My question is, what is the reliable way for user space program
to detect the number of physical CPU in the current machine?
If in it is in the kernel, I can read from cpu_sibling_map[]
or phys_cpu_id[]. But it seems not easy read that from
user space.
Of course I can do "gdb /proc/kcore" to get them. But is there
any better way?
Thanks in advance.
Chris
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