From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E26D63CCFA9; Fri, 10 Apr 2026 12:20:24 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775823625; cv=none; b=T0fGOea6MAaefT2KzJspzb+reflcvhJVce+XVTZfa7d7IwRgCMJjyUY+i+kbIyB3wqYDexUKre57TKZyXseHbf4COa+x0BmIGXqWHJbGxUKbkP0YQt2QYRuj/9eEJB6CcFRya20v8bHCcFxoUEFpsbiTmDZm6GSLKs1TVPELT14= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775823625; c=relaxed/simple; bh=oFanz67wDB6XocOAPDGw4dDZpTIkPCesLmisdDG6nxo=; h=Date:Message-ID:From:To:Cc:Subject:References:MIME-Version: Content-Type; b=hAoJOvRcRD5SIXTv2D+n1Y9KsY8ltJ1I/PQLZpQXXd+UWxGF5vNxB3ysr2p7ZhRMhFLgIrQTPVSCaOE1OopMxj3YmAK0YRAHzzXSf5mcgrjs4xiwXhYkiqCHkwTyCsmkB3fTJTBa7B/puxbTE0KM8HEZiJcpn1WlCTP7QOmvLzg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=c0dC5Jtr; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="c0dC5Jtr" 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> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 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