some important debug options of Linux kernel :-
CONFIG_DEBUG_SPINLOCK : With this option enabled, the kernel catches operations on uninitialized spinlocks and various other errors (such as unlocking a lock twice).
SPINLOCK_TIMEOUT and SPINLOCK_TIMEOUT_TIME: The spinlocks will timeout after X number of seconds.This is useful for catching deadlocks, and make sure locks are not held too long.
CONFIG_DEBUG_SPINLOCK_SLEEP : This option enables a check for attempts to sleep while holding a spinlock. In fact, it complains if you call a function that could potentially sleep, even if the call in question would not sleep.
CONFIG_DEBUG_SLAB: This crucial option turns on several types of checks in the kernel memory allocation functions; with these checks enabled, it is possible to detect a number of memory overrun and missing initialization errors
CONFIG_INPUT_EVBUG : This option (under "Device drivers/Input device support") turns on verbose logging of input events. If you are working on a driver for an input device, this option may be helpful. Be aware of the security implications of this option, however: it logs everything you type, including your passwords.
CONFIG_DEBUG_SPINLOCK : With this option enabled, the kernel catches operations on uninitialized spinlocks and various other errors (such as unlocking a lock twice).
SPINLOCK_TIMEOUT and SPINLOCK_TIMEOUT_TIME: The spinlocks will timeout after X number of seconds.This is useful for catching deadlocks, and make sure locks are not held too long.
CONFIG_DEBUG_SPINLOCK_SLEEP : This option enables a check for attempts to sleep while holding a spinlock. In fact, it complains if you call a function that could potentially sleep, even if the call in question would not sleep.
CONFIG_DEBUG_SLAB: This crucial option turns on several types of checks in the kernel memory allocation functions; with these checks enabled, it is possible to detect a number of memory overrun and missing initialization errors
CONFIG_INPUT_EVBUG : This option (under "Device drivers/Input device support") turns on verbose logging of input events. If you are working on a driver for an input device, this option may be helpful. Be aware of the security implications of this option, however: it logs everything you type, including your passwords.
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