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| author | davide <davide@FreeBSD.org> | 2013-02-28 10:46:54 +0000 |
|---|---|---|
| committer | davide <davide@FreeBSD.org> | 2013-02-28 10:46:54 +0000 |
| commit | 2bf12d0c7ceced74a813d6940dd07310a11d6a2a (patch) | |
| tree | 33c7f3089361e0ab5379fdc8445540c6eeb03ed0 /sys/sys/systm.h | |
| parent | f3c985cbe184c9d4c31d0e7140c146768a82833c (diff) | |
| download | FreeBSD-src-2bf12d0c7ceced74a813d6940dd07310a11d6a2a.zip FreeBSD-src-2bf12d0c7ceced74a813d6940dd07310a11d6a2a.tar.gz | |
MFcalloutng:
When CPU becomes idle, cpu_idleclock() calculates time to the next timer
event in order to reprogram hw timer. Return that time in sbintime_t to
the caller and pass it to acpi_cpu_idle(), where it can be used as one
more factor (quite precise) to extimate furter sleep time and choose
optimal sleep state. This is a preparatory change for further callout
improvements will be committed in the next days.
The commmit is not targeted for MFC.
Diffstat (limited to 'sys/sys/systm.h')
| -rw-r--r-- | sys/sys/systm.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/sys/sys/systm.h b/sys/sys/systm.h index 611d014..2bf8056 100644 --- a/sys/sys/systm.h +++ b/sys/sys/systm.h @@ -44,6 +44,7 @@ #include <sys/cdefs.h> #include <sys/queue.h> #include <sys/stdint.h> /* for people using printf mainly */ +#include <sys/time.h> extern int cold; /* nonzero if we are doing a cold boot */ extern int rebooting; /* kern_reboot() has been called. */ @@ -267,7 +268,7 @@ void startprofclock(struct proc *); void stopprofclock(struct proc *); void cpu_startprofclock(void); void cpu_stopprofclock(void); -void cpu_idleclock(void); +sbintime_t cpu_idleclock(void); void cpu_activeclock(void); extern int cpu_can_deep_sleep; extern int cpu_disable_deep_sleep; |
