On Mon, 2 Oct 2017 08:18:50 +0800 kbuild test robot <lkp@xxxxxxxxx> wrote: > Hi Vitaly, > > [auto build test WARNING on linus/master] > [also build test WARNING on v4.14-rc3 next-20170929] > [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/Vitaly-Kuznetsov/hyper-v-trace-vmbus_on_msg_dpc/20171002-062040 > config: i386-randconfig-x017-201740 (attached as .config) > compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901 > reproduce: > # save the attached .config to linux build tree > make ARCH=i386 > > All warnings (new ones prefixed by >>): > > In file included from include/trace/define_trace.h:95:0, > from drivers/hv/hv_trace.h:29, > from drivers/hv/hv_trace.c:4: > include/trace/trace_events.h:759:13: warning: 'print_fmt_vmbus_hdr_msg' defined but not used [-Wunused-variable] > static char print_fmt_##call[] = print; \ > ^ > >> drivers/hv/./hv_trace.h:9:1: note: in expansion of macro 'DECLARE_EVENT_CLASS' Interesting. I'm wondering if this happens because the class "print" is not used. Actually, I think the default print should be used by one event, and if other events need to be made that change the print, it should use the DEFINE_EVENT_PRINT() But this may be moot because I think Stephen Hemminger made it back to DEFINE_EVENT()s. -- Steve > DECLARE_EVENT_CLASS(vmbus_hdr_msg, > ^~~~~~~~~~~~~~~~~~~ > In file included from include/trace/define_trace.h:95:0, > from drivers/hv/hv_trace.h:29, > from drivers/hv/hv_trace.c:4: > include/trace/trace_events.h:363:37: warning: 'trace_event_type_funcs_vmbus_hdr_msg' defined but not used [-Wunused-variable] > static struct trace_event_functions trace_event_type_funcs_##call = { \ > ^ > >> drivers/hv/./hv_trace.h:9:1: note: in expansion of macro 'DECLARE_EVENT_CLASS' > DECLARE_EVENT_CLASS(vmbus_hdr_msg, > ^~~~~~~~~~~~~~~~~~~ > > vim +/DECLARE_EVENT_CLASS +9 drivers/hv/./hv_trace.h > > 8 > > 9 DECLARE_EVENT_CLASS(vmbus_hdr_msg, > 10 TP_PROTO(const struct vmbus_channel_message_header *hdr), > 11 TP_ARGS(hdr), > 12 TP_STRUCT__entry(__field(unsigned int, msgtype)), > 13 TP_fast_assign(__entry->msgtype = hdr->msgtype;), > 14 TP_printk("msgtype=%d", __entry->msgtype) > 15 ); > 16 > > --- > 0-DAY kernel test infrastructure Open Source Technology Center > https://lists.01.org/pipermail/kbuild-all Intel Corporation _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
