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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2021-04-28 12:37:53 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-04-28 12:37:53 -0700 |
| commit | 0ff0edb550e256597e505eff308f90d9a0b6677c (patch) | |
| tree | 6d96f53e70f2bdec49627e30c2645ee97b987848 /Documentation | |
| parent | 9a45da9270b64b14e154093c28f746d861ab8c61 (diff) | |
| parent | f4abe9967c6fdb511ee567e129a014b60945ab93 (diff) | |
| download | linux-0ff0edb550e256597e505eff308f90d9a0b6677c.tar.gz | |
Merge tag 'locking-core-2021-04-28' of 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 ...
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/admin-guide/kernel-parameters.txt | 10 | ||||
| -rw-r--r-- | Documentation/dev-tools/kcsan.rst | 3 |
2 files changed, 13 insertions, 0 deletions
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index fa08ec0dfbe7..54582ca6c4f9 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -782,6 +782,16 @@ cs89x0_media= [HW,NET] Format: { rj45 | aui | bnc } + csdlock_debug= [KNL] Enable debug add-ons of cross-CPU function call + handling. When switched on, additional debug data is + printed to the console in case a hanging CPU is + detected, and that CPU is pinged again in order to try + to resolve the hang situation. + 0: disable csdlock debugging (default) + 1: enable basic csdlock debugging (minor impact) + ext: enable extended csdlock debugging (more impact, + but more data) + dasd= [HW,NET] See header of drivers/s390/block/dasd_devmap.c. diff --git a/Documentation/dev-tools/kcsan.rst b/Documentation/dev-tools/kcsan.rst index be7a0b0e1f28..d85ce238ace7 100644 --- a/Documentation/dev-tools/kcsan.rst +++ b/Documentation/dev-tools/kcsan.rst @@ -1,3 +1,6 @@ +.. SPDX-License-Identifier: GPL-2.0 +.. Copyright (C) 2019, Google LLC. + The Kernel Concurrency Sanitizer (KCSAN) ======================================== |