[RFC PATCH v4 3/9] printk-rb: fix missing includes/exports

[John Ogness]

Add missing includes and exports.

Signed-off-by: John Ogness <john.ogness@xxxxxxxxxxxxx>
---
 kernel/printk/dataring.c   | 1 +
 kernel/printk/numlist.c    | 1 +
 kernel/printk/ringbuffer.c | 4 ++++
 3 files changed, 6 insertions(+)

diff --git a/kernel/printk/dataring.c b/kernel/printk/dataring.c
index 911bac593ec1..6642e085a05d 100644
--- a/kernel/printk/dataring.c
+++ b/kernel/printk/dataring.c
@@ -1,5 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0
 
+#include <linux/kernel.h>
 #include "dataring.h"
 
 /**
diff --git a/kernel/printk/numlist.c b/kernel/printk/numlist.c
index df3f89e7f7fd..d5e224dafc0c 100644
--- a/kernel/printk/numlist.c
+++ b/kernel/printk/numlist.c
@@ -1,5 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0
 
+#include <linux/kernel.h>
 #include <linux/sched.h>
 #include "numlist.h"
 
diff --git a/kernel/printk/ringbuffer.c b/kernel/printk/ringbuffer.c
index 59bf59aba3de..b9fc13597b10 100644
--- a/kernel/printk/ringbuffer.c
+++ b/kernel/printk/ringbuffer.c
@@ -1,5 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0
 
+#include <linux/kernel.h>
 #include <linux/irqflags.h>
 #include <linux/string.h>
 #include <linux/err.h>
@@ -222,6 +223,7 @@ struct nl_node *prb_desc_node(unsigned long id, void *arg)
 
 	return &d->list;
 }
+EXPORT_SYMBOL(prb_desc_node);
 
 /**
  * prb_desc_busy() - Numbered list callback to report if a node is busy.
@@ -262,6 +264,7 @@ bool prb_desc_busy(unsigned long id, void *arg)
 	/* hC: */
 	return (id == atomic_long_read(&d->id));
 }
+EXPORT_SYMBOL(prb_desc_busy);
 
 /**
  * prb_getdesc() - Data ringbuffer callback to lookup a descriptor from an ID.
@@ -296,6 +299,7 @@ struct dr_desc *prb_getdesc(unsigned long id, void *arg)
 	/* iB: */
 	return &d->desc;
 }
+EXPORT_SYMBOL(prb_getdesc);
 
 /**
  * assign_desc() - Assign a descriptor to the caller.
-- 
2.20.1