Revert "Revert "rcu: Use smp_hotplug_thread facility for RCUs per-CPU kthread""

This reverts commit 91f2a99b6b053b85217bab55a53fed12f54235ba.
Revert "Fixups for sscan"

This reverts commit a0211783652c912fb6827937a6c60b93d58b79ae.
Revert "msm: kgsl: Remove sscanf() from kgsl_pwrctrl.c"

This reverts commit 758c8faa97774aac858eb9cc2086e55a76093335.
fuck you, bullshit
Revert "fuck you, bullshit"

This reverts commit f3f27c796d614eb63b712027f7c73c177d0a296e.
Revert "rcu: Yield simpler"

This reverts commit eaf6d3b2e604eb2ddd381e5d985f6a83cabba9f2.
Revert "rcu: Use smp_hotplug_thread facility for RCUs per-CPU kthread"

This reverts commit ab99663fc23fa155e266564b9afd667beba17e7f.
Assorted Makefile