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-rw-r--r--sys/kern/kern_synch.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/sys/kern/kern_synch.c b/sys/kern/kern_synch.c
index 67ef617..9d214bb 100644
--- a/sys/kern/kern_synch.c
+++ b/sys/kern/kern_synch.c
@@ -31,6 +31,7 @@
#include <sys/systm.h>
#include <sys/errno.h>
#include <sys/syslog.h>
+#include <sys/spinlock.h>
#include <dev/timer.h>
#define pr_trace(fmt, ...) kprintf("synch: " fmt, ##__VA_ARGS__)