diff options
| author | Linus Torvalds <torvalds@athlon.transmeta.com> | 2002-02-04 18:14:02 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@athlon.transmeta.com> | 2002-02-04 18:14:02 -0800 |
| commit | 236e6127ad942fa9712f83a2d441e0ba7c3fc190 (patch) | |
| tree | c57f86b605bcd3b1c08d28a8de945cca83e4152b /kernel/fork.c | |
| parent | 7216d3e927c3b6c5d28e5ffaa54afbb34649debb (diff) | |
v2.4.4 -> v2.4.4.1
- Al Viro: clean up driver "invalidate_device()" mess
- Andries Brouwer: make sd.c work with USB Dane-Elec CompactFlash Card
Reader
- me: fix nasty lazy kernel page table update problem
- me: undo fork changes. Too many user-level bugs and unresolved issues.
- Peter Anvin: iso9660 cleanups
- Alan Cox: big merge
- Johannes Erdfelt: UHCI pci DMA setup fix
Diffstat (limited to 'kernel/fork.c')
| -rw-r--r-- | kernel/fork.c | 18 |
1 files changed, 8 insertions, 10 deletions
diff --git a/kernel/fork.c b/kernel/fork.c index 74b3ee7ca8cd..feed49eb35bc 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -666,17 +666,15 @@ int do_fork(unsigned long clone_flags, unsigned long stack_start, p->pdeath_signal = 0; /* - * Give the parent's dynamic priority entirely to the child. The - * total amount of dynamic priorities in the system doesn't change - * (more scheduling fairness), but the child will run first, which - * is especially useful in avoiding a lot of copy-on-write faults - * if the child for a fork() just wants to do a few simple things - * and then exec(). This is only important in the first timeslice. - * In the long run, the scheduling behavior is unchanged. + * "share" dynamic priority between parent and child, thus the + * total amount of dynamic priorities in the system doesnt change, + * more scheduling fairness. This is only important in the first + * timeslice, on the long run the scheduling behaviour is unchanged. */ - p->counter = current->counter; - current->counter = 0; - current->need_resched = 1; + p->counter = (current->counter + 1) >> 1; + current->counter >>= 1; + if (!current->counter) + current->need_resched = 1; /* * Ok, add it to the run-queues and make it |