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D30423.diff
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D30423.diff

diff --git a/sys/compat/linuxkpi/common/include/linux/devcoredump.h b/sys/compat/linuxkpi/common/include/linux/devcoredump.h
new file mode 100644
--- /dev/null
+++ b/sys/compat/linuxkpi/common/include/linux/devcoredump.h
@@ -0,0 +1,76 @@
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
+ * Copyright (c) 2020 The FreeBSD Foundation
+ *
+ * This software was developed by Björn Zeeb under sponsorship from
+ * the FreeBSD Foundation.
+ *
+ * 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.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef __LKPI_LINUX_DEVCOREDUMP_H
+#define __LKPI_LINUX_DEVCOREDUMP_H
+
+#include <linux/slab.h>
+#include <linux/scatterlist.h>
+#include <linux/device.h>
+
+static inline void
+_lkpi_dev_coredumpsg_free(struct scatterlist *table)
+{
+ struct scatterlist *iter;
+ struct page *p;
+ int i;
+
+ iter = table;
+ for_each_sg(table, iter, sg_nents(table), i) {
+ p = sg_page(iter);
+ if (p)
+ __free_page(p);
+ }
+
+ /* XXX what about chained tables? */
+ kfree(table);
+}
+
+static inline void
+dev_coredumpv(struct device *dev __unused, void *data, size_t datalen __unused,
+ gfp_t gfp __unused)
+{
+
+ /* UNIMPLEMENTED */
+ vfree(data);
+}
+
+static inline void
+dev_coredumpsg(struct device *dev __unused, struct scatterlist *table,
+ size_t datalen __unused, gfp_t gfp __unused)
+{
+
+ /* UNIMPLEMENTED */
+ _lkpi_dev_coredumpsg_free(table);
+}
+
+#endif /* __LKPI_LINUX_DEVCOREDUMP_H */

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