Revert "sched: don't call get_group() for covered cpus"

This reverts commit fbe8385de7e756496fb36aeb216bf617f8b70ce8.
Revert "sched: Use cached value of span instead of calling sched_domain_span()"

This reverts commit 4e7d1f44e7c590c7e78e26cf6e9b3df8c49c51b8.
Revert "patch: rwsem"

This reverts commit 9129adace7010cc9bf287877e649ffb0e06a7528.
Revert "fix: pmdata sleep"

This reverts commit f4905b58d5255eadd5f8409adb8c5331988f6647.