Move files to match FreeBSD layout

1 files changed, 67 insertions, 0 deletions

diff --git a/freebsd/sys/kern/subr_bufring.c b/freebsd/sys/kern/subr_bufring.c
new file mode 100644
index 00000000..8ec8b9d7
--- /dev/null
+++ b/freebsd/sys/kern/subr_bufring.c
@@ -0,0 +1,67 @@
+#include <freebsd/machine/rtems-bsd-config.h>
+
+/*-
+ * Copyright (c) 2007, 2008 Kip Macy <kmacy@freebsd.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <freebsd/sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+
+#include <freebsd/sys/param.h>
+#include <freebsd/sys/systm.h>
+#include <freebsd/sys/kernel.h>
+#include <freebsd/sys/malloc.h>
+#include <freebsd/sys/ktr.h>
+#include <freebsd/sys/buf_ring.h>
+
+
+struct buf_ring *
+buf_ring_alloc(int count, struct malloc_type *type, int flags, struct mtx *lock)
+{
+	struct buf_ring *br;
+
+	KASSERT(powerof2(count), ("buf ring must be size power of 2"));
+	
+	br = malloc(sizeof(struct buf_ring) + count*sizeof(caddr_t),
+	    type, flags|M_ZERO);
+	if (br == NULL)
+		return (NULL);
+#ifdef DEBUG_BUFRING
+	br->br_lock = lock;
+#endif	
+	br->br_prod_size = br->br_cons_size = count;
+	br->br_prod_mask = br->br_cons_mask = count-1;
+	br->br_prod_head = br->br_cons_head = 0;
+	br->br_prod_tail = br->br_cons_tail = 0;
+		
+	return (br);
+}
+
+void
+buf_ring_free(struct buf_ring *br, struct malloc_type *type)
+{
+	free(br, type);
+}