On 18/05/2016 21:34, Peter Zijlstra wrote: >> I don't know of any enterprise distro that is shipping anything >> > more modern than 4.1? > RHEL 7 -- v3.10 > SLES 12 -- v3.12 > Debian Jessie -- v3.16 > Ubuntu 16.04 LTS -- v4.4 > > But waiting for the major enterprise distros (RHEL/SLES) would mean > another decade or so before people start using it. We don't usually wait > this long for anything.
We're looking at converting a few specific spinlocks to qspinlock in RHEL, though we cannot convert all of them due to the spin_lock_t ABI. It won't get into customer's hands for a while of course. Thanks, Paolo