split kernel module api docs to README

rootfs_overlay/params.sh

@@ -0,0 +1,15 @@
+#!/bin/sh
+set -e
+d=/sys/module/params/parameters
+i="${d}/i"
+j="${d}/j"
+insmod /params.ko
+# dmesg => 0 0
+[ "$(cat "$i")" = '1 0' ]
+printf 1 > "$i"
+# dmesg => 1 0
+rmmod params
+
+insmod /params.ko i=1 j=1
+# dmesg => 1 1
+rmmod params

rootfs_overlay/test_all.sh

@@ -7,6 +7,7 @@ for test in \
   /fops.sh \
   /ioctl.sh \
   /mmap.sh \
+  /params.sh \
   /procfs.sh \
   /seq_file.sh \
   /seq_file_single_open.sh \