Messages in this thread |  | | Date | Thu, 01 Nov 2001 11:49:23 +0100 | From | Manfred Spraul <> | Subject | Re: [PATCH] cache colour task_structs |
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Alan Cox wrote: > > > The attached patch moves the task structure into a slab, with normal > > cache colouring. > > It's tested with i386 SMP.(i.e. it boots and runs X) > > Keeping the stack and task struct together is smarter. You fix the one > problem but not the other horror. > If we keep both together we are limited to 8 kB for stack, task structure and slack for colouring - I'm not sure if that won't cause stack overruns. We are already down to 6.3 kB stack.
> We need to perturb esp colour too. It might be the right way to do this > is slab based kernel stacks, it might be that your code is cheaper than > the cost of getting current the really hard way and we should just add > random numbers to the initial esp of a task ? > Adding a random amount would be a one line change to copy_thread.
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