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Add knowledge of the netgraph spinlocks into the Witness code.

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Well, at least I think that's how it's done.
This commit is contained in:
Julian Elischer 2001-02-24 14:29:47 +00:00
parent 87b0b1f0b8
commit 33338e7370
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=72979
4 changed files with 18 additions and 5 deletions
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2
sys/kern/kern_mutex.c
View File

@ -947,6 +947,8 @@ static char *spin_order_list[] = {
"ap boot",
"imen",
#endif
"ng_node",
"ng_worklist",
"smp rendezvous",
#endif
NULL

2
sys/kern/subr_turnstile.c
View File

@ -947,6 +947,8 @@ static char *spin_order_list[] = {
"ap boot",
"imen",
#endif
"ng_node",
"ng_worklist",
"smp rendezvous",
#endif
NULL

2
sys/kern/subr_witness.c
View File

@ -947,6 +947,8 @@ static char *spin_order_list[] = {
"ap boot",
"imen",
#endif
"ng_node",
"ng_worklist",
"smp rendezvous",
#endif
NULL

17
sys/netgraph/ng_base.c
View File

@ -616,7 +616,7 @@ ng_make_node_common(struct ng_type *type, node_p *nodepp)
NG_NODE_REF(node); /* note reference */
type->refs++;
mtx_init(&node->nd_input_queue.q_mtx, "netgraph node mutex", MTX_SPIN);
mtx_init(&node->nd_input_queue.q_mtx, "ng_node", MTX_SPIN);
node->nd_input_queue.queue = NULL;
node->nd_input_queue.last = &node->nd_input_queue.queue;
node->nd_input_queue.q_flags = 0;
@ -2923,7 +2923,7 @@ ngb_mod_event(module_t mod, int event, void *data)
switch (event) {
case MOD_LOAD:
/* Register line discipline */
mtx_init(&ng_worklist_mtx, "netgraph worklist mutex", MTX_SPIN);
mtx_init(&ng_worklist_mtx, "ng_worklist", MTX_SPIN);
mtx_init(&ng_typelist_mtx, "netgraph types mutex", 0);
mtx_init(&ng_nodelist_mtx, "netgraph nodelist mutex", 0);
mtx_init(&ng_idhash_mtx, "netgraph idhash mutex", 0);
@ -3284,13 +3284,20 @@ ng_worklist_remove(node_p node)
{
mtx_lock_spin(&ng_worklist_mtx);
if (node->nd_flags & NG_WORKQ) {
node->nd_flags &= ~NG_WORKQ;
TAILQ_REMOVE(&ng_worklist, node, nd_work);
mtx_unlock_spin(&ng_worklist_mtx);
NG_NODE_UNREF(node);
} else {
mtx_unlock_spin(&ng_worklist_mtx);
}
node->nd_flags &= ~NG_WORKQ;
mtx_unlock_spin(&ng_worklist_mtx);
}
/*
* XXX
* It's posible that a debugging NG_NODE_REF may need
* to be outside the mutex zone
*/
static void
ng_setisr(node_p node)
{
@ -3302,7 +3309,7 @@ ng_setisr(node_p node)
*/
node->nd_flags |= NG_WORKQ;
TAILQ_INSERT_TAIL(&ng_worklist, node, nd_work);
NG_NODE_REF(node);
NG_NODE_REF(node); /* XXX fafe in mutex? */
}
mtx_unlock_spin(&ng_worklist_mtx);
schednetisr(NETISR_NETGRAPH);