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Subject[RFC v1 2/3] async: move synchronous caller into a helper
Date
From: "Luis R. Rodriguez" <mcgrof@suse.com>

This will be reused later.

Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Tejun Heo <tj@kernel.org>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Luis R. Rodriguez <mcgrof@suse.com>
---
kernel/async.c | 22 +++++++++++++++-------
1 file changed, 15 insertions(+), 7 deletions(-)

diff --git a/kernel/async.c b/kernel/async.c
index 61f023c..362b3d6 100644
--- a/kernel/async.c
+++ b/kernel/async.c
@@ -145,6 +145,20 @@ static void async_run_entry_fn(struct work_struct *work)
wake_up(&async_done);
}

+/* run synchronously when low on memory or when an invalid domain was used */
+static async_cookie_t __async_schedule_sync(async_func_t func, void *data)
+{
+ unsigned long flags;
+ async_cookie_t newcookie;
+
+ spin_lock_irqsave(&async_lock, flags);
+ newcookie = next_cookie++;
+ spin_unlock_irqrestore(&async_lock, flags);
+
+ func(data, newcookie);
+ return newcookie;
+}
+
static async_cookie_t __async_schedule(async_func_t func, void *data, struct async_domain *domain)
{
struct async_entry *entry;
@@ -160,13 +174,7 @@ static async_cookie_t __async_schedule(async_func_t func, void *data, struct asy
*/
if (!entry || atomic_read(&entry_count) > MAX_WORK) {
kfree(entry);
- spin_lock_irqsave(&async_lock, flags);
- newcookie = next_cookie++;
- spin_unlock_irqrestore(&async_lock, flags);
-
- /* low on memory.. run synchronously */
- func(data, newcookie);
- return newcookie;
+ return __async_schedule_sync(func, data);
}
INIT_LIST_HEAD(&entry->domain_list);
INIT_LIST_HEAD(&entry->global_list);
--
2.0.3


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