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-rw-r--r--erts/doc/src/crash_dump.xml5
-rw-r--r--erts/doc/src/erl.xml3
-rw-r--r--erts/doc/src/erl_driver.xml3
3 files changed, 7 insertions, 4 deletions
diff --git a/erts/doc/src/crash_dump.xml b/erts/doc/src/crash_dump.xml
index d3de29b876..2b5fc877c3 100644
--- a/erts/doc/src/crash_dump.xml
+++ b/erts/doc/src/crash_dump.xml
@@ -115,8 +115,9 @@
sockets/pipes can be used simultaneously by Erlang (due to
limitations in the Unix <c><![CDATA[select]]></c> call). The number of
open regular files is not affected by this.</item>
- <item>"Received SIGUSR1" - The SIGUSR1 signal was sent to the
- Erlang machine (Unix only).</item>
+ <item>"Received SIGUSR1" - Sending the SIGUSR1 signal to a
+ Erlang machine (Unix only) forces a crash dump. This slogan reflects
+ that the Erlang machine crash-dumped due to receiving that signal.</item>
<item>"Kernel pid terminated (<em>Who</em>)
(<em>Exit-reason</em>)" - The kernel supervisor has detected
a failure, usually that the <c><![CDATA[application_controller]]></c>
diff --git a/erts/doc/src/erl.xml b/erts/doc/src/erl.xml
index f3ada61f3e..16000191dc 100644
--- a/erts/doc/src/erl.xml
+++ b/erts/doc/src/erl.xml
@@ -525,7 +525,8 @@
core dump and no crash dump if an internal error is detected.</p>
<p>Calling <c>erlang:halt/1</c> with a string argument will still
- produce a crash dump.</p>
+ produce a crash dump. On Unix systems, sending an emulator process
+ a SIGUSR1 signal will also force a crash dump.</p>
</item>
<tag><marker id="+e"><c><![CDATA[+e Number]]></c></marker></tag>
<item>
diff --git a/erts/doc/src/erl_driver.xml b/erts/doc/src/erl_driver.xml
index 4a1aab75c7..77fc906aca 100644
--- a/erts/doc/src/erl_driver.xml
+++ b/erts/doc/src/erl_driver.xml
@@ -2033,7 +2033,8 @@ ERL_DRV_MAP int sz
entry function is called. If <c>ready_async</c> is null in
the driver entry, the <c>async_free</c> function is called
instead.</p>
- <p>The return value is a handle to the asynchronous task.</p>
+ <p>The return value is -1 if the <c>driver_async</c> call
+ fails.</p>
<note>
<p>As of erts version 5.5.4.3 the default stack size for
threads in the async-thread pool is 16 kilowords,