On Fri, Jun 03, 2016 at 05:48:50PM +0800, Pan Xinhui wrote: > queued_spin_lock_slowpath should not worry about interrupt change > node->count by accident because ->count is inc and dec when we > enter/leave queued_spin_lock_slowpath. > > So this_cpu_dec() does some no point things here, lets use this_cpu_ptr > for a small optimization.
Uhm, have you actually looked at what that does on x86?
