From: Atsushi Kumagai <kumagai-atsushi@xxxxxxxxxxxxxxxxx>
Date: Thu, 14 Mar 2013 11:08:57 +0900
Subject: [PATCH 1/4] Introduce new symbols to look at the first vmap_area.
struct vmlist which we used to get vmalloc_start value will be
removed from kernel soon, so we have to look at the first vmap_area
in the sorted vmap_area_list instead of vmlist.
The address which contains vmalloc_start value is represented as
below:
vmap_area_list.next - OFFSET(vmap_area.list) + OFFSET(vmap_area.va_start)
This patch introduces these symbols.
Signed-off-by: Atsushi Kumagai <kumagai-atsushi at mxc.nes.nec.co.jp>
---
makedumpfile.c | 9 +++++++++
makedumpfile.h | 5 +++++
2 files changed, 14 insertions(+)
diff --git a/makedumpfile.c b/makedumpfile.c
index 6de0581..9cf907c 100644
--- a/makedumpfile.c
+++ b/makedumpfile.c
@@ -854,6 +854,7 @@ get_symbol_info(void)
SYMBOL_INIT(swapper_pg_dir, "swapper_pg_dir");
SYMBOL_INIT(init_level4_pgt, "init_level4_pgt");
SYMBOL_INIT(vmlist, "vmlist");
+ SYMBOL_INIT(vmap_area_list, "vmap_area_list");
SYMBOL_INIT(phys_base, "phys_base");
SYMBOL_INIT(node_online_map, "node_online_map");
SYMBOL_INIT(node_states, "node_states");
@@ -989,6 +990,8 @@ get_structure_info(void)
OFFSET_INIT(node_memblk_s.nid, "node_memblk_s", "nid");
OFFSET_INIT(vm_struct.addr, "vm_struct", "addr");
+ OFFSET_INIT(vmap_area.va_start, "vmap_area", "va_start");
+ OFFSET_INIT(vmap_area.list, "vmap_area", "list");
/*
* Get offset of the module members.
@@ -1368,6 +1371,7 @@ write_vmcoreinfo_data(void)
WRITE_SYMBOL("swapper_pg_dir", swapper_pg_dir);
WRITE_SYMBOL("init_level4_pgt", init_level4_pgt);
WRITE_SYMBOL("vmlist", vmlist);
+ WRITE_SYMBOL("vmap_area_list", vmap_area_list);
WRITE_SYMBOL("phys_base", phys_base);
WRITE_SYMBOL("node_online_map", node_online_map);
WRITE_SYMBOL("node_states", node_states);
@@ -1430,6 +1434,8 @@ write_vmcoreinfo_data(void)
WRITE_MEMBER_OFFSET("node_memblk_s.size", node_memblk_s.size);
WRITE_MEMBER_OFFSET("node_memblk_s.nid", node_memblk_s.nid);
WRITE_MEMBER_OFFSET("vm_struct.addr", vm_struct.addr);
+ WRITE_MEMBER_OFFSET("vmap_area.va_start", vmap_area.va_start);
+ WRITE_MEMBER_OFFSET("vmap_area.list", vmap_area.list);
WRITE_MEMBER_OFFSET("log.ts_nsec", log.ts_nsec);
WRITE_MEMBER_OFFSET("log.len", log.len);
WRITE_MEMBER_OFFSET("log.text_len", log.text_len);
@@ -1684,6 +1690,7 @@ read_vmcoreinfo(void)
READ_SYMBOL("swapper_pg_dir", swapper_pg_dir);
READ_SYMBOL("init_level4_pgt", init_level4_pgt);
READ_SYMBOL("vmlist", vmlist);
+ READ_SYMBOL("vmap_area_list", vmap_area_list);
READ_SYMBOL("phys_base", phys_base);
READ_SYMBOL("node_online_map", node_online_map);
READ_SYMBOL("node_states", node_states);
@@ -1739,6 +1746,8 @@ read_vmcoreinfo(void)
READ_MEMBER_OFFSET("node_memblk_s.size", node_memblk_s.size);
READ_MEMBER_OFFSET("node_memblk_s.nid", node_memblk_s.nid);
READ_MEMBER_OFFSET("vm_struct.addr", vm_struct.addr);
+ READ_MEMBER_OFFSET("vmap_area.va_start", vmap_area.va_start);
+ READ_MEMBER_OFFSET("vmap_area.list", vmap_area.list);
READ_MEMBER_OFFSET("log.ts_nsec", log.ts_nsec);
READ_MEMBER_OFFSET("log.len", log.len);
READ_MEMBER_OFFSET("log.text_len", log.text_len);
diff --git a/makedumpfile.h b/makedumpfile.h
index de329f3..36cb9fd 100644
--- a/makedumpfile.h
+++ b/makedumpfile.h
@@ -1096,6 +1096,7 @@ struct symbol_table {
unsigned long long swapper_pg_dir;
unsigned long long init_level4_pgt;
unsigned long long vmlist;
+ unsigned long long vmap_area_list;
unsigned long long phys_base;
unsigned long long node_online_map;
unsigned long long node_states;
@@ -1233,6 +1234,10 @@ struct offset_table {
struct vm_struct {
long addr;
} vm_struct;
+ struct vmap_area {
+ long va_start;
+ long list;
+ } vmap_area;
/*
* for Xen extraction
--
1.8.0.2
