> - a bitmap based matrix vector allocator, but that shouldn't be rocket > science to write one.
Not rocket science - but some tricky corner cases to make sure all the allocations will fit. MSI needs blocks of irqs that start on a power-of-two boundary so the h/w can just fiddle with low order bits. We'll see the requests for allocation in some random order (rather than the more convenient "largest block first"). We also have to handle hotplug events adding and removing (and generally messing up the neat layout). In the worst case we might need a callback to a driver to tell it that we need to move irqs previously allocated to some new range in order to free a contiguous block. -Tony -- 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/
