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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2024-07-23 13:34:56 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2024-07-23 13:34:56 -0700 |
| commit | 58bffbac533d4526cb4922b8563d1963a90729be (patch) | |
| tree | be77a4721c63d395ced995cbe5f750ed08cd9ac4 /Documentation | |
| parent | e9680017b2dc8686a908ea1b51941a91b6da9f1d (diff) | |
| parent | 718a7ad700b1ea86ae5a3ee636a275f98ba8ef86 (diff) | |
Merge tag 'hwlock-v6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/remoteproc/linux
Pull hwspinlock updates from Bjorn Andersson:
"This introduces a mechanism in the hardware spinlock framework, and
the Qualcomm TCSR mutex driver, for allowing clients to bust locks
held by a remote processor in the event that this enters a faulty
state while holding the shared lock"
* tag 'hwlock-v6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/remoteproc/linux:
hwspinlock: qcom: implement bust operation
hwspinlock: Introduce hwspin_lock_bust()
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/locking/hwspinlock.rst | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/Documentation/locking/hwspinlock.rst b/Documentation/locking/hwspinlock.rst index 6f03713b7003..2ffaa3cbd63f 100644 --- a/Documentation/locking/hwspinlock.rst +++ b/Documentation/locking/hwspinlock.rst @@ -87,6 +87,17 @@ Should be called from a process context (might sleep). :: + int hwspin_lock_bust(struct hwspinlock *hwlock, unsigned int id); + +After verifying the owner of the hwspinlock, release a previously acquired +hwspinlock; returns 0 on success, or an appropriate error code on failure +(e.g. -EOPNOTSUPP if the bust operation is not defined for the specific +hwspinlock). + +Should be called from a process context (might sleep). + +:: + int hwspin_lock_timeout(struct hwspinlock *hwlock, unsigned int timeout); Lock a previously-assigned hwspinlock with a timeout limit (specified in |