1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2020 The FreeBSD Foundation 5 * 6 * This software was developed by Björn Zeeb under sponsorship from 7 * the FreeBSD Foundation. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 */ 30 31 #ifndef _LINUXKPI_LINUX_DEVCOREDUMP_H 32 #define _LINUXKPI_LINUX_DEVCOREDUMP_H 33 34 #include <linux/slab.h> 35 #include <linux/scatterlist.h> 36 #include <linux/device.h> 37 38 static inline void 39 _lkpi_dev_coredumpsg_free(struct scatterlist *table) 40 { 41 struct scatterlist *iter; 42 struct page *p; 43 int i; 44 45 iter = table; 46 for_each_sg(table, iter, sg_nents(table), i) { 47 p = sg_page(iter); 48 if (p) 49 __free_page(p); 50 } 51 52 /* XXX what about chained tables? */ 53 kfree(table); 54 } 55 56 static inline void 57 dev_coredumpv(struct device *dev __unused, void *data, size_t datalen __unused, 58 gfp_t gfp __unused) 59 { 60 61 /* UNIMPLEMENTED */ 62 vfree(data); 63 } 64 65 static inline void 66 dev_coredumpsg(struct device *dev __unused, struct scatterlist *table, 67 size_t datalen __unused, gfp_t gfp __unused) 68 { 69 70 /* UNIMPLEMENTED */ 71 _lkpi_dev_coredumpsg_free(table); 72 } 73 74 #endif /* _LINUXKPI_LINUX_DEVCOREDUMP_H */ 75