Messages in this thread |  | | Date | Sat, 1 Dec 2001 15:37:23 -0800 (PST) | From | Davide Libenzi <> | Subject | Re: [PATCH] task_struct colouring ... |
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On Sat, 1 Dec 2001, Alan Cox wrote:
> > The point is why store kernel pointers in global registers when You can > > achieve the same functionality, with a smaller patch, that does not need > > to be recoded for each CPU, without using global registers. > > Because it is much much much faster
We'll see how much faster is the global register allocation against code like :
movl %esp, %eax andl $-8192, %eax movl (%eax), %eax
Because you can justify a global register allocation only if this "much much faster" translates to a number that has sense.
- Davide
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