Re: Spinlock lockup lockup in switch_mmu_context and task_rq_lock

2010-05-25 Thread Benjamin Herrenschmidt
On Tue, 2010-05-25 at 09:15 -0500, Li, Jianlin (Jianlin) wrote: > Hi, > > I am running 2.6.29.1 on MPC8572 dual core with SMP enabled on our customized > board. > > I have two applications running. One is to access CPLD registers via PCI bus > and then sleep in an endless loop, the other is to

Spinlock lockup lockup in switch_mmu_context and task_rq_lock

2010-05-25 Thread Li, Jianlin (Jianlin)
Hi, I am running 2.6.29.1 on MPC8572 dual core with SMP enabled on our customized board. I have two applications running. One is to access CPLD registers via PCI bus and then sleep in an endless loop, the other is to send (and of course receive data) via TSEC port in an endless loop. Sooner o