freebsd-skq/sys/amd64
Alexander Motin 1703f2b424 Rename statclock_disable variable to atrtcclock_disable that it actually is,
and hide it inside of atrtc driver. Add new tunable hint.atrtc.0.clock
controlling it. Setting it to 0 disables using RTC clock as stat-/
profclock sources.

Teach i386 and amd64 SMP platforms to emulate stat-/profclocks using i8254
hardclock, when LAPIC and RTC clocks are disabled.

This allows to reduce global interrupt rate of idle system down to about
100 interrupts per core, permitting C3 and deeper C-states provide maximum
CPU power efficiency.
2009-05-03 17:47:21 +00:00
..
acpica Reduce code duplcations from r190620. While I am here, tweak a comment. 2009-04-02 01:46:57 +00:00
amd64 Add support for using i8254 and rtc timers as event sources for amd64 SMP 2009-05-02 12:20:43 +00:00
compile
conf o add uath 2009-05-01 17:20:16 +00:00
ia32 Save and restore segment registers on amd64 when entering and leaving 2009-04-01 13:09:26 +00:00
include Rename statclock_disable variable to atrtcclock_disable that it actually is, 2009-05-03 17:47:21 +00:00
isa Rename statclock_disable variable to atrtcclock_disable that it actually is, 2009-05-03 17:47:21 +00:00
linux32 Move extern variable definitions to the header file. 2009-05-02 10:06:49 +00:00
pci Fall back to using configuration type 1 accesses for PCI config requests if 2009-03-24 18:10:22 +00:00
Makefile Adjustments to make a tags file a bit more suitable to amd64. 2008-12-01 14:15:10 +00:00