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From: Yajun Deng <yajun.deng@linux.dev>
To: mingo@redhat.com, peterz@infradead.org, juri.lelli@redhat.com,
	vincent.guittot@linaro.org
Cc: dietmar.eggemann@arm.com, rostedt@goodmis.org,
	bsegall@google.com, mgorman@suse.de, bristot@redhat.com,
	linux-kernel@vger.kernel.org, Yajun Deng <yajun.deng@linux.dev>
Subject: [PATCH] completion: introduce complete_put() helper function
Date: Mon,  6 Dec 2021 12:03:19 +0800	[thread overview]
Message-ID: <20211206040319.7063-1-yajun.deng@linux.dev> (raw)

There are many cases where it is necessary to decrease refcount and test,
then called complete(). So introduce complete_put() helper function.

Signed-off-by: Yajun Deng <yajun.deng@linux.dev>
---
 kernel/sched/completion.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/kernel/sched/completion.c b/kernel/sched/completion.c
index a778554f9dad..dcb737f1edc2 100644
--- a/kernel/sched/completion.c
+++ b/kernel/sched/completion.c
@@ -38,6 +38,13 @@ void complete(struct completion *x)
 }
 EXPORT_SYMBOL(complete);
 
+void complete_put(refcount_t *r, struct completion *x)
+{
+	if (refcount_dec_and_test(r))
+		complete(x);
+}
+EXPORT_SYMBOL(complete_put);
+
 /**
  * complete_all: - signals all threads waiting on this completion
  * @x:  holds the state of this particular completion
-- 
2.32.0


             reply	other threads:[~2021-12-06  4:10 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-12-06  4:03 Yajun Deng [this message]
2021-12-06  7:17 ` [PATCH] completion: introduce complete_put() helper function kernel test robot
2021-12-06  7:37 ` kernel test robot
2021-12-06  8:34 ` Peter Zijlstra
2021-12-06  9:13 ` yajun.deng

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