diff options
| author | Peter Zijlstra <peterz@infradead.org> | 2020-03-12 11:23:36 +0100 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2020-03-25 18:28:30 +0100 |
| commit | 8b5fa6bc326bf02f293b5a39a8f5b3de816265d3 (patch) | |
| tree | 11121ed0c5015841e16a84207a1bf80a31f09dfb /kernel/locking/mutex-debug.c | |
| parent | cdb3d057a17d56363a831e486ea39e4c389a6cf9 (diff) | |
| download | linux-8b5fa6bc326bf02f293b5a39a8f5b3de816265d3.tar.bz2 | |
objtool: Optimize read_sections()
Perf showed that __hash_init() is a significant portion of
read_sections(), so instead of doing a per section rela_hash, use an
elf-wide rela_hash.
Statistics show us there are about 1.1 million relas, so size it
accordingly.
This reduces the objtool on vmlinux.o runtime to a third, from 15 to 5
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/20200324160924.739153726@infradead.org
Diffstat (limited to 'kernel/locking/mutex-debug.c')
0 files changed, 0 insertions, 0 deletions