diff options
| author | mav <mav@FreeBSD.org> | 2009-05-03 17:47:21 +0000 |
|---|---|---|
| committer | mav <mav@FreeBSD.org> | 2009-05-03 17:47:21 +0000 |
| commit | 98565a1214eb4106f0a1b76ff6696b9980497195 (patch) | |
| tree | ce5adc34e083eefdd76b28a61134b800569d7b6e /sys/i386/bios/apm.c | |
| parent | 77cd1e9862e8b7f432feb7272c92e04d5b0f47fd (diff) | |
| download | FreeBSD-src-98565a1214eb4106f0a1b76ff6696b9980497195.zip FreeBSD-src-98565a1214eb4106f0a1b76ff6696b9980497195.tar.gz | |
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.
Diffstat (limited to 'sys/i386/bios/apm.c')
| -rw-r--r-- | sys/i386/bios/apm.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/sys/i386/bios/apm.c b/sys/i386/bios/apm.c index 2ac82c5..0d8532f 100644 --- a/sys/i386/bios/apm.c +++ b/sys/i386/bios/apm.c @@ -59,6 +59,7 @@ __FBSDID("$FreeBSD$"); #include <vm/vm_param.h> #include <i386/bios/apm.h> +#include <isa/rtc.h> /* Used by the apm_saver screen saver module */ int apm_display(int newstate); @@ -1155,7 +1156,7 @@ apm_attach(device_t dev) cv_init(&sc->cv, "cbb cv"); if (device_get_flags(dev) & 0x20) - statclock_disable = 1; + atrtcclock_disable = 1; sc->initialized = 0; |
