* [RFC][PATCH v3 1/3] Move kmsg_dump(KMSG_DUMP_PANIC) below smp_send_stop()
@ 2011-12-02 22:09 Seiji Aguchi
2011-12-12 16:01 ` Don Zickus
0 siblings, 1 reply; 2+ messages in thread
From: Seiji Aguchi @ 2011-12-02 22:09 UTC (permalink / raw)
To: linux-kernel@vger.kernel.org, Luck, Tony, Don Zickus,
Matthew Garrett, Vivek Goyal, Chen, Gong,
akpm@linux-foundation.org, len.brown@intel.com,
'ying.huang@intel.com', 'ak@linux.intel.com',
'hughd@chromium.org', 'mingo@elte.hu',
jmorris@namei.org, a.p.zijlstra@chello.nl, namhyung@gmail.com
Cc: dle-develop@lists.sourceforge.net, Satoru Moriya
This patch just moves kmsg_dump(KMSG_DUMP_PANIC) below smp_send_stop
for serializing logging process via smp_send_stop.
Signed-off-by: Seiji Aguchi <seiji.aguchi@hds.com>
---
kernel/panic.c | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/kernel/panic.c b/kernel/panic.c
index b265936..c8e0ae8 100644
--- a/kernel/panic.c
+++ b/kernel/panic.c
@@ -88,8 +88,6 @@ NORET_TYPE 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
@@ -97,6 +95,8 @@ NORET_TYPE 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);
-- 1.7.1
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [RFC][PATCH v3 1/3] Move kmsg_dump(KMSG_DUMP_PANIC) below smp_send_stop()
2011-12-02 22:09 [RFC][PATCH v3 1/3] Move kmsg_dump(KMSG_DUMP_PANIC) below smp_send_stop() Seiji Aguchi
@ 2011-12-12 16:01 ` Don Zickus
0 siblings, 0 replies; 2+ messages in thread
From: Don Zickus @ 2011-12-12 16:01 UTC (permalink / raw)
To: Seiji Aguchi
Cc: linux-kernel@vger.kernel.org, Luck, Tony, Matthew Garrett,
Vivek Goyal, Chen, Gong, akpm@linux-foundation.org,
len.brown@intel.com, 'ying.huang@intel.com',
'ak@linux.intel.com', 'hughd@chromium.org',
'mingo@elte.hu', jmorris@namei.org,
a.p.zijlstra@chello.nl, namhyung@gmail.com,
dle-develop@lists.sourceforge.net, Satoru Moriya
On Fri, Dec 02, 2011 at 05:09:32PM -0500, Seiji Aguchi wrote:
> This patch just moves kmsg_dump(KMSG_DUMP_PANIC) below smp_send_stop
> for serializing logging process via smp_send_stop.
>
> Signed-off-by: Seiji Aguchi <seiji.aguchi@hds.com>
This is a useful first step towards serializing the kmsg_dump framework.
It takes a similar approach to kdump and makes writing code here easier.
Acked-by: Don Zickus <dzickus@redhat.com>
>
> ---
> kernel/panic.c | 4 ++--
> 1 files changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/kernel/panic.c b/kernel/panic.c
> index b265936..c8e0ae8 100644
> --- a/kernel/panic.c
> +++ b/kernel/panic.c
> @@ -88,8 +88,6 @@ NORET_TYPE 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
> @@ -97,6 +95,8 @@ NORET_TYPE 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);
> -- 1.7.1
^ permalink raw reply [flat|nested] 2+ messages in thread
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2011-12-02 22:09 [RFC][PATCH v3 1/3] Move kmsg_dump(KMSG_DUMP_PANIC) below smp_send_stop() Seiji Aguchi
2011-12-12 16:01 ` Don Zickus
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