Merge branch 'sched/urgent' into sched/core, to pick up fixes

Signed-off-by: Ingo Molnar <mingo@kernel.org>

diff --cc Documentation/admin-guide/sysctl/kernel.rst
Simple merge

diff --cc arch/x86/kernel/smpboot.c
Simple merge

diff --cc kernel/sched/fair.c
Simple merge

diff --cc kernel/sysctl.c
Simple merge