linux-pinenote/arch/parisc/Kconfig.debug

menu "Kernel hacking"

source "lib/Kconfig.debug"

config DEBUG_RODATA
       bool "Write protect kernel read-only data structures"
       depends on DEBUG_KERNEL
       help
         Mark the kernel read-only data as write-protected in the pagetables,
         in order to catch accidental (and incorrect) writes to such const
         data. This option may have a slight performance impact because a
         portion of the kernel code won't be covered by a TLB anymore.
         If in doubt, say "N".

endmenu

config DEBUG_STACKOVERFLOW
	bool "Check for stack overflows"
	default y
	depends on DEBUG_KERNEL
	---help---
	  Say Y here if you want to check the overflows of kernel, IRQ
	  and exception stacks. This option will cause messages of the
	  stacks in detail when free stack space drops below a certain
	  limit.
	  If in doubt, say "N".
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! 2005-04-16 15:20:36 -07:00			`menu "Kernel hacking"`

			`source "lib/Kconfig.debug"`

[PARISC] Add CONFIG_DEBUG_RODATA to protect read-only data Add the parisc version of the "mark rodata section read only" patches. Based on code from and Signed-off-by Arjan van de Ven <arjan@infradead.org>, Ingo Molnar <mingo@elte.hu>, Andi Kleen <ak@muc.de>, Andrew Morton <akpm@osdl.org>, Linus Torvalds <torvalds@osdl.org>. Signed-off-by: Helge Deller <deller@parisc-linux.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org> 2006-01-13 13:21:06 -07:00			`config DEBUG_RODATA`
			`bool "Write protect kernel read-only data structures"`
			`depends on DEBUG_KERNEL`
			`help`
			`Mark the kernel read-only data as write-protected in the pagetables,`
			`in order to catch accidental (and incorrect) writes to such const`
			`data. This option may have a slight performance impact because a`
			`portion of the kernel code won't be covered by a TLB anymore.`
			`If in doubt, say "N".`

Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! 2005-04-16 15:20:36 -07:00			`endmenu`
parisc: add kernel stack overflow check Add the CONFIG_DEBUG_STACKOVERFLOW config option to enable checks to detect kernel stack overflows. Stack overflows can not be detected reliable since we do not want to introduce too much overhead. Instead, during irq processing in do_cpu_irq_mask() we check kernel stack usage of the interrupted kernel process. Kernel threads can be easily detected by checking the value of space register 7 (sr7) which is zero when running inside the kernel. Since THREAD_SIZE is 16k and PAGE_SIZE is 4k, reduce the alignment of the init thread to the lower value (PAGE_SIZE) in the kernel vmlinux.ld.S linker script. Signed-off-by: Helge Deller <deller@gmx.de> 2013-05-07 19:28:52 +00:00
			`config DEBUG_STACKOVERFLOW`
			`bool "Check for stack overflows"`
			`default y`
			`depends on DEBUG_KERNEL`
			`---help---`
			`Say Y here if you want to check the overflows of kernel, IRQ`
			`and exception stacks. This option will cause messages of the`
			`stacks in detail when free stack space drops below a certain`
			`limit.`
			`If in doubt, say "N".`