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| author | jeff <jeff@FreeBSD.org> | 2007-06-05 00:00:57 +0000 |
|---|---|---|
| committer | jeff <jeff@FreeBSD.org> | 2007-06-05 00:00:57 +0000 |
| commit | 91d150179059555ef497f4b5b5a560fdb24e472f (patch) | |
| tree | 6727b982fa0d93b8aafab313bdc797aee9e314d2 /sys/vm/vm_meter.c | |
| parent | 8297f778b9d0a595a99ca58d332ab4111b636019 (diff) | |
| download | FreeBSD-src-91d150179059555ef497f4b5b5a560fdb24e472f.zip FreeBSD-src-91d150179059555ef497f4b5b5a560fdb24e472f.tar.gz | |
Commit 14/14 of sched_lock decomposition.
- Use thread_lock() rather than sched_lock for per-thread scheduling
sychronization.
- Use the per-process spinlock rather than the sched_lock for per-process
scheduling synchronization.
Tested by: kris, current@
Tested on: i386, amd64, ULE, 4BSD, libthr, libkse, PREEMPTION, etc.
Discussed with: kris, attilio, kmacy, jhb, julian, bde (small parts each)
Diffstat (limited to 'sys/vm/vm_meter.c')
| -rw-r--r-- | sys/vm/vm_meter.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/sys/vm/vm_meter.c b/sys/vm/vm_meter.c index d4b51e7..4d70155 100644 --- a/sys/vm/vm_meter.c +++ b/sys/vm/vm_meter.c @@ -131,17 +131,21 @@ vmtotal(SYSCTL_HANDLER_ARGS) FOREACH_PROC_IN_SYSTEM(p) { if (p->p_flag & P_SYSTEM) continue; - mtx_lock_spin(&sched_lock); + PROC_SLOCK(p); switch (p->p_state) { case PRS_NEW: - mtx_unlock_spin(&sched_lock); + PROC_SUNLOCK(p); continue; break; default: FOREACH_THREAD_IN_PROC(p, td) { /* Need new statistics XXX */ + thread_lock(td); switch (td->td_state) { case TDS_INHIBITED: + /* + * XXX stats no longer synchronized. + */ if (TD_ON_LOCK(td) || (td->td_inhibitors == TDI_SWAPPED)) { @@ -162,13 +166,15 @@ vmtotal(SYSCTL_HANDLER_ARGS) case TDS_RUNQ: case TDS_RUNNING: total.t_rq++; + thread_unlock(td); continue; default: break; } + thread_unlock(td); } } - mtx_unlock_spin(&sched_lock); + PROC_SUNLOCK(p); /* * Note active objects. */ |
