[Dle-develop] [tip:core/debug] kdump: Execute kmsg_dump(KMSG_DUMP_PANIC) after smp_send_stop()

[tip-bot f. S. A. <sei...@hd...>]

Commit-ID:  f80f749132165fb083865e51afd65cf0f05dcd62
Gitweb:     http://git.kernel.org/tip/f80f749132165fb083865e51afd65cf0f05dcd62
Author:     Seiji Aguchi <sei...@hd...>
AuthorDate: Tue, 15 May 2012 17:35:09 -0400
Committer:  Ingo Molnar <mi...@ke...>
CommitDate: Fri, 18 May 2012 10:07:37 +0200

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 <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...>
---
 kernel/panic.c |    2 --
 1 files changed, 0 insertions(+), 2 deletions(-)

diff --git a/kernel/panic.c b/kernel/panic.c
index b6215b7..d4f0b61 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