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author | jeff <jeff@FreeBSD.org> | 2008-03-19 06:19:01 +0000 |
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committer | jeff <jeff@FreeBSD.org> | 2008-03-19 06:19:01 +0000 |
commit | 46f09d5bc3f6480ce5db48b9d76f3e83299f588c (patch) | |
tree | 720fece23c8482c35e341e275a0f4068ee43126f /sys/ufs/ffs | |
parent | f8600f40e7fcf241985d8a978c63889de0969bfb (diff) | |
download | FreeBSD-src-46f09d5bc3f6480ce5db48b9d76f3e83299f588c.zip FreeBSD-src-46f09d5bc3f6480ce5db48b9d76f3e83299f588c.tar.gz |
- Relax requirements for p_numthreads, p_threads, p_swtick, and p_nice from
requiring the per-process spinlock to only requiring the process lock.
- Reflect these changes in the proc.h documentation and consumers throughout
the kernel. This is a substantial reduction in locking cost for these
fields and was made possible by recent changes to threading support.
Diffstat (limited to 'sys/ufs/ffs')
-rw-r--r-- | sys/ufs/ffs/ffs_snapshot.c | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/sys/ufs/ffs/ffs_snapshot.c b/sys/ufs/ffs/ffs_snapshot.c index ece2ad7..4e11857 100644 --- a/sys/ufs/ffs/ffs_snapshot.c +++ b/sys/ufs/ffs/ffs_snapshot.c @@ -393,10 +393,8 @@ restart: p = td->td_proc; PROC_LOCK(p); - PROC_SLOCK(p); saved_nice = p->p_nice; sched_nice(p, 0); - PROC_SUNLOCK(p); PROC_UNLOCK(p); } /* @@ -816,9 +814,7 @@ out: p = td->td_proc; PROC_LOCK(p); - PROC_SLOCK(p); sched_nice(td->td_proc, saved_nice); - PROC_SUNLOCK(p); PROC_UNLOCK(td->td_proc); } UFS_LOCK(ump); |