kernel

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Richard Maina a6978d1b7b hwspinlock: Introduce hwspin_lock_bust()

[ Upstream commit 7c327d5659 ]

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>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2024-09-08 07:54:43 +02:00

futex-requeue-pi.rst

Documentation: locking: fix references

2021-08-24 13:20:39 -06:00

hwspinlock.rst

hwspinlock: Introduce hwspin_lock_bust()

2024-09-08 07:54:43 +02:00

index.rst

Documentation: use capitalization for chapters and acronyms

2023-05-16 12:49:31 -06:00

lockdep-design.rst

Documentation: Fix typos