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Anton Vorontsov060287b2012-07-09 17:10:41 -07001#ifndef __PSTORE_INTERNAL_H__
2#define __PSTORE_INTERNAL_H__
3
Anton Vorontsov67a101f2012-07-17 11:37:07 -07004#include <linux/types.h>
5#include <linux/time.h>
Anton Vorontsov060287b2012-07-09 17:10:41 -07006#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
Anton Vorontsov65f8c952012-07-17 14:26:15 -070042#ifdef CONFIG_PSTORE_FTRACE
43extern void pstore_register_ftrace(void);
Geliang Tangee1d2672015-10-20 00:39:03 -070044extern void pstore_unregister_ftrace(void);
Anton Vorontsov65f8c952012-07-17 14:26:15 -070045#else
46static inline void pstore_register_ftrace(void) {}
Geliang Tangee1d2672015-10-20 00:39:03 -070047static inline void pstore_unregister_ftrace(void) {}
Anton Vorontsov65f8c952012-07-17 14:26:15 -070048#endif
49
Mark Salyzyn9d5438f2015-01-16 16:01:10 -080050#ifdef CONFIG_PSTORE_PMSG
51extern void pstore_register_pmsg(void);
Geliang Tangee1d2672015-10-20 00:39:03 -070052extern void pstore_unregister_pmsg(void);
Mark Salyzyn9d5438f2015-01-16 16:01:10 -080053#else
54static inline void pstore_register_pmsg(void) {}
Geliang Tangee1d2672015-10-20 00:39:03 -070055static inline void pstore_unregister_pmsg(void) {}
Mark Salyzyn9d5438f2015-01-16 16:01:10 -080056#endif
57
Anton Vorontsov060287b2012-07-09 17:10:41 -070058extern struct pstore_info *psinfo;
59
Luck, Tony366f7e72011-03-18 15:33:43 -070060extern void pstore_set_kmsg_bytes(int);
Luck, Tony6dda9262011-08-11 15:14:39 -070061extern void pstore_get_records(int);
Tony Luckca01d6d2010-12-28 14:25:21 -080062extern int pstore_mkfile(enum pstore_type_id, char *psname, u64 id,
Aruna Balakrishnaiah9ad2cbe2013-08-16 13:53:39 -070063 int count, char *data, bool compressed,
64 size_t size, struct timespec time,
65 struct pstore_info *psi);
Geliang Tang7e26e9f2015-10-22 01:02:33 -070066extern bool pstore_is_mounted(void);
Anton Vorontsov060287b2012-07-09 17:10:41 -070067
68#endif