Merge tag 'for-linus-4.13-v2' of git://github.com/cminyard/linux-ipmi

[sfrench/cifs-2.6.git] / scripts / checkpatch.pl

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 4b9569fa931b90200a2c809598fe3765b157fbb7..3a225d078e75fe931a8c218154cf5d978d9fd9db 100755 (executable)
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -1,4 +1,4 @@
-#!/usr/bin/perl -w
+#!/usr/bin/env perl
 # (c) 2001, Dave Jones. (the file handling bit)
 # (c) 2005, Joel Schopp <jschopp@austin.ibm.com> (the ugly bit)
 # (c) 2007,2008, Andy Whitcroft <apw@uk.ibm.com> (new conditions, test suite)
@@ -6,6 +6,7 @@
 # Licensed under the terms of the GNU GPL License version 2
 
 use strict;
+use warnings;
 use POSIX;
 use File::Basename;
 use Cwd 'abs_path';
@@ -5533,23 +5534,6 @@ sub process {
                        }
                }
 
-# Check for expedited grace periods that interrupt non-idle non-nohz
-# online CPUs.  These expedited can therefore degrade real-time response
-# if used carelessly, and should be avoided where not absolutely
-# needed.  It is always OK to use synchronize_rcu_expedited() and
-# synchronize_sched_expedited() at boot time (before real-time applications
-# start) and in error situations where real-time response is compromised in
-# any case.  Note that synchronize_srcu_expedited() does -not- interrupt
-# other CPUs, so don't warn on uses of synchronize_srcu_expedited().
-# Of course, nothing comes for free, and srcu_read_lock() and
-# srcu_read_unlock() do contain full memory barriers in payment for
-# synchronize_srcu_expedited() non-interruption properties.
-               if ($line =~ /\b(synchronize_rcu_expedited|synchronize_sched_expedited)\(/) {
-                       WARN("EXPEDITED_RCU_GRACE_PERIOD",
-                            "expedited RCU grace periods should be avoided where they can degrade real-time response\n" . $herecurr);
-
-               }
-
 # check of hardware specific defines
                if ($line =~ m@^.\s*\#\s*if.*\b(__i386__|__powerpc64__|__sun__|__s390x__)\b@ && $realfile !~ m@include/asm-@) {
                        CHK("ARCH_DEFINES",
@@ -5709,7 +5693,7 @@ sub process {
                        for (my $count = $linenr; $count <= $lc; $count++) {
                                my $fmt = get_quoted_string($lines[$count - 1], raw_line($count, 0));
                                $fmt =~ s/%%//g;
-                               if ($fmt =~ /(\%[\*\d\.]*p(?![\WFfSsBKRraEhMmIiUDdgVCbGN]).)/) {
+                               if ($fmt =~ /(\%[\*\d\.]*p(?![\WFfSsBKRraEhMmIiUDdgVCbGNO]).)/) {
                                        $bad_extension = $1;
                                        last;
                                }