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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2021-02-21 23:12:01 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-02-21 23:12:01 +0300 |
| commit | 9eef02334505411667a7b51a8f349f8c6c4f3b66 (patch) | |
| tree | 3a0c8fb85d76595b2f9468d3e31f41147a43ed55 /Documentation/admin-guide | |
| parent | d089f48fba28db14d0fe7753248f2575a9ddfc73 (diff) | |
| parent | 3765d01bab73bdb920ef711203978f02cd26e4da (diff) | |
| download | linux-9eef02334505411667a7b51a8f349f8c6c4f3b66.tar.xz | |
Merge tag 'locking-core-2021-02-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking updates from Ingo Molnar:
"Core locking primitives updates:
- Remove mutex_trylock_recursive() from the API - no users left
- Simplify + constify the futex code a bit
Lockdep updates:
- Teach lockdep about local_lock_t
- Add CONFIG_DEBUG_IRQFLAGS=y debug config option to check for
potentially unsafe IRQ mask restoration patterns. (I.e.
calling raw_local_irq_restore() with IRQs enabled.)
- Add wait context self-tests
- Fix graph lock corner case corrupting internal data structures
- Fix noinstr annotations
LKMM updates:
- Simplify the litmus tests
- Documentation fixes
KCSAN updates:
- Re-enable KCSAN instrumentation in lib/random32.c
Misc fixes:
- Don't branch-trace static label APIs
- DocBook fix
- Remove stale leftover empty file"
* tag 'locking-core-2021-02-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (24 commits)
checkpatch: Don't check for mutex_trylock_recursive()
locking/mutex: Kill mutex_trylock_recursive()
s390: Use arch_local_irq_{save,restore}() in early boot code
lockdep: Noinstr annotate warn_bogus_irq_restore()
locking/lockdep: Avoid unmatched unlock
locking/rwsem: Remove empty rwsem.h
locking/rtmutex: Add missing kernel-doc markup
futex: Remove unneeded gotos
futex: Change utime parameter to be 'const ... *'
lockdep: report broken irq restoration
jump_label: Do not profile branch annotations
locking: Add Reviewers
locking/selftests: Add local_lock inversion tests
locking/lockdep: Exclude local_lock_t from IRQ inversions
locking/lockdep: Clean up check_redundant() a bit
locking/lockdep: Add a skip() function to __bfs()
locking/lockdep: Mark local_lock_t
locking/selftests: More granular debug_locks_verbose
lockdep/selftest: Add wait context selftests
tools/memory-model: Fix typo in klitmus7 compatibility table
...
Diffstat (limited to 'Documentation/admin-guide')
| -rw-r--r-- | Documentation/admin-guide/kernel-parameters.txt | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index a6c806557e25..36d6ce7cc886 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -802,13 +802,14 @@ insecure, please do not use on production kernels. debug_locks_verbose= - [KNL] verbose self-tests - Format=<0|1> + [KNL] verbose locking self-tests + Format: <int> Print debugging info while doing the locking API self-tests. - We default to 0 (no extra messages), setting it to - 1 will print _a lot_ more information - normally - only useful to kernel developers. + Bitmask for the various LOCKTYPE_ tests. Defaults to 0 + (no extra messages), setting it to -1 (all bits set) + will print _a_lot_ more information - normally only + useful to lockdep developers. debug_objects [KNL] Enable object debugging |