diff options
| author | Filipe Xavier <felipe_life@live.com> | 2024-09-26 17:50:37 -0300 |
|---|---|---|
| committer | Miguel Ojeda <ojeda@kernel.org> | 2024-10-10 00:33:42 +0200 |
| commit | f4c2c90bb7b4ae1812dbaca15d9637eecaac2c9f (patch) | |
| tree | 6f8c4af627bd127e47ef15a4a980e2a49329e637 /rust/helpers/spinlock.c | |
| parent | 3566362dd4dc61f770e42045a92cc3f17df61df0 (diff) | |
rust: lock: add trylock method support for lock backend
Add a non-blocking trylock method to lock backend interface, mutex and
spinlock implementations. It includes a C helper for spin_trylock.
Rust Binder will use this method together with the new shrinker
abstractions to avoid deadlocks in the memory shrinker.
Link: https://lore.kernel.org/all/20240912-shrinker-v1-1-18b7f1253553@google.com
Signed-off-by: Filipe Xavier <felipe_life@live.com>
Reviewed-by: Fiona Behrens <me@kloenk.dev>
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Reviewed-by: Boqun Feng <boqun.feng@gmail.com>
Link: https://lore.kernel.org/r/BL0PR02MB4914579914884B5D7473B3D6E96A2@BL0PR02MB4914.namprd02.prod.outlook.com
[ Slightly reworded. - Miguel ]
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
Diffstat (limited to 'rust/helpers/spinlock.c')
| -rw-r--r-- | rust/helpers/spinlock.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/rust/helpers/spinlock.c b/rust/helpers/spinlock.c index acc1376b833c..775ed4d549ae 100644 --- a/rust/helpers/spinlock.c +++ b/rust/helpers/spinlock.c @@ -22,3 +22,8 @@ void rust_helper_spin_unlock(spinlock_t *lock) { spin_unlock(lock); } + +int rust_helper_spin_trylock(spinlock_t *lock) +{ + return spin_trylock(lock); +} |