[PATCH 4.17 27/63] stop_machine: Disable preemption when waking two stopper threads

4.17-stable review patch. If anyone has any objections, please let me know. -- From: Isaac J. Manjarres commit 9fb8d5dc4b649dd190e1af4ead670753e71bf907 upstream. When cpu_stop_queue_two_works() begins to wake the stopper threads, it does so without preemption disabled, which

[PATCH 4.17 27/63] stop_machine: Disable preemption when waking two stopper threads

4.17-stable review patch. If anyone has any objections, please let me know. -- From: Isaac J. Manjarres commit 9fb8d5dc4b649dd190e1af4ead670753e71bf907 upstream. When cpu_stop_queue_two_works() begins to wake the stopper threads, it does so without preemption disabled, which