linux-kernel - [PATCH] kexec: do not call kmsg

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Message-ID: <20111125081959.GA2505@darkstar.nay.redhat.com>
Date:	Fri, 25 Nov 2011 16:19:59 +0800
From:	Dave Young <dyoung@...hat.com>
To:	ebiederm@...ssion.com, kexec@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] kexec: do not call kmsg_dump in crashdump

mtd/ram oops dumper will make more functions envolved. In case crash kexec, 
we should avoid kmsg dumper to ensure crashdump success.

kill kmsg_dump callback while crash dumping 

Signed-off-by: Dave Young <dyoung@...hat.com>
---
 kernel/kexec.c |    2 --
 1 file changed, 2 deletions(-)

--- linux-2.6.orig/kernel/kexec.c	2011-11-18 16:34:18.000000000 +0800
+++ linux-2.6/kernel/kexec.c	2011-11-24 16:05:08.138660500 +0800
@@ -1094,8 +1094,6 @@ void crash_kexec(struct pt_regs *regs)
 		if (kexec_crash_image) {
 			struct pt_regs fixed_regs;
 
-			kmsg_dump(KMSG_DUMP_KEXEC);
-
 			crash_setup_regs(&fixed_regs, regs);
 			crash_save_vmcoreinfo();
 			machine_crash_shutdown(&fixed_regs);
--
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