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GET /api/patches/2221822/?format=api
{ "id": 2221822, "url": "http://patchwork.ozlabs.org/api/patches/2221822/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linuxppc-dev/patch/20260410120319.131582521@kernel.org/", "project": { "id": 2, "url": "http://patchwork.ozlabs.org/api/projects/2/?format=api", "name": "Linux PPC development", "link_name": "linuxppc-dev", "list_id": "linuxppc-dev.lists.ozlabs.org", "list_email": "linuxppc-dev@lists.ozlabs.org", "web_url": "https://github.com/linuxppc/wiki/wiki", "scm_url": "https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git", "webscm_url": "https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/", "list_archive_url": "https://lore.kernel.org/linuxppc-dev/", "list_archive_url_format": "https://lore.kernel.org/linuxppc-dev/{}/", "commit_url_format": "https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/commit/?id={}" }, "msgid": "<20260410120319.131582521@kernel.org>", "list_archive_url": "https://lore.kernel.org/linuxppc-dev/20260410120319.131582521@kernel.org/", "date": "2026-04-10T12:20:21", "name": "[23/38] alpha: Select ARCH_HAS_RANDOM_ENTROPY", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "8af36c39add0aefadd4260113a601f0097e4a41b", "submitter": { "id": 92397, "url": "http://patchwork.ozlabs.org/api/people/92397/?format=api", "name": "Thomas Gleixner", "email": "tglx@kernel.org" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linuxppc-dev/patch/20260410120319.131582521@kernel.org/mbox/", "series": [ { "id": 499449, "url": "http://patchwork.ozlabs.org/api/series/499449/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linuxppc-dev/list/?series=499449", "date": "2026-04-10T12:18:27", "name": "treewide: Cleanup LATCH, CLOCK_TICK_RATE and get_cycles() [ab]use", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/499449/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2221822/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2221822/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "\n <linuxppc-dev+bounces-19593-incoming=patchwork.ozlabs.org@lists.ozlabs.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "linuxppc-dev@lists.ozlabs.org" ], "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256\n header.s=k20201202 header.b=c0dC5Jtr;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=lists.ozlabs.org\n (client-ip=112.213.38.117; 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Fri, 10 Apr 2026 22:21:21 +1000 (AEST)", "from boromir.ozlabs.org (localhost [127.0.0.1])\n\tby lists.ozlabs.org (Postfix) with ESMTP id 4fsbVM1msjz2yql;\n\tFri, 10 Apr 2026 22:20:27 +1000 (AEST)", "from sea.source.kernel.org (sea.source.kernel.org\n [IPv6:2600:3c0a:e001:78e:0:1991:8:25])\n\t(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n\t key-exchange x25519)\n\t(No client certificate requested)\n\tby lists.ozlabs.org (Postfix) with ESMTPS id 4fsbVL3X91z2xLt\n\tfor <linuxppc-dev@lists.ozlabs.org>; Fri, 10 Apr 2026 22:20:26 +1000 (AEST)", "from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58])\n\tby sea.source.kernel.org (Postfix) with ESMTP id A040C438DE;\n\tFri, 10 Apr 2026 12:20:24 +0000 (UTC)", "by smtp.kernel.org (Postfix) with ESMTPSA id 8B8D1C2BCAF;\n\tFri, 10 Apr 2026 12:20:23 +0000 (UTC)" ], "ARC-Seal": "i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1775823627;\n\tcv=none;\n b=gRShfVC81QdbG+ZN1Yeea5wF4Qn7waCPQxR5uLvLVUDwwZpCafOXwfAxW1KaAjpHW3R37o9zWgkbcHM9vKmLG+DO1mgSXW4uA163Dm1AcZsqQVySSi0GdFSih1f1VK3Mf+kT3j9uWM9YalJWWSKObPFLGjzZFqyXMB5VNCtXdGg0LQwrgVGllMV3EKyUl5ZDeyQizwnpG+hjHAdAXiwk15MoGb67dqN4h/07Q4UsYtVdo/0foYjDB3N2rjbU2CvkJZypyvIhMHAnbazuCTqStfHzahveaPGxfQQl1paTc8Xr43485P+p0qYzIZQQybcau3m0gWPn6tUkxMnhZG3mkA==", "ARC-Message-Signature": "i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707;\n\tt=1775823627; c=relaxed/relaxed;\n\tbh=ckn3790Plbsh2S84qXvQH3wmGMizlSPUdQHepF2eyP4=;\n\th=Date:Message-ID:From:To:Cc:Subject:References:MIME-Version:\n\t Content-Type;\n b=XjpIowMjlCouRiXDRTgwsp5n/iF9HzZY8IrkJEDZ/B51HiViWD63wUafWUuJ43Kh4prVcv5wawN7EbOvyYOemUFvYTFPB0C0gE9xmiMjtCFxBuMf93E29/PKA75jraE8ZgWjHBb+SvtPKu4IlQmDKyC6SxyZWpjLG2G5HNLDEr9QSxRBjmrZngIFqcPNfEpz9rWhHoeUIdUs28qNYsohv5RHkpL1xjFqBN/ZgG1DmRrgg+MTJ2K/pAhiEyGWr6o3bKV27E3BJVFL4itZUDT3ln3MAisEUTK0fl6lGdamBpx2z0uqxpJ7PeH95u9KpXDqj+3okqs69y6CjcenYCes+g==", "ARC-Authentication-Results": "i=1; lists.ozlabs.org;\n dmarc=pass (p=quarantine dis=none) header.from=kernel.org;\n dkim=pass (2048-bit key;\n unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256\n header.s=k20201202 header.b=c0dC5Jtr; dkim-atps=neutral;\n spf=pass (client-ip=2600:3c0a:e001:78e:0:1991:8:25;\n helo=sea.source.kernel.org; envelope-from=tglx@kernel.org;\n receiver=lists.ozlabs.org) smtp.mailfrom=kernel.org", "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org;\n\ts=k20201202; t=1775823624;\n\tbh=oFanz67wDB6XocOAPDGw4dDZpTIkPCesLmisdDG6nxo=;\n\th=Date:From:To:Cc:Subject:References:From;\n\tb=c0dC5JtrlZ2hDwVhQHVakSSF0GbYurUcyOeInN2NikRGB2GB116TXZbw4nZgMtYST\n\t +trrlORaNRGlhOHpfrC+lW1HFBRAEy8GyOUXKZu1wlydXKozlVO6l7tAEsojNrD9kY\n\t z8EDy3AU6BDmVg1em2KMGfc38GeNfIIV9PZdmIDh6XXPID1ZvpPfEKL37BFIXkriEy\n\t vg9bLTMeocXCte6TCzTTMg21Eh6HrXJDyZdGV1tmWvL/lAElJukNPv/QpJCLNXioOw\n\t AQtioNlgi2FcvW/yMQPolJ5GR/97GritVQBv4kElLuN4ah4YH0PTQC3eZtbzxU1vfd\n\t IORnVjKLVUNIw==", "Date": "Fri, 10 Apr 2026 14:20:21 +0200", "Message-ID": "<20260410120319.131582521@kernel.org>", "User-Agent": "quilt/0.68", "From": "Thomas Gleixner <tglx@kernel.org>", "To": "LKML <linux-kernel@vger.kernel.org>", "Cc": "Richard Henderson <richard.henderson@linaro.org>,\n linux-alpha@vger.kernel.org,\n Arnd Bergmann <arnd@arndb.de>,\n x86@kernel.org,\n Lu Baolu <baolu.lu@linux.intel.com>,\n iommu@lists.linux.dev,\n Michael Grzeschik <m.grzeschik@pengutronix.de>,\n netdev@vger.kernel.org,\n linux-wireless@vger.kernel.org,\n Herbert Xu <herbert@gondor.apana.org.au>,\n linux-crypto@vger.kernel.org,\n Vlastimil Babka <vbabka@kernel.org>,\n linux-mm@kvack.org,\n David Woodhouse <dwmw2@infradead.org>,\n Bernie Thompson <bernie@plugable.com>,\n linux-fbdev@vger.kernel.org,\n \"Theodore Tso\" <tytso@mit.edu>,\n linux-ext4@vger.kernel.org,\n Andrew Morton <akpm@linux-foundation.org>,\n Uladzislau Rezki <urezki@gmail.com>,\n Marco Elver <elver@google.com>,\n Dmitry Vyukov <dvyukov@google.com>,\n kasan-dev@googlegroups.com,\n Andrey Ryabinin <ryabinin.a.a@gmail.com>,\n Thomas Sailer <t.sailer@alumni.ethz.ch>,\n linux-hams@vger.kernel.org,\n \"Jason A. Donenfeld\" <Jason@zx2c4.com>,\n Russell King <linux@armlinux.org.uk>,\n linux-arm-kernel@lists.infradead.org,\n Catalin Marinas <catalin.marinas@arm.com>,\n Huacai Chen <chenhuacai@kernel.org>,\n loongarch@lists.linux.dev,\n Geert Uytterhoeven <geert@linux-m68k.org>,\n linux-m68k@lists.linux-m68k.org,\n Dinh Nguyen <dinguyen@kernel.org>,\n Jonas Bonn <jonas@southpole.se>,\n linux-openrisc@vger.kernel.org,\n Helge Deller <deller@gmx.de>,\n linux-parisc@vger.kernel.org,\n Michael Ellerman <mpe@ellerman.id.au>,\n linuxppc-dev@lists.ozlabs.org,\n Paul Walmsley <pjw@kernel.org>,\n linux-riscv@lists.infradead.org,\n Heiko Carstens <hca@linux.ibm.com>,\n linux-s390@vger.kernel.org,\n \"David S. Miller\" <davem@davemloft.net>,\n sparclinux@vger.kernel.org", "Subject": "[patch 23/38] alpha: Select ARCH_HAS_RANDOM_ENTROPY", "References": "<20260410120044.031381086@kernel.org>", "X-Mailing-List": "linuxppc-dev@lists.ozlabs.org", "List-Id": "<linuxppc-dev.lists.ozlabs.org>", "List-Help": "<mailto:linuxppc-dev+help@lists.ozlabs.org>", "List-Owner": "<mailto:linuxppc-dev+owner@lists.ozlabs.org>", "List-Post": "<mailto:linuxppc-dev@lists.ozlabs.org>", "List-Archive": "<https://lore.kernel.org/linuxppc-dev/>,\n <https://lists.ozlabs.org/pipermail/linuxppc-dev/>", "List-Subscribe": "<mailto:linuxppc-dev+subscribe@lists.ozlabs.org>,\n <mailto:linuxppc-dev+subscribe-digest@lists.ozlabs.org>,\n <mailto:linuxppc-dev+subscribe-nomail@lists.ozlabs.org>", "List-Unsubscribe": "<mailto:linuxppc-dev+unsubscribe@lists.ozlabs.org>", "Precedence": "list", "MIME-Version": "1.0", "Content-Type": "text/plain; charset=UTF-8", "X-Spam-Status": "No, score=-0.2 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED,\n\tDKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,SPF_HELO_NONE,SPF_PASS\n\tautolearn=disabled version=4.0.1 OzLabs 8", "X-Spam-Checker-Version": "SpamAssassin 4.0.1 (2024-03-25) on lists.ozlabs.org" }, "content": "The only remaining usage of get_cycles() is to provide\nrandom_get_entropy().\n\nSwitch alpha over to the new scheme of selecting ARCH_HAS_RANDOM_ENTROPY\nand providing random_get_entropy() in asm/random.h.\n\nRemove asm/timex.h as it has no functionality anymore.\n\nSigned-off-by: Thomas Gleixner <tglx@kernel.org>\nCc: Richard Henderson <richard.henderson@linaro.org>\nCc: linux-alpha@vger.kernel.org\n---\n arch/alpha/Kconfig | 1 +\n arch/alpha/include/asm/random.h | 14 ++++++++++++++\n arch/alpha/include/asm/timex.h | 26 --------------------------\n 3 files changed, 15 insertions(+), 26 deletions(-)", "diff": "--- a/arch/alpha/Kconfig\n+++ b/arch/alpha/Kconfig\n@@ -5,6 +5,7 @@ config ALPHA\n \tselect ARCH_32BIT_USTAT_F_TINODE\n \tselect ARCH_HAS_CURRENT_STACK_POINTER\n \tselect ARCH_HAS_DMA_OPS if PCI\n+\tselect ARCH_HAS_RANDOM_ENTROPY\n \tselect ARCH_MIGHT_HAVE_PC_PARPORT\n \tselect ARCH_MIGHT_HAVE_PC_SERIO\n \tselect ARCH_MODULE_NEEDS_WEAK_PER_CPU if SMP\n--- /dev/null\n+++ b/arch/alpha/include/asm/random.h\n@@ -0,0 +1,14 @@\n+/* SPDX-License-Identifier: GPL-2.0 */\n+#ifndef _ASMALPHA_RANDOM_H\n+#define _ASMALPHA_RANDOM_H\n+\n+/* Use the cycle counter for entropy. */\n+static inline unsigned long random_get_entropy(void)\n+{\n+\tunsigned long ret;\n+\n+\t__asm__ __volatile__ (\"rpcc %0\" : \"=r\"(ret));\n+\treturn ret;\n+}\n+\n+#endif\n--- a/arch/alpha/include/asm/timex.h\n+++ /dev/null\n@@ -1,26 +0,0 @@\n-/* SPDX-License-Identifier: GPL-2.0 */\n-/*\n- * linux/include/asm-alpha/timex.h\n- *\n- * ALPHA architecture timex specifications\n- */\n-#ifndef _ASMALPHA_TIMEX_H\n-#define _ASMALPHA_TIMEX_H\n-\n-/*\n- * Standard way to access the cycle counter.\n- * Currently only used on SMP for scheduling.\n- *\n- * Only the low 32 bits are available as a continuously counting entity. \n- * But this only means we'll force a reschedule every 8 seconds or so,\n- * which isn't an evil thing.\n- */\n-static inline cycles_t get_cycles (void)\n-{\n-\tcycles_t ret;\n-\t__asm__ __volatile__ (\"rpcc %0\" : \"=r\"(ret));\n-\treturn ret;\n-}\n-#define get_cycles get_cycles\n-\n-#endif\n", "prefixes": [ "23/38" ] }