Re: [Crash-utility] [RFC] [PATCH 4/6] Maple tree kernel code modification for step 2

This patch will remove all kernel structures, and leave them to be blank for debug purpose. There seems to be a lot of code changes, but most are rewriting struct member resolving into crash way. Signed-off-by: Tao Liu <ltao(a)redhat.com&gt; --- defs.h | 20 +++++- maple_tree.c | 183 ++++++++++++++++++++++++++++++++------------------- maple_tree.h | 92 ++++++-------------------- memory.c | 4 ++ 4 files changed, 159 insertions(+), 140 deletions(-) diff --git a/defs.h b/defs.h index d4be477..8ea710f 100644 --- a/defs.h +++ b/defs.h @@ -1332,7 +1332,6 @@ struct offset_table { /* stash of commonly-used offsets */ long percpu_struct_halt_ra; long percpu_struct_halt_pv; long mm_struct_mmap; - long mm_struct_mm_mt; long mm_struct_pgd; long mm_struct_rss; long mm_struct_anon_rss; @@ -2182,6 +2181,23 @@ struct offset_table { /* stash of commonly-used offsets */ long blk_mq_tags_nr_reserved_tags; long blk_mq_tags_rqs; long request_queue_hctx_table; + + long mm_struct_mm_mt; + long maple_tree_ma_root; + long maple_tree_ma_flags; + long maple_node_parent; + long maple_node_ma64; + long maple_node_mr64; + long maple_node_slot; + long maple_arange_64_parent; + long maple_arange_64_pivot; + long maple_arange_64_slot; + long maple_arange_64_meta; + long maple_range_64_parent; + long maple_range_64_pivot; + long maple_range_64_slot; + long maple_range_64_meta; + long maple_metadata_end; }; struct size_table { /* stash of commonly-used sizes */ @@ -2352,6 +2368,8 @@ struct size_table { /* stash of commonly-used sizes */ long sbitmap_queue; long sbq_wait_state; long blk_mq_tags; + long maple_tree_struct; + long maple_node_struct; }; struct array_table { diff --git a/maple_tree.c b/maple_tree.c index 21a2226..ff07d58 100644 --- a/maple_tree.c +++ b/maple_tree.c @@ -78,10 +78,11 @@ static inline enum maple_type mte_node_type(const struct maple_enode *entry) static inline void *mas_root(struct ma_state *mas) { - struct maple_tree tree; - readmem(mas->tree, KVADDR, &tree, sizeof(tree), + char tree[SIZE(maple_tree_struct)];