kernel/linux.git/Documentation/locking/hwspinlock.rst, branch v7.1Linux kernel stable tree (mirror)https://git.radix-linux.su/kernel/linux.git/atom?h=v7.12025-03-21T22:12:04+00:00hwspinlock: Remove unused hwspin_lock_get_id()2025-03-21T22:12:04+00:00Dr. David Alan Gilbertlinux@treblig.org2024-12-15T02:20:23+00:00urn:sha1:fec04edb74126f21ac628c7be763c97deb49f69d
hwspin_lock_get_id() has been unused since the original 2011
commit bd9a4c7df256 ("drivers: hwspinlock: add framework")
Remove it and the corresponding docs.
Note that the of_hwspin_lock_get_id() version is still in use,
so leave that alone.
Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org>
Reviewed-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Link: https://lore.kernel.org/r/20241215022023.181435-1-linux@treblig.org
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
hwspinlock: Remove unused (devm_)hwspin_lock_request()2025-03-21T22:12:04+00:00Dr. David Alan Gilbertlinux@treblig.org2024-10-27T20:54:45+00:00urn:sha1:e9a3682d17d5afee697fc95d3fa342d740767fad
devm_hwspin_lock_request() was added by 2018's
commit 4f1acd758b08 ("hwspinlock: Add devm_xxx() APIs to request/free
hwlock") however, it's never been used, everyone uses the
devm_hwspin_lock_request_specific() call instead.
Remove it.
Similarly, the none-devm variant isn't used.
Remove it, and the referring documentation.
Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org>
Reviewed-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Link: https://lore.kernel.org/r/20241027205445.239108-1-linux@treblig.org
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
hwspinlock: Introduce hwspin_lock_bust()2024-05-29T19:52:26+00:00Richard Mainaquic_rmaina@quicinc.com2024-05-29T18:09:55+00:00urn:sha1:7c327d56597d8de1680cf24e956b704270d3d84a
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>
docs: move locking-specific documents to locking/2020-05-15T18:05:07+00:00Mauro Carvalho Chehabmchehab+huawei@kernel.org2020-05-01T15:37:54+00:00urn:sha1:95ca6d73a8a97ba343082746dbf935863b76375a
Several files under Documentation/*.txt describe some type of
locking API. Move them to locking/ subdir and add to the
locking/index.rst index file.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/dd833a10bbd0b2c1461d78913f5ec28a7e27f00b.1588345503.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>