<sys/sysref.h>: Switch to lighter <sys/_malloc.h> header.

* Make <sys/sysref2.h> a kernel only header.
* Remove sys/types.h includes that follow <sys/param.h> in devfs(5).
* Add sys/malloc.h incl

<sys/sysref.h>: Switch to lighter <sys/_malloc.h> header.

* Make <sys/sysref2.h> a kernel only header.
* Remove sys/types.h includes that follow <sys/param.h> in devfs(5).
* Add sys/malloc.h includes where it is actually used in sources.

While there, minor whitespace cleanup.

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acpi/cpu/coretemp: Move sensor device from coretemp to acpi/cpu

So that more sensors from different drivers could attach to it.

coretemp: Utilize per-cpu sensor threads

This greatly simplifies the code.

coretemp: Add 'temp' to sensor description.

sensor: Factor out helper functions.

coretemp: Enhance data of devctl notify event.

coretemp: Add package level thermal sensor support

The temperature extracted from CPU package level thermal sensors are
exposed through sensor sysctl hw.sensors.cpu_nodeX.temp0 nodes.

coretemp: CORE_LEVEL node contains 0 children, if hyperthread is not enabled

Reported-by: YRabbit

coretemp: Indentation

coretemp: Avoid magic number

coretemp: Register sensor task for each core instead each HT

And replicate DTS readout to all HT sensors belonging to the same core.
DTS readout is actually only for cores.

coretemp: Clean up identify method

coretemp: Set Tj max to 110; 105 is quite common on Ivy Bridge CPUs.

coretemp: Set sensor status properly

coretemp: Add description for the sensor

coretemp: Keep the previous sensor value, if the IPI does not complete yet

coretemp: Use lwkt_send_ipiq_passive()

This makes coretemp even more lightweight.

coretemp: Use IPI to get temperature on other CPUs

This is more lightweight than CPU migration to run just one instruction.

sensor: Allocate task w/ M_WAITOK

And now sensor_task_register() will not fail.

coretemp(4): Add MODULE_VERSION.

kernel: Use DEVMETHOD_END in the drivers.

coretemp(4): Sync with FreeBSD.

kernel: Use cpu_vendor_id instead of strcmp(cpu_vendor, "...").

coretemp, sensors - Adjust spinlocks

* In kern_sensors, adjust the spinlocks to not be held across the sysctl
interface management.

* In coretemp, adjust illegal spinlock across calls to kern_sen

coretemp, sensors - Adjust spinlocks

* In kern_sensors, adjust the spinlocks to not be held across the sysctl
interface management.

* In coretemp, adjust illegal spinlock across calls to kern_sensors.

Reported-by: Matt Dillon (dillon@)

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kernel - Switch to exclusive spinlocks in the coretemp sensor

* No impact on performance.

* TODO: spinlocks are being held across major kernel calls in the
detach code which is not legal.