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From: Josh Poimboeuf <jpoimboe@kernel.org>
To: x86@kernel.org
Cc: linux-kernel@vger.kernel.org, Petr Mladek <pmladek@suse.com>,
	Miroslav Benes <mbenes@suse.cz>,
	Joe Lawrence <joe.lawrence@redhat.com>,
	live-patching@vger.kernel.org, Song Liu <song@kernel.org>,
	laokz <laokz@foxmail.com>, Jiri Kosina <jikos@kernel.org>,
	Marcos Paulo de Souza <mpdesouza@suse.com>,
	Weinan Liu <wnliu@google.com>,
	Fazla Mehrab <a.mehrab@bytedance.com>,
	Chen Zhongjin <chenzhongjin@huawei.com>,
	Puranjay Mohan <puranjay@kernel.org>,
	Dylan Hatch <dylanbhatch@google.com>,
	Peter Zijlstra <peterz@infradead.org>
Subject: [PATCH v4 24/63] objtool: Const string cleanup
Date: Wed, 17 Sep 2025 09:03:32 -0700	[thread overview]
Message-ID: <0c4bf64e8c5bfcc9ffb1f6bcfdb7db66596aee4b.1758067943.git.jpoimboe@kernel.org> (raw)
In-Reply-To: <cover.1758067942.git.jpoimboe@kernel.org>

Use 'const char *' where applicable.

Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
---
 tools/objtool/arch/loongarch/decode.c | 2 +-
 tools/objtool/arch/powerpc/decode.c   | 2 +-
 tools/objtool/arch/x86/decode.c       | 2 +-
 tools/objtool/elf.c                   | 6 +++---
 tools/objtool/include/objtool/arch.h  | 2 +-
 tools/objtool/include/objtool/elf.h   | 6 +++---
 6 files changed, 10 insertions(+), 10 deletions(-)

diff --git a/tools/objtool/arch/loongarch/decode.c b/tools/objtool/arch/loongarch/decode.c
index 330671d88c590..7b38718d782a7 100644
--- a/tools/objtool/arch/loongarch/decode.c
+++ b/tools/objtool/arch/loongarch/decode.c
@@ -7,7 +7,7 @@
 #include <linux/objtool_types.h>
 #include <arch/elf.h>
 
-int arch_ftrace_match(char *name)
+int arch_ftrace_match(const char *name)
 {
 	return !strcmp(name, "_mcount");
 }
diff --git a/tools/objtool/arch/powerpc/decode.c b/tools/objtool/arch/powerpc/decode.c
index 9b17885e6cba6..d4cb02120a6bd 100644
--- a/tools/objtool/arch/powerpc/decode.c
+++ b/tools/objtool/arch/powerpc/decode.c
@@ -9,7 +9,7 @@
 #include <objtool/builtin.h>
 #include <objtool/endianness.h>
 
-int arch_ftrace_match(char *name)
+int arch_ftrace_match(const char *name)
 {
 	return !strcmp(name, "_mcount");
 }
diff --git a/tools/objtool/arch/x86/decode.c b/tools/objtool/arch/x86/decode.c
index b10200cc50c99..6bb46d9981533 100644
--- a/tools/objtool/arch/x86/decode.c
+++ b/tools/objtool/arch/x86/decode.c
@@ -23,7 +23,7 @@
 #include <objtool/builtin.h>
 #include <arch/elf.h>
 
-int arch_ftrace_match(char *name)
+int arch_ftrace_match(const char *name)
 {
 	return !strcmp(name, "__fentry__");
 }
diff --git a/tools/objtool/elf.c b/tools/objtool/elf.c
index d7fb3d0b05cf1..2ea6d591c3c29 100644
--- a/tools/objtool/elf.c
+++ b/tools/objtool/elf.c
@@ -853,7 +853,7 @@ elf_create_section_symbol(struct elf *elf, struct section *sec)
 	return sym;
 }
 
-static int elf_add_string(struct elf *elf, struct section *strtab, char *str);
+static int elf_add_string(struct elf *elf, struct section *strtab, const char *str);
 
 struct symbol *
 elf_create_prefix_symbol(struct elf *elf, struct symbol *orig, long size)
@@ -1086,7 +1086,7 @@ struct elf *elf_open_read(const char *name, int flags)
 	return NULL;
 }
 
-static int elf_add_string(struct elf *elf, struct section *strtab, char *str)
+static int elf_add_string(struct elf *elf, struct section *strtab, const char *str)
 {
 	Elf_Data *data;
 	Elf_Scn *s;
@@ -1111,7 +1111,7 @@ static int elf_add_string(struct elf *elf, struct section *strtab, char *str)
 		return -1;
 	}
 
-	data->d_buf = str;
+	data->d_buf = strdup(str);
 	data->d_size = strlen(str) + 1;
 	data->d_align = 1;
 
diff --git a/tools/objtool/include/objtool/arch.h b/tools/objtool/include/objtool/arch.h
index 68664625a4671..a4502947307a4 100644
--- a/tools/objtool/include/objtool/arch.h
+++ b/tools/objtool/include/objtool/arch.h
@@ -71,7 +71,7 @@ struct stack_op {
 
 struct instruction;
 
-int arch_ftrace_match(char *name);
+int arch_ftrace_match(const char *name);
 
 void arch_initial_func_cfi_state(struct cfi_init_state *state);
 
diff --git a/tools/objtool/include/objtool/elf.h b/tools/objtool/include/objtool/elf.h
index df8434d3b7440..74ce454790f4d 100644
--- a/tools/objtool/include/objtool/elf.h
+++ b/tools/objtool/include/objtool/elf.h
@@ -40,7 +40,7 @@ struct section {
 	struct section *base, *rsec;
 	struct symbol *sym;
 	Elf_Data *data;
-	char *name;
+	const char *name;
 	int idx;
 	bool _changed, text, rodata, noinstr, init, truncate;
 	struct reloc *relocs;
@@ -53,7 +53,7 @@ struct symbol {
 	struct elf_hash_node name_hash;
 	GElf_Sym sym;
 	struct section *sec;
-	char *name;
+	const char *name;
 	unsigned int idx, len;
 	unsigned long offset;
 	unsigned long __subtree_last;
@@ -88,7 +88,7 @@ struct elf {
 	GElf_Ehdr ehdr;
 	int fd;
 	bool changed;
-	char *name;
+	const char *name;
 	unsigned int num_files;
 	struct list_head sections;
 	unsigned long num_relocs;
-- 
2.50.0


  parent reply	other threads:[~2025-09-17 16:04 UTC|newest]

Thread overview: 93+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-09-17 16:03 [PATCH v4 00/63] objtool,livepatch: klp-build livepatch module generation Josh Poimboeuf
2025-09-17 16:03 ` [PATCH v4 01/63] s390/vmlinux.lds.S: Prevent thunk functions from getting placed with normal text Josh Poimboeuf
2025-09-17 16:03 ` [PATCH v4 02/63] vmlinux.lds: Unify TEXT_MAIN, DATA_MAIN, and related macros Josh Poimboeuf
2025-12-20 16:25   ` Carlos Llamas
2026-01-06 22:46     ` Will Deacon
2026-01-08 21:59       ` Carlos Llamas
2025-09-17 16:03 ` [PATCH v4 03/63] x86/module: Improve relocation error messages Josh Poimboeuf
2025-09-17 16:03 ` [PATCH v4 04/63] x86/kprobes: Remove STACK_FRAME_NON_STANDARD annotation Josh Poimboeuf
2025-09-17 16:03 ` [PATCH v4 05/63] compiler: Tweak __UNIQUE_ID() naming Josh Poimboeuf
2025-09-17 16:03 ` [PATCH v4 06/63] compiler.h: Make addressable symbols less of an eyesore Josh Poimboeuf
2025-09-17 16:03 ` [PATCH v4 07/63] elfnote: Change ELFNOTE() to use __UNIQUE_ID() Josh Poimboeuf
2025-09-17 16:03 ` [PATCH v4 08/63] kbuild: Remove 'kmod_' prefix from __KBUILD_MODNAME Josh Poimboeuf
2025-10-20 12:20   ` Alexander Stein
2025-10-20 17:22     ` Josh Poimboeuf
2025-10-22  9:53       ` Anders Roxell
     [not found]   ` <CGME20251020130001eucas1p259c59daada89ad0fece76b7a86581f0e@eucas1p2.samsung.com>
2025-10-20 12:59     ` Marek Szyprowski
2025-10-20 16:34   ` Mark Brown
2025-10-20 16:37   ` Cosmin Tanislav
2025-09-17 16:03 ` [PATCH v4 09/63] modpost: Ignore unresolved section bounds symbols Josh Poimboeuf
2025-09-17 16:03 ` [PATCH v4 10/63] x86/alternative: Refactor INT3 call emulation selftest Josh Poimboeuf
2025-09-17 16:03 ` [PATCH v4 11/63] interval_tree: Sync interval_tree_generic.h with tools Josh Poimboeuf
2025-09-17 16:03 ` [PATCH v4 12/63] interval_tree: Fix ITSTATIC usage for *_subtree_search() Josh Poimboeuf
2025-09-18 16:30   ` [PATCH v4.1 " Josh Poimboeuf
2025-09-17 16:03 ` [PATCH v4 13/63] objtool: Make find_symbol_containing() less arbitrary Josh Poimboeuf
2025-09-17 16:03 ` [PATCH v4 14/63] objtool: Fix broken error handling in read_symbols() Josh Poimboeuf
2025-09-17 16:03 ` [PATCH v4 15/63] objtool: Propagate elf_truncate_section() error in elf_write() Josh Poimboeuf
2025-09-17 16:03 ` [PATCH v4 16/63] objtool: Remove error handling boilerplate Josh Poimboeuf
2025-09-17 16:03 ` [PATCH v4 17/63] objtool: Add empty symbols to the symbol tree again Josh Poimboeuf
2025-09-17 16:03 ` [PATCH v4 18/63] objtool: Fix interval tree insertion for zero-length symbols Josh Poimboeuf
2025-09-17 16:03 ` [PATCH v4 19/63] objtool: Fix weak symbol detection Josh Poimboeuf
2025-09-17 16:03 ` [PATCH v4 20/63] objtool: Fix x86 addend calculation Josh Poimboeuf
2025-09-17 16:03 ` [PATCH v4 21/63] objtool: Fix __pa_symbol() relocation handling Josh Poimboeuf
2025-09-17 16:03 ` [PATCH v4 22/63] objtool: Fix "unexpected end of section" warning for alternatives Josh Poimboeuf
2025-09-17 16:03 ` [PATCH v4 23/63] objtool: Check for missing annotation entries in read_annotate() Josh Poimboeuf
2025-09-17 16:03 ` Josh Poimboeuf [this message]
2025-09-17 16:03 ` [PATCH v4 25/63] objtool: Clean up compiler flag usage Josh Poimboeuf
2025-09-17 16:03 ` [PATCH v4 26/63] objtool: Remove .parainstructions reference Josh Poimboeuf
2025-09-17 16:03 ` [PATCH v4 27/63] objtool: Convert elf iterator macros to use 'struct elf' Josh Poimboeuf
2025-09-17 16:03 ` [PATCH v4 28/63] objtool: Add section/symbol type helpers Josh Poimboeuf
2025-09-17 16:03 ` [PATCH v4 29/63] objtool: Mark .cold subfunctions Josh Poimboeuf
2025-09-17 16:03 ` [PATCH v4 30/63] objtool: Fix weak symbol hole detection for .cold functions Josh Poimboeuf
2025-09-17 16:03 ` [PATCH v4 31/63] objtool: Mark prefix functions Josh Poimboeuf
2025-09-17 16:03 ` [PATCH v4 32/63] objtool: Simplify reloc offset calculation in unwind_read_hints() Josh Poimboeuf
2025-09-17 16:03 ` [PATCH v4 33/63] objtool: Avoid emptying lists for duplicate sections Josh Poimboeuf
2025-09-17 16:03 ` [PATCH v4 34/63] objtool: Rename --Werror to --werror Josh Poimboeuf
2025-09-17 16:03 ` [PATCH v4 35/63] objtool: Resurrect --backup option Josh Poimboeuf
2025-09-17 16:03 ` [PATCH v4 36/63] objtool: Reindent check_options[] Josh Poimboeuf
2025-09-17 16:03 ` [PATCH v4 37/63] objtool: Refactor add_jump_destinations() Josh Poimboeuf
2025-09-17 16:03 ` [PATCH v4 38/63] objtool: Simplify special symbol handling in elf_update_symbol() Josh Poimboeuf
2025-09-17 16:03 ` [PATCH v4 39/63] objtool: Generalize elf_create_symbol() Josh Poimboeuf
2025-09-17 16:03 ` [PATCH v4 40/63] objtool: Generalize elf_create_section() Josh Poimboeuf
2025-09-17 16:03 ` [PATCH v4 41/63] objtool: Add elf_create_data() Josh Poimboeuf
2025-09-17 16:03 ` [PATCH v4 42/63] objtool: Add elf_create_reloc() and elf_init_reloc() Josh Poimboeuf
2025-09-17 16:03 ` [PATCH v4 43/63] objtool: Add elf_create_file() Josh Poimboeuf
2025-09-17 16:03 ` [PATCH v4 44/63] objtool: Add annotype() helper Josh Poimboeuf
2025-09-17 16:03 ` [PATCH v4 45/63] objtool: Move ANNOTATE* macros to annotate.h Josh Poimboeuf
2025-09-17 16:03 ` [PATCH v4 46/63] objtool: Add ANNOTATE_DATA_SPECIAL Josh Poimboeuf
2025-09-17 16:03 ` [PATCH v4 47/63] x86/asm: Annotate special section entries Josh Poimboeuf
2025-09-17 16:03 ` [PATCH v4 48/63] objtool: Unify STACK_FRAME_NON_STANDARD entry sizes Josh Poimboeuf
2025-09-17 16:03 ` [PATCH v4 49/63] objtool/klp: Add --checksum option to generate per-function checksums Josh Poimboeuf
2025-10-27  1:19   ` Michael Kelley
2025-10-27 22:22     ` Josh Poimboeuf
2025-11-05 15:22       ` Michael Kelley
2025-11-11 20:09         ` Josh Poimboeuf
2025-11-12  1:39           ` Michael Kelley
2025-11-12  2:26             ` Michael Kelley
2025-11-12  4:04               ` Josh Poimboeuf
2025-11-12  4:32                 ` Michael Kelley
2025-11-12 13:25                   ` David Laight
2025-11-12 16:16                     ` Josh Poimboeuf
2025-11-12 21:39                       ` David Laight
2025-09-17 16:03 ` [PATCH v4 50/63] objtool/klp: Add --debug-checksum=<funcs> to show per-instruction checksums Josh Poimboeuf
2025-09-17 16:03 ` [PATCH v4 51/63] objtool/klp: Introduce klp diff subcommand for diffing object files Josh Poimboeuf
2025-10-08 14:01   ` Petr Mladek
2025-10-08 15:27     ` Josh Poimboeuf
2025-10-09 12:29       ` Petr Mladek
2025-10-09 23:19         ` Josh Poimboeuf
2025-09-17 16:04 ` [PATCH v4 52/63] objtool/klp: Add --debug option to show cloning decisions Josh Poimboeuf
2025-09-17 16:04 ` [PATCH v4 53/63] objtool/klp: Add post-link subcommand to finalize livepatch modules Josh Poimboeuf
2025-09-17 16:04 ` [PATCH v4 54/63] objtool: Refactor prefix symbol creation code Josh Poimboeuf
2025-09-17 16:04 ` [PATCH v4 55/63] objtool: Add base objtool support for livepatch modules Josh Poimboeuf
2025-09-17 16:04 ` [PATCH v4 56/63] livepatch: Add CONFIG_KLP_BUILD Josh Poimboeuf
2025-09-17 16:04 ` [PATCH v4 57/63] kbuild,objtool: Defer objtool validation step for CONFIG_KLP_BUILD Josh Poimboeuf
2025-09-17 16:04 ` [PATCH v4 58/63] livepatch/klp-build: Introduce fix-patch-lines script to avoid __LINE__ diff noise Josh Poimboeuf
2025-09-17 16:04 ` [PATCH v4 59/63] livepatch/klp-build: Add stub init code for livepatch modules Josh Poimboeuf
2025-09-17 16:04 ` [PATCH v4 60/63] livepatch/klp-build: Introduce klp-build script for generating " Josh Poimboeuf
2025-09-17 16:04 ` [PATCH v4 61/63] livepatch/klp-build: Add --debug option to show cloning decisions Josh Poimboeuf
2025-09-17 16:04 ` [PATCH v4 62/63] livepatch/klp-build: Add --show-first-changed option to show function divergence Josh Poimboeuf
2025-09-17 16:04 ` [PATCH v4 63/63] livepatch: Introduce source code helpers for livepatch modules Josh Poimboeuf
2025-09-18 16:32 ` [PATCH v4 00/63] objtool,livepatch: klp-build livepatch module generation Josh Poimboeuf
2025-10-07 17:38 ` Joe Lawrence
2025-10-10  7:30 ` Petr Mladek
2025-10-11  0:54   ` Josh Poimboeuf

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