diff options
| -rw-r--r-- | tools/objtool/check.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/tools/objtool/check.c b/tools/objtool/check.c index 47ff130a9460..8936a05f0e5a 100644 --- a/tools/objtool/check.c +++ b/tools/objtool/check.c @@ -4596,6 +4596,34 @@ static int disas_warned_funcs(struct objtool_file *file) return 0; } +struct insn_chunk { + void *addr; + struct insn_chunk *next; +}; + +/* + * Reduce peak RSS usage by freeing insns memory before writing the ELF file, + * which can trigger more allocations for .debug_* sections whose data hasn't + * been read yet. + */ +static void free_insns(struct objtool_file *file) +{ + struct instruction *insn; + struct insn_chunk *chunks = NULL, *chunk; + + for_each_insn(file, insn) { + if (!insn->idx) { + chunk = malloc(sizeof(*chunk)); + chunk->addr = insn; + chunk->next = chunks; + chunks = chunk; + } + } + + for (chunk = chunks; chunk; chunk = chunk->next) + free(chunk->addr); +} + int check(struct objtool_file *file) { int ret, warnings = 0; @@ -4742,6 +4770,8 @@ int check(struct objtool_file *file) warnings += ret; } + free_insns(file); + if (opts.verbose) disas_warned_funcs(file); |