linux/lib/locking-selftest.c, branch v5.14

lockdep/selftest: Remove wait-type RCU_CALLBACK tests

2021-06-22T14:42:08Z

The problem is that rcu_callback_map doesn't have wait_types defined, and doing so would make it indistinguishable from SOFTIRQ in any case. Remove it. Fixes: 9271a40d2a14 ("lockdep/selftest: Add wait context selftests") Signed-off-by: Peter Zijlstra (Intel) Tested-by: Joerg Roedel Link: https://lore.kernel.org/r/20210617190313.384290291@infradead.org

lockdep/selftests: Fix selftests vs PROVE_RAW_LOCK_NESTING

2021-06-22T14:42:08Z

When PROVE_RAW_LOCK_NESTING=y many of the selftests FAILED because HARDIRQ context is out-of-bounds for spinlocks. Instead make the default hardware context the threaded hardirq context, which preserves the old locking rules. The wait-type specific locking selftests will have a non-threaded HARDIRQ variant. Fixes: de8f5e4f2dc1 ("lockdep: Introduce wait-type checks") Signed-off-by: Peter Zijlstra (Intel) Tested-by: Joerg Roedel Link: https://lore.kernel.org/r/20210617190313.322096283@infradead.org

locking/selftests: Add a selftest for check_irq_usage()

2021-06-22T14:42:07Z

Johannes Berg reported a lockdep problem which could be reproduced by the special test case introduced in this patch, so add it. Signed-off-by: Boqun Feng Signed-off-by: Peter Zijlstra (Intel) Link: https://lore.kernel.org/r/20210618170110.3699115-5-boqun.feng@gmail.com

locking/selftests: Add local_lock inversion tests

2021-01-14T10:20:18Z

Test the local_lock_t inversion scenarios. Signed-off-by: Peter Zijlstra (Intel)

locking/selftests: More granular debug_locks_verbose

2021-01-14T10:20:16Z

Showing all tests all the time is tiresome. Signed-off-by: Peter Zijlstra (Intel)

lockdep/selftest: Add wait context selftests

2021-01-14T10:20:16Z

These tests are added for two purposes: * Test the implementation of wait context checks and related annotations. * Semi-document the rules for wait context nesting when PROVE_RAW_LOCK_NESTING=y. The test cases are only avaible for PROVE_RAW_LOCK_NESTING=y, as wait context checking makes more sense for that configuration. Signed-off-by: Boqun Feng Signed-off-by: Peter Zijlstra (Intel) Link: https://lkml.kernel.org/r/20201208103112.2838119-5-boqun.feng@gmail.com

Merge branch 'akpm' (patches from Andrew)

2020-12-15T20:53:37Z

Merge misc updates from Andrew Morton: - a few random little subsystems - almost all of the MM patches which are staged ahead of linux-next material. I'll trickle to post-linux-next work in as the dependents get merged up. Subsystems affected by this patch series: kthread, kbuild, ide, ntfs, ocfs2, arch, and mm (slab-generic, slab, slub, dax, debug, pagecache, gup, swap, shmem, memcg, pagemap, mremap, hmm, vmalloc, documentation, kasan, pagealloc, memory-failure, hugetlb, vmscan, z3fold, compaction, oom-kill, migration, cma, page-poison, userfaultfd, zswap, zsmalloc, uaccess, zram, and cleanups). * emailed patches from Andrew Morton : (200 commits) mm: cleanup kstrto*() usage mm: fix fall-through warnings for Clang mm: slub: convert sysfs sprintf family to sysfs_emit/sysfs_emit_at mm: shmem: convert shmem_enabled_show to use sysfs_emit_at mm:backing-dev: use sysfs_emit in macro defining functions mm: huge_memory: convert remaining use of sprintf to sysfs_emit and neatening mm: use sysfs_emit for struct kobject * uses mm: fix kernel-doc markups zram: break the strict dependency from lzo zram: add stat to gather incompressible pages since zram set up zram: support page writeback mm/process_vm_access: remove redundant initialization of iov_r mm/zsmalloc.c: rework the list_add code in insert_zspage() mm/zswap: move to use crypto_acomp API for hardware acceleration mm/zswap: fix passing zero to 'PTR_ERR' warning mm/zswap: make struct kernel_param_ops definitions const userfaultfd/selftests: hint the test runner on required privilege userfaultfd/selftests: fix retval check for userfaultfd_open() userfaultfd/selftests: always dump something in modes userfaultfd: selftests: make __{s,u}64 format specifiers portable ...

locking/selftests: add testcases for fs_reclaim

2020-12-15T20:13:41Z

Since I butchered this I figured better to make sure we have testcases for this now. Since we only have a locking context for __GFP_FS that's the only thing we're testing right now. Link: https://lkml.kernel.org/r/20201125162532.1299794-4-daniel.vetter@ffwll.ch Signed-off-by: Daniel Vetter Acked-by: Peter Zijlstra (Intel) Cc: Dave Chinner Cc: Qian Cai Cc: Thomas Hellström (Intel) Cc: Jason Gunthorpe Cc: Maarten Lankhorst Cc: Christian König Cc: "Matthew Wilcox (Oracle)" Cc: Peter Zijlstra Cc: Ingo Molnar Cc: Will Deacon Cc: Christoph Lameter Cc: David Rientjes Cc: Ingo Molnar Cc: Jason Gunthorpe Cc: Joonsoo Kim Cc: Mathieu Desnoyers Cc: Michel Lespinasse Cc: Paul E. McKenney Cc: Pekka Enberg Cc: Randy Dunlap Cc: Sebastian Andrzej Siewior Cc: Thomas Gleixner Cc: Vlastimil Babka Cc: Waiman Long Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

lockdep/selftest: Add spin_nest_lock test

2020-12-03T10:20:50Z

Add a self test case to test the behavior for the following case: lock(A); lock_nest_lock(C1, A); lock(B); lock_nest_lock(C2, A); This is a reproducer for a problem[1] reported by Chris Wilson, and is helpful to prevent this. [1]: https://lore.kernel.org/lkml/160390684819.31966.12048967113267928793@build.alporthouse.com/ Signed-off-by: Boqun Feng Signed-off-by: Peter Zijlstra (Intel) Link: https://lkml.kernel.org/r/20201102053743.450459-2-boqun.feng@gmail.com

lockdep/selftests: Fix PROVE_RAW_LOCK_NESTING

2020-12-03T10:20:50Z

The selftest nests rwlock_t inside raw_spinlock_t, this is invalid. Reported-by: Boqun Feng Signed-off-by: Peter Zijlstra (Intel)