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-rw-r--r--kernel/async.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/kernel/async.c b/kernel/async.c
index 6f34904a0b53..6c68fc3fae7b 100644
--- a/kernel/async.c
+++ b/kernel/async.c
@@ -57,6 +57,8 @@ asynchronous and synchronous parts of the kernel.
#include <linux/slab.h>
#include <linux/workqueue.h>
+#include "workqueue_internal.h"
+
static async_cookie_t next_cookie = 1;
#define MAX_WORK 32768
@@ -353,3 +355,15 @@ void async_synchronize_cookie(async_cookie_t cookie)
async_synchronize_cookie_domain(cookie, &async_running);
}
EXPORT_SYMBOL_GPL(async_synchronize_cookie);
+
+/**
+ * current_is_async - is %current an async worker task?
+ *
+ * Returns %true if %current is an async worker task.
+ */
+bool current_is_async(void)
+{
+ struct worker *worker = current_wq_worker();
+
+ return worker && worker->current_func == async_run_entry_fn;
+}