diff --git a/sys/dev/agp/agp.c b/sys/dev/agp/agp.c
index c4751450b75..7f33a0c9249 100644
--- a/sys/dev/agp/agp.c
+++ b/sys/dev/agp/agp.c
@@ -38,6 +38,7 @@
 #include <sys/ioccom.h>
 #include <sys/agpio.h>
 #include <sys/lock.h>
+#include <sys/lockmgr.h>
 #include <sys/mutex.h>
 #include <sys/proc.h>
 
diff --git a/sys/dev/agp/agp_ali.c b/sys/dev/agp/agp_ali.c
index ac281e84a1d..6f097af3b59 100644
--- a/sys/dev/agp/agp_ali.c
+++ b/sys/dev/agp/agp_ali.c
@@ -35,6 +35,7 @@
 #include <sys/kernel.h>
 #include <sys/bus.h>
 #include <sys/lock.h>
+#include <sys/lockmgr.h>
 #include <sys/mutex.h>
 #include <sys/proc.h>
 
diff --git a/sys/dev/agp/agp_amd.c b/sys/dev/agp/agp_amd.c
index 527765d0826..d855d985646 100644
--- a/sys/dev/agp/agp_amd.c
+++ b/sys/dev/agp/agp_amd.c
@@ -35,6 +35,7 @@
 #include <sys/kernel.h>
 #include <sys/bus.h>
 #include <sys/lock.h>
+#include <sys/lockmgr.h>
 #include <sys/mutex.h>
 #include <sys/proc.h>
 
diff --git a/sys/dev/agp/agp_i810.c b/sys/dev/agp/agp_i810.c
index 5f17de0b62a..942dc921ada 100644
--- a/sys/dev/agp/agp_i810.c
+++ b/sys/dev/agp/agp_i810.c
@@ -36,6 +36,7 @@
 #include <sys/kernel.h>
 #include <sys/bus.h>
 #include <sys/lock.h>
+#include <sys/lockmgr.h>
 #include <sys/mutex.h>
 #include <sys/proc.h>
 
diff --git a/sys/dev/agp/agp_intel.c b/sys/dev/agp/agp_intel.c
index bd86458f852..83c7bbb62e1 100644
--- a/sys/dev/agp/agp_intel.c
+++ b/sys/dev/agp/agp_intel.c
@@ -35,6 +35,7 @@
 #include <sys/kernel.h>
 #include <sys/bus.h>
 #include <sys/lock.h>
+#include <sys/lockmgr.h>
 #include <sys/mutex.h>
 #include <sys/proc.h>
 
diff --git a/sys/dev/agp/agp_sis.c b/sys/dev/agp/agp_sis.c
index adc258f441b..5c4f90e6cf8 100644
--- a/sys/dev/agp/agp_sis.c
+++ b/sys/dev/agp/agp_sis.c
@@ -35,6 +35,7 @@
 #include <sys/kernel.h>
 #include <sys/bus.h>
 #include <sys/lock.h>
+#include <sys/lockmgr.h>
 #include <sys/mutex.h>
 #include <sys/proc.h>
 
diff --git a/sys/dev/agp/agp_via.c b/sys/dev/agp/agp_via.c
index 3651cf2cd82..6db351f96d9 100644
--- a/sys/dev/agp/agp_via.c
+++ b/sys/dev/agp/agp_via.c
@@ -35,6 +35,7 @@
 #include <sys/kernel.h>
 #include <sys/bus.h>
 #include <sys/lock.h>
+#include <sys/lockmgr.h>
 #include <sys/mutex.h>
 #include <sys/proc.h>
 
diff --git a/sys/pci/agp.c b/sys/pci/agp.c
index c4751450b75..7f33a0c9249 100644
--- a/sys/pci/agp.c
+++ b/sys/pci/agp.c
@@ -38,6 +38,7 @@
 #include <sys/ioccom.h>
 #include <sys/agpio.h>
 #include <sys/lock.h>
+#include <sys/lockmgr.h>
 #include <sys/mutex.h>
 #include <sys/proc.h>
 
diff --git a/sys/pci/agp_ali.c b/sys/pci/agp_ali.c
index ac281e84a1d..6f097af3b59 100644
--- a/sys/pci/agp_ali.c
+++ b/sys/pci/agp_ali.c
@@ -35,6 +35,7 @@
 #include <sys/kernel.h>
 #include <sys/bus.h>
 #include <sys/lock.h>
+#include <sys/lockmgr.h>
 #include <sys/mutex.h>
 #include <sys/proc.h>
 
diff --git a/sys/pci/agp_amd.c b/sys/pci/agp_amd.c
index 527765d0826..d855d985646 100644
--- a/sys/pci/agp_amd.c
+++ b/sys/pci/agp_amd.c
@@ -35,6 +35,7 @@
 #include <sys/kernel.h>
 #include <sys/bus.h>
 #include <sys/lock.h>
+#include <sys/lockmgr.h>
 #include <sys/mutex.h>
 #include <sys/proc.h>
 
diff --git a/sys/pci/agp_i810.c b/sys/pci/agp_i810.c
index 5f17de0b62a..942dc921ada 100644
--- a/sys/pci/agp_i810.c
+++ b/sys/pci/agp_i810.c
@@ -36,6 +36,7 @@
 #include <sys/kernel.h>
 #include <sys/bus.h>
 #include <sys/lock.h>
+#include <sys/lockmgr.h>
 #include <sys/mutex.h>
 #include <sys/proc.h>
 
diff --git a/sys/pci/agp_intel.c b/sys/pci/agp_intel.c
index bd86458f852..83c7bbb62e1 100644
--- a/sys/pci/agp_intel.c
+++ b/sys/pci/agp_intel.c
@@ -35,6 +35,7 @@
 #include <sys/kernel.h>
 #include <sys/bus.h>
 #include <sys/lock.h>
+#include <sys/lockmgr.h>
 #include <sys/mutex.h>
 #include <sys/proc.h>
 
diff --git a/sys/pci/agp_sis.c b/sys/pci/agp_sis.c
index adc258f441b..5c4f90e6cf8 100644
--- a/sys/pci/agp_sis.c
+++ b/sys/pci/agp_sis.c
@@ -35,6 +35,7 @@
 #include <sys/kernel.h>
 #include <sys/bus.h>
 #include <sys/lock.h>
+#include <sys/lockmgr.h>
 #include <sys/mutex.h>
 #include <sys/proc.h>
 
diff --git a/sys/pci/agp_via.c b/sys/pci/agp_via.c
index 3651cf2cd82..6db351f96d9 100644
--- a/sys/pci/agp_via.c
+++ b/sys/pci/agp_via.c
@@ -35,6 +35,7 @@
 #include <sys/kernel.h>
 #include <sys/bus.h>
 #include <sys/lock.h>
+#include <sys/lockmgr.h>
 #include <sys/mutex.h>
 #include <sys/proc.h>