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-rw-r--r--sys/amd64/include/mutex.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/sys/amd64/include/mutex.h b/sys/amd64/include/mutex.h
index ca518d9..881cbfa 100644
--- a/sys/amd64/include/mutex.h
+++ b/sys/amd64/include/mutex.h
@@ -146,6 +146,7 @@ void _mtx_exit(struct mtx *mtxp, int type, const char *file, int line);
/* Global locks */
extern struct mtx sched_lock;
extern struct mtx Giant;
+extern struct mtx clock_lock;
/*
* Used to replace return with an exit Giant and return.
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