help for BogoMIPS issue on linux kernel 3.0
jszhang3 at gmail.com
Wed Nov 30 04:30:34 EST 2011
I need your help. Currently, I'm porting Linux kernel to one arm SoC.
I came across one strange problem: the BogoMIPS isn't correct under
SMP, but it's correct under UP.
I tried give maxcpus=1, or disable L1/2 cache, both didn't help. Since
the any secondary cpu isn't booted up when bootcpu calls
calibrate_delay(), all the code should be the same, why the
calibrate_delay gives wrong BogoMIPS under SMP?
Thanks in advance,
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