From: "tip-bot2 for Josh Poimboeuf" <tip-bot2@linutronix.de>
To: linux-tip-commits@vger.kernel.org
Cc: Josh Poimboeuf <jpoimboe@kernel.org>,
x86@kernel.org, linux-kernel@vger.kernel.org
Subject: [tip: objtool/core] objtool: Remove flags argument from elf_create_section()
Date: Fri, 09 Jun 2023 07:47:38 -0000 [thread overview]
Message-ID: <168629685863.404.11673063766415934535.tip-bot2@tip-bot2> (raw)
In-Reply-To: <515235d9cf62637a14bee37bfa9169ef20065471.1685464332.git.jpoimboe@kernel.org>
The following commit has been merged into the objtool/core branch of tip:
Commit-ID: 2707579dfa615a5dda4aabb92e433f03a87b5ec5
Gitweb: https://git.kernel.org/tip/2707579dfa615a5dda4aabb92e433f03a87b5ec5
Author: Josh Poimboeuf <jpoimboe@kernel.org>
AuthorDate: Tue, 30 May 2023 10:20:54 -07:00
Committer: Josh Poimboeuf <jpoimboe@kernel.org>
CommitterDate: Wed, 07 Jun 2023 10:03:13 -07:00
objtool: Remove flags argument from elf_create_section()
Simplify the elf_create_section() interface a bit by removing the flags
argument. Most callers don't care about changing the section header
flags. If needed, they can be modified afterwards, just like any other
section header field.
Link: https://lore.kernel.org/r/515235d9cf62637a14bee37bfa9169ef20065471.1685464332.git.jpoimboe@kernel.org
Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
---
tools/objtool/check.c | 17 ++++++++++-------
tools/objtool/elf.c | 10 +++++-----
tools/objtool/include/objtool/elf.h | 2 +-
tools/objtool/orc_gen.c | 4 ++--
4 files changed, 18 insertions(+), 15 deletions(-)
diff --git a/tools/objtool/check.c b/tools/objtool/check.c
index b11c25a..eaf6815 100644
--- a/tools/objtool/check.c
+++ b/tools/objtool/check.c
@@ -677,11 +677,14 @@ static int create_static_call_sections(struct objtool_file *file)
list_for_each_entry(insn, &file->static_call_list, call_node)
idx++;
- sec = elf_create_section(file->elf, ".static_call_sites", SHF_WRITE,
+ sec = elf_create_section(file->elf, ".static_call_sites",
sizeof(struct static_call_site), idx);
if (!sec)
return -1;
+ /* Allow modules to set the low bits of static_call_site::key */
+ sec->sh.sh_flags |= SHF_WRITE;
+
idx = 0;
list_for_each_entry(insn, &file->static_call_list, call_node) {
@@ -763,7 +766,7 @@ static int create_retpoline_sites_sections(struct objtool_file *file)
if (!idx)
return 0;
- sec = elf_create_section(file->elf, ".retpoline_sites", 0,
+ sec = elf_create_section(file->elf, ".retpoline_sites",
sizeof(int), idx);
if (!sec) {
WARN("elf_create_section: .retpoline_sites");
@@ -809,7 +812,7 @@ static int create_return_sites_sections(struct objtool_file *file)
if (!idx)
return 0;
- sec = elf_create_section(file->elf, ".return_sites", 0,
+ sec = elf_create_section(file->elf, ".return_sites",
sizeof(int), idx);
if (!sec) {
WARN("elf_create_section: .return_sites");
@@ -861,7 +864,7 @@ static int create_ibt_endbr_seal_sections(struct objtool_file *file)
if (!idx)
return 0;
- sec = elf_create_section(file->elf, ".ibt_endbr_seal", 0,
+ sec = elf_create_section(file->elf, ".ibt_endbr_seal",
sizeof(int), idx);
if (!sec) {
WARN("elf_create_section: .ibt_endbr_seal");
@@ -920,7 +923,7 @@ static int create_cfi_sections(struct objtool_file *file)
idx++;
}
- sec = elf_create_section(file->elf, ".cfi_sites", 0, sizeof(unsigned int), idx);
+ sec = elf_create_section(file->elf, ".cfi_sites", sizeof(unsigned int), idx);
if (!sec)
return -1;
@@ -968,7 +971,7 @@ static int create_mcount_loc_sections(struct objtool_file *file)
list_for_each_entry(insn, &file->mcount_loc_list, call_node)
idx++;
- sec = elf_create_section(file->elf, "__mcount_loc", 0, addrsize, idx);
+ sec = elf_create_section(file->elf, "__mcount_loc", addrsize, idx);
if (!sec)
return -1;
@@ -1013,7 +1016,7 @@ static int create_direct_call_sections(struct objtool_file *file)
list_for_each_entry(insn, &file->call_list, call_node)
idx++;
- sec = elf_create_section(file->elf, ".call_sites", 0, sizeof(unsigned int), idx);
+ sec = elf_create_section(file->elf, ".call_sites", sizeof(unsigned int), idx);
if (!sec)
return -1;
diff --git a/tools/objtool/elf.c b/tools/objtool/elf.c
index 500e929..7598c0a 100644
--- a/tools/objtool/elf.c
+++ b/tools/objtool/elf.c
@@ -1059,7 +1059,7 @@ static int elf_add_string(struct elf *elf, struct section *strtab, char *str)
}
struct section *elf_create_section(struct elf *elf, const char *name,
- unsigned int sh_flags, size_t entsize, int nr)
+ size_t entsize, int nr)
{
struct section *sec, *shstrtab;
size_t size = entsize * nr;
@@ -1117,7 +1117,7 @@ struct section *elf_create_section(struct elf *elf, const char *name,
sec->sh.sh_entsize = entsize;
sec->sh.sh_type = SHT_PROGBITS;
sec->sh.sh_addralign = 1;
- sec->sh.sh_flags = SHF_ALLOC | sh_flags;
+ sec->sh.sh_flags = SHF_ALLOC;
/* Add section name to .shstrtab (or .strtab for Clang) */
shstrtab = find_section_by_name(elf, ".shstrtab");
@@ -1153,7 +1153,7 @@ static struct section *elf_create_rel_reloc_section(struct elf *elf, struct sect
strcpy(relocname, ".rel");
strcat(relocname, base->name);
- sec = elf_create_section(elf, relocname, 0, sizeof(GElf_Rel), 0);
+ sec = elf_create_section(elf, relocname, sizeof(GElf_Rel), 0);
free(relocname);
if (!sec)
return NULL;
@@ -1185,9 +1185,9 @@ static struct section *elf_create_rela_reloc_section(struct elf *elf, struct sec
strcat(relocname, base->name);
if (addrsize == sizeof(u32))
- sec = elf_create_section(elf, relocname, 0, sizeof(Elf32_Rela), 0);
+ sec = elf_create_section(elf, relocname, sizeof(Elf32_Rela), 0);
else
- sec = elf_create_section(elf, relocname, 0, sizeof(GElf_Rela), 0);
+ sec = elf_create_section(elf, relocname, sizeof(GElf_Rela), 0);
free(relocname);
if (!sec)
return NULL;
diff --git a/tools/objtool/include/objtool/elf.h b/tools/objtool/include/objtool/elf.h
index b24f83e..2c28aee 100644
--- a/tools/objtool/include/objtool/elf.h
+++ b/tools/objtool/include/objtool/elf.h
@@ -109,7 +109,7 @@ struct elf {
};
struct elf *elf_open_read(const char *name, int flags);
-struct section *elf_create_section(struct elf *elf, const char *name, unsigned int sh_flags, size_t entsize, int nr);
+struct section *elf_create_section(struct elf *elf, const char *name, size_t entsize, int nr);
struct symbol *elf_create_prefix_symbol(struct elf *elf, struct symbol *orig, long size);
diff --git a/tools/objtool/orc_gen.c b/tools/objtool/orc_gen.c
index 48efd1e..d5f750b 100644
--- a/tools/objtool/orc_gen.c
+++ b/tools/objtool/orc_gen.c
@@ -237,12 +237,12 @@ int orc_create(struct objtool_file *file)
WARN("file already has .orc_unwind section, skipping");
return -1;
}
- orc_sec = elf_create_section(file->elf, ".orc_unwind", 0,
+ orc_sec = elf_create_section(file->elf, ".orc_unwind",
sizeof(struct orc_entry), nr);
if (!orc_sec)
return -1;
- sec = elf_create_section(file->elf, ".orc_unwind_ip", 0, sizeof(int), nr);
+ sec = elf_create_section(file->elf, ".orc_unwind_ip", sizeof(int), nr);
if (!sec)
return -1;
next prev parent reply other threads:[~2023-06-09 7:50 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-05-30 17:20 [PATCH 00/22] objtool: Reduce memory usage with CONFIG_DEBUG_INFO Josh Poimboeuf
2023-05-30 17:20 ` [PATCH 01/22] objtool: Tidy elf.h Josh Poimboeuf
2023-06-09 7:47 ` [tip: objtool/core] " tip-bot2 for Josh Poimboeuf
2023-05-30 17:20 ` [PATCH 02/22] objtool: Remove flags argument from elf_create_section() Josh Poimboeuf
2023-06-09 7:47 ` tip-bot2 for Josh Poimboeuf [this message]
2023-05-30 17:20 ` [PATCH 03/22] objtool: Improve reloc naming Josh Poimboeuf
2023-06-09 7:47 ` [tip: objtool/core] " tip-bot2 for Josh Poimboeuf
2023-05-30 17:20 ` [PATCH 04/22] objtool: Consolidate rel/rela handling Josh Poimboeuf
2023-06-09 7:47 ` [tip: objtool/core] " tip-bot2 for Josh Poimboeuf
2023-05-30 17:20 ` [PATCH 05/22] objtool: Fix reloc_hash size Josh Poimboeuf
2023-06-09 7:47 ` [tip: objtool/core] " tip-bot2 for Josh Poimboeuf
2023-05-30 17:20 ` [PATCH 06/22] objtool: Add mark_sec_changed() Josh Poimboeuf
2023-06-09 7:47 ` [tip: objtool/core] " tip-bot2 for Josh Poimboeuf
2023-05-30 17:20 ` [PATCH 07/22] objtool: Add elf_create_section_pair() Josh Poimboeuf
2023-06-09 7:47 ` [tip: objtool/core] " tip-bot2 for Josh Poimboeuf
2023-05-30 17:21 ` [PATCH 08/22] objtool: Keep GElf_Rel[a] structs synced Josh Poimboeuf
2023-06-09 7:47 ` [tip: objtool/core] " tip-bot2 for Josh Poimboeuf
2023-05-30 17:21 ` [PATCH 09/22] objtool: Don't free memory in elf_close() Josh Poimboeuf
2023-06-09 7:47 ` [tip: objtool/core] " tip-bot2 for Josh Poimboeuf
2023-05-30 17:21 ` [PATCH 10/22] objtool: Add for_each_reloc() Josh Poimboeuf
2023-06-09 7:47 ` [tip: objtool/core] " tip-bot2 for Josh Poimboeuf
2023-05-30 17:21 ` [PATCH 11/22] objtool: Allocate relocs in advance for new rela sections Josh Poimboeuf
2023-06-09 7:47 ` [tip: objtool/core] " tip-bot2 for Josh Poimboeuf
2023-05-30 17:21 ` [PATCH 12/22] objtool: Get rid of reloc->list Josh Poimboeuf
2023-06-09 7:47 ` [tip: objtool/core] " tip-bot2 for Josh Poimboeuf
2023-05-30 17:21 ` [PATCH 13/22] objtool: Get rid of reloc->idx Josh Poimboeuf
2023-06-09 7:47 ` [tip: objtool/core] " tip-bot2 for Josh Poimboeuf
2023-05-30 17:21 ` [PATCH 14/22] objtool: Get rid of reloc->offset Josh Poimboeuf
2023-06-09 7:47 ` [tip: objtool/core] " tip-bot2 for Josh Poimboeuf
2023-05-30 17:21 ` [PATCH 15/22] objtool: Get rid of reloc->type Josh Poimboeuf
2023-06-09 7:47 ` [tip: objtool/core] " tip-bot2 for Josh Poimboeuf
2023-05-30 17:21 ` [PATCH 16/22] objtool: Get rid of reloc->addend Josh Poimboeuf
2023-06-09 7:47 ` [tip: objtool/core] " tip-bot2 for Josh Poimboeuf
2023-05-30 17:21 ` [PATCH 17/22] objtool: Get rid of reloc->jump_table_start Josh Poimboeuf
2023-06-09 7:47 ` [tip: objtool/core] " tip-bot2 for Josh Poimboeuf
2023-05-30 17:21 ` [PATCH 18/22] objtool: Shrink reloc->sym_reloc_entry Josh Poimboeuf
2023-06-09 7:47 ` [tip: objtool/core] " tip-bot2 for Josh Poimboeuf
2023-05-30 17:21 ` [PATCH 19/22] objtool: Shrink elf hash nodes Josh Poimboeuf
2023-06-09 7:47 ` [tip: objtool/core] " tip-bot2 for Josh Poimboeuf
2023-05-30 17:21 ` [PATCH 20/22] objtool: Get rid of reloc->rel[a] Josh Poimboeuf
2023-06-09 7:47 ` [tip: objtool/core] " tip-bot2 for Josh Poimboeuf
2023-05-30 17:21 ` [PATCH 21/22] objtool: Free insns when done Josh Poimboeuf
2023-06-09 7:47 ` [tip: objtool/core] " tip-bot2 for Josh Poimboeuf
2023-05-30 17:21 ` [PATCH 22/22] objtool: Skip reading DWARF section data Josh Poimboeuf
2023-06-09 7:47 ` [tip: objtool/core] " tip-bot2 for Josh Poimboeuf
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