From b228947b6863f5864b48bb3a7f3dcca921f58d0b Mon Sep 17 00:00:00 2001
From: Aleksey Kladov <aleksey.kladov@gmail.com>
Date: Sun, 14 Apr 2019 23:04:08 +0300
Subject: cleanup syntax

---
 docs/dev/README.md | 10 ++++++++++
 1 file changed, 10 insertions(+)

(limited to 'docs/dev')

diff --git a/docs/dev/README.md b/docs/dev/README.md
index 7bb323f3f..7fb5886c9 100644
--- a/docs/dev/README.md
+++ b/docs/dev/README.md
@@ -135,3 +135,13 @@ There's also two VS Code commands which might be of interest:
   There's an alias for this: `cargo jinstall-lsp`.
 
 * `Rust Analyzer: Syntax Tree` shows syntax tree of the current file/selection.
+
+# Profiling
+
+We have a built-in hierarchical profiler, you can enable it by using `RA_PROF` env-var:
+
+```
+RA_PROFILE=*             // dump everything
+RA_PROFILE=foo|bar|baz   // enabled only selected entries
+RA_PROFILE=*@3           // dump everything, up to depth 3
+```
-- 
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