Diff between various CPU masks

[Vignesh Radhakrishnan]

Hi,

I was going through the boot up  code and came across the following masks .


   - CPU online mask : The number of CPU's available for getting scheduled
   on
   - CPU active mask : The number of CPU's on which some task can be
   migrated to (not very clear as to the difference between online and active)
   - CPU present mask : Total number of CPU's limited by max cpu's variable
   - CPU possible mask : Total number of possible CPU's in the system


But i am not sure if my understanding is correct and wanted to validate the
same .

Thanks,

--Vignesh

http://vigneshradhakrishnan.blogspot.com/
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