kconfig: print the range of integer/hex symbol in help text

Without this patch, one has to refer to the Kconfig file to find
out the range of an integer/hex symbol.

  │ Symbol: NR_CPUS [=4]
  │ Type  : integer
  │ Range : [2 8]
  │ Prompt: Maximum number of CPUs
  │   Defined at arch/x86/Kconfig:761
  │   Depends on: SMP [=y] && !MAXSMP [=n]
  │   Location:
  │     -> Processor type and features

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Signed-off-by: Michal Marek <mmarek@suse.cz>

1 files changed, 8 insertions, 0 deletions

diff --git a/scripts/kconfig/menu.c b/scripts/kconfig/menu.c
index 187caa9142fd..9d1f2adf2289 100644
--- a/scripts/kconfig/menu.c
+++ b/scripts/kconfig/menu.c
@@ -505,6 +505,14 @@ void get_symbol_str(struct gstr *r, struct symbol *sym)
                 str_printf(r, "Symbol: %s [=%s]\n", sym->name,
                            sym_get_string_value(sym));
                 str_printf(r, "Type  : %s\n", sym_type_name(sym->type));
+                if (sym->type == S_INT || sym->type == S_HEX) {
+                        prop = sym_get_range_prop(sym);
+                        if (prop) {
+                                str_printf(r, "Range : ");
+                                expr_gstr_print(prop->expr, r);
+                                str_append(r, "\n");
+                        }
+                }
         }
         for_all_prompts(sym, prop)
                 get_prompt_str(r, prop);