cvs commit: src/sys/sys timetc.h src/sys/kern kern_tc.c src/sys/i386/isa clock.c

[Scott Long]

Poul-Henning Kamp wrote:
> phk         2003/08/16 01:23:53 PDT
> 
>   FreeBSD src repository
> 
>   Modified files:
>     sys/sys              timetc.h 
>     sys/kern             kern_tc.c 
>     sys/dev/acpica       acpi_timer.c 
>     sys/i386/i386        tsc.c 
>     sys/i386/isa         clock.c 
>   Log:
>   Give timecounters a numeric quality field.
>   
>   A timecounter will be selected when registered if its quality is
>   not negative and no less than the current timecounters.
>   
>   Add a sysctl to report all available timecounters and their qualities.
>   
>   Give the dummy timecounter a solid negative quality of minus a million.
>   
>   Give the i8254 zero and the ACPI 1000.
>   
>   The TSC gets 800, unless APM or SMP forces it negative.
>   
>   Other timecounters default to zero quality and thereby retain current
>   selection behaviour.
>   
>   Revision  Changes    Path
>   1.23      +6 -5      src/sys/dev/acpica/acpi_timer.c
>   1.202     +16 -18    src/sys/i386/i386/tsc.c
>   1.203     +2 -1      src/sys/i386/isa/clock.c
>   1.154     +35 -8     src/sys/kern/kern_tc.c
>   1.58      +7 -0      src/sys/sys/timetc.h
> 


My Dell 8200 nows runs its clock at 2x speed.  My dmesg reports having
an 8254, TSC, and ACPI-fast counters, with the TSC being wildly variable
from boot to boot.

Scott