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 EBA1B7261C; Wed, 15 Apr 2026 06:48:07 +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=1776235688; cv=none; b=VC0HeiIeyPbFiMPlht12nkmj1sOzpLciXiWZzrfVe3CdzIDzMfGMaDd4M9L7dXoPu3Xn17ZUfQcJCs35e/vkLuPElTADpam7hW9ZdfalSZYuAhmiQqdJ7c/HhXIdK+9QX8sAGO4oLasX4Xd8bYeefuH1BEsNhE7tRPAWAVjp08w= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776235688; c=relaxed/simple; bh=uO1fFgRaYkEaX03uIGSllbIp0KmN4e8uhrxbiL7j6JA=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=b0DifANz9TAza/g0YGWlyJzT5cmj1b9jAXrEuvQudqCfl5mh8pMN2VV1x2+/jiRPgx0WazlQLhgh7ibkcQI/dZwKq6QLErIeBGUQOPa+o9gTiX1e30B7xxARW4oG5XxFubH77edrD36djPekrUkEd9FvBvlIzw0rcZJWWysSLkk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Wn6Hr/rv; 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="Wn6Hr/rv" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0E1D1C19424; Wed, 15 Apr 2026 06:47:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1776235687; bh=uO1fFgRaYkEaX03uIGSllbIp0KmN4e8uhrxbiL7j6JA=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=Wn6Hr/rv7RQ0mjmBpBGnHzSLGoawtRWrJKf8Yulby+TTpp7z1W2m+/e3q+cBeZYn8 9EULstKmB1P1aIGBA/hM7NfdL90zPADnWSMrSZUOJgfBI2Y0gYKo15ZH/8SN+3BCpi LFdpD3kIOkfmc5kLWHOPn/7qJv2G9rdoWFZcqmWwEJGa7DK0r7DBeorJlYNCKX5hcM Q22Qw/tg/rR1esDPVyaYxqkxnFQnTVF5/bVWUROMriQiIMAWyo9xVZRAIqfM9NCvMV JvPvhMbjPkTiWVz5ZUzK2DMWWd8bbim3aFcilo4uxvNCEcTYhNnaiu0tF2t4jRv/Q5 DezCa9n7clYBA== Message-ID: <9c33afea-7a64-456e-aa2f-bdcf7459b567@kernel.org> Date: Wed, 15 Apr 2026 08:47:55 +0200 Precedence: bulk X-Mailing-List: linux-s390@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [patch 33/38] powerpc: Select ARCH_HAS_RANDOM_ENTROPY To: Thomas Gleixner , LKML Cc: Michael Ellerman , linuxppc-dev@lists.ozlabs.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" , Richard Henderson , linux-alpha@vger.kernel.org, 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, Paul Walmsley , linux-riscv@lists.infradead.org, Heiko Carstens , linux-s390@vger.kernel.org, "David S. Miller" , sparclinux@vger.kernel.org References: <20260410120044.031381086@kernel.org> <20260410120319.789114053@kernel.org> Content-Language: fr-FR From: "Christophe Leroy (CS GROUP)" In-Reply-To: <20260410120319.789114053@kernel.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Le 10/04/2026 à 14:21, Thomas Gleixner a écrit : > The only remaining usage of get_cycles() is to provide random_get_entropy(). > > Switch powerpc 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: Michael Ellerman > Cc: linuxppc-dev@lists.ozlabs.org Reviewed-by: Christophe Leroy (CS GROUP) > --- > arch/powerpc/Kconfig | 1 + > arch/powerpc/include/asm/random.h | 13 +++++++++++++ > arch/powerpc/include/asm/timex.h | 21 --------------------- > 3 files changed, 14 insertions(+), 21 deletions(-) > > --- a/arch/powerpc/Kconfig > +++ b/arch/powerpc/Kconfig > @@ -150,6 +150,7 @@ config PPC > select ARCH_HAS_PREEMPT_LAZY > select ARCH_HAS_PTDUMP > select ARCH_HAS_PTE_SPECIAL > + select ARCH_HAS_RANDOM_ENTROPY > select ARCH_HAS_SCALED_CPUTIME if VIRT_CPU_ACCOUNTING_NATIVE && PPC_BOOK3S_64 > select ARCH_HAS_SET_MEMORY > select ARCH_HAS_STRICT_KERNEL_RWX if (PPC_BOOK3S || PPC_8xx) && !HIBERNATION > --- /dev/null > +++ b/arch/powerpc/include/asm/random.h > @@ -0,0 +1,13 @@ > +/* SPDX-License-Identifier: GPL-2.0 */ > +#ifndef _ASM_POWERPC_RANDOM_H > +#define _ASM_POWERPC_RANDOM_H > + > +#include > +#include > + > +static inline unsigned long random_get_entropy(void) > +{ > + return mftb(); > +} > + > +#endif /* _ASM_POWERPC_RANDOM_H */ > --- a/arch/powerpc/include/asm/timex.h > +++ b/arch/powerpc/include/asm/timex.h > @@ -1,21 +0,0 @@ > -/* SPDX-License-Identifier: GPL-2.0 */ > -#ifndef _ASM_POWERPC_TIMEX_H > -#define _ASM_POWERPC_TIMEX_H > - > -#ifdef __KERNEL__ > - > -/* > - * PowerPC architecture timex specifications > - */ > - > -#include > -#include > - > -ostatic inline cycles_t get_cycles(void) > -{ > - return mftb(); > -} > -#define get_cycles get_cycles > - > -#endif /* __KERNEL__ */ > -#endif /* _ASM_POWERPC_TIMEX_H */ > >