From patchwork Thu Jan 16 17:58:33 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christophe Leroy X-Patchwork-Id: 11337601 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 4B44A138D for ; Thu, 16 Jan 2020 18:40:31 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 289BD2077B for ; Thu, 16 Jan 2020 18:40:31 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="ghpWrbPF"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=c-s.fr header.i=@c-s.fr header.b="UQil0z6K" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 289BD2077B Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=c-s.fr Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org 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:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:Date:To:Subject: From:References:In-Reply-To:Message-Id:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Owner; bh=Sr5FqgirVL3u8TagFmjRNmJXMCva7CgZi8oPZm5skyE=; b=ghpWrbPFhVDrIal8V6KMqCXd4w CDjb4MBIVYA9ru2GnkcDWHUd7oSj/IuT1MBh2vynLfPpakaN2W7ypK+ppfkiSuMVjqmH8UONrgp5L TNoV7lFN5pbqat/utDs/GM8PF2PomAh0+fx5E/GMX2Kt/sOusoEEYEvyZut4szIabEqI7Jrn9izdO N+t3JHDZemmiRD0Fys49vkP/moAG3sojlShVhZHxmaY1W4xY37NPjILP6tujjQ4YzdQ3DCL13ZVml 2M5ErhV8s5K6f0AYKg5ShdO3R3iSB6PSVInVygZlZXijJIydeHu3NmTzVuk+P766mSVeC/cDVmjUr OaQMKCnw==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1isA4C-0002f7-Fr; Thu, 16 Jan 2020 18:40:28 +0000 Received: from pegase1.c-s.fr ([93.17.236.30]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1is9Pi-0002a4-DK for linux-arm-kernel@lists.infradead.org; Thu, 16 Jan 2020 17:58:49 +0000 Received: from localhost (mailhub1-int [192.168.12.234]) by localhost (Postfix) with ESMTP id 47zBkw4Y6lz9v4gn; Thu, 16 Jan 2020 18:58:32 +0100 (CET) Authentication-Results: localhost; dkim=pass reason="1024-bit key; insecure key" header.d=c-s.fr header.i=@c-s.fr header.b=UQil0z6K; dkim-adsp=pass; dkim-atps=neutral X-Virus-Scanned: Debian amavisd-new at c-s.fr Received: from pegase1.c-s.fr ([192.168.12.234]) by localhost (pegase1.c-s.fr [192.168.12.234]) (amavisd-new, port 10024) with ESMTP id mhPOBAGVB8j6; Thu, 16 Jan 2020 18:58:32 +0100 (CET) Received: from messagerie.si.c-s.fr (messagerie.si.c-s.fr [192.168.25.192]) by pegase1.c-s.fr (Postfix) with ESMTP id 47zBkw3RdHz9v4gc; Thu, 16 Jan 2020 18:58:32 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=c-s.fr; s=mail; t=1579197512; bh=dI2VkNAhHWcekKp95TXfWTj0joevEjoDA4cLyXKcRJs=; h=In-Reply-To:References:From:Subject:To:Cc:Date:From; b=UQil0z6KPtZoE4IIgyqrDBSU9X++9rjj8ncIeY6CZXiPoACTViMiHr1hq6MyLqjFs NYsS+kkgITXlInWdQjntooTn54GkdBh+PsKIX4v6NrruyU3YXO9ZTwlCbRP6T1mThA NiCgtiKs/DT7XbSGH03WuzM4g4BuDwB/Ys2ivoQU= Received: from localhost (localhost [127.0.0.1]) by messagerie.si.c-s.fr (Postfix) with ESMTP id 0913F8B82A; Thu, 16 Jan 2020 18:58:34 +0100 (CET) X-Virus-Scanned: amavisd-new at c-s.fr Received: from messagerie.si.c-s.fr ([127.0.0.1]) by localhost (messagerie.si.c-s.fr [127.0.0.1]) (amavisd-new, port 10023) with ESMTP id eHJ2rsSqhfWE; Thu, 16 Jan 2020 18:58:33 +0100 (CET) Received: from po14934vm.idsi0.si.c-s.fr (unknown [192.168.4.90]) by messagerie.si.c-s.fr (Postfix) with ESMTP id BFACF8B82D; Thu, 16 Jan 2020 18:58:33 +0100 (CET) Received: by po14934vm.idsi0.si.c-s.fr (Postfix, from userid 0) id 9828464A33; Thu, 16 Jan 2020 17:58:33 +0000 (UTC) Message-Id: <2bf9735a6ae5ff9b350b667c0b8434cf2bbe9b50.1579196675.git.christophe.leroy@c-s.fr> In-Reply-To: References: From: Christophe Leroy Subject: [RFC PATCH v4 09/11] powerpc/vdso: override __arch_vdso_capable() To: Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman , nathanl@linux.ibm.com, arnd@arndb.de, tglx@linutronix.de, vincenzo.frascino@arm.com, luto@kernel.org Date: Thu, 16 Jan 2020 17:58:33 +0000 (UTC) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200116_095838_661175_4336C19F X-CRM114-Status: UNSURE ( 7.79 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -0.2 (/) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (-0.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no trust [93.17.236.30 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain 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: x86@kernel.org, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mips@vger.kernel.org MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org When the timebase is used, make __arch_vdso_capable() always return true. When the RTC clock is used, make __arch_vdso_capable() always return false. Before the patch: clock-gettime-realtime: vdso: 1086 nsec/call After the patch: clock-gettime-realtime: vdso: 1033 nsec/call Signed-off-by: Christophe Leroy --- arch/powerpc/include/asm/vdso/gettimeofday.h | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/powerpc/include/asm/vdso/gettimeofday.h b/arch/powerpc/include/asm/vdso/gettimeofday.h index 0a247f9b9af9..74b6eef8fbe9 100644 --- a/arch/powerpc/include/asm/vdso/gettimeofday.h +++ b/arch/powerpc/include/asm/vdso/gettimeofday.h @@ -74,6 +74,12 @@ static __always_inline u64 __arch_get_hw_counter(s32 clock_mode) const struct vdso_data *__arch_get_vdso_data(void); +static inline bool __arch_vdso_capable(const struct vdso_data *vd) +{ + return !__USE_RTC(); +} +#define __arch_vdso_capable __arch_vdso_capable + /* * powerpc specific delta calculation. *