Use a deferrable timer to trigger allocations

depends

CONFIG_KFENCE

configname: CONFIG_KFENCE_DEFERRABLE

Linux Kernel Configuration

└─> Kernel hacking

└─> Memory Debugging

└─> KFENCE: low-overhead sampling-based memory safety error detector

└─> Use a deferrable timer to trigger allocations

In linux kernel since version 5.2 (release Date: 2019-07-07)

Use a deferrable timer to trigger allocations. This avoids forcing
CPU wake-ups if the system is idle, at the risk of a less predictable
sample interval.

Warning: The KUnit test suite fails with this option enabled - due to
the unpredictability of the sample interval!

Say N if you are unsure.