From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754205Ab3FJWVg (ORCPT ); Mon, 10 Jun 2013 18:21:36 -0400 Received: from perches-mx.perches.com ([206.117.179.246]:55572 "EHLO labridge.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752084Ab3FJWVf (ORCPT ); Mon, 10 Jun 2013 18:21:35 -0400 From: Joe Perches To: Andrew Morton Cc: Andy Whitcroft , linux-kernel@vger.kernel.org Subject: [PATCH 05/12] checkpatch: Warn on comparisons to get_jiffies_64() Date: Mon, 10 Jun 2013 15:20:43 -0700 Message-Id: X-Mailer: git-send-email 1.8.1.2.459.gbcd45b4.dirty In-Reply-To: References: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Comparing get_jiffies_64() is almost always wrong and time_before64 and time_after64 should be used instead. Warn on any comparison to get_jiffies_64(). Signed-off-by: Joe Perches --- scripts/checkpatch.pl | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl index c274e1d..f4e247b2 100755 --- a/scripts/checkpatch.pl +++ b/scripts/checkpatch.pl @@ -3305,6 +3305,12 @@ sub process { "Comparing jiffies is almost always wrong; prefer time_after, time_before and friends\n" . $herecurr); } +# check for comparisons of get_jiffies_64() + if ($line =~ /\bget_jiffies_64\s*\(\s*\)\s*$Compare|$Compare\s*get_jiffies_64\s*\(\s*\)/) { + WARN("JIFFIES_COMPARISON", + "Comparing get_jiffies_64() is almost always wrong; prefer time_after64, time_before64 and friends\n" . $herecurr); + } + # warn about #ifdefs in C files # if ($line =~ /^.\s*\#\s*if(|n)def/ && ($realfile =~ /\.c$/)) { # print "#ifdef in C files should be avoided\n"; -- 1.8.1.2.459.gbcd45b4.dirty