From: jsg <jsg@openbsd.org>
Date: Fri, 7 Oct 2022 03:00:44 +0000 (+0000)
Subject: add CIRC_SPACE()
X-Git-Url: http://artulab.com/gitweb/?a=commitdiff_plain;h=693b3b5aa32755a34327cac1ff10260eb68f4163;p=openbsd

add CIRC_SPACE()
---

diff --git a/sys/dev/pci/drm/include/linux/circ_buf.h b/sys/dev/pci/drm/include/linux/circ_buf.h
index e69de29bb2d..41742554654 100644
--- a/sys/dev/pci/drm/include/linux/circ_buf.h
+++ b/sys/dev/pci/drm/include/linux/circ_buf.h
@@ -0,0 +1,8 @@
+/* Public domain. */
+
+#ifndef _LINUX_CIRC_BUF_H
+#define _LINUX_CIRC_BUF_H
+
+#define CIRC_SPACE(h,t,s)	(((t) - ((h)+1)) & ((s)-1))
+
+#endif