Peter Zijlstra <pet...@infradead.org> writes:
[snip]
> diff --git a/include/linux/smp.h b/include/linux/smp.h
> index 68123c1fe549..8d817cb80a38 100644
> --- a/include/linux/smp.h
> +++ b/include/linux/smp.h
> @@ -14,13 +14,16 @@
> #include <linux/llist.h>
>
> typedef void (*smp_call_func_t)(void *info);
> -struct call_single_data {
> +struct __call_single_data {
> struct llist_node llist;
> smp_call_func_t func;
> void *info;
> unsigned int flags;
> };
>
> +typedef struct __call_single_data call_single_data_t
> + __aligned(sizeof(struct __call_single_data));
> +
Another requirement of the alignment is that it should be the power of
2. Otherwise, for example, if someone adds a field to struct, so that
the size becomes 40 on x86_64. The alignment should be 64 instead of
40.
Best Regards,
Huang, Ying
> /* total number of cpus in this system (may exceed NR_CPUS) */
> extern unsigned int total_cpus;
>
[snip]
