Exit immediately if all messages are disabled (#8799)

Don't print help

doc/whatsnew/fragments/8715.performance

@@ -0,0 +1,3 @@
+Exit immediately if all messages are disabled.
+
+Closes #8715

pylint/lint/run.py

@@ -175,9 +175,11 @@ def __init__(
                 sys.exit(code)
             return
 
-        # Display help messages if there are no files to lint
-        if not args:
-            print(linter.help())
+        # Display help if there are no files to lint or no checks enabled
+        if not args or len(linter.config.disable) == len(
+            linter.msgs_store._messages_definitions
+        ):
+            print("No files to lint: exiting.")
             sys.exit(32)
 
         if linter.config.jobs < 0:

tests/test_self.py

@@ -212,6 +212,11 @@ def test_nonexistent_config_file(self) -> None:
     def test_error_missing_arguments(self) -> None:
         self._runtest([], code=32)
 
+    def test_disable_all(self) -> None:
+        out = StringIO()
+        self._runtest([UNNECESSARY_LAMBDA, "--disable=all"], out=out, code=32)
+        assert "No files to lint: exiting." in out.getvalue().strip()
+
     def test_no_out_encoding(self) -> None:
         """Test redirection of stdout with non ascii characters."""
         # This test reproduces bug #48066 ; it happens when stdout is redirected