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authorSteven Rostedt <srostedt@redhat.com>2009-11-17 10:48:25 -0500
committerSteven Rostedt <rostedt@goodmis.org>2009-11-17 11:05:52 -0500
commit638adb0561264a3360a53e93def62288c85d8373 (patch)
tree4d89d07b6c3c5a8b04458b1118a536d97968adcf /scripts/recordmcount.pl
parentf6060f46819f313d34a8c8151390cda509c23389 (diff)
downloadlinux-linaro-stable-638adb0561264a3360a53e93def62288c85d8373.tar.gz
tracing: Only print objcopy version warning once from recordmcount
If the user has an older version of objcopy, that can not handle converting local symbols to global and vice versa, then some functions will not be part of the dynamic function tracer. The current code in recordmcount.pl will print a warning in this case. Unfortunately, there exists lots of files that may have this issue with older objcopys and this will cause a warning for every file compiled with this issue. This patch solves this overwhelming output by creating a .tmp_quiet_recordmcount file on the first instance the warning is encountered. The warning will not print if this file exists. The temp file is deleted at the beginning of the compile to ensure that the warning will happen once again on new compiles (because the issue is still present). Reported-by: Andrew Morton <akpm@linux-foundation.org> Cc: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'scripts/recordmcount.pl')
-rwxr-xr-xscripts/recordmcount.pl12
1 files changed, 10 insertions, 2 deletions
diff --git a/scripts/recordmcount.pl b/scripts/recordmcount.pl
index a4e2435d4821..f0d14452632b 100755
--- a/scripts/recordmcount.pl
+++ b/scripts/recordmcount.pl
@@ -162,6 +162,11 @@ my $alignment; # The .align value to use for $mcount_section
my $section_type; # Section header plus possible alignment command
my $can_use_local = 0; # If we can use local function references
+# Shut up recordmcount if user has older objcopy
+my $quiet_recordmcount = ".tmp_quiet_recordmcount";
+my $print_warning = 1;
+$print_warning = 0 if ( -f $quiet_recordmcount);
+
##
# check_objcopy - whether objcopy supports --globalize-symbols
#
@@ -179,10 +184,13 @@ sub check_objcopy
}
close (IN);
- if (!$can_use_local) {
+ if (!$can_use_local && $print_warning) {
print STDERR "WARNING: could not find objcopy version or version " .
"is less than 2.17.\n" .
- "\tLocal function references is disabled.\n";
+ "\tLocal function references are disabled.\n";
+ open (QUIET, ">$quiet_recordmcount");
+ printf QUIET "Disables the warning from recordmcount.pl\n";
+ close QUIET;
}
}