- Overhaul the software interrupt code to use interrupt threads for each

  type of software interrupt.  Roughly, what used to be a bit in spending
  now maps to a swi thread.  Each thread can have multiple handlers, just
  like a hardware interrupt thread.
- Instead of using a bitmask of pending interrupts, we schedule the specific
  software interrupt thread to run, so spending, NSWI, and the shandlers
  array are no longer needed.  We can now have an arbitrary number of
  software interrupt threads.  When you register a software interrupt
  thread via sinthand_add(), you get back a struct intrhand that you pass
  to sched_swi() when you wish to schedule your swi thread to run.
- Convert the name of 'struct intrec' to 'struct intrhand' as it is a bit
  more intuitive.  Also, prefix all the members of struct intrhand with
  'ih_'.
- Make swi_net() a MI function since there is now no point in it being
  MD.

Submitted by:	cp

1 files changed, 6 insertions, 3 deletions

diff --git a/sys/kern/subr_taskqueue.c b/sys/kern/subr_taskqueue.c
index 3fa0f05..ba25c7f 100644
--- a/sys/kern/subr_taskqueue.c
+++ b/sys/kern/subr_taskqueue.c
@@ -40,6 +40,8 @@ MALLOC_DEFINE(M_TASKQUEUE, "taskqueue", "Task Queues");
 
 static STAILQ_HEAD(taskqueue_list, taskqueue) taskqueue_queues;
 
+static struct intrhand *taskqueue_ih;
+
 struct taskqueue {
 	STAILQ_ENTRY(taskqueue)	tq_link;
 	STAILQ_HEAD(, task)	tq_queue;
@@ -191,14 +193,15 @@ taskqueue_run(struct taskqueue *queue)
 static void
 taskqueue_swi_enqueue(void *context)
 {
-	setsofttq();
+	sched_swi(taskqueue_ih, SWI_NOSWITCH);
 }
 
 static void
-taskqueue_swi_run(void)
+taskqueue_swi_run(void *dummy)
 {
 	taskqueue_run(taskqueue_swi);
 }
 
 TASKQUEUE_DEFINE(swi, taskqueue_swi_enqueue, 0,
-		 register_swi(SWI_TQ, taskqueue_swi_run));
+		 taskqueue_ih = sinthand_add("task queue", NULL,
+		     taskqueue_swi_run, NULL, SWI_TQ, 0));