From 4b216f70be3403bb7c102e7ac1a91b1ee4805c33 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bj=C3=B6rn=20Gustavsson?= <bjorn@erlang.org>
Date: Fri, 12 May 2017 13:54:32 +0200
Subject: Let --enable-lock-counter build an additional emulator

"./configure --enable-lock-counter" would modify the behavior
of the default emulator (usually SMP).

To make lock counting more accessible, change --enable-lock-counter
to build an additional emulator in the same way as:

  (cd erts/emulator && make lcnt)

(The next commit will make it easier to start the built lock-counter
emulator.)
---
 erts/doc/src/erl.xml | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'erts/doc')

diff --git a/erts/doc/src/erl.xml b/erts/doc/src/erl.xml
index 6046e94599..e1aa5ce76e 100644
--- a/erts/doc/src/erl.xml
+++ b/erts/doc/src/erl.xml
@@ -239,6 +239,13 @@
       <item>
         <p>Useful for debugging. Prints the arguments sent to the emulator.</p>
       </item>
+      <tag><c><![CDATA[-emu_type Type]]></c></tag>
+      <item>
+        <p>Start an emulator of a different type. For example, to start
+	the lock-counter emualator, use <c>-emu_type lcnt</c>. (The emulator
+	must already be built. Use the <c>configure</c> option
+	<c>--enable-lock-counter</c> to build the lock-counter emulator.)</p>
+      </item>
       <tag><c><![CDATA[-env Variable Value]]></c></tag>
       <item>
         <p>Sets the host OS environment variable <c><![CDATA[Variable]]></c> to
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