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=-9.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT 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 8DA5CC433DF for ; Mon, 15 Jun 2020 14:38:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 555B220679 for ; Mon, 15 Jun 2020 14:38:53 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=android.com header.i=@android.com header.b="UYDuKMmO" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730607AbgFOOiw (ORCPT ); Mon, 15 Jun 2020 10:38:52 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39430 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729243AbgFOOiv (ORCPT ); Mon, 15 Jun 2020 10:38:51 -0400 Received: from mail-pf1-x443.google.com (mail-pf1-x443.google.com [IPv6:2607:f8b0:4864:20::443]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9140DC061A0E for ; Mon, 15 Jun 2020 07:38:51 -0700 (PDT) Received: by mail-pf1-x443.google.com with SMTP id h185so7907807pfg.2 for ; Mon, 15 Jun 2020 07:38:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=android.com; s=20161025; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=M1NtAaJQbnuNgbUb1D/FsI0at4jS7yofQQpYC64HM5M=; b=UYDuKMmOwZdlZz6/KeX+EVpriSho+LhNzH7LrG+Thh/SIIZmeyofDwtXtRWFG31XqV b/bf1jkuLyzT9zFLkumChihEfVoedph8rF6sN3z08OTcMv8OXaZNiQv0ND0yalI3ewz8 hDISCJlPgvyphk7rwMFtXmg1y8CIasdYPW6Y+uQ9LzPXj53kCVj8wvKcrIwkinIX+CP1 NIQpPszxYenej3pFLpnHQoUhsobAlifGRpMF4gwTV9zkgR5YsyboWYcIFtVCpLtX0kKH VVwDYyCrtXxIKQLEbYWBnnKoqKxATGIeEduSFD2hFV77eNhdqRPzMvQuMl//iCVmuqVI +xMw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=M1NtAaJQbnuNgbUb1D/FsI0at4jS7yofQQpYC64HM5M=; b=TvMO+242Ae7gPXG5gnychGV03NRzgbvjalIKoTR03HjOeM2c9XP62CZI/l9Bl9A1VZ fgopC5JFn7kcyT7RehCKH6yLVIlCRN6I+DMVYJtvxOlLm29zb06PKkqYMtQZWaXD8FMl 7nFxFlJVU0cRD7xEIj5eQUIKni4QJsvDrP66bpxSRPoHNmyn4dn22OYEuUr5I//Gua1b exc6+N+xfNk3KymrRX5cu+sBtLJcHoejZzUNh4FUAk0pKEw3WawF7lF+P7SU+KUN9XcH gsDFPDwMUJ/RccohbLjDYGXW574GKmvZzAZhfRp3bHtqr5fr4M8PO/49VM+uDAQzAkY4 V2AA== X-Gm-Message-State: AOAM530et5jo2NCXvKoST5+pGqG6utClNUDIgemT2Lg0kjbiPmnh48Er gY5d3qtbDAEnywM9lZDNSMi67gBZP1Q= X-Google-Smtp-Source: ABdhPJxiGsnXmYIs7G3t9SMJRek0VnDmtWmhF+DPVXkG3tqC3vCgC7Z/gu3POHo0euBdrQ1pF0bQ1g== X-Received: by 2002:a62:3382:: with SMTP id z124mr23666064pfz.263.1592231930594; Mon, 15 Jun 2020 07:38:50 -0700 (PDT) Received: from nebulus.mtv.corp.google.com ([2620:15c:211:200:5404:91ba:59dc:9400]) by smtp.gmail.com with ESMTPSA id y10sm12327239pgi.54.2020.06.15.07.38.49 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 15 Jun 2020 07:38:49 -0700 (PDT) From: Mark Salyzyn To: linux-kernel@vger.kernel.org Cc: kernel-team@android.com, Chiawei Wang , Mark Salyzyn , Catalin Marinas , Will Deacon , Thomas Gleixner , Vincenzo Frascino , Enrico Weigelt , Greg Kroah-Hartman , Alexios Zavras , linux-arm-kernel@lists.infradead.org, Allison Randal Subject: [PATCH v2]: arch: arm64: vdso: export the symbols for time() Date: Mon, 15 Jun 2020 07:38:24 -0700 Message-Id: <20200615143838.143137-1-salyzyn@android.com> X-Mailer: git-send-email 2.27.0.290.gba653c62da-goog MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Chiawei Wang __cvdso_time() can be found in vDSO implementation, but the symbols for time() are not exported. Export the symbols and run bionic-benchmarks. BEFORE: bionic-benchmarks32 --bionic_extra BM_time_time ----------------------------------------------------- Benchmark Time CPU Iterations ----------------------------------------------------- BM_time_time 83.6 ns 83.5 ns 8385964 bionic-benchmarks64 --bionic_extra BM_time_time ----------------------------------------------------- Benchmark Time CPU Iterations ----------------------------------------------------- BM_time_time 63.5 ns 63.4 ns 11037509 AFTER: bionic-benchmarks32 --bionic_extra BM_time_time ----------------------------------------------------- Benchmark Time CPU Iterations ----------------------------------------------------- BM_time_time 8.57 ns 8.56 ns 81887312 bionic-benchmarks64 --bionic_extra BM_time_time ----------------------------------------------------- Benchmark Time CPU Iterations ----------------------------------------------------- BM_time_time 7.52 ns 7.51 ns 93253809 Signed-off-by: Chiawei Wang Signed-off-by: Mark Salyzyn Cc: linux-kernel@vger.kernel.org Cc: kernel-team@android.com Cc: Catalin Marinas Cc: Will Deacon Cc: Thomas Gleixner Cc: Vincenzo Frascino Cc: Enrico Weigelt Cc: Greg Kroah-Hartman Cc: Alexios Zavras Cc: linux-arm-kernel@lists.infradead.org --- v2: - add prototypes in both vgettimeofday.c - use __kernel_old_time_t instead of time_t --- arch/arm64/include/asm/vdso/compat_gettimeofday.h | 12 ++++++++++++ arch/arm64/include/asm/vdso/gettimeofday.h | 10 ++++++++++ arch/arm64/kernel/vdso/vdso.lds.S | 1 + arch/arm64/kernel/vdso/vgettimeofday.c | 5 +++++ arch/arm64/kernel/vdso32/vdso.lds.S | 1 + arch/arm64/kernel/vdso32/vgettimeofday.c | 5 +++++ 6 files changed, 34 insertions(+) diff --git a/arch/arm64/include/asm/vdso/compat_gettimeofday.h b/arch/arm64/include/asm/vdso/compat_gettimeofday.h index b6907ae78e53..d0a5655785bd 100644 --- a/arch/arm64/include/asm/vdso/compat_gettimeofday.h +++ b/arch/arm64/include/asm/vdso/compat_gettimeofday.h @@ -14,8 +14,20 @@ #define VDSO_HAS_CLOCK_GETRES 1 +#define VDSO_HAS_TIME 1 + #define BUILD_VDSO32 1 +extern int __vdso_clock_gettime(clockid_t clock, + struct old_timespec32 *ts); +extern int __vdso_clock_gettime64(clockid_t clock, + struct __kernel_timespec *ts); +extern int __vdso_gettimeofday(struct __kernel_old_timeval *tv, + struct timezone *tz); +extern int __vdso_clock_getres(clockid_t clock_id, + struct old_timespec32 *res); +extern __kernel_old_time_t time(__kernel_old_time_t *time); + static __always_inline int gettimeofday_fallback(struct __kernel_old_timeval *_tv, struct timezone *_tz) diff --git a/arch/arm64/include/asm/vdso/gettimeofday.h b/arch/arm64/include/asm/vdso/gettimeofday.h index afba6ba332f8..e0dcf0dce6c0 100644 --- a/arch/arm64/include/asm/vdso/gettimeofday.h +++ b/arch/arm64/include/asm/vdso/gettimeofday.h @@ -11,6 +11,16 @@ #define VDSO_HAS_CLOCK_GETRES 1 +#define VDSO_HAS_TIME 1 + +extern int __kernel_clock_gettime(clockid_t clock, + struct __kernel_timespec *ts); +extern int __kernel_gettimeofday(struct __kernel_old_timeval *tv, + struct timezone *tz); +extern int __kernel_clock_getres(clockid_t clock_id, + struct __kernel_timespec *res); +extern __kernel_old_time_t __vdso_time(__kernel_old_time_t *time); + static __always_inline int gettimeofday_fallback(struct __kernel_old_timeval *_tv, struct timezone *_tz) diff --git a/arch/arm64/kernel/vdso/vdso.lds.S b/arch/arm64/kernel/vdso/vdso.lds.S index 7ad2d3a0cd48..61dddb0af1a5 100644 --- a/arch/arm64/kernel/vdso/vdso.lds.S +++ b/arch/arm64/kernel/vdso/vdso.lds.S @@ -77,6 +77,7 @@ VERSION __kernel_gettimeofday; __kernel_clock_gettime; __kernel_clock_getres; + __kernel_time; local: *; }; } diff --git a/arch/arm64/kernel/vdso/vgettimeofday.c b/arch/arm64/kernel/vdso/vgettimeofday.c index 4236cf34d7d9..9a9058ba1f89 100644 --- a/arch/arm64/kernel/vdso/vgettimeofday.c +++ b/arch/arm64/kernel/vdso/vgettimeofday.c @@ -23,3 +23,8 @@ int __kernel_clock_getres(clockid_t clock_id, { return __cvdso_clock_getres(clock_id, res); } + +__kernel_old_time_t __vdso_time(__kernel_old_time_t *time) +{ + return __cvdso_time(time); +} diff --git a/arch/arm64/kernel/vdso32/vdso.lds.S b/arch/arm64/kernel/vdso32/vdso.lds.S index a3944927eaeb..2222c78451b4 100644 --- a/arch/arm64/kernel/vdso32/vdso.lds.S +++ b/arch/arm64/kernel/vdso32/vdso.lds.S @@ -69,6 +69,7 @@ VERSION __kernel_rt_sigreturn_arm; __kernel_rt_sigreturn_thumb; __vdso_clock_gettime64; + __vdso_time; local: *; }; } diff --git a/arch/arm64/kernel/vdso32/vgettimeofday.c b/arch/arm64/kernel/vdso32/vgettimeofday.c index 5acff29c5991..7eb988fa06d8 100644 --- a/arch/arm64/kernel/vdso32/vgettimeofday.c +++ b/arch/arm64/kernel/vdso32/vgettimeofday.c @@ -30,6 +30,11 @@ int __vdso_clock_getres(clockid_t clock_id, return __cvdso_clock_getres_time32(clock_id, res); } +__kernel_old_time_t time(__kernel_old_time_t *time) +{ + return __cvdso_time(time); +} + /* Avoid unresolved references emitted by GCC */ void __aeabi_unwind_cpp_pr0(void) -- 2.27.0.290.gba653c62da-goog 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=-9.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 60607C433DF for ; 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Mon, 15 Jun 2020 07:38:50 -0700 (PDT) Received: from nebulus.mtv.corp.google.com ([2620:15c:211:200:5404:91ba:59dc:9400]) by smtp.gmail.com with ESMTPSA id y10sm12327239pgi.54.2020.06.15.07.38.49 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 15 Jun 2020 07:38:49 -0700 (PDT) From: Mark Salyzyn To: linux-kernel@vger.kernel.org Subject: [PATCH v2]: arch: arm64: vdso: export the symbols for time() Date: Mon, 15 Jun 2020 07:38:24 -0700 Message-Id: <20200615143838.143137-1-salyzyn@android.com> X-Mailer: git-send-email 2.27.0.290.gba653c62da-goog MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200615_073851_858187_90E6699A X-CRM114-Status: GOOD ( 11.93 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Enrico Weigelt , Will Deacon , Catalin Marinas , Allison Randal , Mark Salyzyn , Alexios Zavras , Chiawei Wang , Greg Kroah-Hartman , Thomas Gleixner , Vincenzo Frascino , kernel-team@android.com, linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Chiawei Wang __cvdso_time() can be found in vDSO implementation, but the symbols for time() are not exported. Export the symbols and run bionic-benchmarks. BEFORE: bionic-benchmarks32 --bionic_extra BM_time_time ----------------------------------------------------- Benchmark Time CPU Iterations ----------------------------------------------------- BM_time_time 83.6 ns 83.5 ns 8385964 bionic-benchmarks64 --bionic_extra BM_time_time ----------------------------------------------------- Benchmark Time CPU Iterations ----------------------------------------------------- BM_time_time 63.5 ns 63.4 ns 11037509 AFTER: bionic-benchmarks32 --bionic_extra BM_time_time ----------------------------------------------------- Benchmark Time CPU Iterations ----------------------------------------------------- BM_time_time 8.57 ns 8.56 ns 81887312 bionic-benchmarks64 --bionic_extra BM_time_time ----------------------------------------------------- Benchmark Time CPU Iterations ----------------------------------------------------- BM_time_time 7.52 ns 7.51 ns 93253809 Signed-off-by: Chiawei Wang Signed-off-by: Mark Salyzyn Cc: linux-kernel@vger.kernel.org Cc: kernel-team@android.com Cc: Catalin Marinas Cc: Will Deacon Cc: Thomas Gleixner Cc: Vincenzo Frascino Cc: Enrico Weigelt Cc: Greg Kroah-Hartman Cc: Alexios Zavras Cc: linux-arm-kernel@lists.infradead.org --- v2: - add prototypes in both vgettimeofday.c - use __kernel_old_time_t instead of time_t --- arch/arm64/include/asm/vdso/compat_gettimeofday.h | 12 ++++++++++++ arch/arm64/include/asm/vdso/gettimeofday.h | 10 ++++++++++ arch/arm64/kernel/vdso/vdso.lds.S | 1 + arch/arm64/kernel/vdso/vgettimeofday.c | 5 +++++ arch/arm64/kernel/vdso32/vdso.lds.S | 1 + arch/arm64/kernel/vdso32/vgettimeofday.c | 5 +++++ 6 files changed, 34 insertions(+) diff --git a/arch/arm64/include/asm/vdso/compat_gettimeofday.h b/arch/arm64/include/asm/vdso/compat_gettimeofday.h index b6907ae78e53..d0a5655785bd 100644 --- a/arch/arm64/include/asm/vdso/compat_gettimeofday.h +++ b/arch/arm64/include/asm/vdso/compat_gettimeofday.h @@ -14,8 +14,20 @@ #define VDSO_HAS_CLOCK_GETRES 1 +#define VDSO_HAS_TIME 1 + #define BUILD_VDSO32 1 +extern int __vdso_clock_gettime(clockid_t clock, + struct old_timespec32 *ts); +extern int __vdso_clock_gettime64(clockid_t clock, + struct __kernel_timespec *ts); +extern int __vdso_gettimeofday(struct __kernel_old_timeval *tv, + struct timezone *tz); +extern int __vdso_clock_getres(clockid_t clock_id, + struct old_timespec32 *res); +extern __kernel_old_time_t time(__kernel_old_time_t *time); + static __always_inline int gettimeofday_fallback(struct __kernel_old_timeval *_tv, struct timezone *_tz) diff --git a/arch/arm64/include/asm/vdso/gettimeofday.h b/arch/arm64/include/asm/vdso/gettimeofday.h index afba6ba332f8..e0dcf0dce6c0 100644 --- a/arch/arm64/include/asm/vdso/gettimeofday.h +++ b/arch/arm64/include/asm/vdso/gettimeofday.h @@ -11,6 +11,16 @@ #define VDSO_HAS_CLOCK_GETRES 1 +#define VDSO_HAS_TIME 1 + +extern int __kernel_clock_gettime(clockid_t clock, + struct __kernel_timespec *ts); +extern int __kernel_gettimeofday(struct __kernel_old_timeval *tv, + struct timezone *tz); +extern int __kernel_clock_getres(clockid_t clock_id, + struct __kernel_timespec *res); +extern __kernel_old_time_t __vdso_time(__kernel_old_time_t *time); + static __always_inline int gettimeofday_fallback(struct __kernel_old_timeval *_tv, struct timezone *_tz) diff --git a/arch/arm64/kernel/vdso/vdso.lds.S b/arch/arm64/kernel/vdso/vdso.lds.S index 7ad2d3a0cd48..61dddb0af1a5 100644 --- a/arch/arm64/kernel/vdso/vdso.lds.S +++ b/arch/arm64/kernel/vdso/vdso.lds.S @@ -77,6 +77,7 @@ VERSION __kernel_gettimeofday; __kernel_clock_gettime; __kernel_clock_getres; + __kernel_time; local: *; }; } diff --git a/arch/arm64/kernel/vdso/vgettimeofday.c b/arch/arm64/kernel/vdso/vgettimeofday.c index 4236cf34d7d9..9a9058ba1f89 100644 --- a/arch/arm64/kernel/vdso/vgettimeofday.c +++ b/arch/arm64/kernel/vdso/vgettimeofday.c @@ -23,3 +23,8 @@ int __kernel_clock_getres(clockid_t clock_id, { return __cvdso_clock_getres(clock_id, res); } + +__kernel_old_time_t __vdso_time(__kernel_old_time_t *time) +{ + return __cvdso_time(time); +} diff --git a/arch/arm64/kernel/vdso32/vdso.lds.S b/arch/arm64/kernel/vdso32/vdso.lds.S index a3944927eaeb..2222c78451b4 100644 --- a/arch/arm64/kernel/vdso32/vdso.lds.S +++ b/arch/arm64/kernel/vdso32/vdso.lds.S @@ -69,6 +69,7 @@ VERSION __kernel_rt_sigreturn_arm; __kernel_rt_sigreturn_thumb; __vdso_clock_gettime64; + __vdso_time; local: *; }; } diff --git a/arch/arm64/kernel/vdso32/vgettimeofday.c b/arch/arm64/kernel/vdso32/vgettimeofday.c index 5acff29c5991..7eb988fa06d8 100644 --- a/arch/arm64/kernel/vdso32/vgettimeofday.c +++ b/arch/arm64/kernel/vdso32/vgettimeofday.c @@ -30,6 +30,11 @@ int __vdso_clock_getres(clockid_t clock_id, return __cvdso_clock_getres_time32(clock_id, res); } +__kernel_old_time_t time(__kernel_old_time_t *time) +{ + return __cvdso_time(time); +} + /* Avoid unresolved references emitted by GCC */ void __aeabi_unwind_cpp_pr0(void) -- 2.27.0.290.gba653c62da-goog _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel