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| author |   Atsushi Kumagai <kumagai-atsushi@mxc.nes.nec.co.jp> | 2013-04-29 15:07:40 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2013-04-29 15:54:34 -0700 |
| commit | 13ba3fcbbe31068b1ee7c39a0b58ecbed03c4d72 (patch) | |
| tree | 07991835bdf224ec3d4fcc1ce630d4b8c08b1c41 /include/linux/vmalloc.h | |
| parent | mm, vmalloc: remove list management of vmlist after initializing vmalloc (diff) | |
| download | linux-dev-13ba3fcbbe31068b1ee7c39a0b58ecbed03c4d72.tar.xz linux-dev-13ba3fcbbe31068b1ee7c39a0b58ecbed03c4d72.zip | |
kexec, vmalloc: export additional vmalloc layer information
Now, vmap_area_list is exported as VMCOREINFO for makedumpfile to get
the start address of vmalloc region (vmalloc_start). The address which
contains vmalloc_start value is represented as below:
vmap_area_list.next - OFFSET(vmap_area.list) + OFFSET(vmap_area.va_start)
However, both OFFSET(vmap_area.va_start) and OFFSET(vmap_area.list)
aren't exported as VMCOREINFO.
So this patch exports them externally with small cleanup.
[akpm@linux-foundation.org: vmalloc.h should include list.h for list_head]
Signed-off-by: Atsushi Kumagai <kumagai-atsushi@mxc.nes.nec.co.jp>
Cc: Joonsoo Kim <js1304@gmail.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Atsushi Kumagai <kumagai-atsushi@mxc.nes.nec.co.jp>
Cc: Chris Metcalf <cmetcalf@tilera.com>
Cc: Dave Anderson <anderson@redhat.com>
Cc: Eric Biederman <ebiederm@xmission.com>
Cc: Guan Xuetao <gxt@mprc.pku.edu.cn>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/vmalloc.h')
| -rw-r--r-- | include/linux/vmalloc.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/include/linux/vmalloc.h b/include/linux/vmalloc.h index 8a25f9081ed0..7d5773a99f20 100644 --- a/include/linux/vmalloc.h +++ b/include/linux/vmalloc.h @@ -3,7 +3,9 @@ #include <linux/spinlock.h> #include <linux/init.h> +#include <linux/list.h> #include <asm/page.h> /* pgprot_t */ +#include <linux/rbtree.h> struct vm_area_struct; /* vma defining user mapping in mm_types.h */ @@ -35,6 +37,17 @@ struct vm_struct { const void *caller; }; +struct vmap_area { + unsigned long va_start; + unsigned long va_end; + unsigned long flags; + struct rb_node rb_node; /* address sorted rbtree */ + struct list_head list; /* address sorted list */ + struct list_head purge_list; /* "lazy purge" list */ + struct vm_struct *vm; + struct rcu_head rcu_head; +}; + /* * Highlevel APIs for driver use */ |