[PATCH v3 12/12] kexec: Expose the crash memaction bitmap in debugfs

[Randy Dunlap]

On 9/28/26 10:18 AM, Jan Sebastian Götte wrote:
> diff --git a/kernel/Kconfig.kexec b/kernel/Kconfig.kexec
> index 3cdc8d459ac0..b5380e16bfaf 100644
> --- a/kernel/Kconfig.kexec
> +++ b/kernel/Kconfig.kexec
> @@ -204,4 +204,18 @@ config CRASH_MEMACTION
>  
>  	  If unsure, say N.
>  
> +config CRASH_MEMACTION_DEBUGFS
> +	bool "Expose the crash memaction bitmap in debugfs"
> +	depends on CRASH_MEMACTION && DEBUG_FS
> +	help
> +	  Allow reading the live crash_memaction bitmap through
> +      /sys/kernel/debug/crash_memaction/. The bitmap is used when
> +      CRASH_MEMACTION is set and when a crash_memaction cmdline param is present
> +      to tell an eventual kdump kernel about the use of certain memory pages.
> +
> +      Note that this is a debug interface only that gives no guarantees
> +      whatsoever on memory consistency.
> +
> +	  If unsure, say N.
> +
>  endmenu

Please adhere to kernel coding style for Kconfig files:

10) Kconfig configuration files
-------------------------------

For all of the Kconfig* configuration files throughout the source tree,
the indentation is somewhat different.  Lines under a ``config`` definition
are indented with one tab, while help text is indented an additional two
spaces.

-- 
~Randy