x86/smpboot: Init apic mapping before usage

[cascardo/linux.git] / kernel / relay.c

diff --git a/kernel/relay.c b/kernel/relay.c
index 9988f5c..da79a10 100644 (file)
--- a/kernel/relay.c
+++ b/kernel/relay.c
@@ -328,13 +328,15 @@ static struct rchan_callbacks default_channel_callbacks = {
 
 /**
  *     wakeup_readers - wake up readers waiting on a channel
- *     @data: contains the channel buffer
+ *     @work: contains the channel buffer
  *
- *     This is the timer function used to defer reader waking.
+ *     This is the function used to defer reader waking
  */
-static void wakeup_readers(unsigned long data)
+static void wakeup_readers(struct irq_work *work)
 {
-       struct rchan_buf *buf = (struct rchan_buf *)data;
+       struct rchan_buf *buf;
+
+       buf = container_of(work, struct rchan_buf, wakeup_work);
        wake_up_interruptible(&buf->read_wait);
 }
 
@@ -352,9 +354,10 @@ static void __relay_reset(struct rchan_buf *buf, unsigned int init)
        if (init) {
                init_waitqueue_head(&buf->read_wait);
                kref_init(&buf->kref);
-               setup_timer(&buf->timer, wakeup_readers, (unsigned long)buf);
-       } else
-               del_timer_sync(&buf->timer);
+               init_irq_work(&buf->wakeup_work, wakeup_readers);
+       } else {
+               irq_work_sync(&buf->wakeup_work);
+       }
 
        buf->subbufs_produced = 0;
        buf->subbufs_consumed = 0;
@@ -487,7 +490,7 @@ free_buf:
 static void relay_close_buf(struct rchan_buf *buf)
 {
        buf->finalized = 1;
-       del_timer_sync(&buf->timer);
+       irq_work_sync(&buf->wakeup_work);
        buf->chan->cb->remove_buf_file(buf->dentry);
        kref_put(&buf->kref, relay_remove_buf);
 }
@@ -754,14 +757,15 @@ size_t relay_switch_subbuf(struct rchan_buf *buf, size_t length)
                        buf->early_bytes += buf->chan->subbuf_size -
                                            buf->padding[old_subbuf];
                smp_mb();
-               if (waitqueue_active(&buf->read_wait))
+               if (waitqueue_active(&buf->read_wait)) {
                        /*
                         * Calling wake_up_interruptible() from here
                         * will deadlock if we happen to be logging
                         * from the scheduler (trying to re-grab
                         * rq->lock), so defer it.
                         */
-                       mod_timer(&buf->timer, jiffies + 1);
+                       irq_work_queue(&buf->wakeup_work);
+               }
        }
 
        old = buf->data;