Hi Wang, [auto build test WARNING on tip/perf/core] [also build test WARNING on v4.4 next-20160121] [if your patch is applied to the wrong git tree, please drop us a note to help improving the system]
url: https://github.com/0day-ci/linux/commits/Wang-Nan/perf-core-Get-rid-of-uses-dynamic-stack-allocation-warning/20160122-145515 config: i386-tinyconfig (attached as .config) reproduce: # save the attached .config to linux build tree make ARCH=i386 All warnings (new ones prefixed by >>): kernel/events/core.c: In function 'perf_event_read_event': >> kernel/events/core.c:5571:2: warning: ISO C90 forbids mixed declarations and >> code [-Wdeclaration-after-statement] struct perf_read_event read_event = { ^ kernel/events/core.c: In function 'perf_event_task_output': kernel/events/core.c:5695:2: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement] struct task_struct *task = task_event->task; ^ kernel/events/core.c: In function 'perf_event_comm_output': kernel/events/core.c:5791:2: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement] int size = comm_event->event_id.header.size; ^ kernel/events/core.c: In function 'perf_event_mmap_output': kernel/events/core.c:5904:2: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement] int size = mmap_event->event_id.header.size; ^ kernel/events/core.c: In function 'perf_event_aux_event': kernel/events/core.c:6109:2: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement] struct perf_aux_event { ^ kernel/events/core.c: In function 'perf_log_lost_samples': kernel/events/core.c:6145:2: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement] int ret; ^ kernel/events/core.c: In function 'perf_event_switch_output': kernel/events/core.c:6196:2: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement] int ret; ^ kernel/events/core.c: In function 'perf_log_throttle': kernel/events/core.c:6264:2: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement] int ret; ^ kernel/events/core.c: In function 'perf_log_itrace_start': kernel/events/core.c:6301:2: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement] struct perf_aux_event { ^ kernel/events/core.c: In function 'perf_bp_event': kernel/events/core.c:7078:2: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement] struct pt_regs *regs = data; ^ kernel/events/core.c: In function 'perf_swevent_hrtimer': kernel/events/core.c:7095:2: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement] struct pt_regs *regs; ^ vim +5571 kernel/events/core.c cdd6c482 kernel/perf_event.c Ingo Molnar 2009-09-21 5555 * read event_id 38b200d6 kernel/perf_counter.c Peter Zijlstra 2009-06-23 5556 */ 38b200d6 kernel/perf_counter.c Peter Zijlstra 2009-06-23 5557 38b200d6 kernel/perf_counter.c Peter Zijlstra 2009-06-23 5558 struct perf_read_event { 38b200d6 kernel/perf_counter.c Peter Zijlstra 2009-06-23 5559 struct perf_event_header header; 38b200d6 kernel/perf_counter.c Peter Zijlstra 2009-06-23 5560 38b200d6 kernel/perf_counter.c Peter Zijlstra 2009-06-23 5561 u32 pid; 38b200d6 kernel/perf_counter.c Peter Zijlstra 2009-06-23 5562 u32 tid; 38b200d6 kernel/perf_counter.c Peter Zijlstra 2009-06-23 5563 }; 38b200d6 kernel/perf_counter.c Peter Zijlstra 2009-06-23 5564 38b200d6 kernel/perf_counter.c Peter Zijlstra 2009-06-23 5565 static void cdd6c482 kernel/perf_event.c Ingo Molnar 2009-09-21 5566 perf_event_read_event(struct perf_event *event, 38b200d6 kernel/perf_counter.c Peter Zijlstra 2009-06-23 5567 struct task_struct *task) 38b200d6 kernel/perf_counter.c Peter Zijlstra 2009-06-23 5568 { 38b200d6 kernel/perf_counter.c Peter Zijlstra 2009-06-23 5569 struct perf_output_handle handle; 3ff786eb kernel/events/core.c Wang Nan 2016-01-22 5570 DEFINE_PERF_SAMPLE_DATA_ALIGNED(psample, temp); dfc65094 kernel/perf_counter.c Ingo Molnar 2009-09-21 @5571 struct perf_read_event read_event = { 38b200d6 kernel/perf_counter.c Peter Zijlstra 2009-06-23 5572 .header = { cdd6c482 kernel/perf_event.c Ingo Molnar 2009-09-21 5573 .type = PERF_RECORD_READ, 38b200d6 kernel/perf_counter.c Peter Zijlstra 2009-06-23 5574 .misc = 0, c320c7b7 kernel/perf_event.c Arnaldo Carvalho de Melo 2010-10-20 5575 .size = sizeof(read_event) + event->read_size, 38b200d6 kernel/perf_counter.c Peter Zijlstra 2009-06-23 5576 }, cdd6c482 kernel/perf_event.c Ingo Molnar 2009-09-21 5577 .pid = perf_event_pid(event, task), cdd6c482 kernel/perf_event.c Ingo Molnar 2009-09-21 5578 .tid = perf_event_tid(event, task), 38b200d6 kernel/perf_counter.c Peter Zijlstra 2009-06-23 5579 }; :::::: The code at line 5571 was first introduced by commit :::::: dfc65094d0313cc48969fa60bcf33d693aeb05a7 perf_counter: Rename 'event' to event_id/hw_event :::::: TO: Ingo Molnar <mi...@elte.hu> :::::: CC: Ingo Molnar <mi...@elte.hu> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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