1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef __PSTORE_INTERNAL_H__
 3#define __PSTORE_INTERNAL_H__
 4
 5#include <linux/types.h>
 6#include <linux/time.h>
 7#include <linux/pstore.h>
 8
 9#define PSTORE_DEFAULT_KMSG_BYTES 10240
10extern unsigned long kmsg_bytes;
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
11
12#ifdef CONFIG_PSTORE_FTRACE
13extern void pstore_register_ftrace(void);
14extern void pstore_unregister_ftrace(void);
15#else
16static inline void pstore_register_ftrace(void) {}
17static inline void pstore_unregister_ftrace(void) {}
18#endif
19
20#ifdef CONFIG_PSTORE_PMSG
21extern void pstore_register_pmsg(void);
22extern void pstore_unregister_pmsg(void);
23#else
24static inline void pstore_register_pmsg(void) {}
25static inline void pstore_unregister_pmsg(void) {}
26#endif
27
28extern struct pstore_info *psinfo;
29
30extern void	pstore_set_kmsg_bytes(int);
31extern void	pstore_get_records(int);
32extern void	pstore_get_backend_records(struct pstore_info *psi,
33					   struct dentry *root, int quiet);
34extern int	pstore_mkfile(struct dentry *root,
35			      struct pstore_record *record);
36extern bool	pstore_is_mounted(void);
37extern void	pstore_record_init(struct pstore_record *record,
38				   struct pstore_info *psi);
39
40/* Called during pstore init/exit. */
41int __init	pstore_init_fs(void);
42void __exit	pstore_exit_fs(void);
43
44#endif

 
 1#ifndef __PSTORE_INTERNAL_H__
 2#define __PSTORE_INTERNAL_H__
 3
 4#include <linux/types.h>
 5#include <linux/time.h>
 6#include <linux/pstore.h>
 7
 8#if NR_CPUS <= 2 && defined(CONFIG_ARM_THUMB)
 9#define PSTORE_CPU_IN_IP 0x1
10#elif NR_CPUS <= 4 && defined(CONFIG_ARM)
11#define PSTORE_CPU_IN_IP 0x3
12#endif
13
14struct pstore_ftrace_record {
15	unsigned long ip;
16	unsigned long parent_ip;
17#ifndef PSTORE_CPU_IN_IP
18	unsigned int cpu;
19#endif
20};
21
22static inline void
23pstore_ftrace_encode_cpu(struct pstore_ftrace_record *rec, unsigned int cpu)
24{
25#ifndef PSTORE_CPU_IN_IP
26	rec->cpu = cpu;
27#else
28	rec->ip |= cpu;
29#endif
30}
31
32static inline unsigned int
33pstore_ftrace_decode_cpu(struct pstore_ftrace_record *rec)
34{
35#ifndef PSTORE_CPU_IN_IP
36	return rec->cpu;
37#else
38	return rec->ip & PSTORE_CPU_IN_IP;
39#endif
40}
41
42#ifdef CONFIG_PSTORE_FTRACE
43extern void pstore_register_ftrace(void);
44extern void pstore_unregister_ftrace(void);
45#else
46static inline void pstore_register_ftrace(void) {}
47static inline void pstore_unregister_ftrace(void) {}
48#endif
49
50#ifdef CONFIG_PSTORE_PMSG
51extern void pstore_register_pmsg(void);
52extern void pstore_unregister_pmsg(void);
53#else
54static inline void pstore_register_pmsg(void) {}
55static inline void pstore_unregister_pmsg(void) {}
56#endif
57
58extern struct pstore_info *psinfo;
59
60extern void	pstore_set_kmsg_bytes(int);
61extern void	pstore_get_records(int);
62extern int	pstore_mkfile(enum pstore_type_id, char *psname, u64 id,
63			      int count, char *data, bool compressed,
64			      size_t size, struct timespec time,
65			      struct pstore_info *psi);
66extern bool	pstore_is_mounted(void);
 
 
 
 
 
 
67
68#endif