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| author | Simon Kagstrom <simon.kagstrom@netinsight.net> | 2009-10-16 14:09:18 +0200 |
|---|---|---|
| committer | David Woodhouse <David.Woodhouse@intel.com> | 2009-11-30 12:01:49 +0000 |
| commit | 456b565cc52fbcdaa2e19ffdf40d9dd3b726d603 (patch) | |
| tree | c73029f31756289ed54183e97e0613f87cef6ed5 /kernel/panic.c | |
| parent | 7cb777a3d71f9d1f7eb149c7a504d21f24219ae8 (diff) | |
| download | talos-op-linux-456b565cc52fbcdaa2e19ffdf40d9dd3b726d603.tar.gz talos-op-linux-456b565cc52fbcdaa2e19ffdf40d9dd3b726d603.zip | |
core: Add kernel message dumper to call on oopses and panics
The core functionality is implemented as per Linus suggestion from
http://lists.infradead.org/pipermail/linux-mtd/2009-October/027620.html
(with the kmsg_dump implementation by Linus). A struct kmsg_dumper has
been added which contains a callback to dump the kernel log buffers on
crashes. The kmsg_dump function gets called from oops_exit() and panic()
and invokes this callbacks with the crash reason.
[dwmw2: Fix log_end handling]
Signed-off-by: Simon Kagstrom <simon.kagstrom@netinsight.net>
Reviewed-by: Anders Grafstrom <anders.grafstrom@netinsight.net>
Reviewed-by: Linus Torvalds <torvalds@linux-foundation.org>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Diffstat (limited to 'kernel/panic.c')
| -rw-r--r-- | kernel/panic.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/kernel/panic.c b/kernel/panic.c index bcdef26e3332..8c43226a544d 100644 --- a/kernel/panic.c +++ b/kernel/panic.c @@ -10,6 +10,7 @@ */ #include <linux/debug_locks.h> #include <linux/interrupt.h> +#include <linux/kmsg_dump.h> #include <linux/kallsyms.h> #include <linux/notifier.h> #include <linux/module.h> @@ -74,6 +75,7 @@ NORET_TYPE void panic(const char * fmt, ...) dump_stack(); #endif + kmsg_dump(KMSG_DUMP_PANIC); /* * If we have crashed and we have a crash kernel loaded let it handle * everything else. @@ -338,6 +340,7 @@ void oops_exit(void) { do_oops_enter_exit(); print_oops_end_marker(); + kmsg_dump(KMSG_DUMP_OOPS); } #ifdef WANT_WARN_ON_SLOWPATH |
