add ebpf-required config (#6)

ericpaulsen · deansheather · web-flow · commit 68a42f8c984c · 2022-01-24T11:06:07.000-06:00
* add ebpf-required config

* update README.md

Co-authored-by: Dean Sheather &lt;dean@coder.com&gt;

* update README.md

Co-authored-by: Dean Sheather &lt;dean@coder.com&gt;

Co-authored-by: Dean Sheather &lt;dean@coder.com&gt;
diff --git a/README.md b/README.md
@@ -9,7 +9,17 @@ kernel to receive details about the `exec` family of syscalls.
 ## Requirements
 
 exectrace only supports Go 1.16+ and Linux kernel 5.8+ (due to the use of
-`BPF_MAP_TYPE_RINGBUF`).
+`BPF_MAP_TYPE_RINGBUF`). Additionally, the kernel config `CONFIG_DEBUG_INFO_BTF=y` is required.
+
+To validate this config is enabled, run either of the following commands directly on the system:
+
+```console
+cat /proc/config.gz | gunzip | grep CONFIG_DEBUG_INFO_BTF
+```
+
+```console
+$ cat "/boot/config-$(uname -r)" | grep CONFIG_DEBUG_INFO_BTF
+```
 
 ## Installation
 
