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| author | mav <mav@FreeBSD.org> | 2010-09-22 05:32:37 +0000 |
|---|---|---|
| committer | mav <mav@FreeBSD.org> | 2010-09-22 05:32:37 +0000 |
| commit | 351da3e73cc97345b431bd52a65d6bc21844734b (patch) | |
| tree | 53f7bdf33b17f42560109ceaa45bb3afea7c2425 /sys/kern/kern_clocksource.c | |
| parent | b91310c2821891333dc49aecc345f9f1be3815b2 (diff) | |
| download | FreeBSD-src-351da3e73cc97345b431bd52a65d6bc21844734b.zip FreeBSD-src-351da3e73cc97345b431bd52a65d6bc21844734b.tar.gz | |
If kernel built with DEVICE_POLLING, keep one CPU always in active state
to handle it.
Diffstat (limited to 'sys/kern/kern_clocksource.c')
| -rw-r--r-- | sys/kern/kern_clocksource.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/sys/kern/kern_clocksource.c b/sys/kern/kern_clocksource.c index e9a7c9d..e654659 100644 --- a/sys/kern/kern_clocksource.c +++ b/sys/kern/kern_clocksource.c @@ -34,6 +34,7 @@ __FBSDID("$FreeBSD$"); /* XEN has own timer routines now. */ #ifndef XEN +#include "opt_device_polling.h" #include "opt_kdtrace.h" #include <sys/param.h> @@ -721,7 +722,11 @@ cpu_idleclock(void) struct pcpu_state *state; if (idletick || busy || - (periodic && (timer->et_flags & ET_FLAGS_PERCPU))) + (periodic && (timer->et_flags & ET_FLAGS_PERCPU)) +#ifdef DEVICE_POLLING + || curcpu == CPU_FIRST() +#endif + ) return; state = DPCPU_PTR(timerstate); if (periodic) |
