diff options
| author | jasone <jasone@FreeBSD.org> | 2000-09-07 01:33:02 +0000 |
|---|---|---|
| committer | jasone <jasone@FreeBSD.org> | 2000-09-07 01:33:02 +0000 |
| commit | 769e0f974d8929599ba599ac496510fffc90ff34 (patch) | |
| tree | 9387522900085835de81e7830e570ef3f6b3ea80 /sys/kern/kern_tc.c | |
| parent | acf1927de02afda4855ec278b1128fd9446405ea (diff) | |
| download | FreeBSD-src-769e0f974d8929599ba599ac496510fffc90ff34.zip FreeBSD-src-769e0f974d8929599ba599ac496510fffc90ff34.tar.gz | |
Major update to the way synchronization is done in the kernel. Highlights
include:
* Mutual exclusion is used instead of spl*(). See mutex(9). (Note: The
alpha port is still in transition and currently uses both.)
* Per-CPU idle processes.
* Interrupts are run in their own separate kernel threads and can be
preempted (i386 only).
Partially contributed by: BSDi (BSD/OS)
Submissions by (at least): cp, dfr, dillon, grog, jake, jhb, sheldonh
Diffstat (limited to 'sys/kern/kern_tc.c')
| -rw-r--r-- | sys/kern/kern_tc.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/sys/kern/kern_tc.c b/sys/kern/kern_tc.c index b8d5833..1128c2e 100644 --- a/sys/kern/kern_tc.c +++ b/sys/kern/kern_tc.c @@ -24,7 +24,7 @@ * Number of timecounters used to implement stable storage */ #ifndef NTIMECOUNTER -#define NTIMECOUNTER 5 +#define NTIMECOUNTER 45 #endif static MALLOC_DEFINE(M_TIMECOUNTER, "timecounter", @@ -148,6 +148,13 @@ nanotime(struct timespec *ts) nnanotime++; tc = timecounter; +#ifdef KTR + if (tc == NULL) { /* called before initialization */ + ts->tv_sec = 0; + ts->tv_nsec = 0; + return; + } +#endif ts->tv_sec = tc->tc_offset_sec; count = tco_delta(tc); delta = tc->tc_offset_nano; |
