diff options
Diffstat (limited to 'fs/pstore')
| -rw-r--r-- | fs/pstore/platform.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/fs/pstore/platform.c b/fs/pstore/platform.c index 49ff1de2178a..c5300ec31696 100644 --- a/fs/pstore/platform.c +++ b/fs/pstore/platform.c @@ -37,6 +37,8 @@ static DEFINE_SPINLOCK(pstore_lock); static struct pstore_info *psinfo; +static char *backend; + /* How much of the console log to snapshot */ static unsigned long kmsg_bytes = 10240; @@ -131,6 +133,12 @@ int pstore_register(struct pstore_info *psi) spin_unlock(&pstore_lock); return -EBUSY; } + + if (backend && strcmp(backend, psi->name)) { + spin_unlock(&pstore_lock); + return -EINVAL; + } + psinfo = psi; spin_unlock(&pstore_lock); @@ -208,3 +216,6 @@ int pstore_write(enum pstore_type_id type, char *buf, size_t size) return 0; } EXPORT_SYMBOL_GPL(pstore_write); + +module_param(backend, charp, 0444); +MODULE_PARM_DESC(backend, "Pstore backend to use"); |