Differential D45032

Boot option to mute console messages after the banner is displayed.
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Authored by nkumarababu_gmail.com on Tue, Apr 30, 8:42 PM.

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Summary

Added "-M" boot option (and "boot_mutemsgs" tunable) to mute boot
messages after the banner is displayed. Also display a message to
indicate we are muting boot messages.

This is favorable for embedded systems, as one can see that the
kernel booted, but avoid seeing all the probe messages that can
take significant time when using serial console.

Unmute the console if we panic.

Diff Detail

Repository

rG FreeBSD src repository

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Unit

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Build Status

Buildable 57475
Build 54363: arc lint + arc unit

Event Timeline

nkumarababu_gmail.com created this revision.Tue, Apr 30, 8:42 PM

Herald added subscribers: olce, imp. · View Herald TranscriptTue, Apr 30, 8:42 PM

nkumarababu_gmail.com requested review of this revision.Tue, Apr 30, 8:42 PM

Harbormaster completed remote builds in B57475: Diff 137912.Tue, Apr 30, 8:42 PM

nkumarababu_gmail.com mentioned this in D44935: Unmuting console boot messages for some scenarios.Tue, Apr 30, 8:44 PM

https://cgit.freebsd.org/src/commit/?id=2cb49090114108d594195b9b32c762391340484c

This change is already committed by Justin Hibbits. Abandoning this review.

Revision Contents
Changeset List

Path

Size

sys/

kern/

11 lines

kern_shutdown.c

3 lines

6 lines

sys/

1 line

Diff 137912

sys/kern/kern_cons.c

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sys/kern/kern_shutdown.c

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sys/kern/subr_boot.c

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sys/sys/reboot.h

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