diff options
| author | Pavel Tatashin <pasha.tatashin@soleen.com> | 2020-05-05 18:45:06 +0300 |
|---|---|---|
| committer | Kees Cook <keescook@chromium.org> | 2020-05-30 20:34:03 +0300 |
| commit | b1f6f161b236d0e5a9222fb8b482e65aaff13689 (patch) | |
| tree | e5cf158f2ddb84fa36502e54b1b87092a53291b9 /include | |
| parent | 6d3cf962dd1a95df868c547b090bfc4c7977f4be (diff) | |
| download | linux-b1f6f161b236d0e5a9222fb8b482e65aaff13689.tar.xz | |
printk: honor the max_reason field in kmsg_dumper
kmsg_dump() allows to dump kmesg buffer for various system events: oops,
panic, reboot, etc. It provides an interface to register a callback
call for clients, and in that callback interface there is a field
"max_reason", but it was getting ignored when set to any "reason"
higher than KMSG_DUMP_OOPS unless "always_kmsg_dump" was passed as
kernel parameter.
Allow clients to actually control their "max_reason", and keep the
current behavior when "max_reason" is not set.
Signed-off-by: Pavel Tatashin <pasha.tatashin@soleen.com>
Link: https://lore.kernel.org/lkml/20200515184434.8470-3-keescook@chromium.org/
Reviewed-by: Petr Mladek <pmladek@suse.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/kmsg_dump.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/kmsg_dump.h b/include/linux/kmsg_dump.h index 3f82b5cb2d82..9826014771ab 100644 --- a/include/linux/kmsg_dump.h +++ b/include/linux/kmsg_dump.h @@ -26,6 +26,7 @@ enum kmsg_dump_reason { KMSG_DUMP_OOPS, KMSG_DUMP_EMERG, KMSG_DUMP_SHUTDOWN, + KMSG_DUMP_MAX }; /** |