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rneugeba@wyvis.research.intel-research.net
3bd36ccc50
forward ported James Bulpin's performance counters tool Signed-off-by: michael.fetterman@cl.cam.ac.uk
39 lines
746 B
C
39 lines
746 B
C
/*
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* Interface to Xen MSR hypercalls.
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*
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* $Id: cpuperf_xeno.h,v 1.1 2003/10/13 16:49:44 jrb44 Exp $
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*
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* $Log: cpuperf_xeno.h,v $
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* Revision 1.1 2003/10/13 16:49:44 jrb44
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* Initial revision
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*
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*/
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#include <xc.h>
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static int xc_handle;
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void xen_init()
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{
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if ( (xc_handle = xc_interface_open()) == -1 )
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{
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fprintf(stderr, "Error opening xc interface: %d (%s)\n",
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errno, strerror(errno));
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exit(-1);
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}
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}
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void dom0_wrmsr( int cpu_mask, int msr, unsigned int low, unsigned int high )
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{
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xc_msr_write (xc_handle, cpu_mask, msr, low, high);
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}
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unsigned long long dom0_rdmsr( int cpu_mask, int msr )
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{
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return xc_msr_read(xc_handle, cpu_mask, msr);
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}
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// End of $RCSfile: cpuperf_xeno.h,v $
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