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Date: Sun, 11 Dec 2022 22:04:07 +0900
From: Masahiro Yamada <masahiroy@...nel.org>
To: linux-kbuild@...r.kernel.org
Cc: linux-kernel@...r.kernel.org,
Masahiro Yamada <masahiroy@...nel.org>,
Luis Chamberlain <mcgrof@...nel.org>,
Nathan Chancellor <nathan@...nel.org>,
Nick Desaulniers <ndesaulniers@...gle.com>,
Nicolas Schier <nicolas@...sle.eu>, Tom Rix <trix@...hat.com>,
linux-modules@...r.kernel.org, llvm@...ts.linux.dev
Subject: [PATCH 1/2] kbuild: change module.order to list *.o instead of *.ko
scripts/Makefile.build replaces the suffix .o with .ko, then
scripts/Makefile.modpost calls the sed command to change .ko back
to the original .o suffix.
Instead of converting the suffixes back-and-forth, store the .o paths
in modules.order, and replace it with .ko in 'make modules_install'.
This avoids the unneeded sed command.
Signed-off-by: Masahiro Yamada <masahiroy@...nel.org>
---
Makefile | 2 +-
scripts/Makefile.build | 2 +-
scripts/Makefile.modfinal | 6 +++---
scripts/Makefile.modinst | 2 +-
scripts/Makefile.modpost | 7 +++++--
scripts/clang-tools/gen_compile_commands.py | 8 ++++----
scripts/mod/modpost.c | 11 ++++-------
scripts/modules-check.sh | 2 +-
8 files changed, 20 insertions(+), 20 deletions(-)
diff --git a/Makefile b/Makefile
index 8b5930d521fc..669e25970917 100644
--- a/Makefile
+++ b/Makefile
@@ -1569,7 +1569,7 @@ __modinst_pre:
rm -f $(MODLIB)/build ; \
ln -s $(CURDIR) $(MODLIB)/build ; \
fi
- @sed 's:^:kernel/:' modules.order > $(MODLIB)/modules.order
+ @sed 's:^\(.*\)\.o$$:kernel/\1.ko:' modules.order > $(MODLIB)/modules.order
@cp -f modules.builtin $(MODLIB)/
@cp -f $(objtree)/modules.builtin.modinfo $(MODLIB)/
diff --git a/scripts/Makefile.build b/scripts/Makefile.build
index 799df12b53f3..267eb7aac5b2 100644
--- a/scripts/Makefile.build
+++ b/scripts/Makefile.build
@@ -435,7 +435,7 @@ $(obj)/built-in.a: $(real-obj-y) FORCE
# modules.order unless contained modules are updated.
cmd_modules_order = { $(foreach m, $(real-prereqs), \
- $(if $(filter %/modules.order, $m), cat $m, echo $(patsubst %.o,%.ko,$m));) :; } \
+ $(if $(filter %/modules.order, $m), cat $m, echo $m);) :; } \
> $@
$(obj)/modules.order: $(obj-m) FORCE
diff --git a/scripts/Makefile.modfinal b/scripts/Makefile.modfinal
index 83f2797e530c..a30d5b08eee9 100644
--- a/scripts/Makefile.modfinal
+++ b/scripts/Makefile.modfinal
@@ -15,7 +15,7 @@ include $(srctree)/scripts/Makefile.lib
# find all modules listed in modules.order
modules := $(call read-file, $(MODORDER))
-__modfinal: $(modules)
+__modfinal: $(modules:%.o=%.ko)
@:
# modname and part-of-module are set to make c_flags define proper module flags
@@ -57,13 +57,13 @@ if_changed_except = $(if $(call newer_prereqs_except,$(2))$(cmd-check), \
printf '%s\n' 'cmd_$@ := $(make-cmd)' > $(dot-target).cmd, @:)
# Re-generate module BTFs if either module's .ko or vmlinux changed
-$(modules): %.ko: %.o %.mod.o scripts/module.lds $(and $(CONFIG_DEBUG_INFO_BTF_MODULES),$(KBUILD_BUILTIN),vmlinux) FORCE
+%.ko: %.o %.mod.o scripts/module.lds $(and $(CONFIG_DEBUG_INFO_BTF_MODULES),$(KBUILD_BUILTIN),vmlinux) FORCE
+$(call if_changed_except,ld_ko_o,vmlinux)
ifdef CONFIG_DEBUG_INFO_BTF_MODULES
+$(if $(newer-prereqs),$(call cmd,btf_ko))
endif
-targets += $(modules) $(modules:.ko=.mod.o)
+targets += $(modules:%.o=%.ko) $(modules:%.o=%.mod.o)
# Add FORCE to the prequisites of a target to force it to be always rebuilt.
# ---------------------------------------------------------------------------
diff --git a/scripts/Makefile.modinst b/scripts/Makefile.modinst
index 65aac6be78ec..836391e5d209 100644
--- a/scripts/Makefile.modinst
+++ b/scripts/Makefile.modinst
@@ -26,7 +26,7 @@ suffix-$(CONFIG_MODULE_COMPRESS_GZIP) := .gz
suffix-$(CONFIG_MODULE_COMPRESS_XZ) := .xz
suffix-$(CONFIG_MODULE_COMPRESS_ZSTD) := .zst
-modules := $(patsubst $(extmod_prefix)%, $(dst)/%$(suffix-y), $(modules))
+modules := $(patsubst $(extmod_prefix)%.o, $(dst)/%.ko$(suffix-y), $(modules))
__modinst: $(modules)
@:
diff --git a/scripts/Makefile.modpost b/scripts/Makefile.modpost
index 55a72f5eb76d..f814a6acd200 100644
--- a/scripts/Makefile.modpost
+++ b/scripts/Makefile.modpost
@@ -107,7 +107,10 @@ ifneq ($(KBUILD_MODPOST_WARN)$(missing-input),)
modpost-args += -w
endif
-modorder-if-needed := $(if $(KBUILD_MODULES), $(MODORDER))
+ifdef KBUILD_MODULES
+modorder-if-needed := $(MODORDER)
+modpost-args += -T $(MODORDER)
+endif
MODPOST = scripts/mod/modpost
@@ -119,7 +122,7 @@ quiet_cmd_modpost = MODPOST $@
echo >&2 "WARNING: $(missing-input) is missing."; \
echo >&2 " Modules may not have dependencies or modversions."; \
echo >&2 " You may get many unresolved symbol warnings.";) \
- sed 's/ko$$/o/' $(or $(modorder-if-needed), /dev/null) | $(MODPOST) $(modpost-args) -T - $(vmlinux.o-if-present)
+ $(MODPOST) $(modpost-args) $(vmlinux.o-if-present)
targets += $(output-symdump)
$(output-symdump): $(modorder-if-needed) $(vmlinux.o-if-present) $(module.symvers-if-present) $(MODPOST) FORCE
diff --git a/scripts/clang-tools/gen_compile_commands.py b/scripts/clang-tools/gen_compile_commands.py
index d800b2c0af97..0227522959a4 100755
--- a/scripts/clang-tools/gen_compile_commands.py
+++ b/scripts/clang-tools/gen_compile_commands.py
@@ -138,10 +138,10 @@ def cmdfiles_for_modorder(modorder):
"""
with open(modorder) as f:
for line in f:
- ko = line.rstrip()
- base, ext = os.path.splitext(ko)
- if ext != '.ko':
- sys.exit('{}: module path must end with .ko'.format(ko))
+ obj = line.rstrip()
+ base, ext = os.path.splitext(obj)
+ if ext != '.o':
+ sys.exit('{}: module path must end with .o'.format(obj))
mod = base + '.mod'
# Read from *.mod, to get a list of objects that compose the module.
with open(mod) as m:
diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
index 56d856f2e511..b48838a71bf6 100644
--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@@ -1856,11 +1856,9 @@ static void read_symbols_from_files(const char *filename)
FILE *in = stdin;
char fname[PATH_MAX];
- if (strcmp(filename, "-") != 0) {
- in = fopen(filename, "r");
- if (!in)
- fatal("Can't open filenames file %s: %m", filename);
- }
+ in = fopen(filename, "r");
+ if (!in)
+ fatal("Can't open filenames file %s: %m", filename);
while (fgets(fname, PATH_MAX, in) != NULL) {
if (strends(fname, "\n"))
@@ -1868,8 +1866,7 @@ static void read_symbols_from_files(const char *filename)
read_symbols(fname);
}
- if (in != stdin)
- fclose(in);
+ fclose(in);
}
#define SZ 500
diff --git a/scripts/modules-check.sh b/scripts/modules-check.sh
index e06327722263..4c8da90de78e 100755
--- a/scripts/modules-check.sh
+++ b/scripts/modules-check.sh
@@ -16,7 +16,7 @@ check_same_name_modules()
for m in $(sed 's:.*/::' "$1" | sort | uniq -d)
do
echo "error: the following would cause module name conflict:" >&2
- sed -n "/\/$m/s:^: :p" "$1" >&2
+ sed -n "/\/$m/s:^\(.*\)\.o\$: \1.ko:p" "$1" >&2
exit_code=1
done
}
--
2.34.1
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