diff --git a/.gitmodules b/.gitmodules
index 75faaba7151..9ad207a0d52 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -43,3 +43,7 @@
 	path = library/backtrace
 	url = https://github.com/rust-lang/backtrace-rs.git
 	shallow = true
+[submodule "src/tools/rustc-perf"]
+	path = src/tools/rustc-perf
+	url = https://github.com/rust-lang/rustc-perf.git
+	shallow = true
diff --git a/rustfmt.toml b/rustfmt.toml
index 850d01ea7cb..ef56059feb1 100644
--- a/rustfmt.toml
+++ b/rustfmt.toml
@@ -40,6 +40,7 @@ ignore = [
     "src/tools/clippy",
     "src/tools/miri",
     "src/tools/rust-analyzer",
+    "src/tools/rustc-perf",
     "src/tools/rustfmt",
 
     # these are ignored by a standard cargo fmt run
diff --git a/src/tools/rustc-perf b/src/tools/rustc-perf
new file mode 160000
index 00000000000..4f313add609
--- /dev/null
+++ b/src/tools/rustc-perf
@@ -0,0 +1 @@
+Subproject commit 4f313add609f43e928e98132358e8426ed3969ae
diff --git a/src/tools/tidy/config/black.toml b/src/tools/tidy/config/black.toml
index 51a722979f5..e73847a93ba 100644
--- a/src/tools/tidy/config/black.toml
+++ b/src/tools/tidy/config/black.toml
@@ -11,5 +11,6 @@ extend-exclude = """(\
     src/doc/edition-guide/|\
     src/llvm-project/|\
     src/doc/embedded-book/|\
+    src/tools/rustc-perf/|\
     library/backtrace/
     )"""
diff --git a/src/tools/tidy/config/ruff.toml b/src/tools/tidy/config/ruff.toml
index cf08c62648b..cf89ffd9ac7 100644
--- a/src/tools/tidy/config/ruff.toml
+++ b/src/tools/tidy/config/ruff.toml
@@ -26,6 +26,7 @@ extend-exclude = [
     "src/llvm-project/",
     "src/doc/embedded-book/",
     "library/backtrace/",
+    "src/tools/rustc-perf/",
     # Hack: CI runs from a subdirectory under the main checkout
     "../src/doc/nomicon/",
     "../src/tools/cargo/",
@@ -38,4 +39,5 @@ extend-exclude = [
     "../src/llvm-project/",
     "../src/doc/embedded-book/",
     "../library/backtrace/",
+    "../src/tools/rustc-perf/",
 ]
diff --git a/src/tools/tidy/src/walk.rs b/src/tools/tidy/src/walk.rs
index 851c21f1c0f..f68b7675c76 100644
--- a/src/tools/tidy/src/walk.rs
+++ b/src/tools/tidy/src/walk.rs
@@ -18,6 +18,7 @@ pub fn filter_dirs(path: &Path) -> bool {
         "src/tools/clippy",
         "src/tools/miri",
         "src/tools/rust-analyzer",
+        "src/tools/rustc-perf",
         "src/tools/rustfmt",
         "src/doc/book",
         "src/doc/edition-guide",