From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932354AbaCEWby (ORCPT ); Wed, 5 Mar 2014 17:31:54 -0500 Received: from terminus.zytor.com ([198.137.202.10]:37581 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932281AbaCEWbw (ORCPT ); Wed, 5 Mar 2014 17:31:52 -0500 Date: Wed, 5 Mar 2014 14:31:30 -0800 From: tip-bot for Stefani Seibold Message-ID: Cc: linux-kernel@vger.kernel.org, luto@amacapital.net, hpa@zytor.com, mingo@kernel.org, stefani@seibold.net, tglx@linutronix.de, hpa@linux.intel.com Reply-To: mingo@kernel.org, hpa@zytor.com, luto@amacapital.net, linux-kernel@vger.kernel.org, stefani@seibold.net, tglx@linutronix.de, hpa@linux.intel.com In-Reply-To: <1393881143-3569-7-git-send-email-stefani@seibold.net> References: <1393881143-3569-7-git-send-email-stefani@seibold.net> To: linux-tip-commits@vger.kernel.org Subject: [tip:x86/vdso] x86, vdso: Cleanup __vdso_gettimeofday() Git-Commit-ID: 6543ca6fee7d3b314bda69b83fd429ed3e336645 X-Mailer: tip-git-log-daemon Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset=UTF-8 Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Commit-ID: 6543ca6fee7d3b314bda69b83fd429ed3e336645 Gitweb: http://git.kernel.org/tip/6543ca6fee7d3b314bda69b83fd429ed3e336645 Author: Stefani Seibold AuthorDate: Mon, 3 Mar 2014 22:12:17 +0100 Committer: H. Peter Anvin CommitDate: Wed, 5 Mar 2014 14:02:38 -0800 x86, vdso: Cleanup __vdso_gettimeofday() This patch do a little cleanup for the __vdso_gettimeofday() function. It kicks out an unneeded ret local variable and makes the code faster if only the timezone is needed (an admittedly rare case.) Reviewed-by: Andy Lutomirski Signed-off-by: Stefani Seibold Link: http://lkml.kernel.org/r/1393881143-3569-7-git-send-email-stefani@seibold.net Signed-off-by: H. Peter Anvin --- arch/x86/vdso/vclock_gettime.c | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-) diff --git a/arch/x86/vdso/vclock_gettime.c b/arch/x86/vdso/vclock_gettime.c index 743f277..09dae4a 100644 --- a/arch/x86/vdso/vclock_gettime.c +++ b/arch/x86/vdso/vclock_gettime.c @@ -259,13 +259,12 @@ int clock_gettime(clockid_t, struct timespec *) notrace int __vdso_gettimeofday(struct timeval *tv, struct timezone *tz) { - long ret = VCLOCK_NONE; - if (likely(tv != NULL)) { BUILD_BUG_ON(offsetof(struct timeval, tv_usec) != offsetof(struct timespec, tv_nsec) || sizeof(*tv) != sizeof(struct timespec)); - ret = do_realtime((struct timespec *)tv); + if (unlikely(do_realtime((struct timespec *)tv) == VCLOCK_NONE)) + return vdso_fallback_gtod(tv, tz); tv->tv_usec /= 1000; } if (unlikely(tz != NULL)) { @@ -274,8 +273,6 @@ notrace int __vdso_gettimeofday(struct timeval *tv, struct timezone *tz) tz->tz_dsttime = gtod->sys_tz.tz_dsttime; } - if (ret == VCLOCK_NONE) - return vdso_fallback_gtod(tv, tz); return 0; } int gettimeofday(struct timeval *, struct timezone *)