[jolsa-perf:tmp 5/5] kernel/trace/trace_output.c:1110:26: error: 'FTRACE_REGS_MAX_ARGS' undeclared

[jolsa-perf:tmp 5/5] kernel/trace/trace_output.c:1110:26: error: 'FTRACE_REGS_MAX_ARGS' undeclared

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf.git tmp
head:   e2a63411ac4e1b7b36da9f4c2245570d92842d2e
commit: e2a63411ac4e1b7b36da9f4c2245570d92842d2e [5/5] ftrace: Add arguments to function tracer
config: arc-randconfig-001-20250101 (https://download.01.org/0day-ci/archive/20250101/202501010955.Js0ZSSjD-lkp@intel.com/config)
compiler: arc-elf-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250101/202501010955.Js0ZSSjD-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/202501010955.Js0ZSSjD-lkp@intel.com/

All errors (new ones prefixed by >>):

   kernel/trace/trace_output.c: In function 'trace_fn_trace':
>> kernel/trace/trace_output.c:1110:26: error: 'FTRACE_REGS_MAX_ARGS' undeclared (first use in this function)
    1110 |         if (args_size >= FTRACE_REGS_MAX_ARGS * sizeof(long))
         |                          ^~~~~~~~~~~~~~~~~~~~
   kernel/trace/trace_output.c:1110:26: note: each undeclared identifier is reported only once for each function it appears in
--
   kernel/trace/trace.c: In function 'trace_function':
>> kernel/trace/trace.c:2907:17: error: 'FTRACE_REGS_MAX_ARGS' undeclared (first use in this function)
    2907 |         size += FTRACE_REGS_MAX_ARGS * !!fregs * sizeof(long);
         |                 ^~~~~~~~~~~~~~~~~~~~
   kernel/trace/trace.c:2907:17: note: each undeclared identifier is reported only once for each function it appears in
>> kernel/trace/trace.c:2919:42: error: implicit declaration of function 'ftrace_regs_get_argument' [-Werror=implicit-function-declaration]
    2919 |                         entry->args[i] = ftrace_regs_get_argument(fregs, i);
         |                                          ^~~~~~~~~~~~~~~~~~~~~~~~
   cc1: some warnings being treated as errors


vim +/FTRACE_REGS_MAX_ARGS +1110 kernel/trace/trace_output.c

  1097	
  1098	/* TRACE_FN */
  1099	static enum print_line_t trace_fn_trace(struct trace_iterator *iter, int flags,
  1100						struct trace_event *event)
  1101	{
  1102		struct ftrace_entry *field;
  1103		struct trace_seq *s = &iter->seq;
  1104		unsigned long *args;
  1105		int args_size;
  1106	
  1107		trace_assign_type(field, iter->ent);
  1108	
  1109		args_size = iter->ent_size - offsetof(struct ftrace_entry, args);
> 1110		if (args_size >= FTRACE_REGS_MAX_ARGS * sizeof(long))
  1111			args = field->args;
  1112		else
  1113			args = NULL;
  1114	
  1115		print_fn_trace(s, field->ip, field->parent_ip, iter->tr->text_delta,
  1116			       args, flags);
  1117		trace_seq_putc(s, '\n');
  1118	
  1119		return trace_handle_return(s);
  1120	}
  1121	

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