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CONFIG_DEBUG_WW_MUTEX_SLOWPATH: Wait/wound mutex debugging: Slowpath testing

General informations

The Linux kernel configuration item CONFIG_DEBUG_WW_MUTEX_SLOWPATH:

Help text

This feature enables slowpath testing for w/w mutex users by injecting additional -EDEADLK wound/backoff cases. Together with the full mutex checks enabled with (PROVE_LOCKING) this will test all possible w/w mutex interface abuse with the exception of simply not acquiring all the required locks. Note that this feature can introduce significant overhead, so it really should not be enabled in a production or distro kernel, even a debug kernel. If you are a driver writer, enable it. If you are a distro, do not.

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