[PATCH] powerpc/mce: Remove per cpu variables from MCE handlers

[Michael Ellerman]

Ganesh Goudar <ganeshgr at linux.ibm.com> writes:
> diff --git a/arch/powerpc/include/asm/paca.h b/arch/powerpc/include/asm/paca.h
> index 9454d29ff4b4..4769954efa7d 100644
> --- a/arch/powerpc/include/asm/paca.h
> +++ b/arch/powerpc/include/asm/paca.h
> @@ -273,6 +274,17 @@ struct paca_struct {
>  #ifdef CONFIG_MMIOWB
>  	struct mmiowb_state mmiowb_state;
>  #endif
> +#ifdef CONFIG_PPC_BOOK3S_64
> +	int mce_nest_count;
> +	struct machine_check_event mce_event[MAX_MC_EVT];
> +	/* Queue for delayed MCE events. */
> +	int mce_queue_count;
> +	struct machine_check_event mce_event_queue[MAX_MC_EVT];
> +
> +	/* Queue for delayed MCE UE events. */
> +	int mce_ue_count;
> +	struct machine_check_event  mce_ue_event_queue[MAX_MC_EVT];
> +#endif /* CONFIG_PPC_BOOK3S_64 */
>  } ____cacheline_aligned;

How much does this expand the paca by?

pahole can tell you.

cheers