From 19096bce815716cf93fc1ef3965629c3affa26f1 Mon Sep 17 00:00:00 2001
From: Wedson Almeida Filho <walmeida@microsoft.com>
Date: Sun, 26 Mar 2023 00:57:38 -0300
Subject: rust: sync: introduce `CondVar`

This is the traditional condition variable or monitor synchronisation
primitive. It is implemented with C's `wait_queue_head_t`.

It allows users to release a lock and go to sleep while guaranteeing
that notifications won't be missed. This is achieved by enqueuing a wait
entry before releasing the lock.

Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Will Deacon <will@kernel.org>
Cc: Waiman Long <longman@redhat.com>
Reviewed-by: Martin Rodriguez Reboredo <yakoyoku@gmail.com>
Signed-off-by: Wedson Almeida Filho <walmeida@microsoft.com>
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Link: https://lore.kernel.org/r/20230411054543.21278-12-wedsonaf@gmail.com
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
---
 rust/bindings/bindings_helper.h | 1 +
 1 file changed, 1 insertion(+)

(limited to 'rust/bindings/bindings_helper.h')

diff --git a/rust/bindings/bindings_helper.h b/rust/bindings/bindings_helper.h
index 03656a44a83f..50e7a76d5455 100644
--- a/rust/bindings/bindings_helper.h
+++ b/rust/bindings/bindings_helper.h
@@ -8,6 +8,7 @@
 
 #include <linux/slab.h>
 #include <linux/refcount.h>
+#include <linux/wait.h>
 #include <linux/sched.h>
 
 /* `bindgen` gets confused at certain things. */
-- 
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