CCing Oleg.
On Fri 03-05-19 22:28:00, Alexey Dobriyan wrote:
[...]
> add/remove: 0/0 grow/shrink: 8/68 up/down: 49/-1147 (-1098)
[...]
> --- a/include/linux/sched/signal.h
> +++ b/include/linux/sched/signal.h
> @@ -15,10 +15,10 @@
> */
>
> struct sighand_struct {
> - refcount_t count;
> - struct k_sigaction action[_NSIG];
> spinlock_t siglock;
> + refcount_t count;
> wait_queue_head_t signalfd_wqh;
> + struct k_sigaction action[_NSIG];
> };
Is it possible that this would cause false sharing of the cache line
that would have performance implications now?
--
Michal Hocko
SUSE Labs
