Date: Sun, 3 Aug 2003 22:13:19 -0700 (PDT) From: Marcel Moolenaar <marcel@FreeBSD.org> To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/ia64/ia64 clock.c interrupt.c machdep.c mp_machdep.c timerreg.h src/sys/ia64/include clock.h cpu.h pcpu.h Message-ID: <200308040513.h745DJkv078949@repoman.freebsd.org>
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marcel 2003/08/03 22:13:19 PDT
FreeBSD src repository
Modified files:
sys/ia64/ia64 clock.c interrupt.c machdep.c
mp_machdep.c
sys/ia64/include clock.h cpu.h pcpu.h
Removed files:
sys/ia64/ia64 timerreg.h
Log:
Cleanup the clock code. This includes:
o Remove alpha specific timer code (mc146818A) and compiled-out
calibration of said timer.
o Remove i386 inherited timer code (i8253) and related acquire and
release functions.
o Move sysbeep() from clock.c to machdep.c and have it return
ENODEV. Console beeps should be implemented using ACPI or if no
such device is described, using the sound driver.
o Move the sysctls related to adjkerntz, disable_rtc_set and
wall_cmos_clock from machdep.c to clock.c, where the variables
are.
o Don't hardcode a hz value of 1024 in cpu_initclocks() and don't
bother faking a stathz that's 1/8 of that. Keep it simple: hz
defaults to HZ and stathz equals hz. This is also how it's done
for sparc64.
o Keep a per-CPU ITC counter (pc_clock) and adjustment (pc_clockadj)
to calculate ITC skew and corrections. On average, we adjust the
ITC match register once every ~1500 interrupts for a duration of
2 consequtive interruprs. This is to correct the non-deterministic
behaviour of the ITC interrupt (there's a delay between the match
and the raising of the interrupt).
o Add 4 debugging sysctls to monitor clock behaviour. Those are
debug.clock_adjust_edges, debug.clock_adjust_excess,
debug.clock_adjust_lost and debug.clock_adjust_ticks. The first
counts the individual adjustment cycles (when the skew first
crosses the threshold), the second counts the number of times the
adjustment was excessive (any non-zero value is to be considered
a bug), the third counts lost clock interrupts and the last counts
the number of interrupts for which we applied an adjustment
(debug.clock_adjust_ticks / debug.clock_adjust_edges gives the
avarage duration of an individual adjustment -- should be ~2).
While here, remove some nearby (trivial) left-overs from alpha and
other cleanups.
Revision Changes Path
1.22 +73 -255 src/sys/ia64/ia64/clock.c
1.38 +74 -45 src/sys/ia64/ia64/interrupt.c
1.146 +6 -20 src/sys/ia64/ia64/machdep.c
1.49 +4 -3 src/sys/ia64/ia64/mp_machdep.c
1.2 +0 -110 src/sys/ia64/ia64/timerreg.h (dead)
1.9 +6 -8 src/sys/ia64/include/clock.h
1.35 +4 -15 src/sys/ia64/include/cpu.h
1.15 +6 -2 src/sys/ia64/include/pcpu.h
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