User Space:swapout (this is a rebase commit to merge into development)

test/user_space/swapout/swaptest.c

@@ -0,0 +1,81 @@
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#define BUF_SIZE	(32*1024)
+
+int	data[1024*1024];
+char	sym2[1024*1024] = { 10, 20, 30, 0 };
+char	sym3[1024*1024] = { 10, 20, 30, 0 };
+char	*sym1 = "aaaaaa";
+char	buffer[BUF_SIZE];
+char	*ptr1, *ptr2;
+char	fnamebuf[1024];
+
+int
+swapout(char *fname, void *buf, size_t sz, int flag)
+{
+    int		cc;
+    cc = syscall(801, fname, buf, sz, flag);
+    return cc;
+}
+int
+linux_mlock(const void *addr, size_t len)
+{
+    int		cc;
+    cc = syscall(802, addr, len);
+    return cc;
+}
+
+
+int
+main(int argc, char **argv)
+{
+    int		cc;
+    int		flag = 0;
+
+    if (argc == 2) {
+	flag = atoi(argv[1]);
+    }
+    switch (flag) {
+    case 1:
+	printf("skipping real paging for debugging and just calling swapout in Linux\n");
+	break;
+    case 2:
+	printf("skipping calling swapout in Linux\n");
+	break;
+    }
+    printf("&data = %p\n", data);
+    printf("&sym1 = %p\n", &sym1);
+    printf("&sym2 = %p\n", sym2);
+    printf("&sym3 = %p\n", sym3);
+    printf("&cc = %p\n", &cc);
+    ptr1 = malloc(1024);
+    ptr2 = malloc(1024*1024);
+    printf("ptr1 = %p\n", ptr1);
+    printf("ptr2 = %p\n", ptr2);
+    sprintf((char*) data, "hello\n");
+    /*
+     * testing mlock in mckernel side
+     */
+    cc = mlock(data, 16*1024);
+    printf("McKernel mlock returns: %d\n", cc);
+    /*
+     * testing mlock in linux side
+     */
+    cc = linux_mlock(data, 16*1024);
+    printf("linux_mlock returns: %d\n", cc);
+    strcpy(sym2, "returns: %d\n");
+    strcpy(sym3, "data =  %s\n");
+
+    /* buf area will be used in swapout systemcall for debugging */
+    strcpy(fnamebuf, "/tmp/pages");
+    cc = swapout(fnamebuf, buffer, BUF_SIZE, flag);
+    printf("swapout returns: %d\n", cc);
+    printf("data = %s", data);
+    printf(sym2, cc);
+    printf(sym3, data);
+    return 0;
+}