- Move rusage from being per-process in struct pstats to per-thread in

   td_ru.  This removes the requirement for per-process synchronization in
   statclock() and mi_switch().  This was previously supported by
   sched_lock which is going away.  All modifications to rusage are now
   done in the context of the owning thread.  reads proceed without locks.
 - Aggregate exiting threads rusage in thread_exit() such that the exiting
   thread's rusage is not lost.
 - Provide a new routine, rufetch() to fetch an aggregate of all rusage
   structures from all threads in a process.  This routine must be used
   in any place requiring a rusage from a process prior to it's exit.  The
   exited process's rusage is still available via p_ru.
 - Aggregate tick statistics only on demand via rufetch() or when a thread
   exits.  Tick statistics are kept in the thread and protected by sched_lock
   until it exits.

Initial patch by:	attilio
Reviewed by:		attilio, bde (some objections), arch (mostly silent)

1 files changed, 1 insertions, 1 deletions

diff --git a/sys/ufs/ffs/ffs_inode.c b/sys/ufs/ffs/ffs_inode.c
index ad6bff9..dc4f339 100644
--- a/sys/ufs/ffs/ffs_inode.c
+++ b/sys/ufs/ffs/ffs_inode.c
@@ -559,7 +559,7 @@ ffs_indirtrunc(ip, lbn, dbn, lastbn, level, countp)
 	vp = ITOV(ip);
 	bp = getblk(vp, lbn, (int)fs->fs_bsize, 0, 0, 0);
 	if ((bp->b_flags & B_CACHE) == 0) {
-		curproc->p_stats->p_ru.ru_inblock++;	/* pay for read */
+		curthread->td_ru.ru_inblock++;	/* pay for read */
 		bp->b_iocmd = BIO_READ;
 		bp->b_flags &= ~B_INVAL;
 		bp->b_ioflags &= ~BIO_ERROR;