linux-kernel - [PATCH 2/2] kernel/async.c: remove async_unregister

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Message-Id: <20210309151723.1907838-2-linux@rasmusvillemoes.dk>
Date:   Tue,  9 Mar 2021 16:17:23 +0100
From:   Rasmus Villemoes <linux@...musvillemoes.dk>
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     Tejun Heo <tj@...nel.org>,
        Rasmus Villemoes <linux@...musvillemoes.dk>,
        linux-kernel@...r.kernel.org
Subject: [PATCH 2/2] kernel/async.c: remove async_unregister_domain()

No callers in the tree.

Signed-off-by: Rasmus Villemoes <linux@...musvillemoes.dk>
---
 include/linux/async.h |  1 -
 kernel/async.c        | 18 ------------------
 2 files changed, 19 deletions(-)

diff --git a/include/linux/async.h b/include/linux/async.h
index 0a17cd27f348..cce4ad31e8fc 100644
--- a/include/linux/async.h
+++ b/include/linux/async.h
@@ -112,7 +112,6 @@ async_schedule_dev_domain(async_func_t func, struct device *dev,
 	return async_schedule_node_domain(func, dev, dev_to_node(dev), domain);
 }
 
-void async_unregister_domain(struct async_domain *domain);
 extern void async_synchronize_full(void);
 extern void async_synchronize_full_domain(struct async_domain *domain);
 extern void async_synchronize_cookie(async_cookie_t cookie);
diff --git a/kernel/async.c b/kernel/async.c
index 4b5971142922..b8d7a663497f 100644
--- a/kernel/async.c
+++ b/kernel/async.c
@@ -245,24 +245,6 @@ void async_synchronize_full(void)
 }
 EXPORT_SYMBOL_GPL(async_synchronize_full);
 
-/**
- * async_unregister_domain - ensure no more anonymous waiters on this domain
- * @domain: idle domain to flush out of any async_synchronize_full instances
- *
- * async_synchronize_{cookie|full}_domain() are not flushed since callers
- * of these routines should know the lifetime of @domain
- *
- * Prefer ASYNC_DOMAIN_EXCLUSIVE() declarations over flushing
- */
-void async_unregister_domain(struct async_domain *domain)
-{
-	spin_lock_irq(&async_lock);
-	WARN_ON(!domain->registered || !list_empty(&domain->pending));
-	domain->registered = 0;
-	spin_unlock_irq(&async_lock);
-}
-EXPORT_SYMBOL_GPL(async_unregister_domain);
-
 /**
  * async_synchronize_full_domain - synchronize all asynchronous function within a certain domain
  * @domain: the domain to synchronize
-- 
2.29.2