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internal.h
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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 
15  unsigned long ip;
16  unsigned long parent_ip;
17 #ifndef PSTORE_CPU_IN_IP
18  unsigned int cpu;
19 #endif
20 };
21 
22 static inline void
23 pstore_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 
32 static inline unsigned int
33 pstore_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
43 extern void pstore_register_ftrace(void);
44 #else
45 static inline void pstore_register_ftrace(void) {}
46 #endif
47 
48 extern struct pstore_info *psinfo;
49 
50 extern void pstore_set_kmsg_bytes(int);
51 extern void pstore_get_records(int);
52 extern int pstore_mkfile(enum pstore_type_id, char *psname, u64 id,
53  char *data, size_t size,
54  struct timespec time, struct pstore_info *psi);
55 extern int pstore_is_mounted(void);
56 
57 #endif