13 Oct
2025
13 Oct
'25
9:09 p.m.
On 2025-10-13 13:32, Andy Lutomirski wrote:
The global timestamp would just be some field in the vvar area, which we have plenty of anyway.
But I agree, accelerating getcpu is pointless. In any case, anything that historically thought it really really wanted accelerated getcpu can, and probably does, use rseq these days.
Indeed. And with RDPID it is fast enough that the bulk of the cost is probably in the vdso call.
-hpa