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| author | Paolo Bonzini <[email protected]> | 2025-05-27 16:17:06 +0000 |
|---|---|---|
| committer | Paolo Bonzini <[email protected]> | 2025-05-28 10:29:17 +0000 |
| commit | 8e86e73626527e5a69bf5263d6bbe9c2a86b4319 (patch) | |
| tree | d56a6bc701bded71bf3befc233df4f73bd0589a9 /rust/helpers/mutex.c | |
| parent | Merge tag 'kvm-x86-svm-6.16' of https://github.com/kvm-x86/linux into HEAD (diff) | |
| parent | rust: add helper for mutex_trylock (diff) | |
| download | kernel-8e86e73626527e5a69bf5263d6bbe9c2a86b4319.tar.gz kernel-8e86e73626527e5a69bf5263d6bbe9c2a86b4319.zip | |
Merge branch 'kvm-lockdep-common' into HEAD
Introduce new mutex locking functions mutex_trylock_nest_lock() and
mutex_lock_killable_nest_lock() and use them to clean up locking
of all vCPUs for a VM.
For x86, this removes some complex code that was used instead
of lockdep's "nest_lock" feature.
For ARM and RISC-V, this removes a lockdep warning when the VM is
configured to have more than MAX_LOCK_DEPTH vCPUs, and removes a fair
amount of duplicate code by sharing the logic across all architectures.
Signed-off-by: Paolo BOnzini <[email protected]>
Diffstat (limited to 'rust/helpers/mutex.c')
| -rw-r--r-- | rust/helpers/mutex.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/rust/helpers/mutex.c b/rust/helpers/mutex.c index 06575553eda5..9ab29104bee1 100644 --- a/rust/helpers/mutex.c +++ b/rust/helpers/mutex.c @@ -7,6 +7,11 @@ void rust_helper_mutex_lock(struct mutex *lock) mutex_lock(lock); } +int rust_helper_mutex_trylock(struct mutex *lock) +{ + return mutex_trylock(lock); +} + void rust_helper___mutex_init(struct mutex *mutex, const char *name, struct lock_class_key *key) { |