FYI: head -r357979 and powerd on Orange Pi+ 2ed (armv7,CortextA7): unable to kill at shutdown; no problem on old PowerMac G5

[Mark Millard]

[Also seen on prior head -r527529 context.]

I've got two contexts with powerd running
(both have non-debug kernels and worlds):

A) A system for old PowerMac G5's. It does not and did not
   have the problem.

B) A system for an Orange Pi+ 2ed (armv7, specifically
   CortexA7) that does. (No other armv7 context around to
   test.)

Recently shutdown has been doing the following if
powerd has been running on the armv7 system:

. . .
Stopping powerd.
Waiting for PIDS: 815
90 second watchdog timeout expired. Shutdown terminated.
Sun Feb 16 00:25:59 PST 2020
Feb 16 00:25:59 OPiP2E init[1]: /etc/rc.shutdown terminated abnormally, going to single user mode
Feb 16 00:25:59 OPiP2E syslogd: exiting on signal 15
2020-02-16T00:26:19.061233-08:00 OPiP2E init 1 - - some processes would not die; ps axl advised
Waiting (max 60 seconds) for system process `vnlru' to stop... done
Waiting (max 60 seconds) for system process `syncer' to stop... 
Syncing disks, vnodes remaining... 1 0 0 0 done
Waiting (max 60 seconds) for system thread `bufdaemon' to stop... done
Waiting (max 60 seconds) for system thread `bufspacedaemon-0' to stop... done
All buffers synced.
Uptime: 6m17s

For reference, top previously listed:

  PID USERNAME    PRI NICE   SIZE    RES STATE    C   TIME     CPU COMMAND
. . .
  815 root        -100    0  4424K  2000K twsi     0   0:00   0.01% /usr/sbin/powerd
. . .

I do have for my build (whitespace details might
not be fully preserved):

# svnlite diff /usr/src/sys/gnu/dts/arm/sun8i-h3-orangepi-pc.dts 
Index: /usr/src/sys/gnu/dts/arm/sun8i-h3-orangepi-pc.dts
===================================================================
--- /usr/src/sys/gnu/dts/arm/sun8i-h3-orangepi-pc.dts	(revision 357979)
+++ /usr/src/sys/gnu/dts/arm/sun8i-h3-orangepi-pc.dts	(working copy)
@@ -102,7 +102,7 @@
 		"Line Out", "LINEOUT",
 		"MIC1", "Mic",
 		"Mic",  "MBIAS";
-	status = "okay";
+	status = "disabled";
 };
 


but it has been a fairly long time since I've checked
if "okay" prevents booting/operating.


Note: Until there is an official fix checked in, the PowerMac
G5 needs Ryan L.'s slb_zone_init patch from:

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=244118

to boot anything at or after head -r357549. I also use other
patches for PowerMacs, mostly personal, but they are unlikely
to matter for why killing powerd works in this context.


===
Mark Millard
marklmi at yahoo.com
( dsl-only.net went
away in early 2018-Mar)