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From: HATAYAMA Daisuke <d.hatayama@jp.fujitsu.com>
To: vgoyal@redhat.com, ebiederm@xmission.com, cpw@sgi.com,
	kumagai-atsushi@mxc.nes.nec.co.jp, lisa.mitchell@hp.com,
	heiko.carstens@de.ibm.com, akpm@linux-foundation.org
Cc: zhangyanfei@cn.fujitsu.com, kexec@lists.infradead.org,
	linux-kernel@vger.kernel.org
Subject: [PATCH v3 14/21] kexec, elf: introduce NT_VMCORE_DEBUGINFO note type
Date: Sat, 16 Mar 2013 13:02:05 +0900	[thread overview]
Message-ID: <20130316040205.15064.31351.stgit@localhost6.localdomain6> (raw)
In-Reply-To: <20130316040003.15064.62308.stgit@localhost6.localdomain6>

This patch introduces NT_VMCORE_DEBUGINFO to a unique note type in
VMCOREINFO name, which has had no name so far. The name means that
it's a kind of note type in vmcoreinfo that contains system kernel's
debug information.

Signed-off-by: HATAYAMA Daisuke <d.hatayama@jp.fujitsu.com>
---

 include/uapi/linux/elf.h |    4 ++++
 kernel/kexec.c           |    4 ++--
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/include/uapi/linux/elf.h b/include/uapi/linux/elf.h
index 8072d35..b869904 100644
--- a/include/uapi/linux/elf.h
+++ b/include/uapi/linux/elf.h
@@ -398,6 +398,10 @@ typedef struct elf64_shdr {
 #define NT_METAG_CBUF	0x500		/* Metag catch buffer registers */
 #define NT_METAG_RPIPE	0x501		/* Metag read pipeline state */
 
+/*
+ * Notes exported from /proc/vmcore, belonging to "VMCOREINFO" name.
+ */
+#define NT_VMCORE_DEBUGINFO	0	/* vmcore system kernel's debuginfo */
 
 /* Note header in a PT_NOTE section */
 typedef struct elf32_note {
diff --git a/kernel/kexec.c b/kernel/kexec.c
index 195de6d..6597b82 100644
--- a/kernel/kexec.c
+++ b/kernel/kexec.c
@@ -1438,8 +1438,8 @@ static void update_vmcoreinfo_note(void)
 
 	if (!vmcoreinfo_size)
 		return;
-	buf = append_elf_note(buf, VMCOREINFO_NOTE_NAME, 0, vmcoreinfo_data,
-			      vmcoreinfo_size);
+	buf = append_elf_note(buf, VMCOREINFO_NOTE_NAME, NT_VMCORE_DEBUGINFO,
+			      vmcoreinfo_data, vmcoreinfo_size);
 	final_note(buf);
 }
 


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  parent reply	other threads:[~2013-03-19  2:31 UTC|newest]

Thread overview: 76+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-03-16  4:00 [PATCH v3 00/21] kdump, vmcore: support mmap() on /proc/vmcore HATAYAMA Daisuke
2013-03-16  4:00 ` [PATCH v3 01/21] vmcore: reference e_phoff member explicitly to get position of program header table HATAYAMA Daisuke
2013-03-19 21:44   ` Eric W. Biederman
2013-03-21  2:50     ` HATAYAMA Daisuke
2013-03-21  6:11       ` Eric W. Biederman
2013-03-21 14:12       ` Vivek Goyal
2013-03-22  0:25         ` HATAYAMA Daisuke
2013-03-16  4:00 ` [PATCH v3 02/21] vmcore: clean up by removing unnecessary variable HATAYAMA Daisuke
2013-03-16  4:01 ` [PATCH v3 03/21] vmcore: rearrange program headers without assuming consequtive PT_NOTE entries HATAYAMA Daisuke
2013-03-19 21:59   ` Eric W. Biederman
2013-03-16  4:01 ` [PATCH v3 04/21] vmcore, sysfs: export ELF note segment size instead of vmcoreinfo data size HATAYAMA Daisuke
2013-03-16  4:01 ` [PATCH v3 05/21] vmcore: allocate buffer for ELF headers on page-size alignment HATAYAMA Daisuke
2013-03-16  4:01 ` [PATCH v3 06/21] vmcore: round up buffer size of ELF headers by PAGE_SIZE HATAYAMA Daisuke
2013-03-19 22:07   ` Eric W. Biederman
2013-03-16  4:01 ` [PATCH v3 07/21] vmcore, procfs: introduce a flag to distinguish objects copied in 2nd kernel HATAYAMA Daisuke
2013-03-19 19:35   ` Andrew Morton
2013-03-16  4:01 ` [PATCH v3 08/21] vmcore: copy non page-size aligned head and tail pages " HATAYAMA Daisuke
2013-03-19 19:37   ` Andrew Morton
2013-03-19 20:59   ` Eric W. Biederman
2013-03-19 21:22     ` Vivek Goyal
2013-03-19 23:35       ` Eric W. Biederman
2013-03-16  4:01 ` [PATCH v3 09/21] vmcore: modify vmcore clean-up function to free buffer on " HATAYAMA Daisuke
2013-03-16  4:01 ` [PATCH v3 10/21] vmcore: clean up read_vmcore() HATAYAMA Daisuke
2013-03-16  4:01 ` [PATCH v3 11/21] vmcore: read buffers for vmcore objects copied from old memory HATAYAMA Daisuke
2013-03-16  4:01 ` [PATCH v3 12/21] vmcore: allocate per-cpu crash_notes objects on page-size boundary HATAYAMA Daisuke
2013-03-19 21:06   ` Eric W. Biederman
2013-03-19 22:12   ` Eric W. Biederman
2013-03-20 13:48     ` Vivek Goyal
2013-03-20 20:48       ` Eric W. Biederman
2013-03-16  4:02 ` [PATCH v3 13/21] kexec: allocate vmcoreinfo note buffer " HATAYAMA Daisuke
2013-03-19 21:07   ` Eric W. Biederman
2013-03-19 22:12   ` Eric W. Biederman
2013-03-16  4:02 ` HATAYAMA Daisuke [this message]
2013-03-16  4:02 ` [PATCH v3 15/21] elf: introduce NT_VMCORE_PAD type HATAYAMA Daisuke
2013-03-16  4:02 ` [PATCH v3 16/21] kexec: fill note buffers by NT_VMCORE_PAD notes in page-size boundary HATAYAMA Daisuke
2013-03-19 22:17   ` Eric W. Biederman
2013-03-16  4:02 ` [PATCH v3 17/21] vmcore: check NT_VMCORE_PAD as a mark indicating the end of ELF note buffer HATAYAMA Daisuke
2013-03-19 21:11   ` Eric W. Biederman
2013-03-21  2:59     ` HATAYAMA Daisuke
2013-03-21  3:54       ` Eric W. Biederman
2013-03-21 14:36         ` Vivek Goyal
2013-03-22  0:30           ` HATAYAMA Daisuke
2013-03-22  0:41             ` Eric W. Biederman
2013-03-19 22:20   ` Eric W. Biederman
2013-03-16  4:02 ` [PATCH v3 18/21] vmcore: check if vmcore objects satify mmap()'s page-size boundary requirement HATAYAMA Daisuke
2013-03-19 20:02   ` Andrew Morton
2013-03-19 21:22     ` Eric W. Biederman
2013-03-20 13:51     ` Vivek Goyal
2013-03-19 22:38   ` Eric W. Biederman
2013-03-20 13:57     ` Vivek Goyal
2013-03-20 20:55       ` Eric W. Biederman
2013-03-21  3:25         ` HATAYAMA Daisuke
2013-03-21  4:18           ` Eric W. Biederman
2013-03-21  6:14             ` HATAYAMA Daisuke
2013-03-21  6:29               ` Eric W. Biederman
2013-03-21  6:46                 ` HATAYAMA Daisuke
2013-03-21  7:07                   ` Eric W. Biederman
2013-03-21 15:21                     ` Vivek Goyal
2013-03-21 15:27                       ` Vivek Goyal
2013-03-22  0:43                         ` HATAYAMA Daisuke
2013-03-22  0:54                         ` Eric W. Biederman
2013-03-22  2:30                           ` HATAYAMA Daisuke
2013-03-21 14:57                 ` Vivek Goyal
2013-03-21  7:22               ` Eric W. Biederman
2013-03-21 14:49                 ` Vivek Goyal
2013-03-22  7:11                   ` HATAYAMA Daisuke
2013-03-21 13:50         ` Vivek Goyal
2013-03-16  4:02 ` [PATCH v3 19/21] vmcore: round-up offset of vmcore object in page-size boundary HATAYAMA Daisuke
2013-03-16  4:02 ` [PATCH v3 20/21] vmcore: count holes generated by round-up operation for vmcore size HATAYAMA Daisuke
2013-03-16  4:02 ` [PATCH v3 21/21] vmcore: introduce mmap_vmcore() HATAYAMA Daisuke
2013-03-19 19:30 ` [PATCH v3 00/21] kdump, vmcore: support mmap() on /proc/vmcore Andrew Morton
2013-03-21  3:52   ` HATAYAMA Daisuke
2013-03-21  6:16     ` Eric W. Biederman
2013-03-21  6:35       ` HATAYAMA Daisuke
2013-03-21  7:14         ` Eric W. Biederman
2013-03-19 23:16 ` Eric W. Biederman

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