Sleep() method in AML

How does the current Linux implementation of the AML interpreter treat the Sleep() method? According to the ACPI spec, this method should relinquish the processor, so I would anticipate some form of mapping to the kernel msleep() function. However, to what extent is this true?

Does Sleep() actually permit other tasks to be scheduled, or does the AML interpreter just go into some form of delay loop for the required time? I ask because I'm hacking together some Smart Battery stuff in the DSDT, and the code uses a lot of Sleep() calls (to implement polling of the embedded controller). I was hoping that these calls would mean that the polling doesn't have much of an impact on the rest of the system; but I find I'm losing keypresses etc. during the execution of the code containing the Sleep() references. Any suggestions regarding how to fix this problem?

cheers,

Rich

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