I confirmed the patch is in the upstream 3.19 kernel linux-3.19.y-queue branch. That means it should be in the next 3.19 upstream release: v3.19.8-ckt8. It will then make it's way into Vivid when the 3.19.8-ckt8 updates are applied to the Vivid kernel.
This is the commit in upstream 3.19:
commit 74686cbfa06190b821424133d0852815cbe338ad
Author: Jan H. Schönherr <email address hidden>
Date: Wed Aug 12 21:35:56 2015 +0200
I confirmed the patch is in the upstream 3.19 kernel linux-3.19.y-queue branch. That means it should be in the next 3.19 upstream release: v3.19.8-ckt8. It will then make it's way into Vivid when the 3.19.8-ckt8 updates are applied to the Vivid kernel.
This is the commit in upstream 3.19:
commit 74686cbfa06190b 821424133d08528 15cbe338ad
Author: Jan H. Schönherr <email address hidden>
Date: Wed Aug 12 21:35:56 2015 +0200
sched: Fix cpu_active_ mask/cpu_ online_ mask race