[Dle-develop] Patch "kdump: Execute kmsg_dump(KMSG_DUMP_PANIC) after smp_send_stop()" has been added to the 3.4-stable tree

[<gr...@li...>]

This is a note to let you know that I've just added the patch titled

    kdump: Execute kmsg_dump(KMSG_DUMP_PANIC) after smp_send_stop()

to the 3.4-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     kdump-execute-kmsg_dump-kmsg_dump_panic-after-smp_send_stop.patch
and it can be found in the queue-3.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <st...@vg...> know about it.


>From 62be73eafaa045d3233337303fb140f7f8a61135 Mon Sep 17 00:00:00 2001
From: Seiji Aguchi <sei...@hd...>
Date: Tue, 15 May 2012 17:35:09 -0400
Subject: kdump: Execute kmsg_dump(KMSG_DUMP_PANIC) after smp_send_stop()

From: Seiji Aguchi <sei...@hd...>

commit 62be73eafaa045d3233337303fb140f7f8a61135 upstream.

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 <sei...@hd...>
Acked-by: Don Zickus <dz...@re...>
Cc: dle...@li... <dle...@li...>
Cc: Satoru Moriya <sat...@hd...>
Cc: Tony Luck <ton...@in...>
Cc: a.p...@ch... <a.p...@ch...>
Link: http://lkml.kernel.org/r/5C4...@US...
Signed-off-by: Ingo Molnar <mi...@ke...>
Signed-off-by: Greg Kroah-Hartman <gr...@li...>

---
 kernel/panic.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- 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);


Patches currently in stable-queue which might be from sei...@hd... are

queue-3.4/kdump-execute-kmsg_dump-kmsg_dump_panic-after-smp_send_stop.patch