From: Michael Holzheu <holzheu@linux.vnet.ibm.com>
To: akpm@linux-foundation.org
Cc: oomichi@mxs.nes.nec.co.jp, linux-s390@vger.kernel.org,
mahesh@linux.vnet.ibm.com, heiko.carstens@de.ibm.com,
linux-kernel@vger.kernel.org, hbabu@us.ibm.com,
horms@verge.net.au, ebiederm@xmission.com,
schwidefsky@de.ibm.com, kexec@lists.infradead.org,
vgoyal@redhat.com
Subject: [patch 1/2] kdump: Add KEXEC_CRASH_CONTROL_MEMORY_LIMIT
Date: Fri, 19 Aug 2011 16:18:58 +0200 [thread overview]
Message-ID: <20110819141940.177788593@linux.vnet.ibm.com> (raw)
In-Reply-To: 20110819141857.052232873@linux.vnet.ibm.com
[-- Attachment #1: s390-kdump-common-control-limit.patch --]
[-- Type: text/plain, Size: 1404 bytes --]
From: Michael Holzheu <holzheu@linux.vnet.ibm.com>
On s390 there is a different KEXEC_CONTROL_MEMORY_LIMIT for the normal and
the kdump kexec case. Therefore this patch introduces a new macro
KEXEC_CRASH_CONTROL_MEMORY_LIMIT. This is set to
KEXEC_CONTROL_MEMORY_LIMIT for all architectures that do not define
KEXEC_CRASH_CONTROL_MEMORY_LIMIT.
Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
---
include/linux/kexec.h | 4 ++++
kernel/kexec.c | 2 +-
2 files changed, 5 insertions(+), 1 deletion(-)
--- a/include/linux/kexec.h
+++ b/include/linux/kexec.h
@@ -33,6 +33,10 @@
#error KEXEC_ARCH not defined
#endif
+#ifndef KEXEC_CRASH_CONTROL_MEMORY_LIMIT
+#define KEXEC_CRASH_CONTROL_MEMORY_LIMIT KEXEC_CONTROL_MEMORY_LIMIT
+#endif
+
#define KEXEC_NOTE_HEAD_BYTES ALIGN(sizeof(struct elf_note), 4)
#define KEXEC_CORE_NOTE_NAME "CORE"
#define KEXEC_CORE_NOTE_NAME_BYTES ALIGN(sizeof(KEXEC_CORE_NOTE_NAME), 4)
--- a/kernel/kexec.c
+++ b/kernel/kexec.c
@@ -498,7 +498,7 @@ static struct page *kimage_alloc_crash_c
while (hole_end <= crashk_res.end) {
unsigned long i;
- if (hole_end > KEXEC_CONTROL_MEMORY_LIMIT)
+ if (hole_end > KEXEC_CRASH_CONTROL_MEMORY_LIMIT)
break;
if (hole_end > crashk_res.end)
break;
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next prev parent reply other threads:[~2011-08-19 14:19 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-08-19 14:18 [patch 0/2] kdump: Common code changes for s390 kdump support Michael Holzheu
2011-08-19 14:18 ` Michael Holzheu [this message]
2011-08-19 14:24 ` [patch 1/2] kdump: Add KEXEC_CRASH_CONTROL_MEMORY_LIMIT Vivek Goyal
2011-08-19 14:18 ` [patch 2/2] kdump: Add size to elfcorehdr kernel parameter Michael Holzheu
2011-08-19 14:25 ` Vivek Goyal
2011-08-19 22:03 ` [patch 0/2] kdump: Common code changes for s390 kdump support Andrew Morton
2011-08-22 6:34 ` Martin Schwidefsky
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