test: Add testcase for #1001

Refs: #1001
Change-Id: I3edd750108bd3f887af1f0afe3f2651f1243062b

test/issues/1001/perf_tool.c

@@ -0,0 +1,54 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <string.h>
+#include <sys/ioctl.h>
+#include <linux/perf_event.h>
+#include <asm/unistd.h>
+
+#define WORKSIZE (1024 * 1024 * 32)
+#define LOOPSIZE 1000000
+#define REP 1000
+
+int perf_event_open(struct perf_event_attr *hw_event, pid_t pid,
+		int cpu, int group_fd, unsigned long flags)
+{
+	int ret;
+
+	ret = syscall(__NR_perf_event_open, hw_event, pid, cpu,
+		group_fd, flags);
+
+	return ret;
+}
+
+void memory_task(void)
+{
+	char *work = malloc(WORKSIZE);
+	char *fromaddr;
+	char *toaddr;
+	double r;
+	int offset;
+	int i;
+
+	for (i = 0; i < LOOPSIZE; i++) {
+		r = drand48();
+		offset = (int)(r * (double)WORKSIZE);
+		fromaddr = work + offset;
+		r = drand48();
+		offset = (int)(r * (double)WORKSIZE);
+		toaddr = work + offset;
+		*toaddr = *fromaddr;
+	}
+}
+
+void calc_task(void)
+{
+	int i, j;
+	double tmp;
+
+	for (i = 0; i < REP; i++) {
+		for (j = 0; j < REP; j++) {
+			tmp = drand48() * drand48();
+		}
+	}
+}