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-rw-r--r--drivers/s390/cio/blacklist.c2
-rw-r--r--drivers/s390/cio/css.c13
-rw-r--r--drivers/s390/cio/css.h1
3 files changed, 9 insertions, 7 deletions
diff --git a/drivers/s390/cio/blacklist.c b/drivers/s390/cio/blacklist.c
index a9fe3de2dec1..77ee4daec206 100644
--- a/drivers/s390/cio/blacklist.c
+++ b/drivers/s390/cio/blacklist.c
@@ -269,7 +269,7 @@ static int blacklist_parse_proc_parameters(char *buf)
else
return -EINVAL;
- css_schedule_reprobe();
+ css_schedule_eval_all_unreg(0);
return rc;
}
diff --git a/drivers/s390/cio/css.c b/drivers/s390/cio/css.c
index c1f9cc728c2d..604333ebf01e 100644
--- a/drivers/s390/cio/css.c
+++ b/drivers/s390/cio/css.c
@@ -575,7 +575,7 @@ static void css_slow_path_func(struct work_struct *unused)
spin_unlock_irqrestore(&slow_subchannel_lock, flags);
}
-static DECLARE_WORK(slow_path_work, css_slow_path_func);
+static DECLARE_DELAYED_WORK(slow_path_work, css_slow_path_func);
struct workqueue_struct *cio_work_q;
void css_schedule_eval(struct subchannel_id schid)
@@ -585,7 +585,7 @@ void css_schedule_eval(struct subchannel_id schid)
spin_lock_irqsave(&slow_subchannel_lock, flags);
idset_sch_add(slow_subchannel_set, schid);
atomic_set(&css_eval_scheduled, 1);
- queue_work(cio_work_q, &slow_path_work);
+ queue_delayed_work(cio_work_q, &slow_path_work, 0);
spin_unlock_irqrestore(&slow_subchannel_lock, flags);
}
@@ -596,7 +596,7 @@ void css_schedule_eval_all(void)
spin_lock_irqsave(&slow_subchannel_lock, flags);
idset_fill(slow_subchannel_set);
atomic_set(&css_eval_scheduled, 1);
- queue_work(cio_work_q, &slow_path_work);
+ queue_delayed_work(cio_work_q, &slow_path_work, 0);
spin_unlock_irqrestore(&slow_subchannel_lock, flags);
}
@@ -609,7 +609,7 @@ static int __unset_registered(struct device *dev, void *data)
return 0;
}
-static void css_schedule_eval_all_unreg(void)
+void css_schedule_eval_all_unreg(unsigned long delay)
{
unsigned long flags;
struct idset *unreg_set;
@@ -627,7 +627,7 @@ static void css_schedule_eval_all_unreg(void)
spin_lock_irqsave(&slow_subchannel_lock, flags);
idset_add_set(slow_subchannel_set, unreg_set);
atomic_set(&css_eval_scheduled, 1);
- queue_work(cio_work_q, &slow_path_work);
+ queue_delayed_work(cio_work_q, &slow_path_work, delay);
spin_unlock_irqrestore(&slow_subchannel_lock, flags);
idset_free(unreg_set);
}
@@ -640,7 +640,8 @@ void css_wait_for_slow_path(void)
/* Schedule reprobing of all unregistered subchannels. */
void css_schedule_reprobe(void)
{
- css_schedule_eval_all_unreg();
+ /* Schedule with a delay to allow merging of subsequent calls. */
+ css_schedule_eval_all_unreg(1 * HZ);
}
EXPORT_SYMBOL_GPL(css_schedule_reprobe);
diff --git a/drivers/s390/cio/css.h b/drivers/s390/cio/css.h
index 29351321bad6..2c9107e20251 100644
--- a/drivers/s390/cio/css.h
+++ b/drivers/s390/cio/css.h
@@ -133,6 +133,7 @@ extern struct channel_subsystem *channel_subsystems[];
/* Helper functions to build lists for the slow path. */
void css_schedule_eval(struct subchannel_id schid);
void css_schedule_eval_all(void);
+void css_schedule_eval_all_unreg(unsigned long delay);
int css_complete_work(void);
int sch_is_pseudo_sch(struct subchannel *);