From 2b7dd084a33d82f164bf605fa7e18286a55474a1 Mon Sep 17 00:00:00 2001
From: Alona Enraght-Moony <code@alona.page>
Date: Wed, 26 Apr 2023 14:55:30 +0000
Subject: [PATCH] rustdoc-json: Time serialization.

---
 src/librustdoc/json/mod.rs | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/librustdoc/json/mod.rs b/src/librustdoc/json/mod.rs
index d6da6e0993894..9392dd4d08825 100644
--- a/src/librustdoc/json/mod.rs
+++ b/src/librustdoc/json/mod.rs
@@ -279,7 +279,10 @@ impl<'tcx> FormatRenderer<'tcx> for JsonRenderer<'tcx> {
         p.push(output.index.get(&output.root).unwrap().name.clone().unwrap());
         p.set_extension("json");
         let mut file = BufWriter::new(try_err!(File::create(&p), p));
-        serde_json::ser::to_writer(&mut file, &output).unwrap();
+        self.tcx
+            .sess
+            .time("rustdoc_json_serialization", || serde_json::ser::to_writer(&mut file, &output))
+            .unwrap();
         try_err!(file.flush(), p);
 
         Ok(())