support PERF_TYPE_{HARDWARE|HW_CACHE} in perf_event_open

refs #829

test/perf_event/perftool.c

@@ -0,0 +1,99 @@
+#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>
+
+//#include "perftool.h"
+
+#define WORKSIZE (1024 * 1024 * 32)
+#define LOOPSIZE 1000000
+#define REP 1000
+
+long
+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;
+}
+
+long
+pe_opener(long group_fd, int mode, int type, unsigned long config)
+{
+	struct perf_event_attr pe;
+	int fd;
+	long long perf_hw_cache_id;
+	long long perf_hw_cache_op_id;
+	long long perf_hw_cache_op_result_id;
+
+	memset(&pe, 0, sizeof(struct perf_event_attr));
+	pe.type = type;
+	pe.size = sizeof(struct perf_event_attr);
+	pe.config = config;
+	pe.disabled = 1;
+	if (mode & 0x01) {
+		pe.exclude_user = 1; // EXCLUDE EVENTS THAT HAPPEN IN USER-SPACE
+	} else {
+		pe.exclude_user = 0; // INCLUDE EVENTS THAT HAPPEN IN USER-SPACE
+	}
+	if (mode & 0x02) {
+		pe.exclude_kernel = 1; // EXCUDE EVENTS THAT HAPPEN IN KERNEL-SPACE
+	} else {
+		pe.exclude_kernel = 0; // INCUDE EVENTS THAT HAPPEN IN KERNEL-SPACE
+	}
+	pe.exclude_hv = 1;
+	if (group_fd > 0) {
+		pe.read_format = PERF_FORMAT_GROUP;
+	}
+
+	fd = perf_event_open(&pe, 0, -1, group_fd, 0);
+
+	return fd;
+}
+
+long long
+hw_cache_build(long long id, long long op_id, long long op_result_id)
+{
+	return (id) | (op_id << 8) | (op_result_id << 16);
+}
+
+void
+memory_task()
+{
+	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()
+{
+	int i, j;
+	double tmp;
+
+	for (i = 0; i < REP; i++) {
+		for (j = 0; j < REP; j++) {
+			tmp = drand48() * drand48();
+		}
+	}
+}
+