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| author | attilio <attilio@FreeBSD.org> | 2010-01-15 16:04:30 +0000 |
|---|---|---|
| committer | attilio <attilio@FreeBSD.org> | 2010-01-15 16:04:30 +0000 |
| commit | 1a19fc806c79b22b5f74c37f6686ea202cd20a2f (patch) | |
| tree | 8e172425057929ebbd5b2388a5f0cf7ea738df03 /sys/conf/options.i386 | |
| parent | fdf6718f335578395478ef7ac4837ac7e13700fa (diff) | |
| download | FreeBSD-src-1a19fc806c79b22b5f74c37f6686ea202cd20a2f.zip FreeBSD-src-1a19fc806c79b22b5f74c37f6686ea202cd20a2f.tar.gz | |
Handling all the three clocks (hardclock, softclock, profclock) with the
LAPIC may lead to aliasing for softclock and profclock because frequencies
are sized in order to fit mainly hardclock.
atrtc used to take care of the softclock and profclock and it does still
do, if the LAPIC can't handle the clocks properly.
Revert the change when the LAPIC started taking charge of all three of
them and let atrtc handle softclock and profclock if not explicitly
requested. Such request can be made setting != 0 the new tunable
machdep.lapic_allclocks or if the new device ATPIC is not present
within the i386 kernel config (atrtc is linked to atpic presence).
Diagnosed by: Sandvine Incorporated
Reviewed by: jhb, emaste
Sponsored by: Sandvine Incorporated
MFC: 3 weeks
Diffstat (limited to 'sys/conf/options.i386')
| -rw-r--r-- | sys/conf/options.i386 | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/sys/conf/options.i386 b/sys/conf/options.i386 index cd2ab98..83f8286 100644 --- a/sys/conf/options.i386 +++ b/sys/conf/options.i386 @@ -105,6 +105,7 @@ NETGRAPH_CRONYX opt_ng_cronyx.h # Device options DEV_APIC opt_apic.h +DEV_ATPIC opt_atpic.h DEV_NPX opt_npx.h ASR_COMPAT opt_asr.h |
