diff options
| author | jeff <jeff@FreeBSD.org> | 2003-11-05 05:30:12 +0000 |
|---|---|---|
| committer | jeff <jeff@FreeBSD.org> | 2003-11-05 05:30:12 +0000 |
| commit | 9f266b0941e7bf6d4bb1085e29c18812a7c34534 (patch) | |
| tree | 6e04897254a32dae5e2b74623c8d64ee1079d867 /sys/kern | |
| parent | 6e26b88350819d423f90d57667f1c148bc042f55 (diff) | |
| download | FreeBSD-src-9f266b0941e7bf6d4bb1085e29c18812a7c34534.zip FreeBSD-src-9f266b0941e7bf6d4bb1085e29c18812a7c34534.tar.gz | |
- It's ok if sched_runnable() has races in it, we don't need the sched_lock
here unless we have something on the assigned queue.
Diffstat (limited to 'sys/kern')
| -rw-r--r-- | sys/kern/sched_ule.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/sys/kern/sched_ule.c b/sys/kern/sched_ule.c index 73ed185..545fa4a 100644 --- a/sys/kern/sched_ule.c +++ b/sys/kern/sched_ule.c @@ -1239,11 +1239,13 @@ sched_runnable(void) load = 1; - mtx_lock_spin(&sched_lock); kseq = KSEQ_SELF(); #ifdef SMP - if (kseq->ksq_assigned) + if (kseq->ksq_assigned) { + mtx_lock_spin(&sched_lock); kseq_assign(kseq); + mtx_unlock_spin(&sched_lock); + } #endif if ((curthread->td_flags & TDF_IDLETD) != 0) { if (kseq->ksq_load > 0) @@ -1253,7 +1255,6 @@ sched_runnable(void) goto out; load = 0; out: - mtx_unlock_spin(&sched_lock); return (load); } |
