| Message ID | 20240828083605.3093701-1-vegard.nossum@oracle.com |
|---|---|
| State | New |
| Headers | show |
| Series | kbuild: use objcopy to generate asm-offsets | expand |
On 28/08/2024 10:36, Vegard Nossum wrote: > In order to give assembly code access to C structs without having to > hardcore member offsets, the kernel compiles a C source file listing all > the structs and offsets that are needed in assembly code. Using some > C preprocessor trickery and a sed script, the compiled assembly code is > turned back into C preprocessor code that in turn can be used by the > asssembly code. > > This sed script is very hard to read and understand. > > Remove the sed script and compile the C source listing structs and > offsets to an object file (instead of assembly code) that embeds C source > directly. Then extract the C source using objcopy. > > The resulting code is more readable, less fragile, and sligthly shorter. > > Note to reviewers: The 'objcopy ... /dev/stdout | cat' bit is needed to > force the correct ordering of the objcopy lines vs. the surrounding echo > commands; without it, objcopy will open /dev/stdout (which refers to a > temporary file created by kbuild) and reset the file offset to 0. In > other words, the pipe ensures that objcopy doesn't overwrite the lines > that already exist in /dev/stdout. Turns out LLVM's objcopy doesn't support writing to /dev/stdout, so we might have to use a temporary file. I'll look into it and send a v2. Vegard
Hi Vegard, kernel test robot noticed the following build errors: [auto build test ERROR on masahiroy-kbuild/for-next] [also build test ERROR on masahiroy-kbuild/fixes soc/for-next kvmarm/next kvm/queue uml/next krzk-mem-ctrl/for-next bpf-next/master bpf/master linus/master v6.11-rc5 next-20240829] [cannot apply to tmlind-omap/for-next kvm/linux-next uml/fixes] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Vegard-Nossum/kbuild-use-objcopy-to-generate-asm-offsets/20240828-163854 base: https://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild.git for-next patch link: https://lore.kernel.org/r/20240828083605.3093701-1-vegard.nossum%40oracle.com patch subject: [PATCH] kbuild: use objcopy to generate asm-offsets config: sh-randconfig-r072-20240829 (https://download.01.org/0day-ci/archive/20240829/202408292215.pEJKHLfT-lkp@intel.com/config) compiler: sh4-linux-gcc (GCC) 14.1.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240829/202408292215.pEJKHLfT-lkp@intel.com/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202408292215.pEJKHLfT-lkp@intel.com/ All errors (new ones prefixed by >>): In file included from scripts/mod/file2alias.c:13: scripts/mod/file2alias.c: In function 'do_usb_entry': >> ./scripts/mod/devicetable-offsets.h:10:39: error: stray '#' in program 10 | #define OFF_usb_device_id_match_flags #0 /* offsetof(struct usb_device_id, match_flags) */ | ^ scripts/mod/modpost.h:66:55: note: in definition of macro 'TO_NATIVE' 66 | (target_is_big_endian == host_is_big_endian ? x : bswap(x)) | ^ scripts/mod/file2alias.c:73:75: note: in expansion of macro 'OFF_usb_device_id_match_flags' 73 | typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f)) | ^~~~ scripts/mod/file2alias.c:175:9: note: in expansion of macro 'DEF_FIELD' 175 | DEF_FIELD(symval, usb_device_id, match_flags); | ^~~~~~~~~ >> ./scripts/mod/devicetable-offsets.h:10:39: error: stray '#' in program 10 | #define OFF_usb_device_id_match_flags #0 /* offsetof(struct usb_device_id, match_flags) */ | ^ scripts/mod/modpost.h:57:31: note: in definition of macro 'bswap' 57 | _Static_assert(sizeof(x) == 1 || sizeof(x) == 2 || \ | ^ scripts/mod/file2alias.c:73:44: note: in expansion of macro 'TO_NATIVE' 73 | typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f)) | ^~~~~~~~~ scripts/mod/file2alias.c:73:75: note: in expansion of macro 'OFF_usb_device_id_match_flags' 73 | typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f)) | ^~~~ scripts/mod/file2alias.c:175:9: note: in expansion of macro 'DEF_FIELD' 175 | DEF_FIELD(symval, usb_device_id, match_flags); | ^~~~~~~~~ >> ./scripts/mod/devicetable-offsets.h:10:39: error: stray '#' in program 10 | #define OFF_usb_device_id_match_flags #0 /* offsetof(struct usb_device_id, match_flags) */ | ^ scripts/mod/modpost.h:57:49: note: in definition of macro 'bswap' 57 | _Static_assert(sizeof(x) == 1 || sizeof(x) == 2 || \ | ^ scripts/mod/file2alias.c:73:44: note: in expansion of macro 'TO_NATIVE' 73 | typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f)) | ^~~~~~~~~ scripts/mod/file2alias.c:73:75: note: in expansion of macro 'OFF_usb_device_id_match_flags' 73 | typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f)) | ^~~~ scripts/mod/file2alias.c:175:9: note: in expansion of macro 'DEF_FIELD' 175 | DEF_FIELD(symval, usb_device_id, match_flags); | ^~~~~~~~~ >> ./scripts/mod/devicetable-offsets.h:10:39: error: stray '#' in program 10 | #define OFF_usb_device_id_match_flags #0 /* offsetof(struct usb_device_id, match_flags) */ | ^ scripts/mod/modpost.h:58:31: note: in definition of macro 'bswap' 58 | sizeof(x) == 4 || sizeof(x) == 8, "bug"); \ | ^ scripts/mod/file2alias.c:73:44: note: in expansion of macro 'TO_NATIVE' 73 | typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f)) | ^~~~~~~~~ scripts/mod/file2alias.c:73:75: note: in expansion of macro 'OFF_usb_device_id_match_flags' 73 | typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f)) | ^~~~ scripts/mod/file2alias.c:175:9: note: in expansion of macro 'DEF_FIELD' 175 | DEF_FIELD(symval, usb_device_id, match_flags); | ^~~~~~~~~ >> ./scripts/mod/devicetable-offsets.h:10:39: error: stray '#' in program 10 | #define OFF_usb_device_id_match_flags #0 /* offsetof(struct usb_device_id, match_flags) */ | ^ scripts/mod/modpost.h:58:49: note: in definition of macro 'bswap' 58 | sizeof(x) == 4 || sizeof(x) == 8, "bug"); \ | ^ scripts/mod/file2alias.c:73:44: note: in expansion of macro 'TO_NATIVE' 73 | typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f)) | ^~~~~~~~~ scripts/mod/file2alias.c:73:75: note: in expansion of macro 'OFF_usb_device_id_match_flags' 73 | typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f)) | ^~~~ scripts/mod/file2alias.c:175:9: note: in expansion of macro 'DEF_FIELD' 175 | DEF_FIELD(symval, usb_device_id, match_flags); | ^~~~~~~~~ >> ./scripts/mod/devicetable-offsets.h:10:39: error: stray '#' in program 10 | #define OFF_usb_device_id_match_flags #0 /* offsetof(struct usb_device_id, match_flags) */ | ^ scripts/mod/modpost.h:59:17: note: in definition of macro 'bswap' 59 | (typeof(x))(sizeof(x) == 2 ? bswap_16(x) : \ | ^ scripts/mod/file2alias.c:73:44: note: in expansion of macro 'TO_NATIVE' 73 | typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f)) | ^~~~~~~~~ scripts/mod/file2alias.c:73:75: note: in expansion of macro 'OFF_usb_device_id_match_flags' 73 | typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f)) | ^~~~ scripts/mod/file2alias.c:175:9: note: in expansion of macro 'DEF_FIELD' 175 | DEF_FIELD(symval, usb_device_id, match_flags); | ^~~~~~~~~ >> ./scripts/mod/devicetable-offsets.h:10:39: error: stray '#' in program 10 | #define OFF_usb_device_id_match_flags #0 /* offsetof(struct usb_device_id, match_flags) */ | ^ scripts/mod/modpost.h:59:28: note: in definition of macro 'bswap' 59 | (typeof(x))(sizeof(x) == 2 ? bswap_16(x) : \ | ^ scripts/mod/file2alias.c:73:44: note: in expansion of macro 'TO_NATIVE' 73 | typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f)) | ^~~~~~~~~ scripts/mod/file2alias.c:73:75: note: in expansion of macro 'OFF_usb_device_id_match_flags' 73 | typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f)) | ^~~~ scripts/mod/file2alias.c:175:9: note: in expansion of macro 'DEF_FIELD' 175 | DEF_FIELD(symval, usb_device_id, match_flags); | ^~~~~~~~~ In file included from scripts/mod/modpost.h:2: >> ./scripts/mod/devicetable-offsets.h:10:39: error: stray '#' in program 10 | #define OFF_usb_device_id_match_flags #0 /* offsetof(struct usb_device_id, match_flags) */ | ^ scripts/mod/modpost.h:66:59: note: in expansion of macro 'bswap' 66 | (target_is_big_endian == host_is_big_endian ? x : bswap(x)) | ^~~~~ scripts/mod/file2alias.c:73:44: note: in expansion of macro 'TO_NATIVE' 73 | typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f)) | ^~~~~~~~~ scripts/mod/file2alias.c:73:75: note: in expansion of macro 'OFF_usb_device_id_match_flags' 73 | typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f)) | ^~~~ scripts/mod/file2alias.c:175:9: note: in expansion of macro 'DEF_FIELD' 175 | DEF_FIELD(symval, usb_device_id, match_flags); | ^~~~~~~~~ >> ./scripts/mod/devicetable-offsets.h:10:39: error: stray '#' in program 10 | #define OFF_usb_device_id_match_flags #0 /* offsetof(struct usb_device_id, match_flags) */ | ^ scripts/mod/modpost.h:60:28: note: in definition of macro 'bswap' 60 | sizeof(x) == 4 ? bswap_32(x) : \ | ^ scripts/mod/file2alias.c:73:44: note: in expansion of macro 'TO_NATIVE' 73 | typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f)) | ^~~~~~~~~ scripts/mod/file2alias.c:73:75: note: in expansion of macro 'OFF_usb_device_id_match_flags' 73 | typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f)) | ^~~~ scripts/mod/file2alias.c:175:9: note: in expansion of macro 'DEF_FIELD' 175 | DEF_FIELD(symval, usb_device_id, match_flags); | ^~~~~~~~~ >> ./scripts/mod/devicetable-offsets.h:10:39: error: stray '#' in program 10 | #define OFF_usb_device_id_match_flags #0 /* offsetof(struct usb_device_id, match_flags) */ | ^ scripts/mod/modpost.h:66:59: note: in expansion of macro 'bswap' 66 | (target_is_big_endian == host_is_big_endian ? x : bswap(x)) | ^~~~~ scripts/mod/file2alias.c:73:44: note: in expansion of macro 'TO_NATIVE' 73 | typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f)) | ^~~~~~~~~ scripts/mod/file2alias.c:73:75: note: in expansion of macro 'OFF_usb_device_id_match_flags' 73 | typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f)) | ^~~~ scripts/mod/file2alias.c:175:9: note: in expansion of macro 'DEF_FIELD' 175 | DEF_FIELD(symval, usb_device_id, match_flags); | ^~~~~~~~~ >> ./scripts/mod/devicetable-offsets.h:10:39: error: stray '#' in program 10 | #define OFF_usb_device_id_match_flags #0 /* offsetof(struct usb_device_id, match_flags) */ | ^ scripts/mod/modpost.h:61:28: note: in definition of macro 'bswap' 61 | sizeof(x) == 8 ? bswap_64(x) : \ | ^ scripts/mod/file2alias.c:73:44: note: in expansion of macro 'TO_NATIVE' 73 | typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f)) | ^~~~~~~~~ scripts/mod/file2alias.c:73:75: note: in expansion of macro 'OFF_usb_device_id_match_flags' 73 | typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f)) | ^~~~ scripts/mod/file2alias.c:175:9: note: in expansion of macro 'DEF_FIELD' 175 | DEF_FIELD(symval, usb_device_id, match_flags); | ^~~~~~~~~ >> ./scripts/mod/devicetable-offsets.h:10:39: error: stray '#' in program 10 | #define OFF_usb_device_id_match_flags #0 /* offsetof(struct usb_device_id, match_flags) */ | ^ scripts/mod/modpost.h:66:59: note: in expansion of macro 'bswap' 66 | (target_is_big_endian == host_is_big_endian ? x : bswap(x)) | ^~~~~ scripts/mod/file2alias.c:73:44: note: in expansion of macro 'TO_NATIVE' 73 | typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f)) | ^~~~~~~~~ scripts/mod/file2alias.c:73:75: note: in expansion of macro 'OFF_usb_device_id_match_flags' 73 | typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f)) | ^~~~ scripts/mod/file2alias.c:175:9: note: in expansion of macro 'DEF_FIELD' 175 | DEF_FIELD(symval, usb_device_id, match_flags); | ^~~~~~~~~ >> ./scripts/mod/devicetable-offsets.h:10:39: error: stray '#' in program 10 | #define OFF_usb_device_id_match_flags #0 /* offsetof(struct usb_device_id, match_flags) */ | ^ scripts/mod/modpost.h:62:21: note: in definition of macro 'bswap' 62 | x); \ | ^ scripts/mod/file2alias.c:73:44: note: in expansion of macro 'TO_NATIVE' 73 | typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f)) | ^~~~~~~~~ scripts/mod/file2alias.c:73:75: note: in expansion of macro 'OFF_usb_device_id_match_flags' 73 | typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f)) | ^~~~ scripts/mod/file2alias.c:175:9: note: in expansion of macro 'DEF_FIELD' 175 | DEF_FIELD(symval, usb_device_id, match_flags); | ^~~~~~~~~ ./scripts/mod/devicetable-offsets.h:11:36: error: stray '#' in program 11 | #define OFF_usb_device_id_idVendor #2 /* offsetof(struct usb_device_id, idVendor) */ | ^ scripts/mod/modpost.h:66:55: note: in definition of macro 'TO_NATIVE' 66 | (target_is_big_endian == host_is_big_endian ? x : bswap(x)) | ^ scripts/mod/file2alias.c:73:75: note: in expansion of macro 'OFF_usb_device_id_idVendor' 73 | typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f)) | ^~~~ scripts/mod/file2alias.c:176:9: note: in expansion of macro 'DEF_FIELD' 176 | DEF_FIELD(symval, usb_device_id, idVendor); | ^~~~~~~~~ ./scripts/mod/devicetable-offsets.h:11:36: error: stray '#' in program 11 | #define OFF_usb_device_id_idVendor #2 /* offsetof(struct usb_device_id, idVendor) */ | ^ scripts/mod/modpost.h:57:31: note: in definition of macro 'bswap' 57 | _Static_assert(sizeof(x) == 1 || sizeof(x) == 2 || \ | ^ scripts/mod/file2alias.c:73:44: note: in expansion of macro 'TO_NATIVE' 73 | typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f)) | ^~~~~~~~~ scripts/mod/file2alias.c:73:75: note: in expansion of macro 'OFF_usb_device_id_idVendor' 73 | typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f)) | ^~~~ scripts/mod/file2alias.c:176:9: note: in expansion of macro 'DEF_FIELD' 176 | DEF_FIELD(symval, usb_device_id, idVendor); | ^~~~~~~~~ ./scripts/mod/devicetable-offsets.h:11:36: error: stray '#' in program 11 | #define OFF_usb_device_id_idVendor #2 /* offsetof(struct usb_device_id, idVendor) */ | ^ scripts/mod/modpost.h:57:49: note: in definition of macro 'bswap' 57 | _Static_assert(sizeof(x) == 1 || sizeof(x) == 2 || \ | ^ scripts/mod/file2alias.c:73:44: note: in expansion of macro 'TO_NATIVE' 73 | typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f)) | ^~~~~~~~~ scripts/mod/file2alias.c:73:75: note: in expansion of macro 'OFF_usb_device_id_idVendor' 73 | typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f)) | ^~~~ scripts/mod/file2alias.c:176:9: note: in expansion of macro 'DEF_FIELD' 176 | DEF_FIELD(symval, usb_device_id, idVendor); | ^~~~~~~~~ ./scripts/mod/devicetable-offsets.h:11:36: error: stray '#' in program 11 | #define OFF_usb_device_id_idVendor #2 /* offsetof(struct usb_device_id, idVendor) */ | ^ scripts/mod/modpost.h:58:31: note: in definition of macro 'bswap' 58 | sizeof(x) == 4 || sizeof(x) == 8, "bug"); \ | ^ scripts/mod/file2alias.c:73:44: note: in expansion of macro 'TO_NATIVE' 73 | typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f)) | ^~~~~~~~~ scripts/mod/file2alias.c:73:75: note: in expansion of macro 'OFF_usb_device_id_idVendor' 73 | typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f)) | ^~~~ scripts/mod/file2alias.c:176:9: note: in expansion of macro 'DEF_FIELD' 176 | DEF_FIELD(symval, usb_device_id, idVendor); | ^~~~~~~~~ ./scripts/mod/devicetable-offsets.h:11:36: error: stray '#' in program 11 | #define OFF_usb_device_id_idVendor #2 /* offsetof(struct usb_device_id, idVendor) */ | ^ scripts/mod/modpost.h:58:49: note: in definition of macro 'bswap' 58 | sizeof(x) == 4 || sizeof(x) == 8, "bug"); \ | ^ scripts/mod/file2alias.c:73:44: note: in expansion of macro 'TO_NATIVE' 73 | typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f)) | ^~~~~~~~~ scripts/mod/file2alias.c:73:75: note: in expansion of macro 'OFF_usb_device_id_idVendor' 73 | typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f)) | ^~~~ scripts/mod/file2alias.c:176:9: note: in expansion of macro 'DEF_FIELD' 176 | DEF_FIELD(symval, usb_device_id, idVendor); | ^~~~~~~~~ ./scripts/mod/devicetable-offsets.h:11:36: error: stray '#' in program 11 | #define OFF_usb_device_id_idVendor #2 /* offsetof(struct usb_device_id, idVendor) */ | ^ scripts/mod/modpost.h:59:17: note: in definition of macro 'bswap' 59 | (typeof(x))(sizeof(x) == 2 ? bswap_16(x) : \ | ^ scripts/mod/file2alias.c:73:44: note: in expansion of macro 'TO_NATIVE' 73 | typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f)) | ^~~~~~~~~ scripts/mod/file2alias.c:73:75: note: in expansion of macro 'OFF_usb_device_id_idVendor' 73 | typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f)) | ^~~~ scripts/mod/file2alias.c:176:9: note: in expansion of macro 'DEF_FIELD' 176 | DEF_FIELD(symval, usb_device_id, idVendor); -- scripts/mod/file2alias.c:73:44: note: in expansion of macro 'TO_NATIVE' 73 | typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f)) | ^~~~~~~~~ scripts/mod/file2alias.c:73:75: note: in expansion of macro 'OFF_usb_device_id_bInterfaceNumber' 73 | typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f)) | ^~~~ scripts/mod/file2alias.c:185:9: note: in expansion of macro 'DEF_FIELD' 185 | DEF_FIELD(symval, usb_device_id, bInterfaceNumber); | ^~~~~~~~~ ./scripts/mod/devicetable-offsets.h:21:44: error: stray '#' in program 21 | #define OFF_usb_device_id_bInterfaceNumber #16 /* offsetof(struct usb_device_id, bInterfaceNumber) */ | ^ scripts/mod/modpost.h:66:59: note: in expansion of macro 'bswap' 66 | (target_is_big_endian == host_is_big_endian ? x : bswap(x)) | ^~~~~ scripts/mod/file2alias.c:73:44: note: in expansion of macro 'TO_NATIVE' 73 | typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f)) | ^~~~~~~~~ scripts/mod/file2alias.c:73:75: note: in expansion of macro 'OFF_usb_device_id_bInterfaceNumber' 73 | typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f)) | ^~~~ scripts/mod/file2alias.c:185:9: note: in expansion of macro 'DEF_FIELD' 185 | DEF_FIELD(symval, usb_device_id, bInterfaceNumber); | ^~~~~~~~~ ./scripts/mod/devicetable-offsets.h:21:44: error: stray '#' in program 21 | #define OFF_usb_device_id_bInterfaceNumber #16 /* offsetof(struct usb_device_id, bInterfaceNumber) */ | ^ scripts/mod/modpost.h:60:28: note: in definition of macro 'bswap' 60 | sizeof(x) == 4 ? bswap_32(x) : \ | ^ scripts/mod/file2alias.c:73:44: note: in expansion of macro 'TO_NATIVE' 73 | typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f)) | ^~~~~~~~~ scripts/mod/file2alias.c:73:75: note: in expansion of macro 'OFF_usb_device_id_bInterfaceNumber' 73 | typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f)) | ^~~~ scripts/mod/file2alias.c:185:9: note: in expansion of macro 'DEF_FIELD' 185 | DEF_FIELD(symval, usb_device_id, bInterfaceNumber); | ^~~~~~~~~ ./scripts/mod/devicetable-offsets.h:21:44: error: stray '#' in program 21 | #define OFF_usb_device_id_bInterfaceNumber #16 /* offsetof(struct usb_device_id, bInterfaceNumber) */ | ^ scripts/mod/modpost.h:66:59: note: in expansion of macro 'bswap' 66 | (target_is_big_endian == host_is_big_endian ? x : bswap(x)) | ^~~~~ scripts/mod/file2alias.c:73:44: note: in expansion of macro 'TO_NATIVE' 73 | typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f)) | ^~~~~~~~~ scripts/mod/file2alias.c:73:75: note: in expansion of macro 'OFF_usb_device_id_bInterfaceNumber' 73 | typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f)) | ^~~~ scripts/mod/file2alias.c:185:9: note: in expansion of macro 'DEF_FIELD' 185 | DEF_FIELD(symval, usb_device_id, bInterfaceNumber); | ^~~~~~~~~ ./scripts/mod/devicetable-offsets.h:21:44: error: stray '#' in program 21 | #define OFF_usb_device_id_bInterfaceNumber #16 /* offsetof(struct usb_device_id, bInterfaceNumber) */ | ^ scripts/mod/modpost.h:61:28: note: in definition of macro 'bswap' 61 | sizeof(x) == 8 ? bswap_64(x) : \ | ^ scripts/mod/file2alias.c:73:44: note: in expansion of macro 'TO_NATIVE' 73 | typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f)) | ^~~~~~~~~ scripts/mod/file2alias.c:73:75: note: in expansion of macro 'OFF_usb_device_id_bInterfaceNumber' 73 | typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f)) | ^~~~ scripts/mod/file2alias.c:185:9: note: in expansion of macro 'DEF_FIELD' 185 | DEF_FIELD(symval, usb_device_id, bInterfaceNumber); | ^~~~~~~~~ ./scripts/mod/devicetable-offsets.h:21:44: error: stray '#' in program 21 | #define OFF_usb_device_id_bInterfaceNumber #16 /* offsetof(struct usb_device_id, bInterfaceNumber) */ | ^ scripts/mod/modpost.h:66:59: note: in expansion of macro 'bswap' 66 | (target_is_big_endian == host_is_big_endian ? x : bswap(x)) | ^~~~~ scripts/mod/file2alias.c:73:44: note: in expansion of macro 'TO_NATIVE' 73 | typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f)) | ^~~~~~~~~ scripts/mod/file2alias.c:73:75: note: in expansion of macro 'OFF_usb_device_id_bInterfaceNumber' 73 | typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f)) | ^~~~ scripts/mod/file2alias.c:185:9: note: in expansion of macro 'DEF_FIELD' 185 | DEF_FIELD(symval, usb_device_id, bInterfaceNumber); | ^~~~~~~~~ ./scripts/mod/devicetable-offsets.h:21:44: error: stray '#' in program 21 | #define OFF_usb_device_id_bInterfaceNumber #16 /* offsetof(struct usb_device_id, bInterfaceNumber) */ | ^ scripts/mod/modpost.h:62:21: note: in definition of macro 'bswap' 62 | x); \ | ^ scripts/mod/file2alias.c:73:44: note: in expansion of macro 'TO_NATIVE' 73 | typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f)) | ^~~~~~~~~ scripts/mod/file2alias.c:73:75: note: in expansion of macro 'OFF_usb_device_id_bInterfaceNumber' 73 | typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f)) | ^~~~ scripts/mod/file2alias.c:185:9: note: in expansion of macro 'DEF_FIELD' 185 | DEF_FIELD(symval, usb_device_id, bInterfaceNumber); | ^~~~~~~~~ scripts/mod/file2alias.c: In function 'do_usb_entry_multi': >> ./scripts/mod/devicetable-offsets.h:10:39: error: stray '#' in program 10 | #define OFF_usb_device_id_match_flags #0 /* offsetof(struct usb_device_id, match_flags) */ | ^ scripts/mod/modpost.h:66:55: note: in definition of macro 'TO_NATIVE' 66 | (target_is_big_endian == host_is_big_endian ? x : bswap(x)) | ^ scripts/mod/file2alias.c:73:75: note: in expansion of macro 'OFF_usb_device_id_match_flags' 73 | typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f)) | ^~~~ scripts/mod/file2alias.c:282:9: note: in expansion of macro 'DEF_FIELD' 282 | DEF_FIELD(symval, usb_device_id, match_flags); | ^~~~~~~~~ >> ./scripts/mod/devicetable-offsets.h:10:39: error: stray '#' in program 10 | #define OFF_usb_device_id_match_flags #0 /* offsetof(struct usb_device_id, match_flags) */ | ^ scripts/mod/modpost.h:57:31: note: in definition of macro 'bswap' 57 | _Static_assert(sizeof(x) == 1 || sizeof(x) == 2 || \ | ^ scripts/mod/file2alias.c:73:44: note: in expansion of macro 'TO_NATIVE' 73 | typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f)) | ^~~~~~~~~ scripts/mod/file2alias.c:73:75: note: in expansion of macro 'OFF_usb_device_id_match_flags' 73 | typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f)) | ^~~~ scripts/mod/file2alias.c:282:9: note: in expansion of macro 'DEF_FIELD' 282 | DEF_FIELD(symval, usb_device_id, match_flags); | ^~~~~~~~~ >> ./scripts/mod/devicetable-offsets.h:10:39: error: stray '#' in program 10 | #define OFF_usb_device_id_match_flags #0 /* offsetof(struct usb_device_id, match_flags) */ | ^ scripts/mod/modpost.h:57:49: note: in definition of macro 'bswap' 57 | _Static_assert(sizeof(x) == 1 || sizeof(x) == 2 || \ | ^ scripts/mod/file2alias.c:73:44: note: in expansion of macro 'TO_NATIVE' 73 | typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f)) | ^~~~~~~~~ scripts/mod/file2alias.c:73:75: note: in expansion of macro 'OFF_usb_device_id_match_flags' 73 | typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f)) | ^~~~ scripts/mod/file2alias.c:282:9: note: in expansion of macro 'DEF_FIELD' 282 | DEF_FIELD(symval, usb_device_id, match_flags); | ^~~~~~~~~ >> ./scripts/mod/devicetable-offsets.h:10:39: error: stray '#' in program 10 | #define OFF_usb_device_id_match_flags #0 /* offsetof(struct usb_device_id, match_flags) */ | ^ scripts/mod/modpost.h:58:31: note: in definition of macro 'bswap' 58 | sizeof(x) == 4 || sizeof(x) == 8, "bug"); \ | ^ scripts/mod/file2alias.c:73:44: note: in expansion of macro 'TO_NATIVE' 73 | typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f)) | ^~~~~~~~~ scripts/mod/file2alias.c:73:75: note: in expansion of macro 'OFF_usb_device_id_match_flags' 73 | typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f)) | ^~~~ scripts/mod/file2alias.c:282:9: note: in expansion of macro 'DEF_FIELD' 282 | DEF_FIELD(symval, usb_device_id, match_flags); | ^~~~~~~~~ >> ./scripts/mod/devicetable-offsets.h:10:39: error: stray '#' in program 10 | #define OFF_usb_device_id_match_flags #0 /* offsetof(struct usb_device_id, match_flags) */ | ^ scripts/mod/modpost.h:58:49: note: in definition of macro 'bswap' 58 | sizeof(x) == 4 || sizeof(x) == 8, "bug"); \ | ^ scripts/mod/file2alias.c:73:44: note: in expansion of macro 'TO_NATIVE' 73 | typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f)) | ^~~~~~~~~ scripts/mod/file2alias.c:73:75: note: in expansion of macro 'OFF_usb_device_id_match_flags' 73 | typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f)) | ^~~~ scripts/mod/file2alias.c:282:9: note: in expansion of macro 'DEF_FIELD' 282 | DEF_FIELD(symval, usb_device_id, match_flags); | ^~~~~~~~~ >> ./scripts/mod/devicetable-offsets.h:10:39: error: stray '#' in program 10 | #define OFF_usb_device_id_match_flags #0 /* offsetof(struct usb_device_id, match_flags) */ | ^ scripts/mod/modpost.h:59:17: note: in definition of macro 'bswap' 59 | (typeof(x))(sizeof(x) == 2 ? bswap_16(x) : \ | ^ scripts/mod/file2alias.c:73:44: note: in expansion of macro 'TO_NATIVE' 73 | typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f)) | ^~~~~~~~~ scripts/mod/file2alias.c:73:75: note: in expansion of macro 'OFF_usb_device_id_match_flags' 73 | typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f)) | ^~~~ scripts/mod/file2alias.c:282:9: note: in expansion of macro 'DEF_FIELD' 282 | DEF_FIELD(symval, usb_device_id, match_flags); | ^~~~~~~~~ >> ./scripts/mod/devicetable-offsets.h:10:39: error: stray '#' in program 10 | #define OFF_usb_device_id_match_flags #0 /* offsetof(struct usb_device_id, match_flags) */ | ^ scripts/mod/modpost.h:59:28: note: in definition of macro 'bswap' 59 | (typeof(x))(sizeof(x) == 2 ? bswap_16(x) : \ | ^ scripts/mod/file2alias.c:73:44: note: in expansion of macro 'TO_NATIVE' 73 | typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f)) | ^~~~~~~~~ scripts/mod/file2alias.c:73:75: note: in expansion of macro 'OFF_usb_device_id_match_flags' 73 | typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f)) | ^~~~ scripts/mod/file2alias.c:282:9: note: in expansion of macro 'DEF_FIELD' 282 | DEF_FIELD(symval, usb_device_id, match_flags); | ^~~~~~~~~ ./scripts/mod/devicetable-offsets.h:10:39: error: stray '#' in program 10 | #define OFF_usb_device_id_match_flags #0 /* offsetof(struct usb_device_id, match_flags) */ | ^ scripts/mod/modpost.h:66:59: note: in expansion of macro 'bswap' 66 | (target_is_big_endian == host_is_big_endian ? x : bswap(x)) | ^~~~~ scripts/mod/file2alias.c:73:44: note: in expansion of macro 'TO_NATIVE' 73 | typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f)) | ^~~~~~~~~ scripts/mod/file2alias.c:73:75: note: in expansion of macro 'OFF_usb_device_id_match_flags' 73 | typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f)) | ^~~~ scripts/mod/file2alias.c:282:9: note: in expansion of macro 'DEF_FIELD' 282 | DEF_FIELD(symval, usb_device_id, match_flags); | ^~~~~~~~~ ./scripts/mod/devicetable-offsets.h:10:39: error: stray '#' in program 10 | #define OFF_usb_device_id_match_flags #0 /* offsetof(struct usb_device_id, match_flags) */ | ^ scripts/mod/modpost.h:60:28: note: in definition of macro 'bswap' 60 | sizeof(x) == 4 ? bswap_32(x) : \ | ^ scripts/mod/file2alias.c:73:44: note: in expansion of macro 'TO_NATIVE' 73 | typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f)) | ^~~~~~~~~ scripts/mod/file2alias.c:73:75: note: in expansion of macro 'OFF_usb_device_id_match_flags' 73 | typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f)) | ^~~~ scripts/mod/file2alias.c:282:9: note: in expansion of macro 'DEF_FIELD' 282 | DEF_FIELD(symval, usb_device_id, match_flags); | ^~~~~~~~~ ./scripts/mod/devicetable-offsets.h:10:39: error: stray '#' in program 10 | #define OFF_usb_device_id_match_flags #0 /* offsetof(struct usb_device_id, match_flags) */ | ^ scripts/mod/modpost.h:66:59: note: in expansion of macro 'bswap' 66 | (target_is_big_endian == host_is_big_endian ? x : bswap(x)) | ^~~~~ scripts/mod/file2alias.c:73:44: note: in expansion of macro 'TO_NATIVE' 73 | typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f)) | ^~~~~~~~~ scripts/mod/file2alias.c:73:75: note: in expansion of macro 'OFF_usb_device_id_match_flags' 73 | typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f)) | ^~~~ scripts/mod/file2alias.c:282:9: note: in expansion of macro 'DEF_FIELD' 282 | DEF_FIELD(symval, usb_device_id, match_flags); | ^~~~~~~~~ ./scripts/mod/devicetable-offsets.h:10:39: error: stray '#' in program 10 | #define OFF_usb_device_id_match_flags #0 /* offsetof(struct usb_device_id, match_flags) */ | ^ scripts/mod/modpost.h:61:28: note: in definition of macro 'bswap' 61 | sizeof(x) == 8 ? bswap_64(x) : \ | ^ scripts/mod/file2alias.c:73:44: note: in expansion of macro 'TO_NATIVE' 73 | typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f)) | ^~~~~~~~~ scripts/mod/file2alias.c:73:75: note: in expansion of macro 'OFF_usb_device_id_match_flags' 73 | typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f)) | ^~~~ scripts/mod/file2alias.c:282:9: note: in expansion of macro 'DEF_FIELD' 282 | DEF_FIELD(symval, usb_device_id, match_flags); | ^~~~~~~~~ ./scripts/mod/devicetable-offsets.h:10:39: error: stray '#' in program 10 | #define OFF_usb_device_id_match_flags #0 /* offsetof(struct usb_device_id, match_flags) */ | ^ scripts/mod/modpost.h:66:59: note: in expansion of macro 'bswap' 66 | (target_is_big_endian == host_is_big_endian ? x : bswap(x)) | ^~~~~ scripts/mod/file2alias.c:73:44: note: in expansion of macro 'TO_NATIVE' 73 | typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f)) | ^~~~~~~~~ scripts/mod/file2alias.c:73:75: note: in expansion of macro 'OFF_usb_device_id_match_flags' 73 | typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f)) | ^~~~ scripts/mod/file2alias.c:282:9: note: in expansion of macro 'DEF_FIELD' 282 | DEF_FIELD(symval, usb_device_id, match_flags); | ^~~~~~~~~ ./scripts/mod/devicetable-offsets.h:10:39: error: stray '#' in program 10 | #define OFF_usb_device_id_match_flags #0 /* offsetof(struct usb_device_id, match_flags) */ | ^ scripts/mod/modpost.h:62:21: note: in definition of macro 'bswap' 62 | x); \ | ^ scripts/mod/file2alias.c:73:44: note: in expansion of macro 'TO_NATIVE' 73 | typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f)) | ^~~~~~~~~ scripts/mod/file2alias.c:73:75: note: in expansion of macro 'OFF_usb_device_id_match_flags' 73 | typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f))
Hi Vegard,
kernel test robot noticed the following build errors:
[auto build test ERROR on masahiroy-kbuild/for-next]
[also build test ERROR on masahiroy-kbuild/fixes soc/for-next kvmarm/next kvm/queue uml/next krzk-mem-ctrl/for-next bpf-next/master bpf/master linus/master v6.11-rc5 next-20240829]
[cannot apply to tmlind-omap/for-next kvm/linux-next uml/fixes]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]
url: https://github.com/intel-lab-lkp/linux/commits/Vegard-Nossum/kbuild-use-objcopy-to-generate-asm-offsets/20240828-163854
base: https://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild.git for-next
patch link: https://lore.kernel.org/r/20240828083605.3093701-1-vegard.nossum%40oracle.com
patch subject: [PATCH] kbuild: use objcopy to generate asm-offsets
config: arc-allnoconfig (https://download.01.org/0day-ci/archive/20240829/202408292301.KMuvybe3-lkp@intel.com/config)
compiler: arc-elf-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240829/202408292301.KMuvybe3-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202408292301.KMuvybe3-lkp@intel.com/
All errors (new ones prefixed by >>):
{standard input}: Assembler messages:
>> {standard input}: Error: .size expression for main does not evaluate to a constant
make[3]: *** [scripts/Makefile.build:244: scripts/mod/devicetable-offsets.o] Error 1
make[3]: Target 'scripts/mod/' not remade because of errors.
make[2]: *** [Makefile:1192: prepare0] Error 2
make[2]: Target 'prepare' not remade because of errors.
make[1]: *** [Makefile:224: __sub-make] Error 2
make[1]: Target 'prepare' not remade because of errors.
make: *** [Makefile:224: __sub-make] Error 2
make: Target 'prepare' not remade because of errors.
Hi Vegard,
kernel test robot noticed the following build warnings:
[auto build test WARNING on masahiroy-kbuild/for-next]
[also build test WARNING on masahiroy-kbuild/fixes soc/for-next kvmarm/next kvm/queue uml/next krzk-mem-ctrl/for-next bpf-next/master bpf/master linus/master v6.11-rc5 next-20240829]
[cannot apply to tmlind-omap/for-next kvm/linux-next uml/fixes]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]
url: https://github.com/intel-lab-lkp/linux/commits/Vegard-Nossum/kbuild-use-objcopy-to-generate-asm-offsets/20240828-163854
base: https://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild.git for-next
patch link: https://lore.kernel.org/r/20240828083605.3093701-1-vegard.nossum%40oracle.com
patch subject: [PATCH] kbuild: use objcopy to generate asm-offsets
config: mips-loongson3_defconfig (https://download.01.org/0day-ci/archive/20240830/202408300438.xObK98m5-lkp@intel.com/config)
compiler: mips64el-linux-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240830/202408300438.xObK98m5-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202408300438.xObK98m5-lkp@intel.com/
All warnings (new ones prefixed by >>):
mips64el-linux-objcopy: /dev/stdout[.data.kbuild]: Illegal seek
In file included from include/linux/mm_types.h:18,
from include/linux/uio.h:10,
from include/linux/socket.h:8,
from include/linux/compat.h:15,
from arch/mips/kernel/asm-offsets.c:12:
include/linux/page-flags-layout.h:15:5: warning: "MAX_NR_ZONES" is not defined, evaluates to 0 [-Wundef]
15 | #if MAX_NR_ZONES < 2
| ^~~~~~~~~~~~
include/linux/page-flags-layout.h:58:19: warning: "LRU_GEN_WIDTH" is not defined, evaluates to 0 [-Wundef]
58 | #if ZONES_WIDTH + LRU_GEN_WIDTH + SECTIONS_WIDTH + NODES_SHIFT \
| ^~~~~~~~~~~~~
include/linux/page-flags-layout.h:59:28: warning: "NR_PAGEFLAGS" is not defined, evaluates to 0 [-Wundef]
59 | <= BITS_PER_LONG - NR_PAGEFLAGS
| ^~~~~~~~~~~~
include/linux/page-flags-layout.h:93:19: warning: "LRU_GEN_WIDTH" is not defined, evaluates to 0 [-Wundef]
93 | #if ZONES_WIDTH + LRU_GEN_WIDTH + SECTIONS_WIDTH + NODES_WIDTH + \
| ^~~~~~~~~~~~~
include/linux/page-flags-layout.h:94:64: warning: "NR_PAGEFLAGS" is not defined, evaluates to 0 [-Wundef]
94 | KASAN_TAG_WIDTH + LAST_CPUPID_SHIFT <= BITS_PER_LONG - NR_PAGEFLAGS
| ^~~~~~~~~~~~
include/linux/page-flags-layout.h:104:19: warning: "LRU_GEN_WIDTH" is not defined, evaluates to 0 [-Wundef]
104 | #if ZONES_WIDTH + LRU_GEN_WIDTH + SECTIONS_WIDTH + NODES_WIDTH + \
| ^~~~~~~~~~~~~
include/linux/page-flags-layout.h:105:63: warning: "NR_PAGEFLAGS" is not defined, evaluates to 0 [-Wundef]
105 | KASAN_TAG_WIDTH + LAST_CPUPID_WIDTH > BITS_PER_LONG - NR_PAGEFLAGS
| ^~~~~~~~~~~~
In file included from include/linux/mm_types.h:5:
include/linux/mm_types_task.h:22:34: warning: "SPINLOCK_SIZE" is not defined, evaluates to 0 [-Wundef]
22 | #define ALLOC_SPLIT_PTLOCKS (SPINLOCK_SIZE > BITS_PER_LONG/8)
| ^~~~~~~~~~~~~
include/linux/mm_types.h:478:5: note: in expansion of macro 'ALLOC_SPLIT_PTLOCKS'
478 | #if ALLOC_SPLIT_PTLOCKS
| ^~~~~~~~~~~~~~~~~~~
In file included from include/linux/dcache.h:14,
from include/linux/fs.h:8,
from include/linux/compat.h:17:
>> include/linux/lockref.h:23:36: warning: "SPINLOCK_SIZE" is not defined, evaluates to 0 [-Wundef]
23 | IS_ENABLED(CONFIG_SMP) && SPINLOCK_SIZE <= 4)
| ^~~~~~~~~~~~~
include/linux/lockref.h:27:5: note: in expansion of macro 'USE_CMPXCHG_LOCKREF'
27 | #if USE_CMPXCHG_LOCKREF
| ^~~~~~~~~~~~~~~~~~~
In file included from include/linux/gfp.h:7,
from include/linux/xarray.h:16,
from include/linux/list_lru.h:14,
from include/linux/fs.h:13:
include/linux/mmzone.h:842:29: error: 'MAX_NR_ZONES' undeclared here (not in a function); did you mean 'MAX_NR_GENS'?
842 | long lowmem_reserve[MAX_NR_ZONES];
| ^~~~~~~~~~~~
| MAX_NR_GENS
include/linux/mm_types_task.h:22:34: warning: "SPINLOCK_SIZE" is not defined, evaluates to 0 [-Wundef]
22 | #define ALLOC_SPLIT_PTLOCKS (SPINLOCK_SIZE > BITS_PER_LONG/8)
| ^~~~~~~~~~~~~
include/linux/mm.h:2889:5: note: in expansion of macro 'ALLOC_SPLIT_PTLOCKS'
2889 | #if ALLOC_SPLIT_PTLOCKS
| ^~~~~~~~~~~~~~~~~~~
In file included from include/linux/swap.h:9,
from include/linux/suspend.h:5,
from arch/mips/kernel/asm-offsets.c:17:
include/linux/memcontrol.h: In function 'mem_cgroup_get_zone_lru_size':
>> include/linux/memcontrol.h:914:31: warning: parameter 'lru' set but not used [-Wunused-but-set-parameter]
914 | enum lru_list lru, int zone_idx)
| ~~~~~~~~~~~~~~^~~
>> include/linux/memcontrol.h:914:40: warning: parameter 'zone_idx' set but not used [-Wunused-but-set-parameter]
914 | enum lru_list lru, int zone_idx)
| ~~~~^~~~~~~~
make[3]: *** [scripts/Makefile.build:244: arch/mips/kernel/asm-offsets.o] Error 1
make[3]: Target 'missing-syscalls' not remade because of errors.
make[2]: *** [arch/mips/Makefile:432: archprepare] Error 2
make[2]: Target 'prepare' not remade because of errors.
make[1]: *** [Makefile:224: __sub-make] Error 2
make[1]: Target 'prepare' not remade because of errors.
make: *** [Makefile:224: __sub-make] Error 2
make: Target 'prepare' not remade because of errors.
vim +/SPINLOCK_SIZE +23 include/linux/lockref.h
57f4257eae33e0 Peter Zijlstra 2013-11-14 20
57f4257eae33e0 Peter Zijlstra 2013-11-14 21 #define USE_CMPXCHG_LOCKREF \
57f4257eae33e0 Peter Zijlstra 2013-11-14 22 (IS_ENABLED(CONFIG_ARCH_USE_CMPXCHG_LOCKREF) && \
597d795a2a786d Kirill A. Shutemov 2013-12-20 @23 IS_ENABLED(CONFIG_SMP) && SPINLOCK_SIZE <= 4)
0f8f2aaaab0b0f Waiman Long 2013-08-28 24
Vegard Nossum <vegard.nossum@oracle.com> writes: > In order to give assembly code access to C structs without having to > hardcore member offsets, the kernel compiles a C source file listing all > the structs and offsets that are needed in assembly code. Using some > C preprocessor trickery and a sed script, the compiled assembly code is > turned back into C preprocessor code that in turn can be used by the > asssembly code. > > This sed script is very hard to read and understand. > > Remove the sed script and compile the C source listing structs and > offsets to an object file (instead of assembly code) that embeds C source > directly. Then extract the C source using objcopy. > I threw some builders at this and hit a few errors: parisc: # make -s -j 160 ARCH=parisc64 O=/kisskb/build/mpe_generic-64bit_defconfig_parisc64-gcc13 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-13.1.0-nolibc/hppa-linux/bin/hppa64-linux- {standard input}: Assembler messages: {standard input}: Error: .size expression for main does not evaluate to a constant make[3]: *** [/kisskb/src/scripts/Makefile.build:244: scripts/mod/devicetable-offsets.o] Error 1 s390: # make -s -j 32 ARCH=s390 O=/kisskb/build/mpe_defconfig_s390x-gcc13 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-13.1.0-nolibc/s390-linux/bin/s390-linux- In file included from /kisskb/src/arch/s390/include/asm/ptrace.h:11, from /kisskb/src/arch/s390/kernel/vdso64/vdso_user_wrapper.S:7: /kisskb/src/arch/s390/include/uapi/asm/ptrace.h:167: warning: "STACK_FRAME_OVERHEAD" redefined 167 | #define STACK_FRAME_OVERHEAD 160 /* size of minimum stack frame */ | In file included from /kisskb/src/include/asm-generic/asm-offsets.h:1, from ./arch/s390/include/generated/asm/asm-offsets.h:1, from /kisskb/src/arch/s390/kernel/vdso64/vdso_user_wrapper.S:5: ./include/generated/asm-offsets.h:51: note: this is the location of the previous definition 51 | #define STACK_FRAME_OVERHEAD -96 /* sizeof(struct stack_frame) */ mips: # make -s -j 32 ARCH=mips O=/kisskb/build/mpe_defconfig_mips-gcc13 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-13.1.0-nolibc/mips-linux/bin/mips-linux- {standard input}: Assembler messages: {standard input}:27: Error: junk at end of line, first unrecognized character is `M' {standard input}:212: Error: junk at end of line, first unrecognized character is `M' {standard input}:265: Error: junk at end of line, first unrecognized character is `M' {standard input}:338: Error: junk at end of line, first unrecognized character is `M' {standard input}:596: Error: junk at end of line, first unrecognized character is `S' {standard input}:608: Error: junk at end of line, first unrecognized character is `L' {standard input}:721: Error: junk at end of line, first unrecognized character is `L' {standard input}:806: Error: junk at end of line, first unrecognized character is `L' {standard input}:963: Error: junk at end of line, first unrecognized character is `P' {standard input}:996: Error: junk at end of line, first unrecognized character is `K' {standard input}:1161: Error: junk at end of line, first unrecognized character is `M' make[3]: *** [/kisskb/src/scripts/Makefile.build:244: arch/mips/kernel/asm-offsets.o] Error 1 riscv: # make -s -j 160 ARCH=riscv O=/kisskb/build/mpe_defconfig_riscv-gcc13 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-13.1.0-nolibc/riscv64-linux/bin/riscv64-linux- In file included from /kisskb/src/arch/riscv/kernel/asm-offsets.c:9: /kisskb/src/arch/riscv/kernel/asm-offsets.c: In function 'asm_offsets': /kisskb/src/include/linux/kbuild.h:6:9: error: invalid 'asm': invalid use of '%c' 6 | asm volatile( \ | ^~~ /kisskb/src/include/linux/kbuild.h:12:9: note: in expansion of macro '_LINE' 12 | _LINE("#define " #sym " %c0 /* " #val " */", "i" (val)) | ^~~~~ /kisskb/src/include/linux/kbuild.h:15:9: note: in expansion of macro 'DEFINE' 15 | DEFINE(sym, offsetof(struct str, mem)) | ^~~~~~ /kisskb/src/arch/riscv/kernel/asm-offsets.c:25:9: note: in expansion of macro 'OFFSET' 25 | OFFSET(TASK_THREAD_RA, task_struct, thread.ra); | ^~~~~~ /kisskb/src/include/linux/kbuild.h:6:9: error: invalid 'asm': invalid use of '%c' 6 | asm volatile( \ | ^~~ Full list here, but note there are some unrelated pre-existing failures: http://kisskb.ellerman.id.au/kisskb/head/259bba3447faaf5e5b12ae41a26a62978d4c1965/ cheers
On 03/09/2024 01:45, Michael Ellerman wrote: > Vegard Nossum <vegard.nossum@oracle.com> writes: >> Remove the sed script and compile the C source listing structs and >> offsets to an object file (instead of assembly code) that embeds C source >> directly. Then extract the C source using objcopy. >> > > I threw some builders at this and hit a few errors: Thanks, I also got the ones from kernel test robot and figured something was going a bit wrong. There are several issues: clang wants - instead of /dev/stdout as an argument to objcopy, and then gcc has some bugs that prevent the numbers from appearing correctly on some architectures, also I had an extra # in the COMMENT() macro which only resulted in an error on some architectures. I've attached a tentative v2 that fixes these issues, but I'm still trying to figure out why m68k is giving me slightly different output for include/generated/asm-offsets.h and why the arc assembler fails. In the end I'm wondering if this patch is really worth it, given all the failures and little workarounds :-| If I can sort out the last few failures I'll submit it as an RFC. > Full list here, but note there are some unrelated pre-existing failures: > http://kisskb.ellerman.id.au/kisskb/head/259bba3447faaf5e5b12ae41a26a62978d4c1965/ Thanks again, Vegard
On Tue, Sep 3, 2024 at 4:21 PM Vegard Nossum <vegard.nossum@oracle.com> wrote: > > > On 03/09/2024 01:45, Michael Ellerman wrote: > > Vegard Nossum <vegard.nossum@oracle.com> writes: > >> Remove the sed script and compile the C source listing structs and > >> offsets to an object file (instead of assembly code) that embeds C source > >> directly. Then extract the C source using objcopy. > >> > > > > I threw some builders at this and hit a few errors: > > Thanks, I also got the ones from kernel test robot and figured something > was going a bit wrong. > > There are several issues: clang wants - instead of /dev/stdout as an > argument to objcopy, and then gcc has some bugs that prevent the numbers > from appearing correctly on some architectures, also I had an extra # in > the COMMENT() macro which only resulted in an error on some > architectures. I've attached a tentative v2 that fixes these issues, but > I'm still trying to figure out why m68k is giving me slightly different > output for include/generated/asm-offsets.h and why the arc assembler > fails. > > In the end I'm wondering if this patch is really worth it, given all the > failures and little workarounds :-| If I can sort out the last few > failures I'll submit it as an RFC. This patch has zero benefit. The current way (preprocess + sed) is faster than your way (preprocess + compile + objcopy) and works independently of tool quirks. -- Best Regards Masahiro Yamada
diff --git a/Kbuild b/Kbuild index 464b34a08f51e..412b77007deb1 100644 --- a/Kbuild +++ b/Kbuild @@ -9,9 +9,9 @@ bounds-file := include/generated/bounds.h -targets := kernel/bounds.s +targets := kernel/bounds.o -$(bounds-file): kernel/bounds.s FORCE +$(bounds-file): kernel/bounds.o FORCE $(call filechk,offsets,__LINUX_BOUNDS_H__) # Generate timeconst.h @@ -27,11 +27,11 @@ $(timeconst-file): kernel/time/timeconst.bc FORCE offsets-file := include/generated/asm-offsets.h -targets += arch/$(SRCARCH)/kernel/asm-offsets.s +targets += arch/$(SRCARCH)/kernel/asm-offsets.o -arch/$(SRCARCH)/kernel/asm-offsets.s: $(timeconst-file) $(bounds-file) +arch/$(SRCARCH)/kernel/asm-offsets.o: $(timeconst-file) $(bounds-file) -$(offsets-file): arch/$(SRCARCH)/kernel/asm-offsets.s FORCE +$(offsets-file): arch/$(SRCARCH)/kernel/asm-offsets.o FORCE $(call filechk,offsets,__ASM_OFFSETS_H__) # Check for missing system calls diff --git a/arch/arm/mach-at91/Makefile b/arch/arm/mach-at91/Makefile index 794bd12ab0a8e..4d4be0000fd98 100644 --- a/arch/arm/mach-at91/Makefile +++ b/arch/arm/mach-at91/Makefile @@ -18,10 +18,10 @@ ifeq ($(CONFIG_PM_DEBUG),y) CFLAGS_pm.o += -DDEBUG endif -$(obj)/pm_data-offsets.h: $(obj)/pm_data-offsets.s FORCE +$(obj)/pm_data-offsets.h: $(obj)/pm_data-offsets.o FORCE $(call filechk,offsets,__PM_DATA_OFFSETS_H__) $(obj)/pm_suspend.o: $(obj)/pm_data-offsets.h -targets += pm_data-offsets.s +targets += pm_data-offsets.o clean-files += pm_data-offsets.h diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile index daf21127c82f1..991ffe6871d1d 100644 --- a/arch/arm/mach-omap2/Makefile +++ b/arch/arm/mach-omap2/Makefile @@ -217,12 +217,12 @@ obj-y += omap_phy_internal.o obj-$(CONFIG_MACH_OMAP2_TUSB6010) += usb-tusb6010.o -$(obj)/pm-asm-offsets.h: $(obj)/pm-asm-offsets.s FORCE +$(obj)/pm-asm-offsets.h: $(obj)/pm-asm-offsets.o FORCE $(call filechk,offsets,__TI_PM_ASM_OFFSETS_H__) $(obj)/sleep33xx.o $(obj)/sleep43xx.o: $(obj)/pm-asm-offsets.h -targets += pm-asm-offsets.s +targets += pm-asm-offsets.o clean-files += pm-asm-offsets.h obj-$(CONFIG_OMAP_IOMMU) += omap-iommu.o diff --git a/arch/arm64/kvm/Makefile b/arch/arm64/kvm/Makefile index 86a629aaf0a13..ee699a683d82c 100644 --- a/arch/arm64/kvm/Makefile +++ b/arch/arm64/kvm/Makefile @@ -28,17 +28,18 @@ kvm-y += arm.o mmu.o mmio.o psci.o hypercalls.o pvtime.o \ kvm-$(CONFIG_HW_PERF_EVENTS) += pmu-emul.o pmu.o kvm-$(CONFIG_ARM64_PTR_AUTH) += pauth.o -always-y := hyp_constants.h hyp-constants.s +always-y := hyp_constants.h hyp-constants.o define rule_gen_hyp_constants $(call filechk,offsets,__HYP_CONSTANTS_H__) endef CFLAGS_hyp-constants.o = -I $(src)/hyp/include -$(obj)/hyp-constants.s: $(src)/hyp/hyp-constants.c FORCE - $(call if_changed_dep,cc_s_c) -$(obj)/hyp_constants.h: $(obj)/hyp-constants.s FORCE +$(obj)/hyp-constants.o: $(src)/hyp/hyp-constants.c FORCE + $(call if_changed_dep,cc_o_c) + +$(obj)/hyp_constants.h: $(obj)/hyp-constants.o FORCE $(call if_changed_rule,gen_hyp_constants) obj-kvm := $(addprefix $(obj)/, $(kvm-y)) diff --git a/arch/x86/kvm/Makefile b/arch/x86/kvm/Makefile index 5494669a055a6..3b561c7e7c4f9 100644 --- a/arch/x86/kvm/Makefile +++ b/arch/x86/kvm/Makefile @@ -42,8 +42,8 @@ $(obj)/svm/vmenter.o: $(obj)/kvm-asm-offsets.h AFLAGS_vmx/vmenter.o := -iquote $(obj) $(obj)/vmx/vmenter.o: $(obj)/kvm-asm-offsets.h -$(obj)/kvm-asm-offsets.h: $(obj)/kvm-asm-offsets.s FORCE +$(obj)/kvm-asm-offsets.h: $(obj)/kvm-asm-offsets.o FORCE $(call filechk,offsets,__KVM_ASM_OFFSETS_H__) -targets += kvm-asm-offsets.s +targets += kvm-asm-offsets.o clean-files += kvm-asm-offsets.h diff --git a/arch/x86/um/Makefile b/arch/x86/um/Makefile index 36e67fc97c22f..6563503d4b25d 100644 --- a/arch/x86/um/Makefile +++ b/arch/x86/um/Makefile @@ -38,11 +38,11 @@ subarch-$(CONFIG_MODULES) += ../kernel/module.o USER_OBJS := bugs_$(BITS).o ptrace_user.o fault.o -$(obj)/user-offsets.s: c_flags = -Wp,-MD,$(depfile) $(USER_CFLAGS) \ +$(obj)/user-offsets.o: c_flags = -Wp,-MD,$(depfile) $(USER_CFLAGS) \ -Iarch/x86/include/generated -targets += user-offsets.s +targets += user-offsets.o -include/generated/user_constants.h: $(obj)/user-offsets.s FORCE +include/generated/user_constants.h: $(obj)/user-offsets.o FORCE $(call filechk,offsets,__USER_CONSTANT_H__) UNPROFILE_OBJS := stub_segv.o diff --git a/drivers/memory/Makefile b/drivers/memory/Makefile index d2e6ca9abbe02..efae95f315a12 100644 --- a/drivers/memory/Makefile +++ b/drivers/memory/Makefile @@ -34,8 +34,8 @@ ti-emif-sram-objs := ti-emif-pm.o ti-emif-sram-pm.o $(obj)/ti-emif-sram-pm.o: $(obj)/ti-emif-asm-offsets.h -$(obj)/ti-emif-asm-offsets.h: $(obj)/emif-asm-offsets.s FORCE +$(obj)/ti-emif-asm-offsets.h: $(obj)/emif-asm-offsets.o FORCE $(call filechk,offsets,__TI_EMIF_ASM_OFFSETS_H__) -targets += emif-asm-offsets.s +targets += emif-asm-offsets.o clean-files += ti-emif-asm-offsets.h diff --git a/include/linux/kbuild.h b/include/linux/kbuild.h index e7be517aaaf68..d253ae4dfd1c1 100644 --- a/include/linux/kbuild.h +++ b/include/linux/kbuild.h @@ -2,15 +2,22 @@ #ifndef __LINUX_KBUILD_H #define __LINUX_KBUILD_H -#define DEFINE(sym, val) \ - asm volatile("\n.ascii \"->" #sym " %0 " #val "\"" : : "i" (val)) +#define _LINE(x, ...) \ + asm volatile( \ + ".pushsection \".data.kbuild\"; "\ + ".ascii \"" x "\\n\"; "\ + ".popsection" : : __VA_ARGS__) -#define BLANK() asm volatile("\n.ascii \"->\"" : : ) +#define DEFINE(sym, val) \ + _LINE("#define " #sym " %c0 /* " #val " */", "i" (val)) #define OFFSET(sym, str, mem) \ DEFINE(sym, offsetof(struct str, mem)) +#define BLANK() \ + _LINE("") + #define COMMENT(x) \ - asm volatile("\n.ascii \"->#" x "\"") + _LINE("/* " #x " */") #endif diff --git a/samples/bpf/Makefile b/samples/bpf/Makefile index 3e003dd6bea09..a5d86ac8f5f57 100644 --- a/samples/bpf/Makefile +++ b/samples/bpf/Makefile @@ -270,10 +270,10 @@ $(LIBBPF_OUTPUT) $(BPFTOOL_OUTPUT): $(call msg,MKDIR,$@) $(Q)mkdir -p $@ -$(obj)/syscall_nrs.h: $(obj)/syscall_nrs.s FORCE +$(obj)/syscall_nrs.h: $(obj)/syscall_nrs.o FORCE $(call filechk,offsets,__SYSCALL_NRS_H__) -targets += syscall_nrs.s +targets += syscall_nrs.o clean-files += syscall_nrs.h FORCE: diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib index 207325eaf1d1c..f78b0b12ace26 100644 --- a/scripts/Makefile.lib +++ b/scripts/Makefile.lib @@ -583,17 +583,6 @@ quiet_cmd_zstd22_with_size = ZSTD22 $@ # ASM offsets # --------------------------------------------------------------------------- -# Default sed regexp - multiline due to syntax constraints -# -# Use [:space:] because LLVM's integrated assembler inserts <tab> around -# the .ascii directive whereas GCC keeps the <space> as-is. -define sed-offsets - 's:^[[:space:]]*\.ascii[[:space:]]*"\(.*\)".*:\1:; \ - /^->/{s:->#\(.*\):/* \1 */:; \ - s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; \ - s:->::; p;}' -endef - # Use filechk to avoid rebuilds when a header changes, but the resulting file # does not define filechk_offsets @@ -605,7 +594,7 @@ define filechk_offsets echo " * This file was generated by Kbuild"; \ echo " */"; \ echo ""; \ - sed -ne $(sed-offsets) < $<; \ + $(OBJCOPY) -j .data.kbuild -O binary $< /dev/stdout | cat; \ echo ""; \ echo "#endif" endef diff --git a/scripts/mod/Makefile b/scripts/mod/Makefile index c729bc936bae1..3c3f5e16a30a2 100644 --- a/scripts/mod/Makefile +++ b/scripts/mod/Makefile @@ -8,10 +8,10 @@ modpost-objs := modpost.o file2alias.o sumversion.o symsearch.o devicetable-offsets-file := devicetable-offsets.h -$(obj)/$(devicetable-offsets-file): $(obj)/devicetable-offsets.s FORCE +$(obj)/$(devicetable-offsets-file): $(obj)/devicetable-offsets.o FORCE $(call filechk,offsets,__DEVICETABLE_OFFSETS_H__) -targets += $(devicetable-offsets-file) devicetable-offsets.s +targets += $(devicetable-offsets-file) devicetable-offsets.o # dependencies on generated files need to be listed explicitly
In order to give assembly code access to C structs without having to hardcore member offsets, the kernel compiles a C source file listing all the structs and offsets that are needed in assembly code. Using some C preprocessor trickery and a sed script, the compiled assembly code is turned back into C preprocessor code that in turn can be used by the asssembly code. This sed script is very hard to read and understand. Remove the sed script and compile the C source listing structs and offsets to an object file (instead of assembly code) that embeds C source directly. Then extract the C source using objcopy. The resulting code is more readable, less fragile, and sligthly shorter. Note to reviewers: The 'objcopy ... /dev/stdout | cat' bit is needed to force the correct ordering of the objcopy lines vs. the surrounding echo commands; without it, objcopy will open /dev/stdout (which refers to a temporary file created by kbuild) and reset the file offset to 0. In other words, the pipe ensures that objcopy doesn't overwrite the lines that already exist in /dev/stdout. Signed-off-by: Vegard Nossum <vegard.nossum@oracle.com> --- Kbuild | 10 +++++----- arch/arm/mach-at91/Makefile | 4 ++-- arch/arm/mach-omap2/Makefile | 4 ++-- arch/arm64/kvm/Makefile | 9 +++++---- arch/x86/kvm/Makefile | 4 ++-- arch/x86/um/Makefile | 6 +++--- drivers/memory/Makefile | 4 ++-- include/linux/kbuild.h | 15 +++++++++++---- samples/bpf/Makefile | 4 ++-- scripts/Makefile.lib | 13 +------------ scripts/mod/Makefile | 4 ++-- 11 files changed, 37 insertions(+), 40 deletions(-)