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 10 extern unsigned long kmsg_bytes; 11 12 #ifdef CONFIG_PSTORE_FTRACE 13 extern void pstore_register_ftrace(void); 14 extern void pstore_unregister_ftrace(void); 15 ssize_t pstore_ftrace_combine_log(char **dest_log, size_t *dest_log_size, 16 const char *src_log, size_t src_log_size); 17 #else 18 static inline void pstore_register_ftrace(void) {} 19 static inline void pstore_unregister_ftrace(void) {} 20 static inline ssize_t 21 pstore_ftrace_combine_log(char **dest_log, size_t *dest_log_size, 22 const char *src_log, size_t src_log_size) 23 { 24 *dest_log_size = 0; 25 return 0; 26 } 27 #endif 28 29 #ifdef CONFIG_PSTORE_PMSG 30 extern void pstore_register_pmsg(void); 31 extern void pstore_unregister_pmsg(void); 32 #else 33 static inline void pstore_register_pmsg(void) {} 34 static inline void pstore_unregister_pmsg(void) {} 35 #endif 36 37 extern struct pstore_info *psinfo; 38 39 extern void pstore_set_kmsg_bytes(int); 40 extern void pstore_get_records(int); 41 extern void pstore_get_backend_records(struct pstore_info *psi, 42 struct dentry *root, int quiet); 43 extern int pstore_put_backend_records(struct pstore_info *psi); 44 extern int pstore_mkfile(struct dentry *root, 45 struct pstore_record *record); 46 extern void pstore_record_init(struct pstore_record *record, 47 struct pstore_info *psi); 48 49 /* Called during pstore init/exit. */ 50 int __init pstore_init_fs(void); 51 void __exit pstore_exit_fs(void); 52 53 #endif 54