[PATCH RT 07/16] kernel/cpu: fix cpu down problem if kthreads cpu is going down

2013-09-09 Thread Steven Rostedt
From: Sebastian Andrzej Siewior If kthread is pinned to CPUx and CPUx is going down then we get into trouble: - first the unplug thread is created - it will set itself to hp->unplug. As a result, every task that is going to take a lock, has to leave the CPU. - the CPU_DOWN_PREPARE notifier are

[PATCH RT 07/16] kernel/cpu: fix cpu down problem if kthreads cpu is going down

2013-09-09 Thread Steven Rostedt
From: Sebastian Andrzej Siewior If kthread is pinned to CPUx and CPUx is going down then we get into trouble: - first the unplug thread is created - it will set itself to hp->unplug. As a result, every task that is going to take a lock, has to leave the CPU. - the CPU_DOWN_PREPARE notifier are

[PATCH RT 07/16] kernel/cpu: fix cpu down problem if kthreads cpu is going down

2013-09-09 Thread Steven Rostedt
From: Sebastian Andrzej Siewior If kthread is pinned to CPUx and CPUx is going down then we get into trouble: - first the unplug thread is created - it will set itself to hp->unplug. As a result, every task that is going to take a lock, has to leave the CPU. - the CPU_DOWN_PREPARE notifier are