2 * Persistent Storage - pstore.h
4 * Copyright (C) 2010 Intel Corporation <tony.luck@intel.com>
6 * This code is the generic layer to export data records from platform
7 * level persistent storage via a file system.
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 #ifndef _LINUX_PSTORE_H
23 #define _LINUX_PSTORE_H
25 #include <linux/time.h>
26 #include <linux/kmsg_dump.h>
30 PSTORE_TYPE_DMESG = 0,
32 PSTORE_TYPE_CONSOLE = 2,
33 PSTORE_TYPE_FTRACE = 3,
34 PSTORE_TYPE_UNKNOWN = 255
40 spinlock_t buf_lock; /* serialize access to 'buf' */
43 struct mutex read_mutex; /* serialize open/read/close */
44 int (*open)(struct pstore_info *psi);
45 int (*close)(struct pstore_info *psi);
46 ssize_t (*read)(u64 *id, enum pstore_type_id *type,
47 struct timespec *time, char **buf,
48 struct pstore_info *psi);
49 int (*write)(enum pstore_type_id type,
50 enum kmsg_dump_reason reason, u64 *id,
51 unsigned int part, size_t size, struct pstore_info *psi);
52 int (*write_buf)(enum pstore_type_id type,
53 enum kmsg_dump_reason reason, u64 *id,
54 unsigned int part, const char *buf, size_t size,
55 struct pstore_info *psi);
56 int (*erase)(enum pstore_type_id type, u64 id,
57 struct pstore_info *psi);
62 #ifdef CONFIG_PSTORE_FTRACE
63 extern void pstore_ftrace_call(unsigned long ip, unsigned long parent_ip);
65 static inline void pstore_ftrace_call(unsigned long ip, unsigned long parent_ip)
70 extern int pstore_register(struct pstore_info *);
73 pstore_register(struct pstore_info *psi)
79 #endif /*_LINUX_PSTORE_H*/