Hello, On Thu, Mar 15, 2018 at 12:51 PM, kbuild test robot <l...@intel.com> wrote: > > Hi Joel, > > Thank you for the patch! Yet something to improve: > > [auto build test ERROR on linus/master] > [also build test ERROR on v4.16-rc5 next-20180315] > [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/Joel-Fernandes/tracing-Improve-design-of-preemptirq-tracepoints-and-its-users/20180316-012211 > config: i386-randconfig-x006-201810 (attached as .config) > compiler: gcc-7 (Debian 7.3.0-1) 7.3.0 > reproduce: > # save the attached .config to linux build tree > make ARCH=i386 > > All errors (new ones prefixed by >>): > > kernel//locking/lockdep.c: In function 'lockdep_init': > >> kernel//locking/lockdep.c:4325:2: error: implicit declaration of function > >> 'register_trace_irq_disable'; did you mean 'trace_irq_disable'? > >> [-Werror=implicit-function-declaration] > register_trace_irq_disable(lockdep_hardirqs_off, NULL); > ^~~~~~~~~~~~~~~~~~~~~~~~~~
The reason for this is PREEMPTIRQ_TRACEPOINTS depends on FTRACE which is turned off in the config. Its a combination I hadn't tested in my matrix. It causes build errors in in lockdep code that tries to register the lockdep hooks. I'll fix it in the next rev. Thanks. - Joel
