> There's places in the kernel that does for_each_cpu() that I'm sure you > don't want to disable preemption for. Especially when you start having > 4096 CPU machines!
Er... why not? Seriously. If I have 4096 processors, and preemption is disabled on *one* of them for a long time, can't an urgent task just find a different processor to preempt? This seems like a non-problem. Or am I misunderstanding something about processor affinity? -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/