linux/fs/pstore/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
  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
  42extern struct pstore_info *psinfo;
  43
  44extern void     pstore_set_kmsg_bytes(int);
  45extern void     pstore_get_records(int);
  46extern int      pstore_mkfile(enum pstore_type_id, char *psname, u64 id,
  47                              char *data, size_t size,
  48                              struct timespec time, struct pstore_info *psi);
  49extern int      pstore_is_mounted(void);
  50
  51#endif
  52
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