Hi Waiman, [auto build test ERROR on tip/locking/core] [also build test ERROR on v4.10-rc6 next-20170201] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
url: https://github.com/0day-ci/linux/commits/Waiman-Long/locking-spinlock_debug-Change-it-to-a-mostly-fair-lock/20170202-052215 config: arm-omap2plus_defconfig (attached as .config) compiler: arm-linux-gnueabi-gcc (Debian 6.1.1-9) 6.1.1 20160705 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 # save the attached .config to linux build tree make.cross ARCH=arm All errors (new ones prefixed by >>): kernel/built-in.o: In function `do_raw_spin_lock': >> arch/arm/include/asm/cmpxchg.h:109: undefined reference to `__bad_xchg' >> kernel/built-in.o:(.debug_addr+0x28c6c): undefined reference to `__bad_xchg' vim +109 arch/arm/include/asm/cmpxchg.h 9f97da78 David Howells 2012-03-28 93 asm volatile("@ __xchg1\n" 9f97da78 David Howells 2012-03-28 94 " swpb %0, %1, [%2]" 9f97da78 David Howells 2012-03-28 95 : "=&r" (ret) 9f97da78 David Howells 2012-03-28 96 : "r" (x), "r" (ptr) 9f97da78 David Howells 2012-03-28 97 : "memory", "cc"); 9f97da78 David Howells 2012-03-28 98 break; 9f97da78 David Howells 2012-03-28 99 case 4: 9f97da78 David Howells 2012-03-28 100 asm volatile("@ __xchg4\n" 9f97da78 David Howells 2012-03-28 101 " swp %0, %1, [%2]" 9f97da78 David Howells 2012-03-28 102 : "=&r" (ret) 9f97da78 David Howells 2012-03-28 103 : "r" (x), "r" (ptr) 9f97da78 David Howells 2012-03-28 104 : "memory", "cc"); 9f97da78 David Howells 2012-03-28 105 break; 9f97da78 David Howells 2012-03-28 106 #endif 9f97da78 David Howells 2012-03-28 107 default: 31cd08c3 Russell King 2015-05-19 108 /* Cause a link-time error, the xchg() size is not supported */ 9f97da78 David Howells 2012-03-28 @109 __bad_xchg(ptr, size), ret = 0; 9f97da78 David Howells 2012-03-28 110 break; 9f97da78 David Howells 2012-03-28 111 } 9f97da78 David Howells 2012-03-28 112 9f97da78 David Howells 2012-03-28 113 return ret; 9f97da78 David Howells 2012-03-28 114 } 9f97da78 David Howells 2012-03-28 115 0ca326de Will Deacon 2015-08-06 116 #define xchg_relaxed(ptr, x) ({ \ e001bbae Russell King 2015-05-26 117 (__typeof__(*(ptr)))__xchg((unsigned long)(x), (ptr), \ :::::: The code at line 109 was first introduced by commit :::::: 9f97da78bf018206fb623cd351d454af2f105fe0 Disintegrate asm/system.h for ARM :::::: TO: David Howells <dhowe...@redhat.com> :::::: CC: David Howells <dhowe...@redhat.com> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
.config.gz
Description: application/gzip
