Bug 1292537

+++ This bug was initially created as a clone of Bug #1286221 +++

Description of problem:

Tuna is not moving threads away from isolated (-i) CPUs.

Version-Release number of selected component (if applicable):
tuna-0.11.1-10.el7.noarch

How reproducible:
Always

Steps to Reproduce:
1. Isolate some CPUs using tuna. For example, on a 4 CPUs box isolate the CPUs
2 and 3.

# tuna -c 2,3 -i

2. Check the cpumask of all threads of a threaded application. For example, on
a RHEL7, check the cpumask of tuned's threads:

# ps -eLo lwp,comm | grep " tuned"  | while read lwp comm; do taskset -p $lwp; done

Actual results:
Only the threads with the same PID/TID has the correct cpumask (excluding
isolated CPUs). For example:

# ps -eLo lwp,comm | grep " tuned"  | while read lwp comm; do taskset -p $lwp; done
pid 761's current affinity mask: 3
pid 820's current affinity mask: f
pid 822's current affinity mask: f
pid 829's current affinity mask: f


Expected results:
All threads with the correct cpumask (excluding isolated CPUs) set. For example

# ps -eLo lwp,comm | grep " tuned"  | while read lwp comm; do taskset -p $lwp; done
pid 761's current affinity mask: 3
pid 820's current affinity mask: 3
pid 822's current affinity mask: 3
pid 829's current affinity mask: 3

Additional info:
tuna-0.11.1-8.el7.noarch works fine.

--- Additional comment from Daniel Bristot de Oliveira on 2015-11-27 14:30:33 EST ---

Upstream patch commit:

https://git.kernel.org/cgit/utils/tuna/tuna.git/commit/?id=95c4e2ad2603cd29af1357c0ceb780da8dc161cc