Add support for Power Button PMU events on non-ADB macs, such as aluminum
PowerBooks.

MFC after: 2 weeks
Relnotes: yes

Merge from head@274682

Sync to HEAD@r274095.

IFC @r273206

Add a sysctl to allow disabling the monitoring thread.

Summary:
If a user uses powerd, or doesn't want to use the cycles monitoring, they can
now suspend the monitoring thread.

While here, reorgani

Add a sysctl to allow disabling the monitoring thread.

Summary:
If a user uses powerd, or doesn't want to use the cycles monitoring, they can
now suspend the monitoring thread.

While here, reorganize the added prototypes to match existing groupings.

Reviewers: nwhitehorn, #powerpc, rpaulo

Reviewed By: #powerpc, rpaulo

Differential Revision: https://reviews.freebsd.org/D944
X-MFC-with: r273009

MFC after: 3 weeks

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Reintegrate head@r273095

Sponsored by: The FreeBSD Foundation

IFC @r273066

Add an AC line monitor so power_profile can work

Summary:
Add a polling loop (1Hz) to monitor the battery and AC status, to notify devd
like ACPI does for power monitoring. This allows /etc/rc.d/po

Add an AC line monitor so power_profile can work

Summary:
Add a polling loop (1Hz) to monitor the battery and AC status, to notify devd
like ACPI does for power monitoring. This allows /etc/rc.d/power_profile to
work on PowerPC laptops

Test Plan:
Tested on a Titanium PowerBook, configuring economy_cpu_freq and
performance_cpu_freq, disabling powerd.

Reviewers: #powerpc, nwhitehorn

Reviewed By: nwhitehorn

Subscribers: rpaulo

Differential Revision: https://reviews.freebsd.org/D937

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MFC @ r266724

An SVM update will follow this.

Merge head

IFC @264767

MFC @ r259635

This brings in the "-w" option from bhyve to ignore unknown MSRs.
It will make debugging Linux guests a bit easier.

Suggested by: Willem Jan Withagen (wjw at digiware nl)

MFH: tracking commit

Sponsored by: The FreeBSD Foundation

Merge head up to r262222 (last merge was incomplete).

Unbreak non-SMP builds. This was broken by r259284. Also, reorganize the
code introduced in that revision a bit.

Reviewed by: nwhitehorn
MFC after: 3 weeks

MFH@260917.

MFH: Tracking commit (r260891)

Sponsored by: The FreeBSD Foundation

There's actually no data in the PMU_GET_VERSION command. Don't send any.
This change now allows the PMU to be used on PowerBook5,8.

MFC after: 1 week

Add PMU-based CPU frequency scaling. This method is used on most Titanium
PowerBooks.

MFC after: 1 month

IFC @230489 (pending review).

IFC to head to catch up the bhyve branch

Approved by: grehan@

Fix style(9) issues from r228270.

Approved by: nwhitehorn (mentor)

Add a devd notification for closing/opening the lid on PowerBooks and iBooks.

Approved by: nwhitehorn (mentor)

- There's no need to overwrite the default device method with the default
one. Interestingly, these are actually the default for quite some time
(bus_generic_driver_added(9) since r52045 and bus_

- There's no need to overwrite the default device method with the default
one. Interestingly, these are actually the default for quite some time
(bus_generic_driver_added(9) since r52045 and bus_generic_print_child(9)
since r52045) but even recently added device drivers do this unnecessarily.
Discussed with: jhb, marcel
- While at it, use DEVMETHOD_END.
Discussed with: jhb
- Also while at it, use __FBSDID.

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Merge svn+ssh://svn.freebsd.org/base/head@214309