Date: Sat, 8 Oct 2005 09:13:35 +0530 From: Joseph Koshy <joseph.koshy@gmail.com> To: freebsd-arch@freebsd.org Subject: Determining CPU topology on multi-core CPUs Message-ID: <84dead720510072043x45a2181ch5eea8cbfe9ea50cb@mail.gmail.com>
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On multi-core P4/HTT CPU packages I need to distinguish between physically distinct CPUs in separate cores from HT CPU (a.k.a., 'threads') pairs. What is the best way a driver can obtain the CPU topology of a system? The bits in 'logical_cpus_mask' do not distinguish between multi-core and HT cpus. -- FreeBSD Volunteer, http://people.freebsd.org/~jkoshy
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