From: Atsushi Kumagai <[email protected]> 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 <[email protected]> --- 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 _______________________________________________ kexec mailing list [email protected] http://lists.infradead.org/mailman/listinfo/kexec
