linux-kernel - [RFC][PATCH v3 1/3] Move kmsg_dump(KMSG_DUMP_PANIC) below smp_send

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Message-ID: <5C4C569E8A4B9B42A84A977CF070A35B2C57DC0D0F@USINDEVS01.corp.hds.com>
Date:	Fri, 2 Dec 2011 17:09:32 -0500
From:	Seiji Aguchi <seiji.aguchi@....com>
To:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"Luck, Tony" <tony.luck@...el.com>,
	Don Zickus <dzickus@...hat.com>,
	Matthew Garrett <mjg@...hat.com>,
	Vivek Goyal <vgoyal@...hat.com>,
	"Chen, Gong" <gong.chen@...el.com>,
	"akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
	"len.brown@...el.com" <len.brown@...el.com>,
	"'ying.huang@...el.com'" <'ying.huang@...el.com'>,
	"'ak@...ux.intel.com'" <'ak@...ux.intel.com'>,
	"'hughd@...omium.org'" <'hughd@...omium.org'>,
	"'mingo@...e.hu'" <'mingo@...e.hu'>,
	"jmorris@...ei.org" <jmorris@...ei.org>,
	"a.p.zijlstra@...llo.nl" <a.p.zijlstra@...llo.nl>,
	"namhyung@...il.com" <namhyung@...il.com>
CC:	"dle-develop@...ts.sourceforge.net" 
	<dle-develop@...ts.sourceforge.net>,
	Satoru Moriya <satoru.moriya@....com>
Subject: [RFC][PATCH v3 1/3] Move kmsg_dump(KMSG_DUMP_PANIC) below
 smp_send_stop()

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@....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
--
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