1.1 --- a/VMS.c	Tue Jul 26 15:35:57 2011 +0200
     1.2 +++ b/VMS.c	Tue Jul 26 15:36:24 2011 +0200
     1.3 @@ -16,6 +16,9 @@
     1.4  #include "Queue_impl/BlockingQueue.h"
     1.5  #include "Histogram/Histogram.h"
     1.6  
     1.7 +#include <linux/perf_event.h>
     1.8 +#include <syscall.h>
     1.9 +#include <sys/prctl.h>
    1.10  
    1.11  #define thdAttrs NULL
    1.12  
    1.13 @@ -177,6 +180,43 @@
    1.14     #endif
    1.15     
    1.16     MakeTheMeasHists();
    1.17 +   
    1.18 +   #ifdef MEAS__PERF_COUNTER
    1.19 +   printf("Creating HW counters...");
    1.20 +   struct perf_event_attr hw_event;
    1.21 +   	hw_event.type = PERF_TYPE_HARDWARE;
    1.22 +	hw_event.size = sizeof(struct perf_event_attr);
    1.23 +	hw_event.disabled = 1;
    1.24 +	hw_event.inherit = 1; /* children inherit it   */
    1.25 +	hw_event.pinned = 1; /* must always be on PMU */
    1.26 +	hw_event.exclusive = 0; /* only group on PMU     */
    1.27 +	hw_event.exclude_user = 0; /* don't count user      */
    1.28 +	hw_event.exclude_kernel = 1; /* ditto kernel          */
    1.29 +	hw_event.exclude_hv = 1; /* ditto hypervisor      */
    1.30 +	hw_event.exclude_idle = 0; /* don't count when idle */
    1.31 +	hw_event.mmap = 0; /* include mmap data     */
    1.32 +	hw_event.comm = 0; /* include comm data     */
    1.33 +
    1.34 +   for( coreIdx = 0; coreIdx < NUM_CORES; coreIdx++ )
    1.35 +    {
    1.36 +       	hw_event.config = PERF_COUNT_HW_CPU_CYCLES; //cycles
    1.37 +        _VMSMasterEnv->cycles_counter_fd[coreIdx] = syscall(__NR_perf_event_open, &hw_event,
    1.38 + 		0,//pid_t pid, 
    1.39 +		coreIdx,//int cpu, 
    1.40 +		-1,//int group_fd,
    1.41 +		0//unsigned long flags
    1.42 +	);
    1.43 +        hw_event.config = PERF_COUNT_HW_INSTRUCTIONS; //instrs
    1.44 +        _VMSMasterEnv->instrs_counter_fd[coreIdx] = syscall(__NR_perf_event_open, &hw_event,
    1.45 + 		0,//pid_t pid, 
    1.46 +		coreIdx,//int cpu, 
    1.47 +		-1,//int group_fd,
    1.48 +		0//unsigned long flags
    1.49 +	);
    1.50 +   }
    1.51 +   prctl(PR_TASK_PERF_EVENTS_ENABLE);
    1.52 +   #endif
    1.53 +   
    1.54     //========================================================================
    1.55  
    1.56   }