[PATCH] misc. kernel preemption bits
Misc. kernel preemption-related bits. Specifically, - update to Documentation/preempt-locking.txt (me) - preempt-safe arch/i386/kernel/ioport.c :: sys_ioperm() (George Anzinger) - remove "kernel_lock()" cruft in include/linux/smp.h (Andrew Morton) - we have a debug check in preempt_schedule that, even on detecting a schedule with irqs disabled, still goes ahead and reschedules. We should return. (me) - preempt-safe net/core/dev.c :: netif_rx() (George Anzinger)
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