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Differential D17764

Optional prevention of console suspend
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Authored by bwidawsk on Oct 30 2018, 7:36 PM.
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Subscribers
emaste
jhibbits
manu
scottl
scottph

Details

Reviewers
jhb
Summary

Provide a way to stop suspending of console on x86 platforms. Similarmechanisms could be done for ARM and PPC devices.

Test Plan

Tested on my machine with VGA (verified the print was seen before
suspend). I don't have a machine I can test with that has a serial port.

Diff Detail

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Unit
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Build Status
Buildable 20516
Build 19944: arc lint + arc unit

Event Timeline

bwidawsk created this revision.Oct 30 2018, 7:36 PM
Harbormaster completed remote builds in B20516: Diff 49803.Oct 30 2018, 7:36 PM
bwidawsk retitled this revision from Summary: Provide a way to stop suspending of console on x86 platforms. Similar mechanisms could be done for ARM and PPC devices. to Optional prevention of console suspend.Oct 30 2018, 7:37 PM
bwidawsk edited the summary of this revision. (Show Details)
bwidawsk edited reviewers, added: jhb; removed: imp.
bwidawsk added a subscriber: emaste.
bwidawsk added a comment.Oct 30 2018, 7:39 PM

I have two subsequent ideas which I may or may not get around to:

  1. Resume the input device when in VGA
  2. Resume the DUMPDEV (if you do not do this and panic during suspend, you cannot get core).
scottph added a subscriber: scottph.Nov 29 2018, 7:49 PM
scottl added a subscriber: scottl.Jun 12 2019, 1:10 PM

Revision Contents
Changeset List

PathSize
sys/
dev/
uart/
8 lines
kern/
59 lines
sys/
3 lines

Diff 49803

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sys/dev/uart/uart_tty.c

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sys/kern/subr_bus.c

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sys/sys/bus.h

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