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Subject[PATCH R2 4/7] xen/balloon: migration from mod_timer() to schedule_delayed_work()
migration from mod_timer() to schedule_delayed_work().

Signed-off-by: Daniel Kiper <dkiper@net-space.pl>
---
drivers/xen/balloon.c | 16 +++-------------
1 files changed, 3 insertions(+), 13 deletions(-)
diff --git a/drivers/xen/balloon.c b/drivers/xen/balloon.c
index 878f54c..11143af 100644
--- a/drivers/xen/balloon.c
+++ b/drivers/xen/balloon.c
@@ -98,8 +98,7 @@ static LIST_HEAD(ballooned_pages);

/* Main work function, always executed in process context. */
static void balloon_process(struct work_struct *work);
-static DECLARE_WORK(balloon_worker, balloon_process);
-static struct timer_list balloon_timer;
+static DECLARE_DELAYED_WORK(balloon_worker, balloon_process);

/* When ballooning out (allocating memory to return to Xen) we don't really
want the kernel to try too hard since that can trigger the oom killer. */
@@ -167,11 +166,6 @@ static struct page *balloon_next_page(struct page *page)
return list_entry(next, struct page, lru);
}

-static void balloon_alarm(unsigned long unused)
-{
- schedule_work(&balloon_worker);
-}
-
static unsigned long current_target(void)
{
unsigned long target = balloon_stats.target_pages;
@@ -336,7 +330,7 @@ static void balloon_process(struct work_struct *work)

/* Schedule more work if there is some still to be done. */
if (current_target() != balloon_stats.current_pages)
- mod_timer(&balloon_timer, jiffies + HZ);
+ schedule_delayed_work(&balloon_worker, HZ);

mutex_unlock(&balloon_mutex);
}
@@ -346,7 +340,7 @@ static void balloon_set_new_target(unsigned long target)
{
/* No need for lock. Not read-modify-write updates. */
balloon_stats.target_pages = target;
- schedule_work(&balloon_worker);
+ schedule_delayed_work(&balloon_worker, 0);
}

static struct xenbus_watch target_watch =
@@ -405,10 +399,6 @@ static int __init balloon_init(void)
balloon_stats.balloon_low = 0;
balloon_stats.balloon_high = 0;

- init_timer(&balloon_timer);
- balloon_timer.data = 0;
- balloon_timer.function = balloon_alarm;
-
register_balloon(&balloon_sysdev);

/* Initialise the balloon with excess memory space. */
--
1.4.4.4


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