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printk: Introduce kmsg_dump_reason_str()

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The pstore subsystem already had a private version of this function.
With the coming addition of the pstore/zone driver, this needs to be
shared. As it really should live with printk, move it there instead.

Link: https://lore.kernel.org/lkml/20200515184434.8470-4-keescook@chromium.org/
Acked-by: Petr Mladek <pmladek@suse.com>
Acked-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Reviewed-by: Pavel Tatashin <pasha.tatashin@soleen.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
This commit is contained in:
Kees Cook
2020-05-07 19:36:22 -07:00
parent b1f6f161b2
commit fb13cb8a04
3 changed files with 25 additions and 17 deletions
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7
include/linux/kmsg_dump.h
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@@ -70,6 +70,8 @@ void kmsg_dump_rewind(struct kmsg_dumper *dumper);
int kmsg_dump_register(struct kmsg_dumper *dumper);
int kmsg_dump_unregister(struct kmsg_dumper *dumper);
const char *kmsg_dump_reason_str(enum kmsg_dump_reason reason);
#else
static inline void kmsg_dump(enum kmsg_dump_reason reason)
{
@@ -111,6 +113,11 @@ static inline int kmsg_dump_unregister(struct kmsg_dumper *dumper)
{
return -EINVAL;
}
static inline const char *kmsg_dump_reason_str(enum kmsg_dump_reason reason)
{
return "Disabled";
}
#endif
#endif /* _LINUX_KMSG_DUMP_H */