CPU off power consumption

Paul Mackerras paulus at samba.org
Mon Dec 5 14:59:24 EST 2005

Giuliano Pochini writes:

> Any hint on how to debug it ?  Where is the code that enables/disables the
> cpus ?  Where is the sleep loop ?

The initial sleep loop is in ROM.  A CPU that is being offlined will
enter low_cpu_die() in arch/ppc/platforms/pmac_sleep.c and will go to
sleep at the mtmsr about 40 lines into that function.


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