prctl: Add support for PR_SET_THP_DISABLE and PR_GET_THP_DISABLE

Change-Id: I04c5568a9eb78bcac632b734f34bba49cf602c4d
Refs: #1181

test/issues/1181/shm_large.c

@@ -0,0 +1,37 @@
+#include <stdio.h>
+#include <unistd.h>
+#include <string.h>
+#include <sys/mman.h>
+#include <sys/ipc.h>
+#include <sys/shm.h>
+
+#define SHM_SIZE (16 << 20)
+
+int main(int argc, char **argv)
+{
+	void *shm = NULL;
+	key_t key = ftok(argv[0], 0);
+	int shmid;
+	struct shmid_ds buf;
+
+	shmid = shmget(key, SHM_SIZE, IPC_CREAT | 0660);
+	if (shmid < 0) {
+		perror("shmget: ");
+		return -1;
+	}
+
+	shm = shmat(shmid, NULL, 0);
+	if (!shm) {
+		perror("shmat: ");
+		return -1;
+	}
+
+	printf("shmat to %p, size: %ldM\n", shm, SHM_SIZE / 1024 / 1024);
+	memset(shm, 0, SHM_SIZE);
+
+	shmdt(shm);
+
+	shmctl(shmid, IPC_RMID, &buf);
+
+	return 0;
+}