9 Apr
2015
9 Apr
'15
6:57 a.m.
On Thu, Apr 09, 2015 at 08:28:41AM +0200, Ingo Molnar wrote:
Btw., does cpu_base->active_bases even make sense? hrtimer bases are fundamentally percpu, and to check whether there are any pending timers is a very simple check:
base->active->next != NULL
Yeah, that's 3 pointer dereferences from cpu_base, iow you traded a single bit test on an already loaded word for 3 potential cacheline misses.