CVS commit: src/sys

["Jason R Thorpe" <thorpej%netbsd.org@localhost>]

Module Name:    src
Committed By:   thorpej
Date:           Sat Oct 10 03:05:04 UTC 2020

Modified Files:
        src/sys/arch/alpha/alpha: clock.c cpu.c interrupt.c ipifuncs.c
        src/sys/arch/alpha/include: alpha.h cpu_counter.h intr.h
        src/sys/kern: kern_cctr.c
        src/sys/sys: cctr.h

Log Message:
Fix cycle counter-based time keeping on Alpha in MP environments by using
a simpler calibration algorithm for the CC timecounter.  Proposed in 2018
by Naruaki Etomi:

    https://mail-index.netbsd.org/tech-kern/2018/01/14/msg022940.html

This patch is largely based on the proposed change, but avoids changing
any other timecounter logic, and re-factors things a bit to keep them
as MI as possible.


To generate a diff of this commit:
cvs rdiff -u -r1.45 -r1.46 src/sys/arch/alpha/alpha/clock.c
cvs rdiff -u -r1.101 -r1.102 src/sys/arch/alpha/alpha/cpu.c
cvs rdiff -u -r1.91 -r1.92 src/sys/arch/alpha/alpha/interrupt.c
cvs rdiff -u -r1.53 -r1.54 src/sys/arch/alpha/alpha/ipifuncs.c
cvs rdiff -u -r1.42 -r1.43 src/sys/arch/alpha/include/alpha.h
cvs rdiff -u -r1.6 -r1.7 src/sys/arch/alpha/include/cpu_counter.h
cvs rdiff -u -r1.82 -r1.83 src/sys/arch/alpha/include/intr.h
cvs rdiff -u -r1.10 -r1.11 src/sys/kern/kern_cctr.c
cvs rdiff -u -r1.3 -r1.4 src/sys/sys/cctr.h

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.