Hi Binoy, [auto build test ERROR on tip/perf/core] [also build test ERROR on v4.8-rc3 next-20160819] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] [Suggest to use git(>=2.9.0) format-patch --base=<commit> (or --base=auto for convenience) to record what (public, well-known) commit your patch series was built on] [Check https://git-scm.com/docs/git-format-patch for more information]
url: https://github.com/0day-ci/linux/commits/Binoy-Jayan/tracing-Deference-pointers-without-RCU-checks/20160818-151235 config: powerpc-c2k_defconfig (attached as .config) compiler: powerpc-linux-gnu-gcc (Debian 5.4.0-6) 5.4.0 20160609 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=powerpc All errors (new ones prefixed by >>): kernel/built-in.o: In function `atomic_read': >> arch/powerpc/include/asm/atomic.h:37: undefined reference to >> `__tracepoint_latency_hrtimer_interrupt' >> arch/powerpc/include/asm/atomic.h:37: undefined reference to >> `__tracepoint_latency_hrtimer_interrupt' kernel/built-in.o: In function `__hrtimer_run_queues': kernel/time/hrtimer.c:1298: undefined reference to `__tracepoint_latency_hrtimer_interrupt' kernel/built-in.o: In function `trace_missed_hrtimer': kernel/time/hrtimer.c:1283: undefined reference to `__tracepoint_latency_hrtimer_interrupt' vim +37 arch/powerpc/include/asm/atomic.h dc53617c arch/powerpc/include/asm/atomic.h Boqun Feng 2016-01-06 31 }) dc53617c arch/powerpc/include/asm/atomic.h Boqun Feng 2016-01-06 32 9f0cbea0 include/asm-powerpc/atomic.h Segher Boessenkool 2007-08-11 33 static __inline__ int atomic_read(const atomic_t *v) 9f0cbea0 include/asm-powerpc/atomic.h Segher Boessenkool 2007-08-11 34 { 9f0cbea0 include/asm-powerpc/atomic.h Segher Boessenkool 2007-08-11 35 int t; 9f0cbea0 include/asm-powerpc/atomic.h Segher Boessenkool 2007-08-11 36 9f0cbea0 include/asm-powerpc/atomic.h Segher Boessenkool 2007-08-11 @37 __asm__ __volatile__("lwz%U1%X1 %0,%1" : "=r"(t) : "m"(v->counter)); 9f0cbea0 include/asm-powerpc/atomic.h Segher Boessenkool 2007-08-11 38 9f0cbea0 include/asm-powerpc/atomic.h Segher Boessenkool 2007-08-11 39 return t; 9f0cbea0 include/asm-powerpc/atomic.h Segher Boessenkool 2007-08-11 40 } :::::: The code at line 37 was first introduced by commit :::::: 9f0cbea0d8cc47801b853d3c61d0e17475b0cc89 [POWERPC] Implement atomic{, 64}_{read, write}() without volatile :::::: TO: Segher Boessenkool <seg...@kernel.crashing.org> :::::: CC: Paul Mackerras <pau...@samba.org> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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