diff options
| author | Seiji Aguchi <seiji.aguchi@hds.com> | 2012-05-15 17:35:09 -0400 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2012-05-18 14:02:10 +0200 |
| commit | 62be73eafaa045d3233337303fb140f7f8a61135 (patch) | |
| tree | 8bc8c99a4682b517f89f1733dfb1574de46b7826 /kernel/panic.c | |
| parent | 2a01bb3885c9145dbb7583d5aa5f5d5504f6f46f (diff) | |
| download | lwn-62be73eafaa045d3233337303fb140f7f8a61135.tar.gz lwn-62be73eafaa045d3233337303fb140f7f8a61135.zip | |
kdump: Execute kmsg_dump(KMSG_DUMP_PANIC) after smp_send_stop()
This patch moves kmsg_dump(KMSG_DUMP_PANIC) below smp_send_stop(),
to serialize the crash-logging process via smp_send_stop() and to
thus retrieve a more stable crash image of all CPUs stopped.
Signed-off-by: Seiji Aguchi <seiji.aguchi@hds.com>
Acked-by: Don Zickus <dzickus@redhat.com>
Cc: dle-develop@lists.sourceforge.net <dle-develop@lists.sourceforge.net>
Cc: Satoru Moriya <satoru.moriya@hds.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: a.p.zijlstra@chello.nl <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/5C4C569E8A4B9B42A84A977CF070A35B2E4D7A5CE2@USINDEVS01.corp.hds.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/panic.c')
| -rw-r--r-- | kernel/panic.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/kernel/panic.c b/kernel/panic.c index b6215b7ce99d..d2a5f4ecc6dd 100644 --- a/kernel/panic.c +++ b/kernel/panic.c @@ -108,8 +108,6 @@ void panic(const char *fmt, ...) */ crash_kexec(NULL); - kmsg_dump(KMSG_DUMP_PANIC); - /* * Note smp_send_stop is the usual smp shutdown function, which * unfortunately means it may not be hardened to work in a panic @@ -117,6 +115,8 @@ void panic(const char *fmt, ...) */ smp_send_stop(); + kmsg_dump(KMSG_DUMP_PANIC); + atomic_notifier_call_chain(&panic_notifier_list, 0, buf); bust_spinlocks(0); |