On 28/07/2021 09:58, Chris Johns wrote:
For what do we need lo_data?
This field is used in various places for different type of locks so it needs to
stay.
It seems this is only used to indicate if a lock recursed:
sys/sys/_lock.h: u_int lo_data; /* General class
specific data. */
sys/sys/sx.h:#define sx_recurse lock_object.lo_data
sys/sys/lockmgr.h:#define lk_recurse lock_object.lo_data
sys/sys/mutex.h:#define mtx_recurse lock_object.lo_data
sys/sys/rwlock.h:#define rw_recurse lock_object.lo_data
sys/sys/lockmgr.h:#define lk_recurse lock_object.lo_data
sys/ufs/ffs/ffs_vnops.c: if (result == 0 &&
vp->v_vnlock->lk_recurse == 0) {
sys/ufs/ffs/ffs_vnops.c: if (result == 0 &&
vp->v_vnlock->lk_recurse == 0) {
sys/ufs/ffs/ffs_vnops.c: vp->v_vnlock->lk_recurse == 0)
sys/ufs/ffs/ffs_snapshot.c: for (i = 0; i <
sn->sn_lock.lk_recurse; i++)
sys/ufs/ffs/ffs_snapshot.c: while (sn->sn_lock.lk_recurse > 0)
sys/kern/kern_lock.c: LOCK_LOG_LOCK("XLOCK", &lk->lock_object, 0,
lk->lk_recurse, file, line);
sys/kern/kern_lock.c: LOCK_LOG_LOCK("XUNLOCK", &lk->lock_object, 0,
lk->lk_recurse, file,
sys/kern/kern_lock.c: lk->lk_recurse = 0;
sys/kern/kern_lock.c: KASSERT(lk->lk_recurse == 0, ("lockmgr still
recursed"));
sys/kern/kern_lock.c: lk->lk_recurse++;
sys/kern/kern_lock.c: lk->lk_recurse, file, line);
sys/kern/kern_lock.c: lk->lk_recurse--;
sys/kern/kern_lock.c: if (lk->lk_recurse == 0)
sys/kern/kern_lock.c: lk->lk_recurse, file, line);
sys/kern/kern_lock.c: db_printf(" recursed: %d\n",
lk->lk_recurse);
sys/fs/unionfs/union_subr.c: lockrec = lvp->v_vnlock->lk_recurse;
sys/fs/nfsclient/nfs_clvnops.c: if (onfault && vp->v_vnlock->lk_recurse
== 0) {
sys/fs/nfsclient/nfs_clvnops.c: (lktype == LK_SHARED &&
vp->v_vnlock->lk_recurse > 0)) {
Maybe just
#define lo_data lo_mtx.nest_level
--
embedded brains GmbH
Herr Sebastian HUBER
Dornierstr. 4
82178 Puchheim
Germany
email: sebastian.hu...@embedded-brains.de
phone: +49-89-18 94 741 - 16
fax: +49-89-18 94 741 - 08
Registergericht: Amtsgericht München
Registernummer: HRB 157899
Vertretungsberechtigte Geschäftsführer: Peter Rasmussen, Thomas Dörfler
Unsere Datenschutzerklärung finden Sie hier:
https://embedded-brains.de/datenschutzerklaerung/
_______________________________________________
devel mailing list
devel@rtems.org
http://lists.rtems.org/mailman/listinfo/devel
