pstore: new filesystem interface to platform persistent storage

Some platforms have a small amount of non-volatile storage that
can be used to store information useful to diagnose the cause of
a system crash.  This is the generic part of a file system interface
that presents information from the crash as a series of files in
/dev/pstore.  Once the information has been seen, the underlying
storage is freed by deleting the files.

Signed-off-by: Tony Luck <tony.luck@intel.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/fs/pstore/internal.h b/fs/pstore/internal.h
new file mode 100644
index 000000000000..76c26d2fab29
--- /dev/null
+++ b/fs/pstore/internal.h
@@ -0,0 +1,7 @@
+extern void     pstore_get_records(void);
+extern int      pstore_mkfile(enum pstore_type_id, char *psname, u64 id,
+                              char *data, size_t size,
+                              struct timespec time, int (*erase)(u64));
+extern int      pstore_is_mounted(void);
+
+extern struct kobj_attribute pstore_kmsg_bytes_attr;