diff options
| author | Peter Zijlstra <peterz@infradead.org> | 2020-03-12 10:17:38 +0100 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2020-03-25 18:28:30 +0100 |
| commit | cdb3d057a17d56363a831e486ea39e4c389a6cf9 (patch) | |
| tree | 87c68d4378ff885e3efaba3cbad947f100c1c071 /tools/objtool/elf.h | |
| parent | 513b5ca6b5fbeb766999fb1a4bc9a55c9fb7c9ca (diff) | |
objtool: Optimize find_symbol_by_name()
Perf showed that find_symbol_by_name() takes time; add a symbol name
hash.
This shaves another second off of objtool on vmlinux.o runtime, down
to 15 seconds.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Miroslav Benes <mbenes@suse.cz>
Acked-by: Josh Poimboeuf <jpoimboe@redhat.com>
Link: https://lkml.kernel.org/r/20200324160924.676865656@infradead.org
Diffstat (limited to 'tools/objtool/elf.h')
| -rw-r--r-- | tools/objtool/elf.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/tools/objtool/elf.h b/tools/objtool/elf.h index d18f466829b0..3088d925d640 100644 --- a/tools/objtool/elf.h +++ b/tools/objtool/elf.h @@ -47,6 +47,7 @@ struct symbol { struct list_head list; struct rb_node node; struct hlist_node hash; + struct hlist_node name_hash; GElf_Sym sym; struct section *sec; char *name; @@ -77,6 +78,7 @@ struct elf { char *name; struct list_head sections; DECLARE_HASHTABLE(symbol_hash, 20); + DECLARE_HASHTABLE(symbol_name_hash, 20); DECLARE_HASHTABLE(section_hash, 16); DECLARE_HASHTABLE(section_name_hash, 16); }; |