On 01/11/2018 00:57, Andy Lutomirski wrote:
On Oct 31, 2018, at 2:00 PM, Peter Zijlstra <peterz@xxxxxxxxxxxxx> wrote:
I _think_ the use-case for atomics is updating the reference counts of
objects that are in this write-rare domain. But I'm not entirely clear
on that myself either. I just really want to avoid duplicating that
stuff.
Sounds nuts. Doing a rare-write is many hundreds of cycles at best. Using that for a reference count sounds wacky.
Can we see a *real* use case before we over complicate the API?
Does patch #14 of this set not qualify? ima_htable.len ?
https://www.openwall.com/lists/kernel-hardening/2018/10/23/20
--
igor
