| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | menu "Kernel hacking" |
| 2 | |
| 3 | source "lib/Kconfig.debug" |
| 4 | |
| Helge Deller | 366dd4e | 2016-04-13 22:27:22 +0200 | [diff] [blame] | 5 | config TRACE_IRQFLAGS_SUPPORT |
| 6 | def_bool y |
| 7 | |
| Helge Deller | 1bcdd85 | 2006-01-13 13:21:06 -0700 | [diff] [blame] | 8 | config DEBUG_RODATA |
| 9 | bool "Write protect kernel read-only data structures" |
| 10 | depends on DEBUG_KERNEL |
| Helge Deller | 366dd4e | 2016-04-13 22:27:22 +0200 | [diff] [blame] | 11 | default y |
| Helge Deller | 1bcdd85 | 2006-01-13 13:21:06 -0700 | [diff] [blame] | 12 | help |
| 13 | Mark the kernel read-only data as write-protected in the pagetables, |
| 14 | in order to catch accidental (and incorrect) writes to such const |
| 15 | data. This option may have a slight performance impact because a |
| 16 | portion of the kernel code won't be covered by a TLB anymore. |
| 17 | If in doubt, say "N". |
| 18 | |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 19 | endmenu |