rusage: Refactor test programs

Change-Id: I846a6416acf903f7fa19db98d4d937c51c10b4af

test/rusage/015_mck.c

@@ -0,0 +1,55 @@
+#define _GNU_SOURCE         /* See feature_test_macros(7) */
+#include <unistd.h>
+#include <stdio.h>
+#include <sys/mman.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include "util.h"
+
+#define DEBUG
+
+int sz_unit[] = {
+	4 * (1ULL<<10),
+	2 * (1ULL<<20),
+	1 * (1ULL<<30)};
+
+#define SZ_INDEX 0
+
+int main(int argc, char **argv)
+{
+	void *mem;
+	int ret = 0;
+	int fd;
+
+	fd = open("./file", O_RDWR);
+	CHKANDJUMP(fd == -1, 255, "open failed\n");
+
+	mem = mmap(0, 2 * sz_unit[SZ_INDEX], PROT_READ | PROT_WRITE,
+		   MAP_SHARED, fd, 0);
+	CHKANDJUMP(mem == MAP_FAILED, 255, "mmap failed\n");
+
+	*((unsigned long *)mem) = 0x123456789abcdef0;
+	*(unsigned long *)((char *)mem + 1 * sz_unit[SZ_INDEX]) =
+		0xbeefbeefbeefbeef;
+
+	ret = remap_file_pages(mem + 0 * sz_unit[SZ_INDEX],
+			       sz_unit[SZ_INDEX], 0, 1, MAP_SHARED);
+	CHKANDJUMP(ret != 0, 255, "remap_file_pages failed\n");
+
+	ret = remap_file_pages(mem + 1 * sz_unit[SZ_INDEX],
+			       sz_unit[SZ_INDEX], 0, 0, MAP_SHARED);
+	CHKANDJUMP(ret != 0, 255, "remap_file_pages failed\n");
+
+	*((unsigned long *)mem) = 0x123456789abcdef0;
+	*(unsigned long *)((char *)mem + 1 * sz_unit[SZ_INDEX]) =
+		0xbeefbeefbeefbeef;
+
+	munmap(mem, 2 * sz_unit[SZ_INDEX]);
+
+ fn_exit:
+	return ret;
+ fn_fail:
+	goto fn_exit;
+}