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When a remoteproc crashes or goes down unexpectedly this can result in a state where locks held by the remoteproc will remain locked possibly resulting in deadlock. This new API hwspin_lock_bust() allows hwspinlock implementers to define a bust operation for freeing previously acquired hwspinlocks after verifying ownership of the acquired lock. Signed-off-by: Richard Maina <quic_rmaina@quicinc.com> Reviewed-by: Bjorn Andersson <andersson@kernel.org> Signed-off-by: Chris Lew <quic_clew@quicinc.com> Link: https://lore.kernel.org/r/20240529-hwspinlock-bust-v3-1-c8b924ffa5a2@quicinc.com Signed-off-by: Bjorn Andersson <andersson@kernel.org> |
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| .. | ||
| futex-requeue-pi.rst | ||
| hwspinlock.rst | ||
| index.rst | ||
| lockdep-design.rst | ||
| lockstat.rst | ||
| locktorture.rst | ||
| locktypes.rst | ||
| mutex-design.rst | ||
| percpu-rw-semaphore.rst | ||
| pi-futex.rst | ||
| preempt-locking.rst | ||
| robust-futex-ABI.rst | ||
| robust-futexes.rst | ||
| rt-mutex-design.rst | ||
| rt-mutex.rst | ||
| seqlock.rst | ||
| spinlocks.rst | ||
| ww-mutex-design.rst | ||