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| author | mav <mav@FreeBSD.org> | 2010-09-14 08:48:06 +0000 |
|---|---|---|
| committer | mav <mav@FreeBSD.org> | 2010-09-14 08:48:06 +0000 |
| commit | 6c05aa4db6d1ea20da8eca83a1214b74821b32d8 (patch) | |
| tree | ad6e771c5b5091a633bf1f813ca1f742162ecb96 /sys/kern/kern_timeout.c | |
| parent | 5864d6e457c81a0a80b2ab3b57ee852e6f62efcb (diff) | |
| download | FreeBSD-src-6c05aa4db6d1ea20da8eca83a1214b74821b32d8.zip FreeBSD-src-6c05aa4db6d1ea20da8eca83a1214b74821b32d8.tar.gz | |
Make kern_tc.c provide minimum frequency of tc_ticktock() calls, required
to handle current timecounter wraps. Make kern_clocksource.c to honor that
requirement, scheduling sleeps on first CPU for no more then specified
period. Allow other CPUs to sleep up to 1/4 second (for any case).
Diffstat (limited to 'sys/kern/kern_timeout.c')
| -rw-r--r-- | sys/kern/kern_timeout.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/sys/kern/kern_timeout.c b/sys/kern/kern_timeout.c index 5697792..89fe544 100644 --- a/sys/kern/kern_timeout.c +++ b/sys/kern/kern_timeout.c @@ -280,7 +280,7 @@ callout_tick(void) } int -callout_tickstofirst(void) +callout_tickstofirst(int limit) { struct callout_cpu *cc; struct callout *c; @@ -291,7 +291,7 @@ callout_tickstofirst(void) cc = CC_SELF(); mtx_lock_spin_flags(&cc->cc_lock, MTX_QUIET); curticks = cc->cc_ticks; - while( skip < ncallout && skip < hz/8 ) { + while( skip < ncallout && skip < limit ) { sc = &cc->cc_callwheel[ (curticks+skip) & callwheelmask ]; /* search scanning ticks */ TAILQ_FOREACH( c, sc, c_links.tqe ){ |
