From patchwork Fri Jun 21 09:52:47 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vincenzo Frascino X-Patchwork-Id: 11009711 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id B703E6C5 for ; Fri, 21 Jun 2019 10:21:02 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id A35D728737 for ; Fri, 21 Jun 2019 10:21:02 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 96281289B3; Fri, 21 Jun 2019 10:21:02 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED autolearn=unavailable version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 385C428737 for ; Fri, 21 Jun 2019 10:21:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=jpLte5y0n29Ji2olWZZ1qsEMd6LsRHyAzG4aNO64/bE=; b=SI6qudVNWxUQ/O 3dMOidhh8wZO079Evv8rBsJoaUwdt7CCAxf8F5FdA6jmodwHd52xKaoJL+uZ5/ktezoYxv/TCS8fs W9LSQGVEtlwN6bFWJHTdxYllrae/k4rpIgXPgCymGLRS0uUywvRYhmgrYHo+oydr4z3omIngZPOAM HUzKGmH7gK9a81GbcKSYlm8PJma5G/5JvGmuFSK/6D9KrgBJrEpTMvwTwcav62SFH+OOh1sRdM8uN 36Pe8WYBWnDnzxoc+unL1mWpDmMEVnXs/kHdOKRa3j/yAre87y9Uy5QToIY+lGMhpOyYQm589hwyC YscWXLoHPeNoBb9JBTYw==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1heGfB-00015J-FX; Fri, 21 Jun 2019 10:20:57 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1heGF9-0004PT-SQ for linux-arm-kernel@lists.infradead.org; Fri, 21 Jun 2019 09:54:05 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 02DA614F6; Fri, 21 Jun 2019 02:54:03 -0700 (PDT) Received: from e119884-lin.cambridge.arm.com (e119884-lin.cambridge.arm.com [10.1.196.72]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 6D9923F246; Fri, 21 Jun 2019 02:54:00 -0700 (PDT) From: Vincenzo Frascino To: linux-arch@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-mips@vger.kernel.org, linux-kselftest@vger.kernel.org Subject: [PATCH v7 20/25] mips: Add clock_getres entry point Date: Fri, 21 Jun 2019 10:52:47 +0100 Message-Id: <20190621095252.32307-21-vincenzo.frascino@arm.com> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190621095252.32307-1-vincenzo.frascino@arm.com> References: <20190621095252.32307-1-vincenzo.frascino@arm.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190621_025404_134664_7E714699 X-CRM114-Status: GOOD ( 10.95 ) 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: Shuah Khan , Andre Przywara , Arnd Bergmann , Huw Davies , Catalin Marinas , Daniel Lezcano , Will Deacon , Russell King , Ralf Baechle , Mark Salyzyn , Paul Burton , Dmitry Safonov <0x7f454c46@gmail.com>, Rasmus Villemoes , Thomas Gleixner , Shijith Thotton , Peter Collingbourne Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP The generic vDSO library provides an implementation of clock_getres() that can be leveraged by each architecture. Add clock_getres() entry point on mips. Cc: Ralf Baechle Cc: Paul Burton Signed-off-by: Vincenzo Frascino --- arch/mips/include/asm/vdso/gettimeofday.h | 26 +++++++++++++++++++++++ arch/mips/vdso/vdso.lds.S | 1 + arch/mips/vdso/vgettimeofday.c | 12 +++++++++++ 3 files changed, 39 insertions(+) diff --git a/arch/mips/include/asm/vdso/gettimeofday.h b/arch/mips/include/asm/vdso/gettimeofday.h index aa20865b288b..c59fe08b0347 100644 --- a/arch/mips/include/asm/vdso/gettimeofday.h +++ b/arch/mips/include/asm/vdso/gettimeofday.h @@ -22,6 +22,8 @@ #include #include +#define VDSO_HAS_CLOCK_GETRES 1 + #ifdef CONFIG_MIPS_CLOCK_VSYSCALL static __always_inline long gettimeofday_fallback( @@ -79,6 +81,30 @@ static __always_inline long clock_gettime_fallback( return error ? -ret : ret; } +static __always_inline int clock_getres_fallback( + clockid_t _clkid, + struct __kernel_timespec *_ts) +{ + register struct __kernel_timespec *ts asm("a1") = _ts; + register clockid_t clkid asm("a0") = _clkid; + register long ret asm("v0"); +#if _MIPS_SIM == _MIPS_SIM_ABI64 + register long nr asm("v0") = __NR_clock_getres; +#else + register long nr asm("v0") = __NR_clock_getres_time64; +#endif + register long error asm("a3"); + + asm volatile( + " syscall\n" + : "=r" (ret), "=r" (error) + : "r" (clkid), "r" (ts), "r" (nr) + : "$1", "$3", "$8", "$9", "$10", "$11", "$12", "$13", + "$14", "$15", "$24", "$25", "hi", "lo", "memory"); + + return error ? -ret : ret; +} + #ifdef CONFIG_CSRC_R4K static __always_inline u64 read_r4k_count(void) diff --git a/arch/mips/vdso/vdso.lds.S b/arch/mips/vdso/vdso.lds.S index 94d90c440590..ad9f2f2c0c97 100644 --- a/arch/mips/vdso/vdso.lds.S +++ b/arch/mips/vdso/vdso.lds.S @@ -95,6 +95,7 @@ VERSION global: __vdso_clock_gettime; __vdso_gettimeofday; + __vdso_clock_getres; #endif local: *; }; diff --git a/arch/mips/vdso/vgettimeofday.c b/arch/mips/vdso/vgettimeofday.c index 1c46dace041e..48e1ab32204b 100644 --- a/arch/mips/vdso/vgettimeofday.c +++ b/arch/mips/vdso/vgettimeofday.c @@ -23,6 +23,12 @@ int __vdso_gettimeofday(struct __kernel_old_timeval *tv, return __cvdso_gettimeofday(tv, tz); } +int __vdso_clock_getres(clockid_t clock_id, + struct old_timespec32 *res) +{ + return __cvdso_clock_getres_time32(clock_id, res); +} + #else int __vdso_clock_gettime(clockid_t clock, @@ -37,4 +43,10 @@ int __vdso_gettimeofday(struct __kernel_old_timeval *tv, return __cvdso_gettimeofday(tv, tz); } +int __vdso_clock_getres(clockid_t clock_id, + struct __kernel_timespec *res) +{ + return __cvdso_clock_getres(clock_id, res); +} + #endif