diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..717eb68
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,39 @@
+# Important directories.
+/out
+# https://cirosantilli.com/linux-kernel-module-cheat#docker
+/out.docker
+/data
+
+# Temporary files.
+*.tmp
+tmp.*
+*.tmp.*
+*~
+*.gitignore
+gitignore.*
+
+# https://cirosantilli.com/linux-kernel-module-cheat#prebuilt
+/lkmc-*.zip
+
+# https://cirosantilli.com/linux-kernel-module-cheat#bst-vs-heap-vs-hashmap
+*.dat
+
+# Python trash.
+*.pyc
+__pycache__
+
+# Accidents.
+/core
+/m5out
+*.o
+*.out
+
+# Kernel modules.
+*.ko
+*.ko.cmd
+*.mod.c
+*.o.cmd
+.cache.mk
+.tmp_versions
+Module.symvers
+modules.order