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| author | davide <davide@FreeBSD.org> | 2013-09-20 23:06:21 +0000 |
|---|---|---|
| committer | davide <davide@FreeBSD.org> | 2013-09-20 23:06:21 +0000 |
| commit | 5273d359fdd82fc7a93ff0f694844d25a2e17c59 (patch) | |
| tree | 0f8acc1728a85e0911253a1fa7cfe9c10d2c05b4 /sys/kern/kern_synch.c | |
| parent | 7ed30adae7eb0c6e156983ca0c96c04e1e6a8e0d (diff) | |
| download | FreeBSD-src-5273d359fdd82fc7a93ff0f694844d25a2e17c59.zip FreeBSD-src-5273d359fdd82fc7a93ff0f694844d25a2e17c59.tar.gz | |
Fix lc_lock/lc_unlock() support for rmlocks held in shared mode. With
current lock classes KPI it was really difficult because there was no
way to pass an rmtracker object to the lock/unlock routines. In order
to accomplish the task, modify the aforementioned functions so that
they can return (or pass as argument) an uinptr_t, which is in the rm
case used to hold a pointer to struct rm_priotracker for current
thread. As an added bonus, this fixes rm_sleep() in the rm shared
case, which right now can communicate priotracker structure between
lc_unlock()/lc_lock().
Suggested by: jhb
Reviewed by: jhb
Approved by: re (delphij)
Diffstat (limited to 'sys/kern/kern_synch.c')
| -rw-r--r-- | sys/kern/kern_synch.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/sys/kern/kern_synch.c b/sys/kern/kern_synch.c index b0e1908..0a400e9 100644 --- a/sys/kern/kern_synch.c +++ b/sys/kern/kern_synch.c @@ -157,7 +157,8 @@ _sleep(void *ident, struct lock_object *lock, int priority, struct thread *td; struct proc *p; struct lock_class *class; - int catch, lock_state, pri, rval, sleepq_flags; + uintptr_t lock_state; + int catch, pri, rval, sleepq_flags; WITNESS_SAVE_DECL(lock_witness); td = curthread; |
