, of course, many smaller fixes and cleanups. Notably, the customary million cleanup serieses from Miaohe Lin" * tag 'mm-stable-2022-05-25' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (381 commits) mm: kfence: use PAGE_ALIGNED helper selftests: vm: add the "settings" file with timeout variable selftests: vm: add "test_hmm.sh" to TEST_FILES selftests: vm: check numa_available() before operating "merge_across_nodes" in ksm_tests selftests: vm: add migration to the .gitignore selftests/vm/pkeys: fix typo in comment ksm: fix typo in comment selftests: vm: add process_mrelease tests Revert "mm/vmscan: never demote for memcg reclaim" mm/kfence: print disabling or re-enabling message include/trace/events/percpu.h: cleanup for "percpu: improve percpu_alloc_percpu event trace" include/trace/events/mmflags.h: cleanup for "tracing: incorrect gfp_t conversion" mm: fix a potential infinite loop in start_isolate_page_range() MAINTAINERS: add Muchun as co-maintainer for HugeTLB zram: fix Kconfig dependency warning mm/shmem: fix shmem folio swapoff hang cgroup: fix an error handling path in alloc_pagecache_max_30M() mm: damon: use HPAGE_PMD_SIZE tracing: incorrect isolate_mote_t cast in mm_vmscan_lru_isolate nodemask.h: fix compilation error with GCC12 ...

selftests: vm: add "test_hmm.sh" to TEST_FILES

2022-05-25T17:47:49Z

The "test_hmm.sh" file used by run_vmtests.sh dose not be installed into INSTALL_PATH. Thus run_vmtests.sh can not call it in INSTALL_PATH: --------------------------- running ./test_hmm.sh smoke --------------------------- ./run_vmtests.sh: line 74: ./test_hmm.sh: No such file or directory [FAIL] ----------------------- Add "test_hmm.sh" to TEST_FILES so that it will be installed. Link: https://lkml.kernel.org/r/20220521083825.319654-3-patrick.wang.shcn@gmail.com Signed-off-by: Patrick Wang Cc: Shuah Khan Signed-off-by: Andrew Morton

selftests: vm: add process_mrelease tests

2022-05-25T17:47:48Z

Introduce process_mrelease syscall sanity tests which include tests which expect to fail: - process_mrelease with invalid pidfd and flags inputs - process_mrelease on a live process with no pending signals and valid process_mrelease usage which is expected to succeed. Because process_mrelease has to be used against a process with a pending SIGKILL, it's possible that the process exits before process_mrelease gets called. In such cases we retry the test with a victim that allocates twice more memory up to 1GB. This would require the victim process to spend more time during exit and process_mrelease has a better chance of catching the process before it exits and succeeding. On success the test reports the amount of memory the child had to allocate for reaping to succeed. Sample output: $ mrelease_test Success reaping a child with 1MB of memory allocations On failure the test reports the failure. Sample outputs: $ mrelease_test All process_mrelease attempts failed! $ mrelease_test process_mrelease: Invalid argument Link: https://lkml.kernel.org/r/20220518204316.13131-1-surenb@google.com Signed-off-by: Suren Baghdasaryan Reviewed-by: Shuah Khan Acked-by: Christian Brauner (Microsoft) Reviewed-by: Muhammad Usama Anjum Cc: Michal Hocko Cc: David Rientjes Cc: Matthew Wilcox (Oracle) Cc: Johannes Weiner Cc: Roman Gushchin Cc: Minchan Kim Cc: "Kirill A . Shutemov" Cc: Andrea Arcangeli Cc: Christoph Hellwig Cc: Oleg Nesterov Cc: David Hildenbrand Cc: Jann Horn Cc: Shakeel Butt Cc: Peter Xu Cc: John Hubbard Signed-off-by: Andrew Morton

selftests: vm: Makefile: rename TARGETS to VMTARGETS

2022-05-10T00:34:29Z

The tools/testing/selftests/vm/Makefile uses the variable TARGETS internally to generate a list of platform-specific binary build targets suffixed with _{32,64}. When building the selftests using its own Makefile directly, such as via the following command run in a kernel tree: One receives an error such as the following: make: Entering directory '/root/linux/tools/testing/selftests' make --no-builtin-rules ARCH=x86 -C ../../.. headers_install make[1]: Entering directory '/root/linux' INSTALL ./usr/include make[1]: Leaving directory '/root/linux' make[1]: Entering directory '/root/linux/tools/testing/selftests/vm' make[1]: *** No rule to make target 'vm.c', needed by '/root/linux/tools/testing/selftests/vm/vm_64'. Stop. make[1]: Leaving directory '/root/linux/tools/testing/selftests/vm' make: *** [Makefile:175: all] Error 2 make: Leaving directory '/root/linux/tools/testing/selftests' The TARGETS variable passed to tools/testing/selftests/Makefile collides with the TARGETS used in tools/testing/selftests/vm/Makefile, so rename the latter to VMTARGETS, eliminating the collision with no functional change. Link: https://lkml.kernel.org/r/20220504213454.1282532-1-jsavitz@redhat.com Fixes: f21fda8f6453 ("selftests: vm: pkeys: fix multilib builds for x86") Signed-off-by: Joel Savitz Acked-by: Nico Pache Cc: Joel Savitz Cc: Shuah Khan Cc: Sandipan Das Cc: Dave Hansen Signed-off-by: Andrew Morton

selftests: vm: add test for Soft-Dirty PTE bit

2022-04-29T06:16:11Z

This introduces three tests: 1) Sanity check soft dirty basic semantics: allocate area, clean, dirty, check if the SD bit is flipped. 2) Check VMA reuse: validate the VM_SOFTDIRTY usage 3) Check soft-dirty on huge pages This was motivated by Will Deacon's fix commit 912efa17e512 ("mm: proc: Invalidate TLB after clearing soft-dirty page state"). I was tracking the same issue that he fixed, and this test would have caught it. Link: https://lkml.kernel.org/r/20220420084036.4101604-2-usama.anjum@collabora.com Signed-off-by: Gabriel Krisman Bertazi Signed-off-by: Muhammad Usama Anjum Co-developed-by: Muhammad Usama Anjum Cc: Will Deacon Cc: Shuah Khan Signed-off-by: Andrew Morton

selftests: vm: bring common functions to a new file

2022-04-29T06:16:11Z

Bring common functions to a new file while keeping code as much same as possible. These functions can be used in the new tests. This helps in avoiding code duplication. Link: https://lkml.kernel.org/r/20220420084036.4101604-1-usama.anjum@collabora.com Signed-off-by: Muhammad Usama Anjum Acked-by: David Hildenbrand Cc: Gabriel Krisman Bertazi Cc: Shuah Khan Cc: Will Deacon Signed-off-by: Andrew Morton

mm: add selftests for migration entries

2022-04-29T06:16:07Z

Add some basic migration tests and in particular tests that will stress both the pte and pmd migration entry wait paths. Link: https://lkml.kernel.org/r/20220324014349.229253-1-apopple@nvidia.com Signed-off-by: Alistair Popple Cc: Hugh Dickins Cc: Jan Kara Cc: "Kirill A. Shutemov" Cc: Matthew Wilcox (Oracle) Cc: Ralph Campbell Cc: Muchun Song Cc: John Hubbard Cc: Thomas Gleixner Cc: Sebastian Andrzej Siewior Cc: Shuah Khan Signed-off-by: Andrew Morton

selftests/vm: add hugetlb madvise MADV_DONTNEED MADV_REMOVE test

2022-03-25T02:06:50Z

Now that MADV_DONTNEED support for hugetlb is enabled, add corresponding tests. MADV_REMOVE has been enabled for some time, but no tests exist so add them as well. Link: https://lkml.kernel.org/r/20220215002348.128823-3-mike.kravetz@oracle.com Signed-off-by: Mike Kravetz Reviewed-by: Shuah Khan Cc: Andrea Arcangeli Cc: Axel Rasmussen Cc: David Hildenbrand Cc: Michal Hocko Cc: Mike Rapoport Cc: Mina Almasry Cc: Naoya Horiguchi Cc: Peter Xu Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

Merge tag 'linux-kselftest-next-5.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest

2022-03-23T19:53:00Z

Pull Kselftest updates from Shuah Khan: "Several build and cleanup fixes: - removing obsolete config options - removing dependency on internal kernel macros - adding config options - several build fixes related to headers and install paths" * tag 'linux-kselftest-next-5.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: (22 commits) selftests: Fix build when $(O) points to a relative path selftests: netfilter: fix a build error on openSUSE selftests: kvm: add generated file to the .gitignore selftests/exec: add generated files to .gitignore selftests: add kselftest_install to .gitignore selftests/rtc: continuously read RTC in a loop for 30s selftests/lkdtm: Add UBSAN config selftests/lkdtm: Remove dead config option selftests/exec: Rename file binfmt_script to binfmt_script.py selftests: Use -isystem instead of -I to include headers selftests: vm: remove dependecy from internal kernel macros selftests: vm: Add the uapi headers include variable selftests: mptcp: Add the uapi headers include variable selftests: net: Add the uapi headers include variable selftests: landlock: Add the uapi headers include variable selftests: kvm: Add the uapi headers include variable selftests: futex: Add the uapi headers include variable selftests: Correct the headers install path selftests: Add and export a kernel uapi headers path selftests: set the BUILD variable to absolute path ...

selftests: vm: add a hugetlb test case

2022-03-22T22:57:08Z

Since the head vmemmap page frame associated with each HugeTLB page is reused, we should hide the PG_head flag of tail struct page from the user. Add a tese case to check whether it is work properly. The test steps are as follows. 1) alloc 2MB hugeTLB 2) get each page frame 3) apply those APIs in each page frame 4) Those APIs work completely the same as before. Reading the flags of a page by /proc/kpageflags is done in stable_page_flags(), which has invoked PageHead(), PageTail(), PageCompound() and compound_head(). If those APIs work properly, the head page must have 15 and 17 bits set. And tail pages must have 16 and 17 bits set but 15 bit unset. Those flags are checked in check_page_flags(). Link: https://lkml.kernel.org/r/20211101031651.75851-5-songmuchun@bytedance.com Signed-off-by: Muchun Song Reviewed-by: Barry Song Cc: Bodeddula Balasubramaniam Cc: Chen Huang Cc: David Hildenbrand Cc: Fam Zheng Cc: Jonathan Corbet Cc: Matthew Wilcox Cc: Michal Hocko Cc: Mike Kravetz Cc: Oscar Salvador Cc: Qi Zheng Cc: Xiongchun Duan Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds