blaster4385/linux-IllusionX/tools/testing/selftests/mm/run_vmtests.sh, branch v6.13

Merge tag 'mm-stable-2024-11-18-19-27' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

2024-11-23T17:58:07Z

Pull MM updates from Andrew Morton: - The series "zram: optimal post-processing target selection" from Sergey Senozhatsky improves zram's post-processing selection algorithm. This leads to improved memory savings. - Wei Yang has gone to town on the mapletree code, contributing several series which clean up the implementation: - "refine mas_mab_cp()" - "Reduce the space to be cleared for maple_big_node" - "maple_tree: simplify mas_push_node()" - "Following cleanup after introduce mas_wr_store_type()" - "refine storing null" - The series "selftests/mm: hugetlb_fault_after_madv improvements" from David Hildenbrand fixes this selftest for s390. - The series "introduce pte_offset_map_{ro|rw}_nolock()" from Qi Zheng implements some rationaizations and cleanups in the page mapping code. - The series "mm: optimize shadow entries removal" from Shakeel Butt optimizes the file truncation code by speeding up the handling of shadow entries. - The series "Remove PageKsm()" from Matthew Wilcox completes the migration of this flag over to being a folio-based flag. - The series "Unify hugetlb into arch_get_unmapped_area functions" from Oscar Salvador implements a bunch of consolidations and cleanups in the hugetlb code. - The series "Do not shatter hugezeropage on wp-fault" from Dev Jain takes away the wp-fault time practice of turning a huge zero page into small pages. Instead we replace the whole thing with a THP. More consistent cleaner and potentiall saves a large number of pagefaults. - The series "percpu: Add a test case and fix for clang" from Andy Shevchenko enhances and fixes the kernel's built in percpu test code. - The series "mm/mremap: Remove extra vma tree walk" from Liam Howlett optimizes mremap() by avoiding doing things which we didn't need to do. - The series "Improve the tmpfs large folio read performance" from Baolin Wang teaches tmpfs to copy data into userspace at the folio size rather than as individual pages. A 20% speedup was observed. - The series "mm/damon/vaddr: Fix issue in damon_va_evenly_split_region()" fro Zheng Yejian fixes DAMON splitting. - The series "memcg-v1: fully deprecate charge moving" from Shakeel Butt removes the long-deprecated memcgv2 charge moving feature. - The series "fix error handling in mmap_region() and refactor" from Lorenzo Stoakes cleanup up some of the mmap() error handling and addresses some potential performance issues. - The series "x86/module: use large ROX pages for text allocations" from Mike Rapoport teaches x86 to use large pages for read-only-execute module text. - The series "page allocation tag compression" from Suren Baghdasaryan is followon maintenance work for the new page allocation profiling feature. - The series "page->index removals in mm" from Matthew Wilcox remove most references to page->index in mm/. A slow march towards shrinking struct page. - The series "damon/{self,kunit}tests: minor fixups for DAMON debugfs interface tests" from Andrew Paniakin performs maintenance work for DAMON's self testing code. - The series "mm: zswap swap-out of large folios" from Kanchana Sridhar improves zswap's batching of compression and decompression. It is a step along the way towards using Intel IAA hardware acceleration for this zswap operation. - The series "kasan: migrate the last module test to kunit" from Sabyrzhan Tasbolatov completes the migration of the KASAN built-in tests over to the KUnit framework. - The series "implement lightweight guard pages" from Lorenzo Stoakes permits userapace to place fault-generating guard pages within a single VMA, rather than requiring that multiple VMAs be created for this. Improved efficiencies for userspace memory allocators are expected. - The series "memcg: tracepoint for flushing stats" from JP Kobryn uses tracepoints to provide increased visibility into memcg stats flushing activity. - The series "zram: IDLE flag handling fixes" from Sergey Senozhatsky fixes a zram buglet which potentially affected performance. - The series "mm: add more kernel parameters to control mTHP" from Maíra Canal enhances our ability to control/configuremultisize THP from the kernel boot command line. - The series "kasan: few improvements on kunit tests" from Sabyrzhan Tasbolatov has a couple of fixups for the KASAN KUnit tests. - The series "mm/list_lru: Split list_lru lock into per-cgroup scope" from Kairui Song optimizes list_lru memory utilization when lockdep is enabled. * tag 'mm-stable-2024-11-18-19-27' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (215 commits) cma: enforce non-zero pageblock_order during cma_init_reserved_mem() mm/kfence: add a new kunit test test_use_after_free_read_nofault() zram: fix NULL pointer in comp_algorithm_show() memcg/hugetlb: add hugeTLB counters to memcg vmstat: call fold_vm_zone_numa_events() before show per zone NUMA event mm: mmap_lock: check trace_mmap_lock_$type_enabled() instead of regcount zram: ZRAM_DEF_COMP should depend on ZRAM MAINTAINERS/MEMORY MANAGEMENT: add document files for mm Docs/mm/damon: recommend academic papers to read and/or cite mm: define general function pXd_init() kmemleak: iommu/iova: fix transient kmemleak false positive mm/list_lru: simplify the list_lru walk callback function mm/list_lru: split the lock to per-cgroup scope mm/list_lru: simplify reparenting and initial allocation mm/list_lru: code clean up for reparenting mm/list_lru: don't export list_lru_add mm/list_lru: don't pass unnecessary key parameters kasan: add kunit tests for kmalloc_track_caller, kmalloc_node_track_caller kasan: change kasan_atomics kunit test as KUNIT_CASE_SLOW kasan: use EXPORT_SYMBOL_IF_KUNIT to export symbols ...

selftests/mm: skip virtual_address_range tests on riscv

2024-11-11T21:09:42Z

RISC-V doesn't currently have the behavior of restricting the virtual address space which virtual_address_range tests check, this will cause the tests fail. So lets disable the whole test suite for riscv64 for now, not build it and run_vmtests.sh will skip it if it is not present. Link: https://lkml.kernel.org/r/20241008094141.549248-5-zhangchunyan@iscas.ac.cn Signed-off-by: Chunyan Zhang Reviewed-by: Charlie Jenkins Acked-by: Palmer Dabbelt Cc: Alexandre Ghiti Cc: Paul Walmsley Cc: Shuah Khan Signed-off-by: Andrew Morton

mm: page_frag: add a test module for page_frag

2024-11-11T18:56:26Z

The testing is done by ensuring that the fragment allocated from a frag_frag_cache instance is pushed into a ptr_ring instance in a kthread binded to a specified cpu, and a kthread binded to a specified cpu will pop the fragment from the ptr_ring and free the fragment. CC: Andrew Morton CC: Linux-MM Signed-off-by: Yunsheng Lin Reviewed-by: Alexander Duyck Link: https://patch.msgid.link/20241028115343.3405838-2-linyunsheng@huawei.com Signed-off-by: Jakub Kicinski

selftests/mm: remove unnecessary ia64 code and comment

2024-09-04T04:15:38Z

IA64 has gone with commit cf8e8658100d ("arch: Remove Itanium (IA-64) architecture"), so remove unnecessary ia64 special mm code and comment in selftests too. Link: https://lkml.kernel.org/r/20240819130609.3386195-1-tujinjiang@huawei.com Signed-off-by: Jinjiang Tu Cc: Kefeng Wang Cc: Mike Rapoport Cc: Nanyong Sun Signed-off-by: Andrew Morton

selftests: memfd_secret: don't build memfd_secret test on unsupported arches

2024-08-16T05:16:15Z

[1] mentions that memfd_secret is only supported on arm64, riscv, x86 and x86_64 for now. It doesn't support other architectures. I found the build error on arm and decided to send the fix as it was creating noise on KernelCI: memfd_secret.c: In function 'memfd_secret': memfd_secret.c:42:24: error: '__NR_memfd_secret' undeclared (first use in this function); did you mean 'memfd_secret'? 42 | return syscall(__NR_memfd_secret, flags); | ^~~~~~~~~~~~~~~~~ | memfd_secret Hence I'm adding condition that memfd_secret should only be compiled on supported architectures. Also check in run_vmtests script if memfd_secret binary is present before executing it. Link: https://lkml.kernel.org/r/20240812061522.1933054-1-usama.anjum@collabora.com Link: https://lore.kernel.org/all/20210518072034.31572-7-rppt@kernel.org/ [1] Link: https://lkml.kernel.org/r/20240809075642.403247-1-usama.anjum@collabora.com Fixes: 76fe17ef588a ("secretmem: test: add basic selftest for memfd_secret(2)") Signed-off-by: Muhammad Usama Anjum Reviewed-by: Shuah Khan Acked-by: Mike Rapoport (Microsoft) Cc: Albert Ou Cc: James Bottomley Cc: Mike Rapoport (Microsoft) Cc: Palmer Dabbelt Cc: Paul Walmsley Cc: Signed-off-by: Andrew Morton

selftest/mm: test enable_soft_offline behaviors

2024-07-05T01:06:00Z

Add regression and new tests when hugepage has correctable memory errors, and how userspace wants to deal with it: * if enable_soft_offline=1, mapped hugepage is soft offlined * if enable_soft_offline=0, mapped hugepage is intact Free hugepages case is not explicitly covered by the tests. Hugepage having corrected memory errors is emulated with MADV_SOFT_OFFLINE. [jiaqiyan@google.com: v7] Link: https://lkml.kernel.org/r/20240628205958.2845610-4-jiaqiyan@google.com Link: https://lkml.kernel.org/r/20240626050818.2277273-4-jiaqiyan@google.com Signed-off-by: Jiaqi Yan Acked-by: Miaohe Lin Acked-by: David Rientjes Cc: Frank van der Linden Cc: Jane Chu Cc: Jonathan Corbet Cc: Lance Yang Cc: Muchun Song Cc: Naoya Horiguchi Cc: Oscar Salvador Cc: Randy Dunlap Cc: Shuah Khan Signed-off-by: Andrew Morton

selftest: mm: Test if hugepage does not get leaked during __bio_release_pages()

2024-07-04T02:29:59Z

Commit 1b151e2435fc ("block: Remove special-casing of compound pages") caused a change in behaviour when releasing the pages if the buffer does not start at the beginning of the page. This was because the calculation of the number of pages to release was incorrect. This was fixed by commit 38b43539d64b ("block: Fix page refcounts for unaligned buffers in __bio_release_pages()"). We pin the user buffer during direct I/O writes. If this buffer is a hugepage, bio_release_page() will unpin it and decrement all references and pin counts at ->bi_end_io. However, if any references to the hugepage remain post-I/O, the hugepage will not be freed upon unmap, leading to a memory leak. This patch verifies that a hugepage, used as a user buffer for DIO operations, is correctly freed upon unmapping, regardless of whether the offsets are aligned or unaligned w.r.t page boundary. Test Result Fail Scenario (Without the fix) -------------------------------------------------------- []# ./hugetlb_dio TAP version 13 1..4 No. Free pages before allocation : 7 No. Free pages after munmap : 7 ok 1 : Huge pages freed successfully ! No. Free pages before allocation : 7 No. Free pages after munmap : 7 ok 2 : Huge pages freed successfully ! No. Free pages before allocation : 7 No. Free pages after munmap : 7 ok 3 : Huge pages freed successfully ! No. Free pages before allocation : 7 No. Free pages after munmap : 6 not ok 4 : Huge pages not freed! Totals: pass:3 fail:1 xfail:0 xpass:0 skip:0 error:0 Test Result PASS Scenario (With the fix) --------------------------------------------------------- []#./hugetlb_dio TAP version 13 1..4 No. Free pages before allocation : 7 No. Free pages after munmap : 7 ok 1 : Huge pages freed successfully ! No. Free pages before allocation : 7 No. Free pages after munmap : 7 ok 2 : Huge pages freed successfully ! No. Free pages before allocation : 7 No. Free pages after munmap : 7 ok 3 : Huge pages freed successfully ! No. Free pages before allocation : 7 No. Free pages after munmap : 7 ok 4 : Huge pages freed successfully ! Totals: pass:4 fail:0 xfail:0 xpass:0 skip:0 error:0 [donettom@linux.ibm.com: address review comments from Muhammad] Link: https://lkml.kernel.org/r/20240604132801.23377-1-donettom@linux.ibm.com [donettom@linux.ibm.com: add this test to run_vmtests.sh] Link: https://lkml.kernel.org/r/20240607182000.6494-1-donettom@linux.ibm.com Link: https://lkml.kernel.org/r/20240523063905.3173-1-donettom@linux.ibm.com Fixes: 38b43539d64b ("block: Fix page refcounts for unaligned buffers in __bio_release_pages()") Signed-off-by: Donet Tom Signed-off-by: Ritesh Harjani (IBM) Co-developed-by: Ritesh Harjani (IBM) Reviewed-by: Muhammad Usama Anjum Cc: David Hildenbrand Cc: Matthew Wilcox (Oracle) Cc: Mike Rapoport (IBM) Cc: Muchun Song Cc: Ritesh Harjani (IBM) Cc: Shuah Khan Cc: Tony Battersby Cc: Jens Axboe Signed-off-by: Andrew Morton

selftests/mm: run_vmtests.sh: fix hugetlb mem size calculation

2024-04-26T03:56:02Z

The script calculates a mininum required size of hugetlb memories, but it'll stop working with <1MB huge page sizes, reporting all zeros even if huge pages are available. In reality, the calculation doesn't really need to be as complicated either. Make it simpler and work for KB-level hugepages too. [peterx@redhat.com: run_vmtests.sh: fix hugetlb mem size calculation] Link: https://lkml.kernel.org/r/20240403200324.1603493-1-peterx@redhat.com Link: https://lkml.kernel.org/r/20240321215047.678172-1-peterx@redhat.com Signed-off-by: Peter Xu Reviewed-by: David Hildenbrand Reviewed-by: Muchun Song Reviewed-by: Muhammad Usama Anjum Tested-by: Ryan Roberts Cc: Nico Pache Signed-off-by: Andrew Morton

selftests: mm: protection_keys: save/restore nr_hugepages value from launch script

2024-04-25T17:07:27Z

The save/restore of nr_hugepages was added to the test itself by using the atexit() functionality. But it is broken as parent exits after creating child. Hence calling the atexit() function early. That's not it. The child exits after creating its child and so on. The parent cannot wait to get the termination status for its children as it'll keep on holding the resources until the new pkey allocation fails. It is impossible to wait for exits of all the grand and great grand children. Hence the restoring of nr_hugepages value from parent is wrong. Let's save/restore the nr_hugepages settings in the launch script instead of doing it in the test. Link: https://lkml.kernel.org/r/20240419115027.3848958-1-usama.anjum@collabora.com Fixes: c52eb6db7b7d ("selftests: mm: restore settings from only parent process") Signed-off-by: Muhammad Usama Anjum Reported-by: Joey Gouly Closes: https://lore.kernel.org/all/20240418125250.GA2941398@e124191.cambridge.arm.com Cc: Joey Gouly Cc: Shuah Khan Signed-off-by: Andrew Morton

Merge tag 'mm-nonmm-stable-2024-03-14-09-36' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

2024-03-15T01:03:09Z

Pull non-MM updates from Andrew Morton: - Kuan-Wei Chiu has developed the well-named series "lib min_heap: Min heap optimizations". - Kuan-Wei Chiu has also sped up the library sorting code in the series "lib/sort: Optimize the number of swaps and comparisons". - Alexey Gladkov has added the ability for code running within an IPC namespace to alter its IPC and MQ limits. The series is "Allow to change ipc/mq sysctls inside ipc namespace". - Geert Uytterhoeven has contributed some dhrystone maintenance work in the series "lib: dhry: miscellaneous cleanups". - Ryusuke Konishi continues nilfs2 maintenance work in the series "nilfs2: eliminate kmap and kmap_atomic calls" "nilfs2: fix kernel bug at submit_bh_wbc()" - Nathan Chancellor has updated our build tools requirements in the series "Bump the minimum supported version of LLVM to 13.0.1". - Muhammad Usama Anjum continues with the selftests maintenance work in the series "selftests/mm: Improve run_vmtests.sh". - Oleg Nesterov has done some maintenance work against the signal code in the series "get_signal: minor cleanups and fix". Plus the usual shower of singleton patches in various parts of the tree. Please see the individual changelogs for details. * tag 'mm-nonmm-stable-2024-03-14-09-36' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (77 commits) nilfs2: prevent kernel bug at submit_bh_wbc() nilfs2: fix failure to detect DAT corruption in btree and direct mappings ocfs2: enable ocfs2_listxattr for special files ocfs2: remove SLAB_MEM_SPREAD flag usage assoc_array: fix the return value in assoc_array_insert_mid_shortcut() buildid: use kmap_local_page() watchdog/core: remove sysctl handlers from public header nilfs2: use div64_ul() instead of do_div() mul_u64_u64_div_u64: increase precision by conditionally swapping a and b kexec: copy only happens before uchunk goes to zero get_signal: don't initialize ksig->info if SIGNAL_GROUP_EXIT/group_exec_task get_signal: hide_si_addr_tag_bits: fix the usage of uninitialized ksig get_signal: don't abuse ksig->info.si_signo and ksig->sig const_structs.checkpatch: add device_type Normalise "name (ad@dr)" MODULE_AUTHORs to "name " dyndbg: replace kstrdup() + strchr() with kstrdup_and_replace() list: leverage list_is_head() for list_entry_is_head() nilfs2: MAINTAINERS: drop unreachable project mirror site smp: make __smp_processor_id() 0-argument macro fat: fix uninitialized field in nostale filehandles ...