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| author |   Peter Zijlstra <peterz@infradead.org> | 2021-10-26 14:01:35 +0200 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2021-10-28 23:25:25 +0200 |
| commit | c509331b41b7365e17396c246e8c5797bccc8074 (patch) | |
| tree | 14127a365c021d27be11046391673f0089f6270c /tools/objtool | |
| parent | objtool: Explicitly avoid self modifying code in .altinstr_replacement (diff) | |
| download | linux-dev-c509331b41b7365e17396c246e8c5797bccc8074.tar.xz linux-dev-c509331b41b7365e17396c246e8c5797bccc8074.zip | |
objtool: Shrink struct instruction
Any one instruction can only ever call a single function, therefore
insn->mcount_loc_node is superfluous and can use insn->call_node.
This shrinks struct instruction, which is by far the most numerous
structure objtool creates.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Borislav Petkov <bp@suse.de>
Acked-by: Josh Poimboeuf <jpoimboe@redhat.com>
Tested-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/r/20211026120309.785456706@infradead.org
Diffstat (limited to 'tools/objtool')
| -rw-r--r-- | tools/objtool/check.c | 6 | ||||
| -rw-r--r-- | tools/objtool/include/objtool/check.h | 1 |
2 files changed, 3 insertions, 4 deletions
diff --git a/tools/objtool/check.c b/tools/objtool/check.c index 8ab6f24f8753..ce3c25fec2a6 100644 --- a/tools/objtool/check.c +++ b/tools/objtool/check.c @@ -701,7 +701,7 @@ static int create_mcount_loc_sections(struct objtool_file *file) return 0; idx = 0; - list_for_each_entry(insn, &file->mcount_loc_list, mcount_loc_node) + list_for_each_entry(insn, &file->mcount_loc_list, call_node) idx++; sec = elf_create_section(file->elf, "__mcount_loc", 0, sizeof(unsigned long), idx); @@ -709,7 +709,7 @@ static int create_mcount_loc_sections(struct objtool_file *file) return -1; idx = 0; - list_for_each_entry(insn, &file->mcount_loc_list, mcount_loc_node) { + list_for_each_entry(insn, &file->mcount_loc_list, call_node) { loc = (unsigned long *)sec->data->d_buf + idx; memset(loc, 0, sizeof(unsigned long)); @@ -1051,7 +1051,7 @@ static void annotate_call_site(struct objtool_file *file, insn->type = INSN_NOP; - list_add_tail(&insn->mcount_loc_node, &file->mcount_loc_list); + list_add_tail(&insn->call_node, &file->mcount_loc_list); return; } } diff --git a/tools/objtool/include/objtool/check.h b/tools/objtool/include/objtool/check.h index 07e99c25c7ac..6cfff078897f 100644 --- a/tools/objtool/include/objtool/check.h +++ b/tools/objtool/include/objtool/check.h @@ -40,7 +40,6 @@ struct instruction { struct list_head list; struct hlist_node hash; struct list_head call_node; - struct list_head mcount_loc_node; struct section *sec; unsigned long offset; unsigned int len; |