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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 1A1FFF4484C for ; Fri, 10 Apr 2026 12:20:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Type:MIME-Version: References:Subject:Cc:To:From:Message-ID:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To: List-Owner; bh=ckn3790Plbsh2S84qXvQH3wmGMizlSPUdQHepF2eyP4=; b=CXXdwvk71ewkhE nzWtoRS6V6FoSthXE8Rcuepv3PCIWRMhGo6GDbmBwdfAj8YnZlMi3mpmD2Jb39nuIRyDODCgE0+Xh 4Kr27fG6V7j+O4rKVi4sezHBoMp5Rdblq6cqldMR0EMMBn3hed36t778ZG8i5APTkemx6p9zMQCxB dW5fm1X5v+yzAdKAhiPGYtDZ/echACbJKPhYALykIfgBXFX5ssO+scrscIvYadm9Kbp2kncELnaoN ShtBCJD1JRZ8AXA82sZBmSzgt8513IwUTzaBXLR4DedJSqP3KGkokMYUQCRGO0z71p2bGz3n2pOlb WE6MV3BKFjvNNeIEWfvw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1wBAqn-0000000CBhl-1as1; Fri, 10 Apr 2026 12:20:41 +0000 Received: from casper.infradead.org ([2001:8b0:10b:1236::1]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1wBAqg-0000000CBTN-0Wxi; Fri, 10 Apr 2026 12:20:34 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=Content-Type:MIME-Version:References: Subject:Cc:To:From:Message-ID:Date:Sender:Reply-To:Content-Transfer-Encoding: Content-ID:Content-Description:In-Reply-To; bh=ckn3790Plbsh2S84qXvQH3wmGMizlSPUdQHepF2eyP4=; b=j/SdxwAawpRlpmm9S4X4EfD40P TOGHHQ+Th308Jqu9n6lTdagIrBDs+tdXu3wTuxnB9Me6KEhMAhb9noHOCUVUdxS0hRbQ/e/YFQ8P/ m892jQJvWex/z3JyqmrMdv38mEXtvq61biYo/Mup3raFg2iz68QdSSpbhRKqQQMN0niNLk0vw5NTI 8Eau03X0Rn0oDhC6RexEjx1jI42OqDEeo/sSaoaKnwEJm7CUTP6QyzAlGSrTJeueoh/uZ9exr7PV7 WwblWml/L6qyBYXb+4W4SNx3keqwfnVMUDUkTq7bphi3jsDmNYn3nV4gwBlEAwKhLZjXezYbDIUaW cuj/8XMw==; Received: from sea.source.kernel.org ([2600:3c0a:e001:78e:0:1991:8:25]) by casper.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1wBAqc-00000009LVU-1PsW; Fri, 10 Apr 2026 12:20:32 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sea.source.kernel.org (Postfix) with ESMTP id A040C438DE; Fri, 10 Apr 2026 12:20:24 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8B8D1C2BCAF; Fri, 10 Apr 2026 12:20:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1775823624; bh=oFanz67wDB6XocOAPDGw4dDZpTIkPCesLmisdDG6nxo=; h=Date:From:To:Cc:Subject:References:From; b=c0dC5JtrlZ2hDwVhQHVakSSF0GbYurUcyOeInN2NikRGB2GB116TXZbw4nZgMtYST +trrlORaNRGlhOHpfrC+lW1HFBRAEy8GyOUXKZu1wlydXKozlVO6l7tAEsojNrD9kY z8EDy3AU6BDmVg1em2KMGfc38GeNfIIV9PZdmIDh6XXPID1ZvpPfEKL37BFIXkriEy vg9bLTMeocXCte6TCzTTMg21Eh6HrXJDyZdGV1tmWvL/lAElJukNPv/QpJCLNXioOw AQtioNlgi2FcvW/yMQPolJ5GR/97GritVQBv4kElLuN4ah4YH0PTQC3eZtbzxU1vfd IORnVjKLVUNIw== Date: Fri, 10 Apr 2026 14:20:21 +0200 Message-ID: <20260410120319.131582521@kernel.org> User-Agent: quilt/0.68 From: Thomas Gleixner To: LKML Cc: Richard Henderson , linux-alpha@vger.kernel.org, Arnd Bergmann , x86@kernel.org, Lu Baolu , iommu@lists.linux.dev, Michael Grzeschik , netdev@vger.kernel.org, linux-wireless@vger.kernel.org, Herbert Xu , linux-crypto@vger.kernel.org, Vlastimil Babka , linux-mm@kvack.org, David Woodhouse , Bernie Thompson , linux-fbdev@vger.kernel.org, "Theodore Tso" , linux-ext4@vger.kernel.org, Andrew Morton , Uladzislau Rezki , Marco Elver , Dmitry Vyukov , kasan-dev@googlegroups.com, Andrey Ryabinin , Thomas Sailer , linux-hams@vger.kernel.org, "Jason A. Donenfeld" , Russell King , linux-arm-kernel@lists.infradead.org, Catalin Marinas , Huacai Chen , loongarch@lists.linux.dev, Geert Uytterhoeven , linux-m68k@lists.linux-m68k.org, Dinh Nguyen , Jonas Bonn , linux-openrisc@vger.kernel.org, Helge Deller , linux-parisc@vger.kernel.org, Michael Ellerman , linuxppc-dev@lists.ozlabs.org, Paul Walmsley , linux-riscv@lists.infradead.org, Heiko Carstens , linux-s390@vger.kernel.org, "David S. Miller" , sparclinux@vger.kernel.org Subject: [patch 23/38] alpha: Select ARCH_HAS_RANDOM_ENTROPY References: <20260410120044.031381086@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260410_132030_703192_7AF2F5B0 X-CRM114-Status: GOOD ( 11.89 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org The only remaining usage of get_cycles() is to provide random_get_entropy(). Switch alpha over to the new scheme of selecting ARCH_HAS_RANDOM_ENTROPY and providing random_get_entropy() in asm/random.h. Remove asm/timex.h as it has no functionality anymore. Signed-off-by: Thomas Gleixner Cc: Richard Henderson Cc: linux-alpha@vger.kernel.org --- arch/alpha/Kconfig | 1 + arch/alpha/include/asm/random.h | 14 ++++++++++++++ arch/alpha/include/asm/timex.h | 26 -------------------------- 3 files changed, 15 insertions(+), 26 deletions(-) --- a/arch/alpha/Kconfig +++ b/arch/alpha/Kconfig @@ -5,6 +5,7 @@ config ALPHA select ARCH_32BIT_USTAT_F_TINODE select ARCH_HAS_CURRENT_STACK_POINTER select ARCH_HAS_DMA_OPS if PCI + select ARCH_HAS_RANDOM_ENTROPY select ARCH_MIGHT_HAVE_PC_PARPORT select ARCH_MIGHT_HAVE_PC_SERIO select ARCH_MODULE_NEEDS_WEAK_PER_CPU if SMP --- /dev/null +++ b/arch/alpha/include/asm/random.h @@ -0,0 +1,14 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _ASMALPHA_RANDOM_H +#define _ASMALPHA_RANDOM_H + +/* Use the cycle counter for entropy. */ +static inline unsigned long random_get_entropy(void) +{ + unsigned long ret; + + __asm__ __volatile__ ("rpcc %0" : "=r"(ret)); + return ret; +} + +#endif --- a/arch/alpha/include/asm/timex.h +++ /dev/null @@ -1,26 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -/* - * linux/include/asm-alpha/timex.h - * - * ALPHA architecture timex specifications - */ -#ifndef _ASMALPHA_TIMEX_H -#define _ASMALPHA_TIMEX_H - -/* - * Standard way to access the cycle counter. - * Currently only used on SMP for scheduling. - * - * Only the low 32 bits are available as a continuously counting entity. - * But this only means we'll force a reschedule every 8 seconds or so, - * which isn't an evil thing. - */ -static inline cycles_t get_cycles (void) -{ - cycles_t ret; - __asm__ __volatile__ ("rpcc %0" : "=r"(ret)); - return ret; -} -#define get_cycles get_cycles - -#endif