[PATCH v2 06/20] vmcore, procfs: introduce a flag to distinguish objects copied in 2nd kernel

HATAYAMA Daisuke
2013-03-05T07:05:30Z

The part of dump target memory is copied into the 2nd kernel if it
doesn't satisfy mmap()'s page-size boundary requirement. To
distinguish such copied object from usual old memory, a flag
MEM_TYPE_CURRENT_KERNEL is introduced. If this flag is set, the object
is considered being copied into buffer on the 2nd kernel.

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

include/linux/proc_fs.h | 8 +++++++-
1 files changed, 7 insertions(+), 1 deletions(-)

diff --git a/include/linux/proc_fs.h b/include/linux/proc_fs.h
index 8307f2f..11dd592 100644
--- a/include/linux/proc_fs.h
+++ b/include/linux/proc_fs.h
@@ -97,11 +97,17 @@ struct kcore_list {
int type;
};

+#define MEM_TYPE_CURRENT_KERNEL 0x1
+
struct vmcore {
struct list_head list;
- unsigned long long paddr;
+ union {
+ unsigned long long paddr;
+ char *buf;
+ };
unsigned long long size;
loff_t offset;
+ unsigned int flag;
};

#ifdef CONFIG_PROC_FS