From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-11.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8CB8EC48BE4 for ; Mon, 24 Jun 2019 01:41:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 61F4D22CEB for ; Mon, 24 Jun 2019 01:41:53 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=zytor.com header.i=@zytor.com header.b="yD/hblzZ" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726883AbfFXBlv (ORCPT ); Sun, 23 Jun 2019 21:41:51 -0400 Received: from terminus.zytor.com ([198.137.202.136]:51211 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726553AbfFXBk5 (ORCPT ); Sun, 23 Jun 2019 21:40:57 -0400 Received: from terminus.zytor.com (localhost [127.0.0.1]) by terminus.zytor.com (8.15.2/8.15.2) with ESMTPS id x5NNupjx2860305 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NO); Sun, 23 Jun 2019 16:56:51 -0700 DKIM-Filter: OpenDKIM Filter v2.11.0 terminus.zytor.com x5NNupjx2860305 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=zytor.com; s=2019061801; t=1561334212; bh=cU6U0DTDpzt3ITirMeTEFL0anIB+F/Sdmvp7TuSAZkc=; h=Date:From:Cc:Reply-To:In-Reply-To:References:To:Subject:From; b=yD/hblzZ86RHmH/i1/E9J/6kV/WgGChYHByBrVPwSRf5RaBWBsXLEzOtqT1glY58D P8G0qWTYlvNSR4B1Dsi9T0CPhm/zeFQQq1DNlkwRa9dSoQ6jWKTTWRq6wPgJlqeeC2 bg11jqXxrfA5UORCI5bcXQ2lMO6T9hkxnyVe5fnjfXStK9lE+3XDisxXhurKo6RllX p0COtxe8lHBHQptYcPybfk4NaPis9UrUfyqzfi+A5NCyb3YVXih1OXW3+xeMpIt/0Y IOVn7WVrIJWm7kJpomRgi3xcZj8NsaweiPKSV+Y6vqcc8h+aXvDIeFOsswpvomrWon pmogFJiqyfIOg== Received: (from tipbot@localhost) by terminus.zytor.com (8.15.2/8.15.2/Submit) id x5NNuokd2860302; Sun, 23 Jun 2019 16:56:50 -0700 Date: Sun, 23 Jun 2019 16:56:50 -0700 X-Authentication-Warning: terminus.zytor.com: tipbot set sender to tipbot@zytor.com using -f From: tip-bot for Vincenzo Frascino Message-ID: Cc: ralf@linux-mips.org, shuah@kernel.org, linux-kernel@vger.kernel.org, arnd@arndb.de, linux@rasmusvillemoes.dk, will.deacon@arm.com, 0x7f454c46@gmail.com, mingo@kernel.org, tglx@linutronix.de, hpa@zytor.com, andre.przywara@arm.com, daniel.lezcano@linaro.org, sthotton@marvell.com, vincenzo.frascino@arm.com, pcc@google.com, linux@armlinux.org.uk, salyzyn@android.com, paul.burton@mips.com, catalin.marinas@arm.com, huw@codeweavers.com Reply-To: daniel.lezcano@linaro.org, sthotton@marvell.com, andre.przywara@arm.com, hpa@zytor.com, tglx@linutronix.de, mingo@kernel.org, will.deacon@arm.com, 0x7f454c46@gmail.com, linux@rasmusvillemoes.dk, arnd@arndb.de, shuah@kernel.org, linux-kernel@vger.kernel.org, ralf@linux-mips.org, huw@codeweavers.com, paul.burton@mips.com, catalin.marinas@arm.com, salyzyn@android.com, linux@armlinux.org.uk, pcc@google.com, vincenzo.frascino@arm.com In-Reply-To: <20190621095252.32307-25-vincenzo.frascino@arm.com> References: <20190621095252.32307-25-vincenzo.frascino@arm.com> To: linux-tip-commits@vger.kernel.org Subject: [tip:timers/vdso] x86/vdso: Add clock_gettime64() entry point Git-Commit-ID: 22ca962288c0a1c9729e8e440b9bb9ad05df6db6 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 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Commit-ID: 22ca962288c0a1c9729e8e440b9bb9ad05df6db6 Gitweb: https://git.kernel.org/tip/22ca962288c0a1c9729e8e440b9bb9ad05df6db6 Author: Vincenzo Frascino AuthorDate: Fri, 21 Jun 2019 10:52:51 +0100 Committer: Thomas Gleixner CommitDate: Sat, 22 Jun 2019 21:21:10 +0200 x86/vdso: Add clock_gettime64() entry point Linux 5.1 gained the new clock_gettime64() syscall to address the Y2038 problem on 32bit systems. The x86 VDSO is missing support for this variant of clock_gettime(). Update the x86 specific vDSO library accordingly so it exposes the new time getter. [ tglx: Massaged changelog ] Signed-off-by: Vincenzo Frascino Signed-off-by: Thomas Gleixner Cc: linux-arch@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-mips@vger.kernel.org Cc: linux-kselftest@vger.kernel.org Cc: Catalin Marinas Cc: Will Deacon Cc: Arnd Bergmann Cc: Russell King Cc: Ralf Baechle Cc: Paul Burton Cc: Daniel Lezcano Cc: Mark Salyzyn Cc: Peter Collingbourne Cc: Shuah Khan Cc: Dmitry Safonov <0x7f454c46@gmail.com> Cc: Rasmus Villemoes Cc: Huw Davies Cc: Shijith Thotton Cc: Andre Przywara Link: https://lkml.kernel.org/r/20190621095252.32307-25-vincenzo.frascino@arm.com --- arch/x86/entry/vdso/vclock_gettime.c | 8 ++++++++ arch/x86/entry/vdso/vdso32/vdso32.lds.S | 1 + 2 files changed, 9 insertions(+) diff --git a/arch/x86/entry/vdso/vclock_gettime.c b/arch/x86/entry/vdso/vclock_gettime.c index 1a648b509d46..d9ff616bb0f6 100644 --- a/arch/x86/entry/vdso/vclock_gettime.c +++ b/arch/x86/entry/vdso/vclock_gettime.c @@ -67,6 +67,14 @@ int __vdso_clock_gettime(clockid_t clock, struct old_timespec32 *ts) int clock_gettime(clockid_t, struct old_timespec32 *) __attribute__((weak, alias("__vdso_clock_gettime"))); +int __vdso_clock_gettime64(clockid_t clock, struct __kernel_timespec *ts) +{ + return __cvdso_clock_gettime(clock, ts); +} + +int clock_gettime64(clockid_t, struct __kernel_timespec *) + __attribute__((weak, alias("__vdso_clock_gettime64"))); + int __vdso_clock_getres(clockid_t clock, struct old_timespec32 *res) { return __cvdso_clock_getres_time32(clock, res); diff --git a/arch/x86/entry/vdso/vdso32/vdso32.lds.S b/arch/x86/entry/vdso/vdso32/vdso32.lds.S index 991b26cc855b..c7720995ab1a 100644 --- a/arch/x86/entry/vdso/vdso32/vdso32.lds.S +++ b/arch/x86/entry/vdso/vdso32/vdso32.lds.S @@ -27,6 +27,7 @@ VERSION __vdso_gettimeofday; __vdso_time; __vdso_clock_getres; + __vdso_clock_gettime64; }; LINUX_2.5 {