[PATCH v4 03/10] crash hp: definitions and prototype changes

[Baoquan He]

On 02/09/22 at 02:56pm, Eric DeVolder wrote:
> This change adds members to struct kimage to facilitate crash
> hotplug support.
> 
> This change also defines crash hotplug events and associated
> prototypes.
> 
> Signed-off-by: Eric DeVolder <eric.devolder at oracle.com>
> ---
>  include/linux/kexec.h | 16 ++++++++++++++++
>  1 file changed, 16 insertions(+)
> 
> diff --git a/include/linux/kexec.h b/include/linux/kexec.h
> index 0c994ae37729..13c238c2da48 100644
> --- a/include/linux/kexec.h
> +++ b/include/linux/kexec.h
> @@ -299,6 +299,13 @@ struct kimage {
>  
>  	/* Information for loading purgatory */
>  	struct purgatory_info purgatory_info;
> +
> +#ifdef CONFIG_CRASH_HOTPLUG
> +	bool hotplug_event;
> +	int offlinecpu;
> +	bool elf_index_valid;
> +	int elf_index;
> +#endif
>  #endif
>  
>  #ifdef CONFIG_IMA_KEXEC
> @@ -315,6 +322,15 @@ struct kimage {
>  	unsigned long elf_load_addr;
>  };
>  
> +#ifdef CONFIG_CRASH_HOTPLUG
> +void arch_crash_hotplug_handler(struct kimage *image,
> +	unsigned int hp_action, unsigned long a, unsigned long b);

Seems this patch can be merged with patch 6/10. I don't see prototype
change in this patch.

> +#define KEXEC_CRASH_HP_REMOVE_CPU   0
> +#define KEXEC_CRASH_HP_ADD_CPU      1
> +#define KEXEC_CRASH_HP_REMOVE_MEMORY 2
> +#define KEXEC_CRASH_HP_ADD_MEMORY   3
> +#endif /* CONFIG_CRASH_HOTPLUG */
> +
>  /* kexec interface functions */
>  extern void machine_kexec(struct kimage *image);
>  extern int machine_kexec_prepare(struct kimage *image);
> -- 
> 2.27.0
>