export_report: use warn() to issue WARNING, so they go to stderr

Also count CONFIG_MODVERSIONS warnings, and print a NOTE at start of
SECTION 2 if any were issued.  Section 2 will be empty if the build is
lacking this CONFIG_ item, and user may have missed the warnings, as
they're off screen.

Signed-off-by: Jim Cromie <jim.cromie@gmail.com>
Signed-off-by: Michal Marek <mmarek@suse.cz>

diff --git a/scripts/export_report.pl b/scripts/export_report.pl
index 48398a1..8f79b70 100644 (file)
--- a/scripts/export_report.pl
+++ b/scripts/export_report.pl
@@ -102,6 +102,8 @@ close($module_symvers);
 #
 # collect the usage count of each symbol.
 #
+my $modversion_warnings = 0;
+
 foreach my $thismod (@allcfiles) {
        my $module;
 
@@ -132,7 +134,8 @@ foreach my $thismod (@allcfiles) {
                }
        }
        if ($state != 2) {
-               print "WARNING:$thismod is not built with CONFIG_MODVERSION enabled\n";
+               warn "WARNING:$thismod is not built with CONFIG_MODVERSIONS enabled\n";
+               $modversion_warnings++;
        }
        close($module);
 }
@@ -166,6 +169,9 @@ printf("SECTION 2:\n\tThis section reports export-symbol-usage of in-kernel
 modules. Each module lists the modules, and the symbols from that module that
 it uses.  Each listed symbol reports the number of modules using it\n");
 
+print "\nNOTE: Got $modversion_warnings CONFIG_MODVERSIONS warnings\n\n"
+    if $modversion_warnings;
+
 print "~"x80 , "\n";
 for my $thismod (sort keys %MODULE) {
        my $list = $MODULE{$thismod};