diff options
| author |   Thomas Weißschuh <linux@weissschuh.net> | 2022-12-27 16:00:59 +0000 |
|---|---|---|
| committer |   Josh Poimboeuf <jpoimboe@kernel.org> | 2023-02-01 09:15:23 -0800 |
| commit | 8045b8f0b17edf375849f83c80dd05194850b6ed (patch) | |
| tree | 24aa73268610f0191db29d47503f49490824edca /tools/objtool/include | |
| parent | objtool: Make struct check_options static (diff) | |
| download | wireguard-linux-8045b8f0b17edf375849f83c80dd05194850b6ed.tar.xz wireguard-linux-8045b8f0b17edf375849f83c80dd05194850b6ed.zip | |
objtool: Allocate multiple structures with calloc()
By using calloc() instead of malloc() in a loop, libc does not have to
keep around bookkeeping information for each single structure.
This reduces maximum memory usage while processing vmlinux.o from
3153325 KB to 3035668 KB (-3.7%) on my notebooks "localmodconfig".
Note this introduces memory leaks, because some additional structs get
added to the lists later after reading the symbols and sections from the
original object. Luckily we don't really care about memory leaks in
objtool.
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Link: https://lore.kernel.org/r/20221216-objtool-memory-v2-3-17968f85a464@weissschuh.net
Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
Diffstat (limited to 'tools/objtool/include')
| -rw-r--r-- | tools/objtool/include/objtool/elf.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/tools/objtool/include/objtool/elf.h b/tools/objtool/include/objtool/elf.h index bb60fd42b46f..1c90f0ac0d53 100644 --- a/tools/objtool/include/objtool/elf.h +++ b/tools/objtool/include/objtool/elf.h @@ -39,6 +39,7 @@ struct section { char *name; int idx; bool changed, text, rodata, noinstr, init, truncate; + struct reloc *reloc_data; }; struct symbol { @@ -104,6 +105,9 @@ struct elf { struct hlist_head *section_hash; struct hlist_head *section_name_hash; struct hlist_head *reloc_hash; + + struct section *section_data; + struct symbol *symbol_data; }; #define OFFSET_STRIDE_BITS 4 |