The following commit has been merged into the objtool/core branch of tip:
Commit-ID: c509331b41b7365e17396c246e8c5797bccc8074
Gitweb: https://git.kernel.org/tip/c509331b41b7365e17396c246e8c5797bccc8074
Author: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
AuthorDate: Tue, 26 Oct 2021 14:01:35 +02:00
Committer: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
CommitterDate: Thu, 28 Oct 2021 23:25:25 +02:00
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@xxxxxxxxxxxxx>
Reviewed-by: Borislav Petkov <bp@xxxxxxx>
Acked-by: Josh Poimboeuf <jpoimboe@xxxxxxxxxx>
Tested-by: Alexei Starovoitov <ast@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20211026120309.785456706@xxxxxxxxxxxxx
---
tools/objtool/check.c | 6 +++---
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 8ab6f24..ce3c25f 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 07e99c2..6cfff07 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;
|