perf_event_open: Add support for counting REF_CPU_CYCLES

Using thread's tsc count instead of performance counter

Refs: #1025
Change-Id: I1d7a18f1c52f1d52087002d31818638a6b206014

test/issues/1025/check_val.sh

@@ -0,0 +1,25 @@
+#!/bin/sh
+
+if [ $# -lt 4 ]; then
+	echo "usage: $(basename $0) <base_val> <tgt_val> \
+<lower_coef> <upper_coef>"
+	exit 1
+fi
+
+base_val=$1
+tgt_val=$2
+l_coef=$3
+u_coef=$4
+
+lower=`echo "scale=1; ${base_val} * ${l_coef}" | bc`
+upper=`echo "scale=1; ${base_val} * ${u_coef}" | bc`
+
+if [ "$(echo "${tgt_val} > ${lower}" | bc)" -eq 1 -a \
+	 "$(echo "${tgt_val} < ${upper}" | bc)" -eq 1 ] ||
+	[ ${base_val} -eq ${tgt_val} ]; then
+	echo " ${tgt_val} is IN ${lower} - ${upper} [OK]"
+	exit 0
+else
+	echo " ${tgt_val} is OUT ${lower} - ${upper} [NG]"
+	exit 1
+fi