On 02/07/2011 05:38 PM, Jan Kiszka wrote:
> > I don't know as it is allowed to sleep, it doesn't call any sleeping > functions to my knowledge. What worries me in the RT case is that the > spinlock acquired for hardware_enable might be preempted and run on > another CPU, which obviously isn't what you want. I see now, there are calls to raw_smp_processor_id. I think it's best to make this a raw lock. At this chance, some read-only users of vm_list should be rcu'ified. Will have a look.
vm_list is rarely used, for either read or write. I don't see the need to rcu it.
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