diff options
| author | jeff <jeff@FreeBSD.org> | 2003-06-17 10:21:34 +0000 |
|---|---|---|
| committer | jeff <jeff@FreeBSD.org> | 2003-06-17 10:21:34 +0000 |
| commit | 85db173ae676a74b59e9688d9d7d314358d40e01 (patch) | |
| tree | a5a8417b80cf48ef050aa2ca7e54e0e6ac2f4100 /sys/kern/sched_ule.c | |
| parent | 93123acec520f3937741c5e47b67eb0d9028407a (diff) | |
| download | FreeBSD-src-85db173ae676a74b59e9688d9d7d314358d40e01.zip FreeBSD-src-85db173ae676a74b59e9688d9d7d314358d40e01.tar.gz | |
- Temporarily patch a problem where the interact score could be negative
because the run time exceeds the largest value a signed int can hold.
The real solution involves calculating how far we are over the limit.
To quickly solve this problem we loop removing 1/5th of the current value
until it falls below the limit. The common case requires no passes.
Diffstat (limited to 'sys/kern/sched_ule.c')
| -rw-r--r-- | sys/kern/sched_ule.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/sys/kern/sched_ule.c b/sys/kern/sched_ule.c index bd208e4..5cbc991 100644 --- a/sys/kern/sched_ule.c +++ b/sys/kern/sched_ule.c @@ -627,7 +627,8 @@ sched_slice(struct kse *ke) static void sched_interact_update(struct ksegrp *kg) { - if ((kg->kg_runtime + kg->kg_slptime) > SCHED_SLP_RUN_MAX) { + /* XXX Fixme, use a linear algorithm and not a while loop. */ + while ((kg->kg_runtime + kg->kg_slptime) > SCHED_SLP_RUN_MAX) { kg->kg_runtime = (kg->kg_runtime / 5) * 4; kg->kg_slptime = (kg->kg_slptime / 5) * 4; } |
