vscode: Refactor and add missing import

Thx to bear project

.vscode/c_cpp_properties.json

@@ -1,15 +1,38 @@
 {
     "configurations": [
-      {
-        "name": "Linux",
-        "includePath": [
-          "${workspaceFolder}/**",
-          "${env:C_INCLUDE_PATH}"
-        ],
-        "defines": [],
-        "cStandard": "c11",
-        "intelliSenseMode": "linux-gcc-x64"
-      }
+        {
+            "name": "Linux",
+            // BEGIN: Obtained from compile_commands.json generated with bear command
+            // Defined with -I args
+            "includePath": [
+                "${workspaceFolder}/**",
+                "${env:LINUX_MODULES_FOLDER}/source/arch/x86/include",
+                "${env:LINUX_MODULES_FOLDER}/source/include",
+                "${env:LINUX_MODULES_FOLDER}/source/arch/x86/include/uapi",
+                "${env:LINUX_MODULES_FOLDER}/source/include/uapi",
+                "${env:LINUX_MODULES_FOLDER}/build/arch/x86/include/generated",
+                "${env:LINUX_MODULES_FOLDER}/build/include"
+            ],
+            // Defined with -include
+            "forcedInclude": [
+                "${env:LINUX_MODULES_FOLDER}/source/include/linux/compiler-version.h",
+                "${env:LINUX_MODULES_FOLDER}/source/include/linux/kconfig.h",
+                "${env:LINUX_MODULES_FOLDER}/source/include/linux/compiler_types.h"
+            ],
+            // Defined with -D
+            "defines": [
+                "__KERNEL__",
+                "DCC_USING_FENTRY",
+                "MODULE",
+                "KBUILD_BASENAME=\"test_module\"",
+                "KBUILD_MODNAME=\"test_module\"",
+                "__KBUILD_MODNAME=kmod_test_module"
+            ],
+            // END
+            "cStandard": "c11",
+            "cppStandard": "c++14",
+            "intelliSenseMode": "linux-gcc-x64"
+        }
     ],
     "version": 4
-  }
+}

README.md

@@ -43,4 +43,16 @@ sudo rmmod [module_name].ko
 ## Usefull links
 
 - https://www.kernel.org/doc/html/latest/
-- https://elixir.bootlin.com/linux/v6.13/source/
+- https://elixir.bootlin.com/linux/v6.13/source/
+
+## Notes
+
+1. Find required headers files
+
+```
+nix shell nixpkgs#bear
+cd 01_basic_module/
+bear --append --output ../.vscode/compile_commands.json -- make -C $LINUX_MODULES_FOLDER/build M=$PWD modules
+```
+
+Search -I args and -D args

flake.nix

@@ -21,7 +21,6 @@
           packages = [ linux.moduleBuildDependencies ];
 
           LINUX_MODULES_FOLDER = "${linux.dev}/lib/modules/${linux.modDirVersion}";
-          C_INCLUDE_PATH = "${linux.dev}/lib/modules/${linux.modDirVersion}/source/include";
 
           shellHook = ''
             echo "Current Linux Kernel used : ${linux.version}"