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CVS commit: src/sys/arch/x86

Module Name:    src
Committed By:   bouyer
Date:           Wed Feb  2 12:26:43 UTC 2011

Modified Files:
        src/sys/arch/x86/include: cpu_counter.h
        src/sys/arch/x86/x86: cpu.c tsc.c

Log Message:
Some CPU have cpu counter (CPUID_TSC is there) but don't handle the
rdmsr instruction (CPUID_MSR is not there).
Introduce a cpu_counter_serializing() function to remplace rdmsr(MSR_TSC)
calls, which does a rdmsr(MSR_TSC) if available and cpu_counter() otherwise.
This makes the cpu counter useable on vortex86 CPUs.
OK ad@

To generate a diff of this commit:
cvs rdiff -u -r1.4 -r1.5 src/sys/arch/x86/include/cpu_counter.h
cvs rdiff -u -r1.79 -r1.80 src/sys/arch/x86/x86/cpu.c
cvs rdiff -u -r1.27 -r1.28 src/sys/arch/x86/x86/tsc.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.

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