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authorLinus Torvalds <torvalds@linux-foundation.org>2021-07-10 11:01:38 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2021-07-10 11:01:38 -0700
commit81361b837a3450f0a44255fddfd7a4c72502b667 (patch)
tree5bd0571bb82c0e0590e50810350b044455b8afc3 /scripts
parente98e03d075537a14928661ebfbfcde34b0eced1a (diff)
parent27932b6a2088eac7a5afa5471963b926cfbb4de7 (diff)
Merge tag 'kbuild-v5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull Kbuild updates from Masahiro Yamada: - Increase the -falign-functions alignment for the debug option. - Remove ugly libelf checks from the top Makefile. - Make the silent build (-s) more silent. - Re-compile the kernel if KBUILD_BUILD_TIMESTAMP is specified. - Various script cleanups * tag 'kbuild-v5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (27 commits) scripts: add generic syscallnr.sh scripts: check duplicated syscall number in syscall table sparc: syscalls: use pattern rules to generate syscall headers parisc: syscalls: use pattern rules to generate syscall headers nds32: add arch/nds32/boot/.gitignore kbuild: mkcompile_h: consider timestamp if KBUILD_BUILD_TIMESTAMP is set kbuild: modpost: Explicitly warn about unprototyped symbols kbuild: remove trailing slashes from $(KBUILD_EXTMOD) kconfig.h: explain IS_MODULE(), IS_ENABLED() kconfig: constify long_opts scripts/setlocalversion: simplify the short version part scripts/setlocalversion: factor out 12-chars hash construction scripts/setlocalversion: add more comments to -dirty flag detection scripts/setlocalversion: remove workaround for old make-kpkg scripts/setlocalversion: remove mercurial, svn and git-svn supports kbuild: clean up ${quiet} checks in shell scripts kbuild: sink stdout from cmd for silent build init: use $(call cmd,) for generating include/generated/compile.h kbuild: merge scripts/mkmakefile to top Makefile sh: move core-y in arch/sh/Makefile to arch/sh/Kbuild ...
Diffstat (limited to 'scripts')
-rw-r--r--scripts/Kbuild.include7
-rw-r--r--scripts/Makefile.build2
-rw-r--r--scripts/Makefile.modfinal2
-rw-r--r--scripts/kconfig/conf.c2
-rwxr-xr-xscripts/link-vmlinux.sh4
-rwxr-xr-xscripts/mkcompile_h18
-rwxr-xr-xscripts/mkmakefile17
-rw-r--r--scripts/mod/modpost.c7
-rwxr-xr-xscripts/setlocalversion75
-rwxr-xr-xscripts/syscallhdr.sh2
-rw-r--r--scripts/syscallnr.sh74
-rwxr-xr-xscripts/syscalltbl.sh7
12 files changed, 118 insertions, 99 deletions
diff --git a/scripts/Kbuild.include b/scripts/Kbuild.include
index 82dd1b65b7a8..f247e691562d 100644
--- a/scripts/Kbuild.include
+++ b/scripts/Kbuild.include
@@ -90,8 +90,13 @@ clean := -f $(srctree)/scripts/Makefile.clean obj
echo-cmd = $(if $($(quiet)cmd_$(1)),\
echo ' $(call escsq,$($(quiet)cmd_$(1)))$(echo-why)';)
+# sink stdout for 'make -s'
+ redirect :=
+ quiet_redirect :=
+silent_redirect := exec >/dev/null;
+
# printing commands
-cmd = @set -e; $(echo-cmd) $(cmd_$(1))
+cmd = @set -e; $(echo-cmd) $($(quiet)redirect) $(cmd_$(1))
###
# if_changed - execute command if any prerequisite is newer than
diff --git a/scripts/Makefile.build b/scripts/Makefile.build
index 34d257653fb4..10b2f2380d6f 100644
--- a/scripts/Makefile.build
+++ b/scripts/Makefile.build
@@ -219,7 +219,6 @@ endif # CONFIG_FTRACE_MCOUNT_USE_RECORDMCOUNT
ifdef CONFIG_STACK_VALIDATION
ifndef CONFIG_LTO_CLANG
-ifneq ($(SKIP_STACK_VALIDATION),1)
__objtool_obj := $(objtree)/tools/objtool/objtool
@@ -233,7 +232,6 @@ objtool_obj = $(if $(patsubst y%,, \
$(OBJECT_FILES_NON_STANDARD_$(basetarget).o)$(OBJECT_FILES_NON_STANDARD)n), \
$(__objtool_obj))
-endif # SKIP_STACK_VALIDATION
endif # CONFIG_LTO_CLANG
endif # CONFIG_STACK_VALIDATION
diff --git a/scripts/Makefile.modfinal b/scripts/Makefile.modfinal
index a7883e455290..5e9b8057fb24 100644
--- a/scripts/Makefile.modfinal
+++ b/scripts/Makefile.modfinal
@@ -39,12 +39,10 @@ prelink-ext := .lto
# so let's now process the prelinked binary before we link the module.
ifdef CONFIG_STACK_VALIDATION
-ifneq ($(SKIP_STACK_VALIDATION),1)
cmd_ld_ko_o += \
$(objtree)/tools/objtool/objtool $(objtool_args) \
$(@:.ko=$(prelink-ext).o);
-endif # SKIP_STACK_VALIDATION
endif # CONFIG_STACK_VALIDATION
endif # CONFIG_LTO_CLANG
diff --git a/scripts/kconfig/conf.c b/scripts/kconfig/conf.c
index bfa1ea8f5f98..5d84b44a2a2a 100644
--- a/scripts/kconfig/conf.c
+++ b/scripts/kconfig/conf.c
@@ -678,7 +678,7 @@ static void check_conf(struct menu *menu)
check_conf(child);
}
-static struct option long_opts[] = {
+static const struct option long_opts[] = {
{"help", no_argument, NULL, 'h'},
{"silent", no_argument, NULL, 's'},
{"oldaskconfig", no_argument, &input_mode_opt, oldaskconfig},
diff --git a/scripts/link-vmlinux.sh b/scripts/link-vmlinux.sh
index 475faa15854e..36ef7b37fc5d 100755
--- a/scripts/link-vmlinux.sh
+++ b/scripts/link-vmlinux.sh
@@ -38,9 +38,7 @@ LDFLAGS_vmlinux="$3"
# Will be supressed by "make -s"
info()
{
- if [ "${quiet}" != "silent_" ]; then
- printf " %-7s %s\n" "${1}" "${2}"
- fi
+ printf " %-7s %s\n" "${1}" "${2}"
}
# Generate a linker script to ensure correct ordering of initcalls.
diff --git a/scripts/mkcompile_h b/scripts/mkcompile_h
index 4ae735039daf..6a2a04d92f42 100755
--- a/scripts/mkcompile_h
+++ b/scripts/mkcompile_h
@@ -9,8 +9,6 @@ PREEMPT_RT=$5
CC_VERSION="$6"
LD=$7
-vecho() { [ "${quiet}" = "silent_" ] || echo "$@" ; }
-
# Do not expand names
set -f
@@ -70,19 +68,27 @@ UTS_VERSION="$(echo $UTS_VERSION $CONFIG_FLAGS $TIMESTAMP | cut -b -$UTS_LEN)"
# Only replace the real compile.h if the new one is different,
# in order to preserve the timestamp and avoid unnecessary
# recompilations.
-# We don't consider the file changed if only the date/time changed.
+# We don't consider the file changed if only the date/time changed,
+# unless KBUILD_BUILD_TIMESTAMP was explicitly set (e.g. for
+# reproducible builds with that value referring to a commit timestamp).
# A kernel config change will increase the generation number, thus
# causing compile.h to be updated (including date/time) due to the
# changed comment in the
# first line.
+if [ -z "$KBUILD_BUILD_TIMESTAMP" ]; then
+ IGNORE_PATTERN="UTS_VERSION"
+else
+ IGNORE_PATTERN="NOT_A_PATTERN_TO_BE_MATCHED"
+fi
+
if [ -r $TARGET ] && \
- grep -v 'UTS_VERSION' $TARGET > .tmpver.1 && \
- grep -v 'UTS_VERSION' .tmpcompile > .tmpver.2 && \
+ grep -v $IGNORE_PATTERN $TARGET > .tmpver.1 && \
+ grep -v $IGNORE_PATTERN .tmpcompile > .tmpver.2 && \
cmp -s .tmpver.1 .tmpver.2; then
rm -f .tmpcompile
else
- vecho " UPD $TARGET"
+ echo " UPD $TARGET"
mv -f .tmpcompile $TARGET
fi
rm -f .tmpver.1 .tmpver.2
diff --git a/scripts/mkmakefile b/scripts/mkmakefile
deleted file mode 100755
index 1cb174751429..000000000000
--- a/scripts/mkmakefile
+++ /dev/null
@@ -1,17 +0,0 @@
-#!/bin/sh
-# SPDX-License-Identifier: GPL-2.0
-# Generates a small Makefile used in the root of the output
-# directory, to allow make to be started from there.
-# The Makefile also allow for more convinient build of external modules
-
-# Usage
-# $1 - Kernel src directory
-
-if [ "${quiet}" != "silent_" ]; then
- echo " GEN Makefile"
-fi
-
-cat << EOF > Makefile
-# Automatically generated by $0: don't edit
-include $1/Makefile
-EOF
diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
index 3e623ccc020b..270a7df898e2 100644
--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@@ -660,8 +660,11 @@ static void handle_modversion(const struct module *mod,
unsigned int crc;
if (sym->st_shndx == SHN_UNDEF) {
- warn("EXPORT symbol \"%s\" [%s%s] version generation failed, symbol will not be versioned.\n",
- symname, mod->name, mod->is_vmlinux ? "" : ".ko");
+ warn("EXPORT symbol \"%s\" [%s%s] version ...\n"
+ "Is \"%s\" prototyped in <asm/asm-prototypes.h>?\n",
+ symname, mod->name, mod->is_vmlinux ? "" : ".ko",
+ symname);
+
return;
}
diff --git a/scripts/setlocalversion b/scripts/setlocalversion
index db941f6d9591..151f04971faa 100755
--- a/scripts/setlocalversion
+++ b/scripts/setlocalversion
@@ -59,32 +59,19 @@ scm_version()
fi
# If we are past a tagged commit (like
# "v2.6.30-rc5-302-g72357d5"), we pretty print it.
- #
- # Ensure the abbreviated sha1 has exactly 12
- # hex characters, to make the output
- # independent of git version, local
- # core.abbrev settings and/or total number of
- # objects in the current repository - passing
- # --abbrev=12 ensures a minimum of 12, and the
- # awk substr() then picks the 'g' and first 12
- # hex chars.
- if atag="$(git describe --abbrev=12 2>/dev/null)"; then
- echo "$atag" | awk -F- '{printf("-%05d-%s", $(NF-1),substr($(NF),0,13))}'
-
- # If we don't have a tag at all we print -g{commitish},
- # again using exactly 12 hex chars.
- else
- head="$(echo $head | cut -c1-12)"
- printf '%s%s' -g $head
+ if atag="$(git describe 2>/dev/null)"; then
+ echo "$atag" | awk -F- '{printf("-%05d", $(NF-1))}'
fi
- fi
- # Is this git on svn?
- if git config --get svn-remote.svn.url >/dev/null; then
- printf -- '-svn%s' "$(git svn find-rev $head)"
+ # Add -g and exactly 12 hex chars.
+ printf '%s%s' -g "$(echo $head | cut -c1-12)"
fi
# Check for uncommitted changes.
+ # This script must avoid any write attempt to the source tree,
+ # which might be read-only.
+ # You cannot use 'git describe --dirty' because it tries to
+ # create .git/index.lock .
# First, with git-status, but --no-optional-locks is only
# supported in git >= 2.14, so fall back to git-diff-index if
# it fails. Note that git-diff-index does not refresh the
@@ -93,45 +80,9 @@ scm_version()
if {
git --no-optional-locks status -uno --porcelain 2>/dev/null ||
git diff-index --name-only HEAD
- } | grep -qvE '^(.. )?scripts/package'; then
+ } | read dummy; then
printf '%s' -dirty
fi
-
- # All done with git
- return
- fi
-
- # Check for mercurial and a mercurial repo.
- if test -d .hg && hgid=$(hg id 2>/dev/null); then
- # Do we have an tagged version? If so, latesttagdistance == 1
- if [ "$(hg log -r . --template '{latesttagdistance}')" = "1" ]; then
- id=$(hg log -r . --template '{latesttag}')
- printf '%s%s' -hg "$id"
- else
- tag=$(printf '%s' "$hgid" | cut -d' ' -f2)
- if [ -z "$tag" -o "$tag" = tip ]; then
- id=$(printf '%s' "$hgid" | sed 's/[+ ].*//')
- printf '%s%s' -hg "$id"
- fi
- fi
-
- # Are there uncommitted changes?
- # These are represented by + after the changeset id.
- case "$hgid" in
- *+|*+\ *) printf '%s' -dirty ;;
- esac
-
- # All done with mercurial
- return
- fi
-
- # Check for svn and a svn repo.
- if rev=$(LC_ALL=C svn info 2>/dev/null | grep '^Last Changed Rev'); then
- rev=$(echo $rev | awk '{print $NF}')
- printf -- '-svn%s' "$rev"
-
- # All done with svn
- return
fi
}
@@ -180,15 +131,13 @@ res="${res}${CONFIG_LOCALVERSION}${LOCALVERSION}"
if test "$CONFIG_LOCALVERSION_AUTO" = "y"; then
# full scm version string
res="$res$(scm_version)"
-else
+elif [ -z "${LOCALVERSION}" ]; then
# append a plus sign if the repository is not in a clean
# annotated or signed tagged state (as git describe only
# looks at signed or annotated tags - git tag -a/-s) and
# LOCALVERSION= is not specified
- if test "${LOCALVERSION+set}" != "set"; then
- scm=$(scm_version --short)
- res="$res${scm:++}"
- fi
+ scm=$(scm_version --short)
+ res="$res${scm:++}"
fi
echo "$res"
diff --git a/scripts/syscallhdr.sh b/scripts/syscallhdr.sh
index 848ac2735115..22e34cd46b9b 100755
--- a/scripts/syscallhdr.sh
+++ b/scripts/syscallhdr.sh
@@ -69,7 +69,7 @@ guard=_UAPI_ASM_$(basename "$outfile" |
sed -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/' \
-e 's/[^A-Z0-9_]/_/g' -e 's/__/_/g')
-grep -E "^[0-9A-Fa-fXx]+[[:space:]]+$abis" "$infile" | sort -n | {
+grep -E "^[0-9A-Fa-fXx]+[[:space:]]+$abis" "$infile" | {
echo "#ifndef $guard"
echo "#define $guard"
echo
diff --git a/scripts/syscallnr.sh b/scripts/syscallnr.sh
new file mode 100644
index 000000000000..3aa29e0dcc52
--- /dev/null
+++ b/scripts/syscallnr.sh
@@ -0,0 +1,74 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0-only
+#
+# Generate a syscall number header.
+#
+# Each line of the syscall table should have the following format:
+#
+# NR ABI NAME [NATIVE] [COMPAT]
+#
+# NR syscall number
+# ABI ABI name
+# NAME syscall name
+# NATIVE native entry point (optional)
+# COMPAT compat entry point (optional)
+set -e
+
+usage() {
+ echo >&2 "usage: $0 [--abis ABIS] [--prefix PREFIX] INFILE OUTFILE" >&2
+ echo >&2
+ echo >&2 " INFILE input syscall table"
+ echo >&2 " OUTFILE output header file"
+ echo >&2
+ echo >&2 "options:"
+ echo >&2 " --abis ABIS ABI(s) to handle (By default, all lines are handled)"
+ echo >&2 " --prefix PREFIX The prefix to the macro like __NR_<PREFIX><NAME>"
+ exit 1
+}
+
+# default unless specified by options
+abis=
+prefix=
+
+while [ $# -gt 0 ]
+do
+ case $1 in
+ --abis)
+ abis=$(echo "($2)" | tr ',' '|')
+ shift 2;;
+ --prefix)
+ prefix=$2
+ shift 2;;
+ -*)
+ echo "$1: unknown option" >&2
+ usage;;
+ *)
+ break;;
+ esac
+done
+
+if [ $# -ne 2 ]; then
+ usage
+fi
+
+infile="$1"
+outfile="$2"
+
+guard=_ASM_$(basename "$outfile" |
+ sed -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/' \
+ -e 's/[^A-Z0-9_]/_/g' -e 's/__/_/g')
+
+grep -E "^[0-9A-Fa-fXx]+[[:space:]]+$abis" "$infile" | sort -n | {
+ echo "#ifndef $guard"
+ echo "#define $guard"
+ echo
+
+ max=0
+ while read nr abi name native compat ; do
+ max=$nr
+ done
+
+ echo "#define __NR_${prefix}syscalls $(($max + 1))"
+ echo
+ echo "#endif /* $guard */"
+} > "$outfile"
diff --git a/scripts/syscalltbl.sh b/scripts/syscalltbl.sh
index aa6ab156301c..6abe143889ef 100755
--- a/scripts/syscalltbl.sh
+++ b/scripts/syscalltbl.sh
@@ -52,10 +52,15 @@ outfile="$2"
nxt=0
-grep -E "^[0-9]+[[:space:]]+$abis" "$infile" | sort -n | {
+grep -E "^[0-9]+[[:space:]]+$abis" "$infile" | {
while read nr abi name native compat ; do
+ if [ $nxt -gt $nr ]; then
+ echo "error: $infile: syscall table is not sorted or duplicates the same syscall number" >&2
+ exit 1
+ fi
+
while [ $nxt -lt $nr ]; do
echo "__SYSCALL($nxt, sys_ni_syscall)"
nxt=$((nxt + 1))