Hi, This is likely due to the fact that the s390 bits bits were not pulled into -mm here: http://lkml.iu.edu/hypermail/linux/kernel/1607.0/03114.html However, I do see them in linux-next, I think from the s390 tree. So perhaps, that patch can be pulled in here as well? Thanks, -Jason On 07/13/2016 01:19 PM, kbuild test robot wrote: > tree: https://git.kernel.org/pub/scm/linux/kernel/git/mhocko/mm.git since-4.6 > head: 92b971babd4ca0b796a247752839f82b6f77a5e7 > commit: 92b971babd4ca0b796a247752839f82b6f77a5e7 [827/827] jump_label: remove bug.h, atomic.h dependencies for HAVE_JUMP_LABEL > config: s390-default_defconfig (attached as .config) > compiler: s390x-linux-gnu-gcc (Debian 5.3.1-8) 5.3.1 20160205 > reproduce: > wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross > chmod +x ~/bin/make.cross > git checkout 92b971babd4ca0b796a247752839f82b6f77a5e7 > # save the attached .config to linux build tree > make.cross ARCH=s390 > > All error/warnings (new ones prefixed by >>): > > In file included from include/linux/compiler.h:60:0, > from include/uapi/linux/stddef.h:1, > from include/linux/stddef.h:4, > from include/uapi/linux/posix_types.h:4, > from include/uapi/linux/types.h:13, > from include/linux/types.h:5, > from include/linux/jump_label.h:77, > from arch/s390/lib/uaccess.c:10: > arch/s390/include/asm/jump_label.h: In function 'arch_static_branch': >>> arch/s390/include/asm/jump_label.h:17:32: error: expected ':' before '__stringify' > asm_volatile_goto("0: brcl 0,"__stringify(JUMP_LABEL_NOP_OFFSET)"\n" > ^ > include/linux/compiler-gcc.h:243:47: note: in definition of macro 'asm_volatile_goto' > #define asm_volatile_goto(x...) do { asm goto(x); asm (""); } while (0) > ^ > In file included from include/linux/jump_label.h:105:0, > from arch/s390/lib/uaccess.c:10: >>> arch/s390/include/asm/jump_label.h:25:1: warning: label 'label' defined but not used [-Wunused-label] > label: > ^ > > vim +17 arch/s390/include/asm/jump_label.h > > d5caa4db Heiko Carstens 2015-01-29 11 /* > d5caa4db Heiko Carstens 2015-01-29 12 * We use a brcl 0,2 instruction for jump labels at compile time so it > d5caa4db Heiko Carstens 2015-01-29 13 * can be easily distinguished from a hotpatch generated instruction. > d5caa4db Heiko Carstens 2015-01-29 14 */ > 11276d53 Peter Zijlstra 2015-07-24 15 static __always_inline bool arch_static_branch(struct static_key *key, bool branch) > 5373db88 Jan Glauber 2011-03-16 16 { > d5caa4db Heiko Carstens 2015-01-29 @17 asm_volatile_goto("0: brcl 0,"__stringify(JUMP_LABEL_NOP_OFFSET)"\n" > 5373db88 Jan Glauber 2011-03-16 18 ".pushsection __jump_table, \"aw\"\n" > 5a79859a Heiko Carstens 2015-02-12 19 ".balign 8\n" > 5a79859a Heiko Carstens 2015-02-12 20 ".quad 0b, %l[label], %0\n" > 5373db88 Jan Glauber 2011-03-16 21 ".popsection\n" > 11276d53 Peter Zijlstra 2015-07-24 22 : : "X" (&((char *)key)[branch]) : : label); > 11276d53 Peter Zijlstra 2015-07-24 23 > 11276d53 Peter Zijlstra 2015-07-24 24 return false; > 11276d53 Peter Zijlstra 2015-07-24 @25 label: > 11276d53 Peter Zijlstra 2015-07-24 26 return true; > 11276d53 Peter Zijlstra 2015-07-24 27 } > 11276d53 Peter Zijlstra 2015-07-24 28 > > :::::: The code at line 17 was first introduced by commit > :::::: d5caa4dbf9bd2ad8cd7f6be0ca76722be947182b s390/jump label: use different nop instruction > > :::::: TO: Heiko Carstens <heiko.carstens@xxxxxxxxxx> > :::::: CC: Martin Schwidefsky <schwidefsky@xxxxxxxxxx> > > --- > 0-DAY kernel test infrastructure Open Source Technology Center > https://lists.01.org/pipermail/kbuild-all Intel Corporation > -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>