[PATCH] cobalt/select: replace APC with irq_work

[hongzha1 via Xenomai]

schedule irq_work to execute xnselector_destroy_loop instead of
calling __xenapc_schedule, which is to replace APC

---
this patch is for wip/dovetail branch

Signed-off-by: hongzha1 <hongzhan.c...@intel.com>

diff --git a/kernel/cobalt/select.c b/kernel/cobalt/select.c
index c3a3d34b7..c1eee722d 100644
--- a/kernel/cobalt/select.c
+++ b/kernel/cobalt/select.c
@@ -23,7 +23,38 @@
 #include <cobalt/kernel/sched.h>
 #include <cobalt/kernel/synch.h>
 #include <cobalt/kernel/select.h>
-#include <cobalt/kernel/apc.h>
+#include <linux/irq_work.h>
+
+static bool cobalt_select_isinit;
+
+typedef void (*cobalt_select_destroy_t)(void *cookie);
+
+struct cobalt_select_work {
+       cobalt_select_destroy_t handler;
+       void *arg;
+       struct irq_work irq_work;
+};
+
+typedef struct cobalt_select_work cobalt_select_work_t;
+
+cobalt_select_work_t xndeletion_work;
+
+static void cobalt_select_execute(struct irq_work *work)
+{
+       cobalt_select_work_t *xnselect =
+               container_of(work, cobalt_select_work_t, irq_work);
+       xnselect->handler(xnselect->arg);
+}
+
+int cobalt_select_init(cobalt_select_work_t *xnselect,
+               cobalt_select_destroy_t handler, void *arg)
+{
+       xnselect->handler = handler;
+       xnselect->arg = arg;
+       init_irq_work(&xnselect->irq_work, cobalt_select_execute);
+       return 0;
+}
+
 
 /**
  * @ingroup cobalt_core
@@ -399,8 +430,8 @@ void xnselector_destroy(struct xnselector *selector)
 
        xnlock_get_irqsave(&nklock, s);
        list_add_tail(&selector->destroy_link, &selector_list);
-#warning TODO: irq_work
-       //__xnapc_schedule(deletion_apc);
+       if (cobalt_select_isinit == true)
+               irq_work_queue(&xndeletion_work.irq_work);
        xnlock_put_irqrestore(&nklock, s);
 }
 EXPORT_SYMBOL_GPL(xnselector_destroy);
@@ -444,18 +475,20 @@ out:
 
 int xnselect_mount(void)
 {
-#warning TODO: use irq_work
-       /*deletion_apc = xnapc_alloc("selector_list_destroy",
-                                  xnselector_destroy_loop, NULL);
-       if (deletion_apc < 0)
-               return deletion_apc;*/
+       int ret;
 
-       return 0;
+       cobalt_select_isinit = false;
+
+       ret = cobalt_select_init(&xndeletion_work, xnselector_destroy_loop, 
NULL);
+       if (!ret)
+               cobalt_select_isinit = true;
+       return ret;
 }
 
 int xnselect_umount(void)
 {
-       //xnapc_free(deletion_apc);
+       cobalt_select_isinit = false;
+
        return 0;
 }
 
-- 
2.17.1