From: Mitsuhiro Tanino <mitsuhiro.tanino.gm@hitachi.com>
To: Vivek Goyal <vgoyal@redhat.com>,
kexec@lists.infradead.org, linux-kernel@vger.kernel.org
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Subject: [PATCH 2/2 v2] kexec: Export PG_hwpoison flag into vmcoreinfo
Date: Wed, 31 Oct 2012 23:05:05 +0900 [thread overview]
Message-ID: <50913011.2030900@hitachi.com> (raw)
In-Reply-To: <20121030143750.GF2290@redhat.com>
This patch exports a PG_hwpoison into vmcoreinfo when
CONFIG_MEMORY_FAILURE is defined.
"makedumpfile" needs to read information of memory, such as
'mem_section', 'zone', 'pageflags' from vmcore.
We introduce a function into "makedumpfile" to exclude
hwpoison page from vmcore dump.
In order to introduce this function, PG_hwpoison flag have
to export into vmcoreinfo.
Signed-off-by: Mitsuhiro Tanino <mitsuhiro.tanino.gm@hitachi.com>
---
kernel/kexec.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/kernel/kexec.c b/kernel/kexec.c
index 0668d58..0d5d6bc 100644
--- a/kernel/kexec.c
+++ b/kernel/kexec.c
@@ -1513,6 +1513,9 @@ static int __init crash_save_vmcoreinfo_init(void)
VMCOREINFO_NUMBER(PG_lru);
VMCOREINFO_NUMBER(PG_private);
VMCOREINFO_NUMBER(PG_swapcache);
+#ifdef CONFIG_MEMORY_FAILURE
+ VMCOREINFO_NUMBER(PG_hwpoison);
+#endif
arch_crash_save_vmcoreinfo();
update_vmcoreinfo_note();
--
1.7.10.1
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next prev parent reply other threads:[~2012-10-31 14:05 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-30 14:06 [Patch 0/2] Exclude hwpoison page from vmcore dump Mitsuhiro Tanino
2012-10-30 14:37 ` Vivek Goyal
2012-10-31 13:51 ` Mitsuhiro Tanino
2012-10-31 14:14 ` Vivek Goyal
2012-11-01 10:32 ` Mitsuhiro Tanino
2012-11-01 10:40 ` Eric W. Biederman
2012-10-31 14:04 ` [PATCH 0/2 v2] " Mitsuhiro Tanino
2012-10-31 14:05 ` [PATCH 1/2 v2] makedumpfile: Add a default action to exclude hwpoison page from vmcore Mitsuhiro Tanino
2012-11-05 6:04 ` Atsushi Kumagai
2012-10-31 14:05 ` Mitsuhiro Tanino [this message]
2013-02-08 8:49 ` [PATCH 2/2 v2] kexec: Export PG_hwpoison flag into vmcoreinfo Atsushi Kumagai
2013-02-12 3:07 ` Mitsuhiro Tanino
2013-02-12 10:58 ` Eric W. Biederman
2013-02-12 13:29 ` Mitsuhiro Tanino
2013-02-15 8:48 ` Mitsuhiro Tanino
2013-02-15 9:35 ` Atsushi Kumagai
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