Kbuild updates for v4.19

- verify depmod is installed before modules_install - support build salt in case build ids must be unique between builds - allow users to specify additional host compiler flags via HOST*FLAGS, and rename internal variables to KBUILD_HOST*FLAGS - update buildtar script to drop vax support, add arm64 support - update builddeb script for better debarch support - document the pit-fall of if_changed usage - fix parallel build of UML with O= option - make 'samples' target depend on headers_install to fix build errors - remove deprecated host-progs variable - add a new coccinelle script for refcount_t vs atomic_t check - improve double-test coccinelle script - misc cleanups and fixes -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAABAgAGBQJbdFZ0AAoJED2LAQed4NsGcHYP/23txxk3GRP7O4UkfPw9Rtky MHiXTgcoy2vbG+l12BgzWX+qFii8XTUe3dQtK4HnGQFUIBtEBV/hpZPJtxfgGSev Zou5cv1kr5rNzTkCn//TG3O6/WIkTBCe2hahDCtmGDI3kd/cPK4dHbU/q6KpaqIJ qzZYBXIvCeu2GM8idQoCRrwdMpgu1pBz1gz2sDje1yHH2toI7T6cXHRLQDgx+HPq LIP7W9GUsoDdXjecvPD51LiW89E6BUxETBh5Ft9r9uzwB5ylQQMcw6Qyu2DiYDUX PPsHCMiolYV+Ttcy+vj/67KOvKmEaFotssck+RD/xDCF17zKhRkup+YM8kPLHTVZ TcAUZadbnT6U/s2W6GFwvVbN/P7cc3aif+aNCC/Pl23yagp3pydlSCocYxQgiVR7 /rx48haYDEgu/MJ1X0dOpSO0ErY7zu2OoAlNerW+D9QizwbP+WtZO/CJH8SxQRuN dQ1xmyNrie+ODgi9tbc4eBrsb+1rioX927TP5MbJcfXt5CTsxDmIqop5XwyYIoQN ZWWlzC8Ii3P2trAVpBgM2IEbngSxwr6T9Wbf1ScJnPKr/o1rq+pBk49cYstTz3kQ OwJ8gPwUrkW4R+hlD7L6mL/WcrKzZBQS0Ij1QW2kVSEhRrsKo99psE1/rGehnHu9 KGB0LYYCqGSOHR4zOjg0 =VjfG -----END PGP SIGNATURE----- Merge tag 'kbuild-v4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild Pull Kbuild updates from Masahiro Yamada: - verify depmod is installed before modules_install - support build salt in case build ids must be unique between builds - allow users to specify additional host compiler flags via HOST*FLAGS, and rename internal variables to KBUILD_HOST*FLAGS - update buildtar script to drop vax support, add arm64 support - update builddeb script for better debarch support - document the pit-fall of if_changed usage - fix parallel build of UML with O= option - make 'samples' target depend on headers_install to fix build errors - remove deprecated host-progs variable - add a new coccinelle script for refcount_t vs atomic_t check - improve double-test coccinelle script - misc cleanups and fixes * tag 'kbuild-v4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (41 commits) coccicheck: return proper error code on fail Coccinelle: doubletest: reduce side effect false positives kbuild: remove deprecated host-progs variable kbuild: make samples really depend on headers_install um: clean up archheaders recipe kbuild: add %asm-generic to no-dot-config-targets um: fix parallel building with O= option scripts: Add Python 3 support to tracing/draw_functrace.py builddeb: Add automatic support for sh{3,4}{,eb} architectures builddeb: Add automatic support for riscv* architectures builddeb: Add automatic support for m68k architecture builddeb: Add automatic support for or1k architecture builddeb: Add automatic support for sparc64 architecture builddeb: Add automatic support for mips{,64}r6{,el} architectures builddeb: Add automatic support for mips64el architecture builddeb: Add automatic support for ppc64 and powerpcspe architectures builddeb: Introduce functions to simplify kconfig tests in set_debarch builddeb: Drop check for 32-bit s390 builddeb: Change architecture detection fallback to use dpkg-architecture builddeb: Skip architecture detection when KBUILD_DEBARCH is set ...
2025-06-20 21:51:05 +00:00 · 2018-08-15 12:09:03 -07:00 · 2018-08-15 12:09:03 -07:00 · e026bcc561
commit e026bcc561
parent 7c7b562c6f 512ddf7d7d
51 changed files with 373 additions and 169 deletions
--- a/scripts/.gitignore
+++ b/scripts/.gitignore
@ -1,6 +1,7 @@
 #
 # Generated files
 #
+bin2c
 conmakehash
 kallsyms
 pnmtologo
--- a/scripts/Kbuild.include
+++ b/scripts/Kbuild.include
@ -56,7 +56,7 @@ kecho := $($(quiet)kecho)
 define filechk
 	$(Q)set -e;				\
 	mkdir -p $(dir $@);			\
-	$(filechk_$(1)) < $< > $@.tmp;		\
+	$(filechk_$(1)) > $@.tmp;		\
 	if [ -r $@ ] && cmp -s $@ $@.tmp; then	\
 		rm -f $@.tmp;			\
 	else					\
@ -126,7 +126,7 @@ cc-option = $(call __cc-option, $(CC),\
 # hostcc-option
 # Usage: cflags-y += $(call hostcc-option,-march=winchip-c6,-march=i586)
 hostcc-option = $(call __cc-option, $(HOSTCC),\
-	$(HOSTCFLAGS) $(HOST_EXTRACFLAGS),$(1),$(2))
+	$(KBUILD_HOSTCFLAGS) $(HOST_EXTRACFLAGS),$(1),$(2))

 # cc-option-yn
 # Usage: flag := $(call cc-option-yn,-march=winchip-c6)
--- a/scripts/Makefile
+++ b/scripts/Makefile
@ -10,6 +10,7 @@

 HOST_EXTRACFLAGS += -I$(srctree)/tools/include

+hostprogs-$(CONFIG_BUILD_BIN2C)  += bin2c
 hostprogs-$(CONFIG_KALLSYMS)     += kallsyms
 hostprogs-$(CONFIG_LOGO)         += pnmtologo
 hostprogs-$(CONFIG_VT)           += conmakehash
@ -22,8 +23,8 @@ hostprogs-$(CONFIG_SYSTEM_EXTRA_CERTIFICATE) += insert-sys-cert

 HOSTCFLAGS_sortextable.o = -I$(srctree)/tools/include
 HOSTCFLAGS_asn1_compiler.o = -I$(srctree)/include
-HOSTLOADLIBES_sign-file = -lcrypto
-HOSTLOADLIBES_extract-cert = -lcrypto
+HOSTLDLIBS_sign-file = -lcrypto
+HOSTLDLIBS_extract-cert = -lcrypto

 always		:= $(hostprogs-y) $(hostprogs-m)

--- a/scripts/Makefile.build
+++ b/scripts/Makefile.build
@ -53,13 +53,6 @@ endif

 include scripts/Makefile.lib

-ifdef host-progs
-ifneq ($(hostprogs-y),$(host-progs))
-$(warning kbuild: $(obj)/Makefile - Usage of host-progs is deprecated. Please replace with hostprogs-y!)
-hostprogs-y += $(host-progs)
-endif
-endif
-
 # Do not include host rules unless needed
 ifneq ($(hostprogs-y)$(hostprogs-m)$(hostlibs-y)$(hostlibs-m)$(hostcxxlibs-y)$(hostcxxlibs-m),)
 include scripts/Makefile.host
--- a/scripts/Makefile.clean
+++ b/scripts/Makefile.clean
@ -38,7 +38,6 @@ subdir-ymn	:= $(addprefix $(obj)/,$(subdir-ymn))

 __clean-files	:= $(extra-y) $(extra-m) $(extra-)       \
 		   $(always) $(targets) $(clean-files)   \
-		   $(host-progs)                         \
 		   $(hostprogs-y) $(hostprogs-m) $(hostprogs-) \
 		   $(hostlibs-y) $(hostlibs-m) $(hostlibs-) \
 		   $(hostcxxlibs-y) $(hostcxxlibs-m)
--- a/scripts/Makefile.host
+++ b/scripts/Makefile.host
@ -62,9 +62,9 @@ host-cxxshobjs	:= $(addprefix $(obj)/,$(host-cxxshobjs))
 #####
 # Handle options to gcc. Support building with separate output directory

-_hostc_flags   = $(HOSTCFLAGS)   $(HOST_EXTRACFLAGS)   \
+_hostc_flags   = $(KBUILD_HOSTCFLAGS)   $(HOST_EXTRACFLAGS)   \
                 $(HOSTCFLAGS_$(basetarget).o)
-_hostcxx_flags = $(HOSTCXXFLAGS) $(HOST_EXTRACXXFLAGS) \
+_hostcxx_flags = $(KBUILD_HOSTCXXFLAGS) $(HOST_EXTRACXXFLAGS) \
                 $(HOSTCXXFLAGS_$(basetarget).o)

 ifeq ($(KBUILD_SRC),)
@ -84,17 +84,17 @@ hostcxx_flags  = -Wp,-MD,$(depfile) $(__hostcxx_flags)
 # Create executable from a single .c file
 # host-csingle -> Executable
 quiet_cmd_host-csingle 	= HOSTCC  $@
-      cmd_host-csingle	= $(HOSTCC) $(hostc_flags) $(HOSTLDFLAGS) -o $@ $< \
-	  	$(HOST_LOADLIBES) $(HOSTLOADLIBES_$(@F))
+      cmd_host-csingle	= $(HOSTCC) $(hostc_flags) $(KBUILD_HOSTLDFLAGS) -o $@ $< \
+		$(KBUILD_HOSTLDLIBS) $(HOSTLDLIBS_$(@F))
 $(host-csingle): $(obj)/%: $(src)/%.c FORCE
 	$(call if_changed_dep,host-csingle)

 # Link an executable based on list of .o files, all plain c
 # host-cmulti -> executable
 quiet_cmd_host-cmulti	= HOSTLD  $@
-      cmd_host-cmulti	= $(HOSTCC) $(HOSTLDFLAGS) -o $@ \
+      cmd_host-cmulti	= $(HOSTCC) $(KBUILD_HOSTLDFLAGS) -o $@ \
 			  $(addprefix $(obj)/,$($(@F)-objs)) \
-			  $(HOST_LOADLIBES) $(HOSTLOADLIBES_$(@F))
+			  $(KBUILD_HOSTLDLIBS) $(HOSTLDLIBS_$(@F))
 $(host-cmulti): FORCE
 	$(call if_changed,host-cmulti)
 $(call multi_depend, $(host-cmulti), , -objs)
@ -109,10 +109,10 @@ $(host-cobjs): $(obj)/%.o: $(src)/%.c FORCE
 # Link an executable based on list of .o files, a mixture of .c and .cc
 # host-cxxmulti -> executable
 quiet_cmd_host-cxxmulti	= HOSTLD  $@
-      cmd_host-cxxmulti	= $(HOSTCXX) $(HOSTLDFLAGS) -o $@ \
+      cmd_host-cxxmulti	= $(HOSTCXX) $(KBUILD_HOSTLDFLAGS) -o $@ \
 			  $(foreach o,objs cxxobjs,\
 			  $(addprefix $(obj)/,$($(@F)-$(o)))) \
-			  $(HOST_LOADLIBES) $(HOSTLOADLIBES_$(@F))
+			  $(KBUILD_HOSTLDLIBS) $(HOSTLDLIBS_$(@F))
 $(host-cxxmulti): FORCE
 	$(call if_changed,host-cxxmulti)
 $(call multi_depend, $(host-cxxmulti), , -objs -cxxobjs)
@ -143,9 +143,9 @@ $(host-cxxshobjs): $(obj)/%.o: $(src)/%.c FORCE
 # Link a shared library, based on position independent .o files
 # *.o -> .so shared library (host-cshlib)
 quiet_cmd_host-cshlib	= HOSTLLD -shared $@
-      cmd_host-cshlib	= $(HOSTCC) $(HOSTLDFLAGS) -shared -o $@ \
+      cmd_host-cshlib	= $(HOSTCC) $(KBUILD_HOSTLDFLAGS) -shared -o $@ \
 			  $(addprefix $(obj)/,$($(@F:.so=-objs))) \
-			  $(HOST_LOADLIBES) $(HOSTLOADLIBES_$(@F))
+			  $(KBUILD_HOSTLDLIBS) $(HOSTLDLIBS_$(@F))
 $(host-cshlib): FORCE
 	$(call if_changed,host-cshlib)
 $(call multi_depend, $(host-cshlib), .so, -objs)
@ -153,9 +153,9 @@ $(call multi_depend, $(host-cshlib), .so, -objs)
 # Link a shared library, based on position independent .o files
 # *.o -> .so shared library (host-cxxshlib)
 quiet_cmd_host-cxxshlib	= HOSTLLD -shared $@
-      cmd_host-cxxshlib	= $(HOSTCXX) $(HOSTLDFLAGS) -shared -o $@ \
+      cmd_host-cxxshlib	= $(HOSTCXX) $(KBUILD_HOSTLDFLAGS) -shared -o $@ \
 			  $(addprefix $(obj)/,$($(@F:.so=-objs))) \
-			  $(HOST_LOADLIBES) $(HOSTLOADLIBES_$(@F))
+			  $(KBUILD_HOSTLDLIBS) $(HOSTLDLIBS_$(@F))
 $(host-cxxshlib): FORCE
 	$(call if_changed,host-cxxshlib)
 $(call multi_depend, $(host-cxxshlib), .so, -objs)
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@ -162,7 +162,7 @@ a_flags        = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE)     \
 cpp_flags      = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE)     \
 		 $(__cpp_flags)

-ld_flags       = $(LDFLAGS) $(ldflags-y)
+ld_flags       = $(LDFLAGS) $(ldflags-y) $(LDFLAGS_$(@F))

 DTC_INCLUDE    := $(srctree)/scripts/dtc/include-prefixes

@ -225,8 +225,7 @@ $(obj)/%: $(src)/%_shipped
 # ---------------------------------------------------------------------------

 quiet_cmd_ld = LD      $@
-cmd_ld = $(LD) $(LDFLAGS) $(ldflags-y) $(LDFLAGS_$(@F)) \
-	       $(filter-out FORCE,$^) -o $@
+cmd_ld = $(LD) $(ld_flags) $(filter-out FORCE,$^) -o $@

 # Objcopy
 # ---------------------------------------------------------------------------
@ -416,7 +415,7 @@ define filechk_offsets
 	 echo " * This file was generated by Kbuild"; \
 	 echo " */"; \
 	 echo ""; \
-	 sed -ne $(sed-offsets); \
+	 sed -ne $(sed-offsets) < $<; \
 	 echo ""; \
 	 echo "#endif" )
 endef
--- a/scripts/basic/.gitignore
+++ b/scripts/basic/.gitignore
@ -1,2 +1 @@
 fixdep
-bin2c
--- a/scripts/basic/Makefile
+++ b/scripts/basic/Makefile
@ -9,7 +9,6 @@
 # fixdep: 	 Used to generate dependency information during build process

 hostprogs-y	:= fixdep
-hostprogs-$(CONFIG_BUILD_BIN2C)     += bin2c
 always		:= $(hostprogs-y)

 # fixdep is needed to compile other host programs
--- a/scripts/basic/bin2c.c
+++ b/scripts/basic/bin2c.c
--- a/scripts/coccicheck
+++ b/scripts/coccicheck
@ -128,9 +128,10 @@ run_cmd_parmap() {
 	fi
 	echo $@ >>$DEBUG_FILE
 	$@ 2>>$DEBUG_FILE
-	if [[ $? -ne 0 ]]; then
+	err=$?
+	if [[ $err -ne 0 ]]; then
 		echo "coccicheck failed"
-		exit $?
+		exit $err
 	fi
 }

--- a/scripts/coccinelle/api/atomic_as_refcounter.cocci
+++ b/scripts/coccinelle/api/atomic_as_refcounter.cocci
@ -0,0 +1,129 @@
+// Check if refcount_t type and API should be used
+// instead of atomic_t type when dealing with refcounters
+//
+// Copyright (c) 2016-2017, Elena Reshetova, Intel Corporation
+//
+// Confidence: Moderate
+// URL: http://coccinelle.lip6.fr/
+// Options: --include-headers --very-quiet
+
+virtual report
+
+@r1 exists@
+identifier a, x;
+position p1, p2;
+identifier fname =~ ".*free.*";
+identifier fname2 =~ ".*destroy.*";
+identifier fname3 =~ ".*del.*";
+identifier fname4 =~ ".*queue_work.*";
+identifier fname5 =~ ".*schedule_work.*";
+identifier fname6 =~ ".*call_rcu.*";
+
+@@
+
+(
+ atomic_dec_and_test@p1(&(a)->x)
+|
+ atomic_dec_and_lock@p1(&(a)->x, ...)
+|
+ atomic_long_dec_and_lock@p1(&(a)->x, ...)
+|
+ atomic_long_dec_and_test@p1(&(a)->x)
+|
+ atomic64_dec_and_test@p1(&(a)->x)
+|
+ local_dec_and_test@p1(&(a)->x)
+)
+...
+(
+ fname@p2(a, ...);
+|
+ fname2@p2(...);
+|
+ fname3@p2(...);
+|
+ fname4@p2(...);
+|
+ fname5@p2(...);
+|
+ fname6@p2(...);
+)
+
+
+@script:python depends on report@
+p1 << r1.p1;
+p2 << r1.p2;
+@@
+msg = "atomic_dec_and_test variation before object free at line %s."
+coccilib.report.print_report(p1[0], msg % (p2[0].line))
+
+@r4 exists@
+identifier a, x, y;
+position p1, p2;
+identifier fname =~ ".*free.*";
+
+@@
+
+(
+ atomic_dec_and_test@p1(&(a)->x)
+|
+ atomic_dec_and_lock@p1(&(a)->x, ...)
+|
+ atomic_long_dec_and_lock@p1(&(a)->x, ...)
+|
+ atomic_long_dec_and_test@p1(&(a)->x)
+|
+ atomic64_dec_and_test@p1(&(a)->x)
+|
+ local_dec_and_test@p1(&(a)->x)
+)
+...
+y=a
+...
+fname@p2(y, ...);
+
+
+@script:python depends on report@
+p1 << r4.p1;
+p2 << r4.p2;
+@@
+msg = "atomic_dec_and_test variation before object free at line %s."
+coccilib.report.print_report(p1[0], msg % (p2[0].line))
+
+@r2 exists@
+identifier a, x;
+position p1;
+@@
+
+(
+atomic_add_unless(&(a)->x,-1,1)@p1
+|
+atomic_long_add_unless(&(a)->x,-1,1)@p1
+|
+atomic64_add_unless(&(a)->x,-1,1)@p1
+)
+
+@script:python depends on report@
+p1 << r2.p1;
+@@
+msg = "atomic_add_unless"
+coccilib.report.print_report(p1[0], msg)
+
+@r3 exists@
+identifier x;
+position p1;
+@@
+
+(
+x = atomic_add_return@p1(-1, ...);
+|
+x = atomic_long_add_return@p1(-1, ...);
+|
+x = atomic64_add_return@p1(-1, ...);
+)
+
+@script:python depends on report@
+p1 << r3.p1;
+@@
+msg = "x = atomic_add_return(-1, ...)"
+coccilib.report.print_report(p1[0], msg)
--- a/scripts/coccinelle/tests/doubletest.cocci
+++ b/scripts/coccinelle/tests/doubletest.cocci
@ -1,6 +1,7 @@
 /// Find &&/|| operations that include the same argument more than once
-//# A common source of false positives is when the argument performs a side
-//# effect.
+//# A common source of false positives is when the expression, or
+//# another expresssion in the same && or || operation, performs a
+//# side effect.
 ///
 // Confidence: Moderate
 // Copyright: (C) 2010 Nicolas Palix, DIKU.  GPLv2.
@ -20,20 +21,37 @@ position p;
@@

 (
-* E@p
-  || ... || E
+ E@p || ... || E
 |
-* E@p
-  && ... && E
+ E@p && ... && E
 )

-@script:python depends on org@
+@bad@
+expression r.E,e1,e2,fn;
+position r.p;
+assignment operator op;
+@@
+
+(
+E@p
+&
+ <+... \(fn(...)\|e1 op e2\|e1++\|e1--\|++e1\|--e1\) ...+>
+)
+
+@depends on context && !bad@
+expression r.E;
+position r.p;
+@@
+
+*E@p
+
+@script:python depends on org && !bad@
 p << r.p;
@@

 cocci.print_main("duplicated argument to && or ||",p)

-@script:python depends on report@
+@script:python depends on report && !bad@
 p << r.p;
@@

--- a/scripts/depmod.sh
+++ b/scripts/depmod.sh
@ -10,10 +10,16 @@ fi
 DEPMOD=$1
 KERNELRELEASE=$2

-if ! test -r System.map -a -x "$DEPMOD"; then
+if ! test -r System.map ; then
 	exit 0
 fi

+if [ -z $(command -v $DEPMOD) ]; then
+	echo "'make modules_install' requires $DEPMOD. Please install it." >&2
+	echo "This is probably in the kmod package." >&2
+	exit 1
+fi
+
 # older versions of depmod require the version string to start with three
 # numbers, so we cheat with a symlink here
 depmod_hack_needed=true
--- a/scripts/kconfig/Makefile
+++ b/scripts/kconfig/Makefile
@ -169,7 +169,7 @@ HOSTCFLAGS_zconf.tab.o	:= -I$(src)
 hostprogs-y	+= nconf
 nconf-objs	:= nconf.o zconf.tab.o nconf.gui.o

-HOSTLOADLIBES_nconf	= $(shell . $(obj)/.nconf-cfg && echo $$libs)
+HOSTLDLIBS_nconf	= $(shell . $(obj)/.nconf-cfg && echo $$libs)
 HOSTCFLAGS_nconf.o	= $(shell . $(obj)/.nconf-cfg && echo $$cflags)
 HOSTCFLAGS_nconf.gui.o	= $(shell . $(obj)/.nconf-cfg && echo $$cflags)

@ -180,7 +180,7 @@ hostprogs-y	+= mconf
 lxdialog	:= checklist.o inputbox.o menubox.o textbox.o util.o yesno.o
 mconf-objs	:= mconf.o zconf.tab.o $(addprefix lxdialog/, $(lxdialog))

-HOSTLOADLIBES_mconf = $(shell . $(obj)/.mconf-cfg && echo $$libs)
+HOSTLDLIBS_mconf = $(shell . $(obj)/.mconf-cfg && echo $$libs)
 $(foreach f, mconf.o $(lxdialog), \
  $(eval HOSTCFLAGS_$f = $$(shell . $(obj)/.mconf-cfg && echo $$$$cflags)))

@ -191,7 +191,7 @@ hostprogs-y	+= qconf
 qconf-cxxobjs	:= qconf.o
 qconf-objs	:= zconf.tab.o

-HOSTLOADLIBES_qconf	= $(shell . $(obj)/.qconf-cfg && echo $$libs)
+HOSTLDLIBS_qconf	= $(shell . $(obj)/.qconf-cfg && echo $$libs)
 HOSTCXXFLAGS_qconf.o	= $(shell . $(obj)/.qconf-cfg && echo $$cflags)

 $(obj)/qconf.o: $(obj)/.qconf-cfg $(obj)/qconf.moc
@ -206,7 +206,7 @@ $(obj)/%.moc: $(src)/%.h $(obj)/.qconf-cfg
 hostprogs-y	+= gconf
 gconf-objs	:= gconf.o zconf.tab.o

-HOSTLOADLIBES_gconf = $(shell . $(obj)/.gconf-cfg && echo $$libs)
+HOSTLDLIBS_gconf    = $(shell . $(obj)/.gconf-cfg && echo $$libs)
 HOSTCFLAGS_gconf.o  = $(shell . $(obj)/.gconf-cfg && echo $$cflags)

 $(obj)/gconf.o: $(obj)/.gconf-cfg
--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@ -2125,10 +2125,13 @@ static int check_modname_len(struct module *mod)
 **/
 static void add_header(struct buffer *b, struct module *mod)
 {
+	buf_printf(b, "#include <linux/build-salt.h>\n");
 	buf_printf(b, "#include <linux/module.h>\n");
 	buf_printf(b, "#include <linux/vermagic.h>\n");
 	buf_printf(b, "#include <linux/compiler.h>\n");
 	buf_printf(b, "\n");
+	buf_printf(b, "BUILD_SALT;\n");
+	buf_printf(b, "\n");
 	buf_printf(b, "MODULE_INFO(vermagic, VERMAGIC_STRING);\n");
 	buf_printf(b, "MODULE_INFO(name, KBUILD_MODNAME);\n");
 	buf_printf(b, "\n");
--- a/scripts/package/buildtar
+++ b/scripts/package/buildtar
@ -84,10 +84,6 @@ case "${ARCH}" in
 		[ -f "${KBUILD_IMAGE}" ] && cp -v -- "${KBUILD_IMAGE}" "${tmpdir}/boot/vmlinux-${KERNELRELEASE}"
 		[ -f "${objtree}/lifimage" ] && cp -v -- "${objtree}/lifimage" "${tmpdir}/boot/lifimage-${KERNELRELEASE}"
 		;;
-	vax)
-		[ -f "${objtree}/vmlinux.SYS" ] && cp -v -- "${objtree}/vmlinux.SYS" "${tmpdir}/boot/vmlinux-${KERNELRELEASE}.SYS"
-		[ -f "${objtree}/vmlinux.dsk" ] && cp -v -- "${objtree}/vmlinux.dsk" "${tmpdir}/boot/vmlinux-${KERNELRELEASE}.dsk"
-		;;
 	mips)
 		if [ -f "${objtree}/arch/mips/boot/compressed/vmlinux.bin" ]; then
 			cp -v -- "${objtree}/arch/mips/boot/compressed/vmlinux.bin" "${tmpdir}/boot/vmlinuz-${KERNELRELEASE}"
@ -109,6 +105,14 @@ case "${ARCH}" in
 			cp -v -- "${objtree}/vmlinux" "${tmpdir}/boot/vmlinux-${KERNELRELEASE}"
 		fi
 		;;
+	arm64)
+		for i in Image.bz2 Image.gz Image.lz4 Image.lzma Image.lzo ; do
+			if [ -f "${objtree}/arch/arm64/boot/${i}" ] ; then
+				cp -v -- "${objtree}/arch/arm64/boot/${i}" "${tmpdir}/boot/vmlinuz-${KERNELRELEASE}"
+				break
+			fi
+		done
+		;;
 	*)
 		[ -f "${KBUILD_IMAGE}" ] && cp -v -- "${KBUILD_IMAGE}" "${tmpdir}/boot/vmlinux-kbuild-${KERNELRELEASE}"
 		echo "" >&2
--- a/scripts/package/mkdebian
+++ b/scripts/package/mkdebian
@ -6,49 +6,81 @@

 set -e

+is_enabled() {
+	grep -q "^CONFIG_$1=y" $KCONFIG_CONFIG
+}
+
+if_enabled_echo() {
+	if is_enabled "$1"; then
+		echo -n "$2"
+	elif [ $# -ge 3 ]; then
+		echo -n "$3"
+	fi
+}
+
 set_debarch() {
+	if [ -n "$KBUILD_DEBARCH" ] ; then
+		debarch="$KBUILD_DEBARCH"
+		return
+	fi
+
 	# Attempt to find the correct Debian architecture
 	case "$UTS_MACHINE" in
-	i386|ia64|alpha)
+	i386|ia64|alpha|m68k|riscv*)
 		debarch="$UTS_MACHINE" ;;
 	x86_64)
 		debarch=amd64 ;;
 	sparc*)
-		debarch=sparc ;;
+		debarch=sparc$(if_enabled_echo 64BIT 64) ;;
 	s390*)
-		debarch=s390$(grep -q CONFIG_64BIT=y $KCONFIG_CONFIG && echo x || true) ;;
+		debarch=s390x ;;
 	ppc*)
-		debarch=$(grep -q CPU_LITTLE_ENDIAN=y $KCONFIG_CONFIG && echo ppc64el || echo powerpc) ;;
+		if is_enabled 64BIT; then
+			debarch=ppc64$(if_enabled_echo CPU_LITTLE_ENDIAN el)
+		else
+			debarch=powerpc$(if_enabled_echo SPE spe)
+		fi
+		;;
 	parisc*)
 		debarch=hppa ;;
 	mips*)
-		debarch=mips$(grep -q CPU_LITTLE_ENDIAN=y $KCONFIG_CONFIG && echo el || true) ;;
+		if is_enabled CPU_LITTLE_ENDIAN; then
+			debarch=mips$(if_enabled_echo 64BIT 64)$(if_enabled_echo CPU_MIPSR6 r6)el
+		elif is_enabled CPU_MIPSR6; then
+			debarch=mips$(if_enabled_echo 64BIT 64)r6
+		else
+			debarch=mips
+		fi
+		;;
 	aarch64|arm64)
 		debarch=arm64 ;;
 	arm*)
-		if grep -q CONFIG_AEABI=y $KCONFIG_CONFIG; then
-		    if grep -q CONFIG_VFP=y $KCONFIG_CONFIG; then
-			debarch=armhf
-		    else
-			debarch=armel
-		    fi
+		if is_enabled AEABI; then
+			debarch=arm$(if_enabled_echo VFP hf el)
 		else
-		    debarch=arm
+			debarch=arm
 		fi
 		;;
-	*)
-		debarch=$(dpkg --print-architecture)
+	openrisc)
+		debarch=or1k ;;
+	sh)
+		if is_enabled CPU_SH3; then
+			debarch=sh3$(if_enabled_echo CPU_BIG_ENDIAN eb)
+		elif is_enabled CPU_SH4; then
+			debarch=sh4$(if_enabled_echo CPU_BIG_ENDIAN eb)
+		fi
+		;;
+	esac
+	if [ -z "$debarch" ]; then
+		debarch=$(dpkg-architecture -qDEB_HOST_ARCH)
 		echo "" >&2
 		echo "** ** **  WARNING  ** ** **" >&2
 		echo "" >&2
 		echo "Your architecture doesn't have its equivalent" >&2
 		echo "Debian userspace architecture defined!" >&2
-		echo "Falling back to using your current userspace instead!" >&2
+		echo "Falling back to the current host architecture ($debarch)." >&2
 		echo "Please add support for $UTS_MACHINE to ${0} ..." >&2
 		echo "" >&2
-	esac
-	if [ -n "$KBUILD_DEBARCH" ] ; then
-		debarch="$KBUILD_DEBARCH"
 	fi
 }

--- a/scripts/tracing/draw_functrace.py
+++ b/scripts/tracing/draw_functrace.py
@ -123,7 +123,7 @@ def main():
 		tree = tree.getParent(caller)
 		tree = tree.calls(callee, calltime)

-	print CallTree.ROOT
+	print(CallTree.ROOT)

 if __name__ == "__main__":
 	main()