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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324# SPDX-License-Identifier: GPL-2.0#config LIGHTWEIGHT_SPINLOCK_CHECK bool "Enable lightweight spinlock checks" depends on DEBUG_KERNEL && SMP && !DEBUG_SPINLOCK default y help Add checks with low performance impact to the spinlock functions to catch memory overwrites at runtime. For more advanced spinlock debugging you should choose the DEBUG_SPINLOCK option which will detect unitialized spinlocks too. If unsure say Y here.
config TLB_PTLOCK bool "Use page table locks in TLB fault handler" depends on DEBUG_KERNEL && SMP default n help Select this option to enable page table locking in the TLB fault handler. This ensures that page table entries are updated consistently on SMP machines at the expense of some loss in performance.