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: x86_64-randconfig-x018-201736 (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=x86_64 All errors (new ones prefixed by >>): kernel//trace/ring_buffer_benchmark.c: In function 'ring_buffer_producer': >> kernel//trace/ring_buffer_benchmark.c:253:12: error: too few arguments to function 'ring_buffer_lock_reserve' event = ring_buffer_lock_reserve(buffer, 10); ^~~~~~~~~~~~~~~~~~~~~~~~ In file included from kernel//trace/ring_buffer_benchmark.c:6:0: include/linux/ring_buffer.h:115:27: note: declared here struct ring_buffer_event *ring_buffer_lock_reserve(struct ring_buffer *buffer, ^~~~~~~~~~~~~~~~~~~~~~~~ vim +/ring_buffer_lock_reserve +253 kernel//trace/ring_buffer_benchmark.c 5092dbc96 Steven Rostedt 2009-05-05 228 5092dbc96 Steven Rostedt 2009-05-05 229 static void ring_buffer_producer(void) 5092dbc96 Steven Rostedt 2009-05-05 230 { da194930e Tina Ruchandani 2015-01-28 231 ktime_t start_time, end_time, timeout; 5092dbc96 Steven Rostedt 2009-05-05 232 unsigned long long time; 5092dbc96 Steven Rostedt 2009-05-05 233 unsigned long long entries; 5092dbc96 Steven Rostedt 2009-05-05 234 unsigned long long overruns; 5092dbc96 Steven Rostedt 2009-05-05 235 unsigned long missed = 0; 5092dbc96 Steven Rostedt 2009-05-05 236 unsigned long hit = 0; 5092dbc96 Steven Rostedt 2009-05-05 237 unsigned long avg; 5092dbc96 Steven Rostedt 2009-05-05 238 int cnt = 0; 5092dbc96 Steven Rostedt 2009-05-05 239 5092dbc96 Steven Rostedt 2009-05-05 240 /* 5092dbc96 Steven Rostedt 2009-05-05 241 * Hammer the buffer for 10 secs (this may 5092dbc96 Steven Rostedt 2009-05-05 242 * make the system stall) 5092dbc96 Steven Rostedt 2009-05-05 243 */ 4b221f031 Steven Rostedt 2009-06-17 244 trace_printk("Starting ring buffer hammer\n"); da194930e Tina Ruchandani 2015-01-28 245 start_time = ktime_get(); da194930e Tina Ruchandani 2015-01-28 246 timeout = ktime_add_ns(start_time, RUN_TIME * NSEC_PER_SEC); 5092dbc96 Steven Rostedt 2009-05-05 247 do { 5092dbc96 Steven Rostedt 2009-05-05 248 struct ring_buffer_event *event; 5092dbc96 Steven Rostedt 2009-05-05 249 int *entry; a6f0eb6ad Steven Rostedt 2009-11-11 250 int i; 5092dbc96 Steven Rostedt 2009-05-05 251 a6f0eb6ad Steven Rostedt 2009-11-11 252 for (i = 0; i < write_iteration; i++) { 5092dbc96 Steven Rostedt 2009-05-05 @253 event = ring_buffer_lock_reserve(buffer, 10); 5092dbc96 Steven Rostedt 2009-05-05 254 if (!event) { 5092dbc96 Steven Rostedt 2009-05-05 255 missed++; 5092dbc96 Steven Rostedt 2009-05-05 256 } else { 5092dbc96 Steven Rostedt 2009-05-05 257 hit++; 5092dbc96 Steven Rostedt 2009-05-05 258 entry = ring_buffer_event_data(event); 5092dbc96 Steven Rostedt 2009-05-05 259 *entry = smp_processor_id(); 5092dbc96 Steven Rostedt 2009-05-05 260 ring_buffer_unlock_commit(buffer, event); 5092dbc96 Steven Rostedt 2009-05-05 261 } a6f0eb6ad Steven Rostedt 2009-11-11 262 } da194930e Tina Ruchandani 2015-01-28 263 end_time = ktime_get(); 5092dbc96 Steven Rostedt 2009-05-05 264 0574ea421 Steven Rostedt 2009-05-07 265 cnt++; 0574ea421 Steven Rostedt 2009-05-07 266 if (consumer && !(cnt % wakeup_interval)) 5092dbc96 Steven Rostedt 2009-05-05 267 wake_up_process(consumer); 5092dbc96 Steven Rostedt 2009-05-05 268 :::::: The code at line 253 was first introduced by commit :::::: 5092dbc96f3acdac5433b27c06860352dc6d23b9 ring-buffer: add benchmark and tester :::::: TO: Steven Rostedt <srostedt@xxxxxxxxxx> :::::: CC: Steven Rostedt <rostedt@xxxxxxxxxxx> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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