prctl: Add support for PR_SET_THP_DISABLE and PR_GET_THP_DISABLE

Change-Id: I04c5568a9eb78bcac632b734f34bba49cf602c4d
Refs: #1181

test/issues/1181/mmap_hugetlbfs.c

@@ -0,0 +1,72 @@
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <sys/mman.h>
+
+#define PAGE_SHIFT_2M 21
+#define PAGE_SIZE_2M (1UL << PAGE_SHIFT_2M)
+char fn_2M[] = "/mnt/hugetlbfs-2M/tmp";
+
+#define PAGE_SHIFT_1G 30
+#define PAGE_SIZE_1G (1UL << PAGE_SHIFT_1G)
+char fn_1G[] = "/mnt/hugetlbfs-1G/tmp";
+
+int trial_num;
+
+int mmap_hugetlbfs(char *fn, size_t page_size)
+{
+	int fd;
+	char *addr_mmap;
+
+	fd = open(fn, O_CREAT | O_RDWR, 0755);
+	if (fd == -1) {
+		printf("open failed, fn:%s\n");
+		goto fn_fail;
+	}
+
+	addr_mmap = mmap(0, page_size,
+			 PROT_READ | PROT_WRITE,
+			 MAP_SHARED,
+			 fd, 0);
+	if (addr_mmap == (void *)-1) {
+		printf("mmap failed\n");
+		goto fn_fail;
+	}
+	addr_mmap[0] = 'z';
+
+	printf("large page request, addr: %016lx, size: %ld\n",
+	       (unsigned long)addr_mmap, page_size);
+
+	munmap(addr_mmap, page_size);
+	close(fd);
+	unlink(fn);
+
+	return 0;
+ fn_fail:
+	return 1;
+}
+
+int main(int argc, char **argv)
+{
+	int ret;
+
+	ret = mmap_hugetlbfs(fn_2M, PAGE_SIZE_2M);
+	if (ret != 0) {
+		printf("mmap_hugetlbfs failed, fn: %s", fn_2M);
+		goto fn_fail;
+	}
+
+	ret = mmap_hugetlbfs(fn_1G, PAGE_SIZE_1G);
+	if (ret != 0) {
+		printf("mmap_hugetlbfs failed, fn: %s", fn_1G);
+		goto fn_fail;
+	}
+
+	return 0;
+ fn_fail:
+	return 1;
+}