cvs commit: src/sys/geom/gate g_gate.c g_gate.h
Pawel Jakub Dawidek
pjd at FreeBSD.org
Wed Feb 9 08:29:40 GMT 2005
pjd 2005-02-09 08:29:39 UTC
FreeBSD src repository
sys/geom/gate g_gate.c g_gate.h
- Remove g_gate_hold()/g_gate_release() from start/done paths. It saves
4 mutex operations per I/O requests.
- Use only one mutex to protect both (incoming and outgoing) queue.
As MUTEX_PROFILING(9) shows, there is no big contention for this lock.
- Protect sc_queue_count with queue mutex, instead of doing atomic
operations on it.
- Remove DROP_GIANT()/PICKUP_GIANT() - ggate is marked as MPSAFE and no
Revision Changes Path
1.15 +36 -54 src/sys/geom/gate/g_gate.c
1.4 +4 -5 src/sys/geom/gate/g_gate.h
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