1menu "Kernel hacking" 2 3source "lib/Kconfig.debug" 4 5config EARLY_PRINTK 6 bool 7 depends on ALPHA_GENERIC || ALPHA_SRM 8 default y 9 10config DEBUG_RWLOCK 11 bool "Read-write spinlock debugging" 12 depends on DEBUG_KERNEL 13 help 14 If you say Y here then read-write lock processing will count how many 15 times it has tried to get the lock and issue an error message after 16 too many attempts. If you suspect a rwlock problem or a kernel 17 hacker asks for this option then say Y. Otherwise say N. 18 19config DEBUG_SEMAPHORE 20 bool "Semaphore debugging" 21 depends on DEBUG_KERNEL 22 help 23 If you say Y here then semaphore processing will issue lots of 24 verbose debugging messages. If you suspect a semaphore problem or a 25 kernel hacker asks for this option then say Y. Otherwise say N. 26 27config ALPHA_LEGACY_START_ADDRESS 28 bool "Legacy kernel start address" 29 depends on ALPHA_GENERIC 30 default n 31 ---help--- 32 The 2.4 kernel changed the kernel start address from 0x310000 33 to 0x810000 to make room for the Wildfire's larger SRM console. 34 Recent consoles on Titan and Marvel machines also require the 35 extra room. 36 37 If you're using aboot 0.7 or later, the bootloader will examine the 38 ELF headers to determine where to transfer control. Unfortunately, 39 most older bootloaders -- APB or MILO -- hardcoded the kernel start 40 address rather than examining the ELF headers, and the result is a 41 hard lockup. 42 43 Say Y if you have a broken bootloader. Say N if you do not, or if 44 you wish to run on Wildfire, Titan, or Marvel. 45 46config ALPHA_LEGACY_START_ADDRESS 47 bool 48 depends on !ALPHA_GENERIC && !ALPHA_TITAN && !ALPHA_MARVEL && !ALPHA_WILDFIRE 49 default y 50 51config MATHEMU 52 tristate "Kernel FP software completion" if DEBUG_KERNEL && !SMP 53 default y if !DEBUG_KERNEL || SMP 54 help 55 This option is required for IEEE compliant floating point arithmetic 56 on the Alpha. The only time you would ever not say Y is to say M in 57 order to debug the code. Say Y unless you know what you are doing. 58 59endmenu 60