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Diffstat (limited to 'drivers/cxl/cxl.h')
-rw-r--r--drivers/cxl/cxl.h78
1 files changed, 0 insertions, 78 deletions
diff --git a/drivers/cxl/cxl.h b/drivers/cxl/cxl.h
index 990b6670222e..140dc3278cde 100644
--- a/drivers/cxl/cxl.h
+++ b/drivers/cxl/cxl.h
@@ -405,82 +405,4 @@ struct cxl_nvdimm_bridge *cxl_find_nvdimm_bridge(struct cxl_nvdimm *cxl_nvd);
#define __mock static
#endif
-#ifdef CONFIG_PROVE_CXL_LOCKING
-enum cxl_lock_class {
- CXL_ANON_LOCK,
- CXL_NVDIMM_LOCK,
- CXL_NVDIMM_BRIDGE_LOCK,
- CXL_PORT_LOCK,
- /*
- * Be careful to add new lock classes here, CXL_PORT_LOCK is
- * extended by the port depth, so a maximum CXL port topology
- * depth would need to be defined first.
- */
-};
-
-static inline void cxl_nested_lock(struct device *dev)
-{
- if (is_cxl_port(dev)) {
- struct cxl_port *port = to_cxl_port(dev);
-
- mutex_lock_nested(&dev->lockdep_mutex,
- CXL_PORT_LOCK + port->depth);
- } else if (is_cxl_decoder(dev)) {
- struct cxl_port *port = to_cxl_port(dev->parent);
-
- /*
- * A decoder is the immediate child of a port, so set
- * its lock class equal to other child device siblings.
- */
- mutex_lock_nested(&dev->lockdep_mutex,
- CXL_PORT_LOCK + port->depth + 1);
- } else if (is_cxl_nvdimm_bridge(dev))
- mutex_lock_nested(&dev->lockdep_mutex, CXL_NVDIMM_BRIDGE_LOCK);
- else if (is_cxl_nvdimm(dev))
- mutex_lock_nested(&dev->lockdep_mutex, CXL_NVDIMM_LOCK);
- else
- mutex_lock_nested(&dev->lockdep_mutex, CXL_ANON_LOCK);
-}
-
-static inline void cxl_nested_unlock(struct device *dev)
-{
- mutex_unlock(&dev->lockdep_mutex);
-}
-
-static inline void cxl_device_lock(struct device *dev)
-{
- /*
- * For double lock errors the lockup will happen before lockdep
- * warns at cxl_nested_lock(), so assert explicitly.
- */
- lockdep_assert_not_held(&dev->lockdep_mutex);
-
- device_lock(dev);
- cxl_nested_lock(dev);
-}
-
-static inline void cxl_device_unlock(struct device *dev)
-{
- cxl_nested_unlock(dev);
- device_unlock(dev);
-}
-#else
-static inline void cxl_nested_lock(struct device *dev)
-{
-}
-
-static inline void cxl_nested_unlock(struct device *dev)
-{
-}
-
-static inline void cxl_device_lock(struct device *dev)
-{
- device_lock(dev);
-}
-
-static inline void cxl_device_unlock(struct device *dev)
-{
- device_unlock(dev);
-}
-#endif
#endif /* __CXL_H__ */