From: Masahiro Yamada <masahiroy@kernel.org>
To: linux-kbuild@vger.kernel.org
Cc: linux-kernel@vger.kernel.org,
Masahiro Yamada <masahiroy@kernel.org>,
Arnd Bergmann <arnd@arndb.de>,
Nathan Chancellor <nathan@kernel.org>,
Nick Desaulniers <ndesaulniers@google.com>,
Nicolas Schier <nicolas@fjasle.eu>,
linux-arch@vger.kernel.org
Subject: [PATCH 02/10] linux/init: remove __memexit* annotations
Date: Mon, 23 Oct 2023 02:06:05 +0900 [thread overview]
Message-ID: <20231022170613.2072838-2-masahiroy@kernel.org> (raw)
In-Reply-To: <20231022170613.2072838-1-masahiroy@kernel.org>
We have never used __memexit, __memexitdata, or __memexitconst.
These were unneeded.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
---
include/asm-generic/vmlinux.lds.h | 6 ------
include/linux/init.h | 3 ---
scripts/mod/modpost.c | 15 +++------------
3 files changed, 3 insertions(+), 21 deletions(-)
diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
index 67d8dd2f1bde..bae0fe4d499b 100644
--- a/include/asm-generic/vmlinux.lds.h
+++ b/include/asm-generic/vmlinux.lds.h
@@ -356,7 +356,6 @@
*(.ref.data) \
*(.data..shared_aligned) /* percpu related */ \
MEM_KEEP(init.data*) \
- MEM_KEEP(exit.data*) \
*(.data.unlikely) \
__start_once = .; \
*(.data.once) \
@@ -521,7 +520,6 @@
__init_rodata : AT(ADDR(__init_rodata) - LOAD_OFFSET) { \
*(.ref.rodata) \
MEM_KEEP(init.rodata) \
- MEM_KEEP(exit.rodata) \
} \
\
/* Built-in module parameters. */ \
@@ -574,7 +572,6 @@
*(.ref.text) \
*(.text.asan.* .text.tsan.*) \
MEM_KEEP(init.text*) \
- MEM_KEEP(exit.text*) \
/* sched.text is aling to function alignment to secure we have same
@@ -714,13 +711,10 @@
*(.exit.data .exit.data.*) \
*(.fini_array .fini_array.*) \
*(.dtors .dtors.*) \
- MEM_DISCARD(exit.data*) \
- MEM_DISCARD(exit.rodata*)
#define EXIT_TEXT \
*(.exit.text) \
*(.text.exit) \
- MEM_DISCARD(exit.text)
#define EXIT_CALL \
*(.exitcall.exit)
diff --git a/include/linux/init.h b/include/linux/init.h
index 266c3e1640d4..01b52c9c7526 100644
--- a/include/linux/init.h
+++ b/include/linux/init.h
@@ -89,9 +89,6 @@
__latent_entropy
#define __meminitdata __section(".meminit.data")
#define __meminitconst __section(".meminit.rodata")
-#define __memexit __section(".memexit.text") __exitused __cold notrace
-#define __memexitdata __section(".memexit.data")
-#define __memexitconst __section(".memexit.rodata")
/* For assembly routines */
#define __HEAD .section ".head.text","ax"
diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
index d936fa5fbbb1..bcc334b28a2c 100644
--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@@ -798,7 +798,7 @@ static void check_section(const char *modname, struct elf_info *elf,
#define ALL_INIT_TEXT_SECTIONS \
".init.text", ".meminit.text"
#define ALL_EXIT_TEXT_SECTIONS \
- ".exit.text", ".memexit.text"
+ ".exit.text"
#define ALL_PCI_INIT_SECTIONS \
".pci_fixup_early", ".pci_fixup_header", ".pci_fixup_final", \
@@ -806,10 +806,9 @@ static void check_section(const char *modname, struct elf_info *elf,
".pci_fixup_resume_early", ".pci_fixup_suspend"
#define ALL_XXXINIT_SECTIONS MEM_INIT_SECTIONS
-#define ALL_XXXEXIT_SECTIONS MEM_EXIT_SECTIONS
#define ALL_INIT_SECTIONS INIT_SECTIONS, ALL_XXXINIT_SECTIONS
-#define ALL_EXIT_SECTIONS EXIT_SECTIONS, ALL_XXXEXIT_SECTIONS
+#define ALL_EXIT_SECTIONS EXIT_SECTIONS
#define DATA_SECTIONS ".data", ".data.rel"
#define TEXT_SECTIONS ".text", ".text.*", ".sched.text", \
@@ -822,7 +821,6 @@ static void check_section(const char *modname, struct elf_info *elf,
#define MEM_INIT_SECTIONS ".meminit.*"
#define EXIT_SECTIONS ".exit.*"
-#define MEM_EXIT_SECTIONS ".memexit.*"
#define ALL_TEXT_SECTIONS ALL_INIT_TEXT_SECTIONS, ALL_EXIT_TEXT_SECTIONS, \
TEXT_SECTIONS, OTHER_TEXT_SECTIONS
@@ -832,7 +830,6 @@ enum mismatch {
DATA_TO_ANY_INIT,
TEXTDATA_TO_ANY_EXIT,
XXXINIT_TO_SOME_INIT,
- XXXEXIT_TO_SOME_EXIT,
ANY_INIT_TO_ANY_EXIT,
ANY_EXIT_TO_ANY_INIT,
EXTABLE_TO_NON_TEXT,
@@ -883,12 +880,6 @@ static const struct sectioncheck sectioncheck[] = {
.bad_tosec = { INIT_SECTIONS, NULL },
.mismatch = XXXINIT_TO_SOME_INIT,
},
-/* Do not reference exit code/data from memexit code/data */
-{
- .fromsec = { ALL_XXXEXIT_SECTIONS, NULL },
- .bad_tosec = { EXIT_SECTIONS, NULL },
- .mismatch = XXXEXIT_TO_SOME_EXIT,
-},
/* Do not use exit code/data from init code */
{
.fromsec = { ALL_INIT_SECTIONS, NULL },
@@ -1017,7 +1008,7 @@ static int secref_whitelist(const char *fromsec, const char *fromsym,
/* symbols in data sections that may refer to meminit sections */
if (match(fromsec, PATTERNS(DATA_SECTIONS)) &&
- match(tosec, PATTERNS(ALL_XXXINIT_SECTIONS, ALL_XXXEXIT_SECTIONS)) &&
+ match(tosec, PATTERNS(ALL_XXXINIT_SECTIONS)) &&
match(fromsym, PATTERNS("*driver")))
return 0;
--
2.40.1
next prev parent reply other threads:[~2023-10-22 17:06 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-10-22 17:06 [PATCH 01/10] modpost: remove ALL_EXIT_DATA_SECTIONS macro Masahiro Yamada
2023-10-22 17:06 ` Masahiro Yamada [this message]
2023-10-22 18:24 ` [PATCH 02/10] linux/init: remove __memexit* annotations Arnd Bergmann
2023-10-22 17:06 ` [PATCH 03/10] modpost: disallow *driver to reference .meminit* sections Masahiro Yamada
2023-10-22 17:06 ` [PATCH 04/10] modpost: remove more symbol patterns from the section check whitelist Masahiro Yamada
2023-10-23 23:28 ` Nathan Chancellor
2023-10-28 11:56 ` Masahiro Yamada
2023-10-22 17:06 ` [PATCH 05/10] modpost: remove MEM_INIT_SECTIONS macro Masahiro Yamada
2023-10-22 17:06 ` [PATCH 06/10] modpost: remove EXIT_SECTIONS macro Masahiro Yamada
2023-10-22 17:06 ` [PATCH 07/10] modpost: disallow the combination of EXPORT_SYMBOL and __meminit* Masahiro Yamada
2023-10-22 17:06 ` [PATCH 08/10] modpost: use ALL_INIT_SECTIONS for the section check from DATA_SECTIONS Masahiro Yamada
2023-10-22 17:06 ` [PATCH 09/10] modpost: merge sectioncheck table entries regarding init/exit sections Masahiro Yamada
2023-10-22 17:06 ` [PATCH 10/10] modpost: squash ALL_{INIT,EXIT}_TEXT_SECTIONS to ALL_TEXT_SECTIONS Masahiro Yamada
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