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GET /api/1.2/patches/2221828/?format=api
{ "id": 2221828, "url": "http://patchwork.ozlabs.org/api/1.2/patches/2221828/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-ext4/patch/20260410120317.776571540@kernel.org/", "project": { "id": 8, "url": "http://patchwork.ozlabs.org/api/1.2/projects/8/?format=api", "name": "Linux ext4 filesystem development", "link_name": "linux-ext4", "list_id": "linux-ext4.vger.kernel.org", "list_email": "linux-ext4@vger.kernel.org", "web_url": null, "scm_url": null, "webscm_url": null, "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20260410120317.776571540@kernel.org>", "list_archive_url": null, "date": "2026-04-10T12:18:42", "name": "[03/38] x86/apm: Remove last LATCH usage", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "0bcb602ce8821b41d570c2b8fb3596078edad428", "submitter": { "id": 92397, "url": "http://patchwork.ozlabs.org/api/1.2/people/92397/?format=api", "name": "Thomas Gleixner", "email": "tglx@kernel.org" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linux-ext4/patch/20260410120317.776571540@kernel.org/mbox/", "series": [ { "id": 499451, "url": "http://patchwork.ozlabs.org/api/1.2/series/499451/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-ext4/list/?series=499451", "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/499451/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2221828/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2221828/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "\n <SRS0=2e20=CJ=vger.kernel.org=linux-ext4+bounces-15738-patchwork-incoming=ozlabs.org@ozlabs.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "linux-ext4@vger.kernel.org" ], "Delivered-To": [ "patchwork-incoming@legolas.ozlabs.org", "patchwork-incoming@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=gYJITPmd;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=ozlabs.org\n (client-ip=2404:9400:2221:ea00::3; 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arc=none smtp.client-ip=10.30.226.201" ], "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org;\n\ts=k20201202; t=1775823526;\n\tbh=OWF9pG0hQ95RygMnh7+vDhgeHyKnJRYOWEj0GBEdTEY=;\n\th=Date:From:To:Subject:References:cc:From;\n\tb=gYJITPmdy2GNPsbI6AD2iZ7zhMgePGS+gqPbXQCs7WsAhhu/qyX8hH+Xi69K/urPl\n\t BoSeBlt4BbqU4ZnISQ8slAdj5VCjiDRcN9bfEzsBBE9dj/wWUHwDFECfvHb21gTPQ5\n\t cvjmyUKF+jJ25R6iZ5vAzO3xaA8XXwp+1aea+F9V1esc/zHHX5PN7paJBTByHcDBl2\n\t auQKRV9dXMsXdujNzqathwxe2n8RWyCswG/DXqH2EllhOxm/ndPsrTIJX4WzacriA/\n\t t/DalYn89VnEQy6E+ROiviOqorgI/E12LPFkiSGiJSdwmaaiky6k8Wx7OG7Y+w6GUr\n\t Ni5ruNMG7XCYg==", "Date": "Fri, 10 Apr 2026 14:18:42 +0200", "Message-ID": "<20260410120317.776571540@kernel.org>", "User-Agent": "quilt/0.68", "From": "Thomas Gleixner <tglx@kernel.org>", "To": "LKML <linux-kernel@vger.kernel.org>", "Subject": "[patch 03/38] x86/apm: Remove last LATCH usage", "References": "<20260410120044.031381086@kernel.org>", "Precedence": "bulk", "X-Mailing-List": "linux-ext4@vger.kernel.org", "List-Id": "<linux-ext4.vger.kernel.org>", "List-Subscribe": "<mailto:linux-ext4+subscribe@vger.kernel.org>", "List-Unsubscribe": "<mailto:linux-ext4+unsubscribe@vger.kernel.org>", "MIME-Version": "1.0", "Content-Type": "text/plain; charset=UTF-8", "cc": "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 Richard Henderson <richard.henderson@linaro.org>,\n linux-alpha@vger.kernel.org,\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", "X-Spam-Status": "No, score=-1.2 required=5.0 tests=ARC_SIGNED,ARC_VALID,\n\tDKIMWL_WL_HIGH,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DMARC_PASS,\n\tMAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=disabled\n\tversion=4.0.1", "X-Spam-Checker-Version": "SpamAssassin 4.0.1 (2024-03-25) on gandalf.ozlabs.org" }, "content": "LATCH is a historical leftover and has been replaced with PIT_LATCH in all\nother places a decade ago. Replace the last holdout and remove the\ndefinition from jiffies.h.\n\nThis allows to remove the otherwise unused CLOCK_TICK_RATE define in the\nnext step.\n\nSigned-off-by: Thomas Gleixner <tglx@kernel.org>\n---\n arch/x86/kernel/apm_32.c | 4 ++--\n include/linux/jiffies.h | 3 ---\n 2 files changed, 2 insertions(+), 5 deletions(-)", "diff": "--- a/arch/x86/kernel/apm_32.c\n+++ b/arch/x86/kernel/apm_32.c\n@@ -1196,9 +1196,9 @@ static void reinit_timer(void)\n \t/* set the clock to HZ */\n \toutb_p(0x34, PIT_MODE);\t\t/* binary, mode 2, LSB/MSB, ch 0 */\n \tudelay(10);\n-\toutb_p(LATCH & 0xff, PIT_CH0);\t/* LSB */\n+\toutb_p(PIT_LATCH & 0xff, PIT_CH0);\t/* LSB */\n \tudelay(10);\n-\toutb_p(LATCH >> 8, PIT_CH0);\t/* MSB */\n+\toutb_p(PIT_LATCH >> 8, PIT_CH0);\t/* MSB */\n \tudelay(10);\n \traw_spin_unlock_irqrestore(&i8253_lock, flags);\n #endif\n--- a/include/linux/jiffies.h\n+++ b/include/linux/jiffies.h\n@@ -56,9 +56,6 @@\n #define SH_DIV(NOM,DEN,LSH) ( (((NOM) / (DEN)) << (LSH)) \\\n + ((((NOM) % (DEN)) << (LSH)) + (DEN) / 2) / (DEN))\n \n-/* LATCH is used in the interval timer and ftape setup. */\n-#define LATCH ((CLOCK_TICK_RATE + HZ/2) / HZ)\t/* For divider */\n-\n extern void register_refined_jiffies(long clock_tick_rate);\n \n /* TICK_USEC is the time between ticks in usec */\n", "prefixes": [ "03/38" ] }