rename kernel_module to kernel_modules, start README mass factorings

packages/kernel_modules/user/myrmmod.c

@@ -0,0 +1,24 @@
+/* https://github.com/cirosantilli/linux-kernel-module-cheat#myinsmod */
+
+#define _GNU_SOURCE
+#include <fcntl.h>
+#include <stdio.h>
+#include <sys/stat.h>
+#include <sys/syscall.h>
+#include <sys/types.h>
+#include <unistd.h>
+#include <stdlib.h>
+
+#define delete_module(name, flags) syscall(__NR_delete_module, name, flags)
+
+int main(int argc, char **argv) {
+	if (argc != 2) {
+		puts("Usage ./prog mymodule");
+		return EXIT_FAILURE;
+	}
+	if (delete_module(argv[1], O_NONBLOCK) != 0) {
+		perror("delete_module");
+		return EXIT_FAILURE;
+	}
+	return EXIT_SUCCESS;
+}