CC: [email protected]
CC: [email protected]
TO: Daniel Bristot de Oliveira <[email protected]>
CC: "Steven Rostedt (VMware)" <[email protected]>

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 
master
head:   251a1524293d0a90c4d5060f65f42a3016280049
commit: f46b16520a087e892a189db9c23ccf7e9bb5fa69 trace/hwlat: Implement the 
per-cpu mode
date:   6 weeks ago
:::::: branch date: 13 hours ago
:::::: commit date: 6 weeks ago
compiler: mips64-linux-gcc (GCC) 10.3.0

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <[email protected]>


cppcheck warnings: (new ones prefixed by >>)
>> kernel/trace/trace_hwlat.c:479:2: warning: %d in format string (no. 1) 
>> requires 'int' but the argument type is 'unsigned int'. 
>> [invalidPrintfArgType_sint]
    snprintf(comm, 24, "hwlatd/%d", cpu);
    ^

vim +479 kernel/trace/trace_hwlat.c

f46b16520a087e Daniel Bristot de Oliveira 2021-06-22  470  
f46b16520a087e Daniel Bristot de Oliveira 2021-06-22  471  /*
f46b16520a087e Daniel Bristot de Oliveira 2021-06-22  472   * start_cpu_kthread 
- Start a hwlat cpu kthread
f46b16520a087e Daniel Bristot de Oliveira 2021-06-22  473   */
f46b16520a087e Daniel Bristot de Oliveira 2021-06-22  474  static int 
start_cpu_kthread(unsigned int cpu)
f46b16520a087e Daniel Bristot de Oliveira 2021-06-22  475  {
f46b16520a087e Daniel Bristot de Oliveira 2021-06-22  476       struct 
task_struct *kthread;
f46b16520a087e Daniel Bristot de Oliveira 2021-06-22  477       char comm[24];
f46b16520a087e Daniel Bristot de Oliveira 2021-06-22  478  
f46b16520a087e Daniel Bristot de Oliveira 2021-06-22 @479       snprintf(comm, 
24, "hwlatd/%d", cpu);
f46b16520a087e Daniel Bristot de Oliveira 2021-06-22  480  
f46b16520a087e Daniel Bristot de Oliveira 2021-06-22  481       kthread = 
kthread_create_on_cpu(kthread_fn, NULL, cpu, comm);
f46b16520a087e Daniel Bristot de Oliveira 2021-06-22  482       if 
(IS_ERR(kthread)) {
f46b16520a087e Daniel Bristot de Oliveira 2021-06-22  483               
pr_err(BANNER "could not start sampling thread\n");
f46b16520a087e Daniel Bristot de Oliveira 2021-06-22  484               return 
-ENOMEM;
f46b16520a087e Daniel Bristot de Oliveira 2021-06-22  485       }
f46b16520a087e Daniel Bristot de Oliveira 2021-06-22  486  
f46b16520a087e Daniel Bristot de Oliveira 2021-06-22  487       
per_cpu(hwlat_per_cpu_data, cpu).kthread = kthread;
f46b16520a087e Daniel Bristot de Oliveira 2021-06-22  488       
wake_up_process(kthread);
f46b16520a087e Daniel Bristot de Oliveira 2021-06-22  489  
f46b16520a087e Daniel Bristot de Oliveira 2021-06-22  490       return 0;
f46b16520a087e Daniel Bristot de Oliveira 2021-06-22  491  }
f46b16520a087e Daniel Bristot de Oliveira 2021-06-22  492  

---
0-DAY CI Kernel Test Service, Intel Corporation
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