Re: [PATCH 6/7] tracing: add support for function argument to graph tracer

[kernel test robot <lkp@intel.com>]

Hi Sven,

kernel test robot noticed the following build errors:

[auto build test ERROR on s390/features]
[also build test ERROR on tip/x86/core linus/master v6.11-rc6]
[cannot apply to rostedt-trace/for-next rostedt-trace/for-next-urgent next-20240904]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Sven-Schnelle/tracing-add-ftrace_regs-to-function_graph_enter/20240904-150232
base:   https://git.kernel.org/pub/scm/linux/kernel/git/s390/linux.git features
patch link:    https://lore.kernel.org/r/20240904065908.1009086-7-svens%40linux.ibm.com
patch subject: [PATCH 6/7] tracing: add support for function argument to graph tracer
config: openrisc-allnoconfig (https://download.01.org/0day-ci/archive/20240905/202409051539.ZmGpuZIP-lkp@intel.com/config)
compiler: or1k-linux-gcc (GCC) 14.1.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240905/202409051539.ZmGpuZIP-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202409051539.ZmGpuZIP-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from include/linux/perf_event.h:52,
                    from include/linux/trace_events.h:10,
                    from include/trace/syscall.h:7,
                    from include/linux/syscalls.h:93,
                    from kernel/time/time.c:33:
>> include/linux/ftrace.h:1013:28: error: field 'regs' has incomplete type
    1013 |         struct ftrace_regs regs;
         |                            ^~~~
--
   In file included from include/linux/perf_event.h:52,
                    from include/linux/trace_events.h:10,
                    from include/trace/syscall.h:7,
                    from include/linux/syscalls.h:93,
                    from kernel/time/hrtimer.c:30:
>> include/linux/ftrace.h:1013:28: error: field 'regs' has incomplete type
    1013 |         struct ftrace_regs regs;
         |                            ^~~~
   kernel/time/hrtimer.c:121:35: warning: initialized field overwritten [-Woverride-init]
     121 |         [CLOCK_REALTIME]        = HRTIMER_BASE_REALTIME,
         |                                   ^~~~~~~~~~~~~~~~~~~~~
   kernel/time/hrtimer.c:121:35: note: (near initialization for 'hrtimer_clock_to_base_table[0]')
   kernel/time/hrtimer.c:122:35: warning: initialized field overwritten [-Woverride-init]
     122 |         [CLOCK_MONOTONIC]       = HRTIMER_BASE_MONOTONIC,
         |                                   ^~~~~~~~~~~~~~~~~~~~~~
   kernel/time/hrtimer.c:122:35: note: (near initialization for 'hrtimer_clock_to_base_table[1]')
   kernel/time/hrtimer.c:123:35: warning: initialized field overwritten [-Woverride-init]
     123 |         [CLOCK_BOOTTIME]        = HRTIMER_BASE_BOOTTIME,
         |                                   ^~~~~~~~~~~~~~~~~~~~~
   kernel/time/hrtimer.c:123:35: note: (near initialization for 'hrtimer_clock_to_base_table[7]')
   kernel/time/hrtimer.c:124:35: warning: initialized field overwritten [-Woverride-init]
     124 |         [CLOCK_TAI]             = HRTIMER_BASE_TAI,
         |                                   ^~~~~~~~~~~~~~~~
   kernel/time/hrtimer.c:124:35: note: (near initialization for 'hrtimer_clock_to_base_table[11]')


vim +/regs +1013 include/linux/ftrace.h

  1006	
  1007	/*
  1008	 * Structure that defines an entry function trace.
  1009	 * It's already packed but the attribute "packed" is needed
  1010	 * to remove extra padding at the end.
  1011	 */
  1012	struct ftrace_graph_ent {
> 1013		struct ftrace_regs regs;
  1014		unsigned long func; /* Current function */
  1015		int depth;
  1016	} __packed;
  1017	

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