Remove a bogus #ifdef KTR stanza.

Noticed by: Alexander Langer <alex@big.endian.de>

Major update to the way synchronization is done in the kernel. Highlights
include:

* Mutual exclusion is used instead of spl*(). See mutex(9). (Note: The
alpha port is still in transition and c

Major update to the way synchronization is done in the kernel. Highlights
include:

* Mutual exclusion is used instead of spl*(). See mutex(9). (Note: The
alpha port is still in transition and currently uses both.)

* Per-CPU idle processes.

* Interrupts are run in their own separate kernel threads and can be
preempted (i386 only).

Partially contributed by: BSDi (BSD/OS)
Submissions by (at least): cp, dfr, dillon, grog, jake, jhb, sheldonh

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Previous commit changing SYSCTL_HANDLER_ARGS violated KNF.

Pointed out by: bde

Style police catches up with rev 1.26 of src/sys/sys/sysctl.h:

Sanitize SYSCTL_HANDLER_ARGS so that simplistic tools can grog our
sources:

-sysctl_vm_zone SYSCTL_HANDLER_ARGS
+sysct

Style police catches up with rev 1.26 of src/sys/sys/sysctl.h:

Sanitize SYSCTL_HANDLER_ARGS so that simplistic tools can grog our
sources:

-sysctl_vm_zone SYSCTL_HANDLER_ARGS
+sysctl_vm_zone (SYSCTL_HANDLER_ARGS)

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Isolate the Timecounter internals in their own two files.

Make the public interface more systematically named.

Remove the alternate method, it doesn't do any good, only ruins performance.

Add coun

Isolate the Timecounter internals in their own two files.

Make the public interface more systematically named.

Remove the alternate method, it doesn't do any good, only ruins performance.

Add counters to profile the usage of the 8 access functions.

Apply the beer-ware to my code.

The weird +/- counts are caused by two repocopies behind the scenes:
kern/kern_clock.c -> kern/kern_tc.c
sys/time.h -> sys/timetc.h
(thanks peter!)

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Fix sign reversal in adjtime(2).

Approved by: jkh

Make adjtime(2) adjust boottime so it doesn't cause non-monotonous
uptime.

Fixed some comments in statclock(). The previous commit made it clearer
that one comment was attached to null code.

Moved scheduling-related code to kern_synch.c so that it is easier to fix
and extend. The new function containing the code is named schedclock()
as in NetBSD, but it has slightly different semantics

Moved scheduling-related code to kern_synch.c so that it is easier to fix
and extend. The new function containing the code is named schedclock()
as in NetBSD, but it has slightly different semantics (it already handles
incrementation of p->p_cpticks, and it should handle any calling frequency).

Agreed with in principle by: dufault

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#ifdef PPS_SYNC around "kapi" declaration to fix a -Wunused warning.

Update the PPSAPI to draft-mogul-pps-api-05.txt which is the latest.

NOTE: This will break building ntpd until ntpd has been upgraded to also
support draft 05. People that want to build ntpd in the

Update the PPSAPI to draft-mogul-pps-api-05.txt which is the latest.

NOTE: This will break building ntpd until ntpd has been upgraded to also
support draft 05. People that want to build ntpd in the meantime can
get patches from me.

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Moved the definition of `boottime' and its sysctl to the correct file.

$Id$ -> $FreeBSD$

Oops, the previous commit only worked in the one case it was tested for.

Added a sysctl "kern.timecounter.hardware" for selecting the hardware
used for timecounting. The possible values are the names of the
physically present harware timecounters ("i8254" and "TSC" on i3

Added a sysctl "kern.timecounter.hardware" for selecting the hardware
used for timecounting. The possible values are the names of the
physically present harware timecounters ("i8254" and "TSC" on i386's).

Fixed some nearby bitrot in comments in <sys/time.h>.

Reviewed by: phk

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Remove four no-op casts.

Make the machdep.i8254_freq and machdep.tsc_freq sysctls modify the
timecounter as well

Asked for by: bde, jhay

Don't open window for race condition.

Detected by: Reg Clemens <reg@dwf.com>

Fix an old cut&paste bogon.

Noticed by: bde

Remove duplicate include.

Noticed by: bde

Make even more of the PPSAPI implementations generic.

FLL support in hardpps()

Various magic shuffles and improved comments

Style fixes from Bruce.

Integrate the new "nanokernel" PLL from Dave Mills.

This code is backwards compatible with the older "microkernel" PLL, but
allows ntpd v4 to use nanosecond resolution. Many other improvements.

PP

Integrate the new "nanokernel" PLL from Dave Mills.

This code is backwards compatible with the older "microkernel" PLL, but
allows ntpd v4 to use nanosecond resolution. Many other improvements.

PPS_SYNC and hardpps() are NOT supported yet.

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Introduce machine-dependent macro pgtok() to convert page count to number
of kilobytes. Its definition for each architecture could be optimized to
avoid potential numerical overflows.

Hide access to vmspace:vm_pmap with inline function vmspace_pmap(). This
is the preparation step for moving pmap storage out of vmspace proper.

Reviewed by: Alan Cox <alc@cs.rice.edu>
Matthew Dill

Hide access to vmspace:vm_pmap with inline function vmspace_pmap(). This
is the preparation step for moving pmap storage out of vmspace proper.

Reviewed by: Alan Cox <alc@cs.rice.edu>
Matthew Dillion <dillon@apollo.backplane.com>

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Make the previous behaviour the default, add a sysctl which you
can set if your hw/sw produces the "calcru negative..." message.

Setting the alternate method (sysctl -w kern.timecounter.method=1)
ma

Make the previous behaviour the default, add a sysctl which you
can set if your hw/sw produces the "calcru negative..." message.

Setting the alternate method (sysctl -w kern.timecounter.method=1)
makes the the get{nano|micro}*() functions call the real thing at
resulting in a measurable but minor overhead.

I decided to NOT have the "calcru" change the method automatically
because you should be aware of this problem if you have it.

The problems currently seen, related to usleep and a few other corners
are fixed for both methods.

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