Hi Tom, [auto build test ERROR on tip/perf/core] [also build test ERROR on v4.13 next-20170907] [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/Tom-Zanussi/tracing-Inter-event-e-g-latency-support/20170908-054142 config: xtensa-allyesconfig (attached as .config) compiler: xtensa-linux-gcc (GCC) 4.9.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree make.cross ARCH=xtensa All errors (new ones prefixed by >>): kernel/trace/ring_buffer.c: In function 'rb_write_something': >> kernel/trace/ring_buffer.c:4836:10: error: too few arguments to function >> 'ring_buffer_lock_reserve' event = ring_buffer_lock_reserve(data->buffer, len); ^ kernel/trace/ring_buffer.c:2846:1: note: declared here ring_buffer_lock_reserve(struct ring_buffer *buffer, unsigned long length, ^ vim +/ring_buffer_lock_reserve +4836 kernel/trace/ring_buffer.c 6c43e554a2 Steven Rostedt (Red Hat 2013-03-15 4813) 6c43e554a2 Steven Rostedt (Red Hat 2013-03-15 4814) static __init int rb_write_something(struct rb_test_data *data, bool nested) 6c43e554a2 Steven Rostedt (Red Hat 2013-03-15 4815) { 6c43e554a2 Steven Rostedt (Red Hat 2013-03-15 4816) struct ring_buffer_event *event; 6c43e554a2 Steven Rostedt (Red Hat 2013-03-15 4817) struct rb_item *item; 6c43e554a2 Steven Rostedt (Red Hat 2013-03-15 4818) bool started; 6c43e554a2 Steven Rostedt (Red Hat 2013-03-15 4819) int event_len; 6c43e554a2 Steven Rostedt (Red Hat 2013-03-15 4820) int size; 6c43e554a2 Steven Rostedt (Red Hat 2013-03-15 4821) int len; 6c43e554a2 Steven Rostedt (Red Hat 2013-03-15 4822) int cnt; 6c43e554a2 Steven Rostedt (Red Hat 2013-03-15 4823) 6c43e554a2 Steven Rostedt (Red Hat 2013-03-15 4824) /* Have nested writes different that what is written */ 6c43e554a2 Steven Rostedt (Red Hat 2013-03-15 4825) cnt = data->cnt + (nested ? 27 : 0); 6c43e554a2 Steven Rostedt (Red Hat 2013-03-15 4826) 6c43e554a2 Steven Rostedt (Red Hat 2013-03-15 4827) /* Multiply cnt by ~e, to make some unique increment */ 6c43e554a2 Steven Rostedt (Red Hat 2013-03-15 4828) size = (data->cnt * 68 / 25) % (sizeof(rb_string) - 1); 6c43e554a2 Steven Rostedt (Red Hat 2013-03-15 4829) 6c43e554a2 Steven Rostedt (Red Hat 2013-03-15 4830) len = size + sizeof(struct rb_item); 6c43e554a2 Steven Rostedt (Red Hat 2013-03-15 4831) 6c43e554a2 Steven Rostedt (Red Hat 2013-03-15 4832) started = rb_test_started; 6c43e554a2 Steven Rostedt (Red Hat 2013-03-15 4833) /* read rb_test_started before checking buffer enabled */ 6c43e554a2 Steven Rostedt (Red Hat 2013-03-15 4834) smp_rmb(); 6c43e554a2 Steven Rostedt (Red Hat 2013-03-15 4835) 6c43e554a2 Steven Rostedt (Red Hat 2013-03-15 @4836) event = ring_buffer_lock_reserve(data->buffer, len); 6c43e554a2 Steven Rostedt (Red Hat 2013-03-15 4837) if (!event) { 6c43e554a2 Steven Rostedt (Red Hat 2013-03-15 4838) /* Ignore dropped events before test starts. */ 6c43e554a2 Steven Rostedt (Red Hat 2013-03-15 4839) if (started) { 6c43e554a2 Steven Rostedt (Red Hat 2013-03-15 4840) if (nested) 6c43e554a2 Steven Rostedt (Red Hat 2013-03-15 4841) data->bytes_dropped += len; 6c43e554a2 Steven Rostedt (Red Hat 2013-03-15 4842) else 6c43e554a2 Steven Rostedt (Red Hat 2013-03-15 4843) data->bytes_dropped_nested += len; 6c43e554a2 Steven Rostedt (Red Hat 2013-03-15 4844) } 6c43e554a2 Steven Rostedt (Red Hat 2013-03-15 4845) return len; 6c43e554a2 Steven Rostedt (Red Hat 2013-03-15 4846) } 6c43e554a2 Steven Rostedt (Red Hat 2013-03-15 4847) 6c43e554a2 Steven Rostedt (Red Hat 2013-03-15 4848) event_len = ring_buffer_event_length(event); 6c43e554a2 Steven Rostedt (Red Hat 2013-03-15 4849) 6c43e554a2 Steven Rostedt (Red Hat 2013-03-15 4850) if (RB_WARN_ON(data->buffer, event_len < len)) 6c43e554a2 Steven Rostedt (Red Hat 2013-03-15 4851) goto out; 6c43e554a2 Steven Rostedt (Red Hat 2013-03-15 4852) 6c43e554a2 Steven Rostedt (Red Hat 2013-03-15 4853) item = ring_buffer_event_data(event); 6c43e554a2 Steven Rostedt (Red Hat 2013-03-15 4854) item->size = size; 6c43e554a2 Steven Rostedt (Red Hat 2013-03-15 4855) memcpy(item->str, rb_string, size); 6c43e554a2 Steven Rostedt (Red Hat 2013-03-15 4856) 6c43e554a2 Steven Rostedt (Red Hat 2013-03-15 4857) if (nested) { 6c43e554a2 Steven Rostedt (Red Hat 2013-03-15 4858) data->bytes_alloc_nested += event_len; 6c43e554a2 Steven Rostedt (Red Hat 2013-03-15 4859) data->bytes_written_nested += len; 6c43e554a2 Steven Rostedt (Red Hat 2013-03-15 4860) data->events_nested++; 6c43e554a2 Steven Rostedt (Red Hat 2013-03-15 4861) if (!data->min_size_nested || len < data->min_size_nested) 6c43e554a2 Steven Rostedt (Red Hat 2013-03-15 4862) data->min_size_nested = len; 6c43e554a2 Steven Rostedt (Red Hat 2013-03-15 4863) if (len > data->max_size_nested) 6c43e554a2 Steven Rostedt (Red Hat 2013-03-15 4864) data->max_size_nested = len; 6c43e554a2 Steven Rostedt (Red Hat 2013-03-15 4865) } else { 6c43e554a2 Steven Rostedt (Red Hat 2013-03-15 4866) data->bytes_alloc += event_len; 6c43e554a2 Steven Rostedt (Red Hat 2013-03-15 4867) data->bytes_written += len; 6c43e554a2 Steven Rostedt (Red Hat 2013-03-15 4868) data->events++; 6c43e554a2 Steven Rostedt (Red Hat 2013-03-15 4869) if (!data->min_size || len < data->min_size) 6c43e554a2 Steven Rostedt (Red Hat 2013-03-15 4870) data->max_size = len; 6c43e554a2 Steven Rostedt (Red Hat 2013-03-15 4871) if (len > data->max_size) 6c43e554a2 Steven Rostedt (Red Hat 2013-03-15 4872) data->max_size = len; 6c43e554a2 Steven Rostedt (Red Hat 2013-03-15 4873) } 6c43e554a2 Steven Rostedt (Red Hat 2013-03-15 4874) 6c43e554a2 Steven Rostedt (Red Hat 2013-03-15 4875) out: 6c43e554a2 Steven Rostedt (Red Hat 2013-03-15 4876) ring_buffer_unlock_commit(data->buffer, event); 6c43e554a2 Steven Rostedt (Red Hat 2013-03-15 4877) 6c43e554a2 Steven Rostedt (Red Hat 2013-03-15 4878) return 0; 6c43e554a2 Steven Rostedt (Red Hat 2013-03-15 4879) } 6c43e554a2 Steven Rostedt (Red Hat 2013-03-15 4880) :::::: The code at line 4836 was first introduced by commit :::::: 6c43e554a2a5c1f2caf1733d46719bc58de3e37b ring-buffer: Add ring buffer startup selftest :::::: TO: Steven Rostedt (Red Hat) <rost...@goodmis.org> :::::: CC: Steven Rostedt <rost...@goodmis.org> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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