Messages in this thread | | | Date | Sun, 20 Mar 2005 07:36:46 +0100 | From | Manfred Spraul <> | Subject | Re: Real-Time Preemption and RCU |
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Ingo Molnar wrote:
>which precise locking situation do you mean? > > > cpu 1: acquire random networking spin_lock_bh()
cpu 2: read_lock(&tasklist_lock) from process context interrupt. softirq. within softirq: try to acquire the networking lock. * spins.
cpu 1: hardware interrupt within hw interrupt: signal delivery. tries to acquire tasklist_lock.
--> deadlock.
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