fs/pstore/internal.h

   1 #ifndef __PSTORE_INTERNAL_H__
   2 #define __PSTORE_INTERNAL_H__
   3
   4 #include <linux/pstore.h>
   5
   6 #if NR_CPUS <= 2 && defined(CONFIG_ARM_THUMB)
   7 #define PSTORE_CPU_IN_IP 0x1
   8 #elif NR_CPUS <= 4 && defined(CONFIG_ARM)
   9 #define PSTORE_CPU_IN_IP 0x3
  10 #endif
  11
  12 struct pstore_ftrace_record {
  13         unsigned long ip;
  14         unsigned long parent_ip;
  15 #ifndef PSTORE_CPU_IN_IP
  16         unsigned int cpu;
  17 #endif
  18 };
  19
  20 static inline void
  21 pstore_ftrace_encode_cpu(struct pstore_ftrace_record *rec, unsigned int cpu)
  22 {
  23 #ifndef PSTORE_CPU_IN_IP
  24         rec->cpu = cpu;
  25 #else
  26         rec->ip |= cpu;
  27 #endif
  28 }
  29
  30 static inline unsigned int
  31 pstore_ftrace_decode_cpu(struct pstore_ftrace_record *rec)
  32 {
  33 #ifndef PSTORE_CPU_IN_IP
  34         return rec->cpu;
  35 #else
  36         return rec->ip & PSTORE_CPU_IN_IP;
  37 #endif
  38 }
  39
  40 extern struct pstore_info *psinfo;
  41
  42 extern void     pstore_set_kmsg_bytes(int);
  43 extern void     pstore_get_records(int);
  44 extern int      pstore_mkfile(enum pstore_type_id, char *psname, u64 id,
  45                               char *data, size_t size,
  46                               struct timespec time, struct pstore_info *psi);
  47 extern int      pstore_is_mounted(void);
  48
  49 #endif