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 6FACB3C1413; Fri, 10 Apr 2026 12:21:12 +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=1775823672; cv=none; b=MRlETmY//WPSoDpXRNMc7TiRNp/42g02bAjpwXmhWjmbVfYAuwr/zXsD5OjHxqLfRpomHOPCL8eqNahleLjqO0Us3CYqM/blrlOAs5WNCnDIjzGPguHrUNYrXfxSeCxriAoEihWNHBcmRC31RTrIHXeq6rlSrURftTfLc1s7Giw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775823672; c=relaxed/simple; bh=tpcbJjrROej8+Ep0S4yh9w/0viNOJRSIBsQtj9nrduE=; h=Date:Message-ID:From:To:Cc:Subject:References:MIME-Version: Content-Type; b=JqOy1eIyVxb+rGZbSqmaIgY6ezz5rO6QzxeR3716jA4ZIM+qJg2GT3KpwfyEMyYe8R3Xvq62ZzLdiyDpwqe0owklLWAVLaA4ROpk7A6ea4iZhGe19l0TATRAXZIt1M1jW7V6GpGz4xNnKa/v2vByxLk92lRUngf8pwvg+ROk/o0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=t+6BdojJ; 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="t+6BdojJ" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8E4B2C2BC87; Fri, 10 Apr 2026 12:21:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1775823672; bh=tpcbJjrROej8+Ep0S4yh9w/0viNOJRSIBsQtj9nrduE=; h=Date:From:To:Cc:Subject:References:From; b=t+6BdojJde/UDdVdrSTxElEId1Y48xNZSVlMYQlGTL0WHNGFs3HWPQxpINyMlW0Tp I6cN87TfGyJy1fhgMX3eHxGWXyIRGEfK+oj+v7ZqgSkuHT9TIqDSO48kfeefrr2R+6 RZvls6BOQPsjm5E39PGBUAxS3ybrYUwTjTmhDryNFYGgOGgmcHGql9J5M/vSFS9Dpm Ps3dk0/gjV2/aMyaPlsNujNJN/7qos+7ycvHmAQEpnPn1tOePEJ6rKipC5ku3IQ4UE ud6vC+9M6N71X0VBW7hJfjso4CmI7VrrHXujC0k5eBTPHkHx5czFPyyVnepx/5Zgc1 GRj7R63OiiEsA== Date: Fri, 10 Apr 2026 14:21:09 +0200 Message-ID: <20260410120319.789114053@kernel.org> User-Agent: quilt/0.68 From: Thomas Gleixner To: 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 Subject: [patch 33/38] powerpc: Select ARCH_HAS_RANDOM_ENTROPY References: <20260410120044.031381086@kernel.org> Precedence: bulk X-Mailing-List: linux-crypto@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 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 --- 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 */