IFC @ r234692

sys/amd64/include/cpufunc.h
sys/amd64/include/fpu.h
sys/amd64/amd64/fpu.c
sys/amd64/vmm/vmm.c

- Add API to allow vmm FPU state init/save/restore.

FP stuff discussed with: kib

Merge head r232686 through r233825 into projects/pf/head.

Instead of only iterating over the set of known SDT probes when sdt.ko is
loaded and unloaded, also have sdt.ko register callbacks with kern_sdt.c
that will be called when a newly loaded KLD module a

Instead of only iterating over the set of known SDT probes when sdt.ko is
loaded and unloaded, also have sdt.ko register callbacks with kern_sdt.c
that will be called when a newly loaded KLD module adds more probes or
a module with probes is unloaded.

This fixes two issues: first, if a module with SDT probes was loaded after
sdt.ko was loaded, those new probes would not be available in DTrace.
Second, if a module with SDT probes was unloaded while sdt.ko was loaded,
the kernel would panic the next time DTrace had cause to try and do
anything with the no-longer-existent probes.

This makes it possible to create SDT probes in KLD modules, although there
are still two caveats: first, any SDT probes in a KLD module must be part
of a DTrace provider that is defined in that module. At present DTrace
only destroys probes when the provider is destroyed, so you can still
panic the system if a KLD module creates new probes in a provider from a
different module(including the kernel) and then unload the the first module.

Second, the system will panic if you unload a module containing SDT probes
while there is an active D script that has enabled those probes.

MFC after: 1 month

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Merge svn+ssh://svn.freebsd.org/base/head@209749

Use ISO C99 integer types in sys/kern where possible.

There are only about 100 occurences of the BSD-specific u_int*_t
datatypes in sys/kern. The ISO C99 integer types are used here more
often.

Add kernel support for the Statically Defined Trace provider.

This is BSD licensed code written specifically for FreeBSD.

It initialises using SYSINIT so that the SDT provider, probe and
argument d

Add kernel support for the Statically Defined Trace provider.

This is BSD licensed code written specifically for FreeBSD.

It initialises using SYSINIT so that the SDT provider, probe and
argument description linkage is done whenever a module is loaded,
regardless of whether the DTrace modules are loaded or not.

This file is optionally compiled into the kernel if the KDTRACE_HOOKS
option is defined.

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Add kernel support for the Statically Defined Trace provider.

This is BSD licensed code written specifically for FreeBSD.

It initialises using SYSINIT so that the SDT provider, probe and
argument d

Add kernel support for the Statically Defined Trace provider.

This is BSD licensed code written specifically for FreeBSD.

It initialises using SYSINIT so that the SDT provider, probe and
argument description linkage is done whenever a module is loaded,
regardless of whether the DTrace modules are loaded or not.

This file is optionally compiled into the kernel if the KDTRACE_HOOKS
option is defined.

show more ...