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Miller" , "Andy Lutomirski" , "Thomas Gleixner" , "Ingo Molnar" , "x86@kernel.org" , "Helge Deller" , "Sudip Mukherjee" , "Greg Kroah-Hartman" , "Timur Tabi" , "Kent Overstreet" , "David Woodhouse" , "Naveen N. Rao" , "Anil S Keshavamurthy" , "Kees Cook" , "Vincenzo Frascino" , "Juri Lelli" , "Vincent Guittot" , "Nathan Chancellor" , "Nick Desaulniers" , "Nicolas Schier" , "Alexander Viro" , =?UTF-8?Q?Uwe_Kleine-K=C3=B6nig?= , "linux-alpha@vger.kernel.org" , "linux-snps-arc@lists.infradead.org" , "linux-arm-kernel@lists.infradead.org" , "linux-trace-kernel@vger.kernel.org" , "linux-csky@vger.kernel.org" , "loongarch@lists.linux.dev" , "linux-m68k@lists.linux-m68k.org" , "linux-mips@vger.kernel.org" , "linuxppc-dev@lists.ozlabs.org" , "linux-riscv@lists.infradead.org" , "linux-s390@vger.kernel.org" , "linux-sh@vger.kernel.org" , "sparclinux@vger.kernel.org" , Netdev , "linux-parisc@vger.kernel.org" , "linux-usb@vger.kernel.org" , "linux-fbdev@vger.kernel.org" , "dri-devel@lists.freedesktop.org" , "linux-bcachefs@vger.kernel.org" , "linux-mtd@lists.infradead.org" Subject: Re: [PATCH 15/22] arch: vdso: consolidate gettime prototypes Content-Type: text/plain;charset=utf-8 Content-Transfer-Encoding: quoted-printable On Wed, Nov 8, 2023, at 19:31, Christophe Leroy wrote: > Le 08/11/2023 =C3=A0 13:58, Arnd Bergmann a =C3=A9crit=C2=A0: > powerpc has functions doing more or less the same, they are called=20 > __c_kernel_clock_gettime() and alike with their prototypes siting in=20 > arch/powerpc/include/asm/vdso/gettimeofday.h > > Should those prototypes be moved to include/vdso/gettime.h too and=20 > eventually renamed, or are they considered too powerpc specific ? I don't actually know, my initial interpretation was that these function names are part of the user ABI for the vdso, but I never looked closely enough at how vdso works to be sure what the actual ABI is. If __c_kernel_clock_gettime() etc are not part of the user-facing ABI, I think renaming them for consistency with the other architectures would be best. 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Miller" , "Andy Lutomirski" , "Thomas Gleixner" , "Ingo Molnar" , "x86@kernel.org" , "Helge Deller" , "Sudip Mukherjee" , "Greg Kroah-Hartman" , "Timur Tabi" , "Kent Overstreet" , "David Woodhouse" , "Naveen N. Rao" , "Anil S Keshavamurthy" , "Kees Cook" , "Vincenzo Frascino" , "Juri Lelli" , "Vincent Guittot" , "Nathan Chancellor" , "Nick Desaulniers" , "Nicolas Schier" , "Alexander Viro" , =?UTF-8?Q?Uwe_Kleine-K=C3=B6nig?= , "linux-alpha@vger.kernel.org" , "linux-snps-arc@lists.infradead.org" , "linux-arm-kernel@lists.infradead.org" , "linux-trace-kernel@vger.kernel.org" , "linux-csky@vger.kernel.org" , "loongarch@lists.linux.dev" , "linux-m68k@lists.linux-m68k.org" , "linux-mips@vger.kernel.org" , "linuxppc-dev@lists.ozlabs.org" , "linux-riscv@lists.infradead.org" , "linux-s390@vger.kernel.org" , "linux-sh@vger.kernel.org" , "sparclinux@vger.kernel.org" , Netdev , "linux-parisc@vger.kernel.org" , "linux-usb@vger.kernel.org" , "linux-fbdev@vger.kernel.org" , "dri-devel@lists.freedesktop.org" , "linux-bcachefs@vger.kernel.org" , "linux-mtd@lists.infradead.org" Subject: Re: [PATCH 15/22] arch: vdso: consolidate gettime prototypes X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20231108_113741_335104_49157C38 X-CRM114-Status: UNSURE ( 9.36 ) X-CRM114-Notice: Please train this message. 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Wed, 8 Nov 2023 14:37:33 -0500 (EST) X-Mailer: MessagingEngine.com Webmail Interface User-Agent: Cyrus-JMAP/3.9.0-alpha0-1108-g3a29173c6d-fm-20231031.005-g3a29173c MIME-Version: 1.0 Message-Id: In-Reply-To: References: <20231108125843.3806765-1-arnd@kernel.org> <20231108125843.3806765-16-arnd@kernel.org> Date: Wed, 08 Nov 2023 20:37:12 +0100 From: "Arnd Bergmann" To: "Christophe Leroy" , "Arnd Bergmann" , "Andrew Morton" , "linux-kernel@vger.kernel.org" , "Masahiro Yamada" , "linux-kbuild@vger.kernel.org" Cc: "Matt Turner" , "Vineet Gupta" , "Russell King" , "Catalin Marinas" , "Will Deacon" , "Steven Rostedt" , "Masami Hiramatsu" , "Mark Rutland" , guoren , "Peter Zijlstra" , "Ard Biesheuvel" , "Huacai Chen" , "Greg Ungerer" , "Michal Simek" , "Thomas Bogendoerfer" , "Dinh Nguyen" , "Michael Ellerman" , "Nicholas Piggin" , "Geoff Levand" , "Palmer Dabbelt" , "Heiko Carstens" , "John Paul Adrian Glaubitz" , "David S . 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Rao" , "Anil S Keshavamurthy" , "Kees Cook" , "Vincenzo Frascino" , "Juri Lelli" , "Vincent Guittot" , "Nathan Chancellor" , "Nick Desaulniers" , "Nicolas Schier" , "Alexander Viro" , =?UTF-8?Q?Uwe_Kleine-K=C3=B6nig?= , "linux-alpha@vger.kernel.org" , "linux-snps-arc@lists.infradead.org" , "linux-arm-kernel@lists.infradead.org" , "linux-trace-kernel@vger.kernel.org" , "linux-csky@vger.kernel.org" , "loongarch@lists.linux.dev" , "linux-m68k@lists.linux-m68k.org" , "linux-mips@vger.kernel.org" , "linuxppc-dev@lists.ozlabs.org" , "linux-riscv@lists.infradead.org" , "linux-s390@vger.kernel.org" , "linux-sh@vger.kernel.org" , "sparclinux@vger.kernel.org" , Netdev , "linux-parisc@vger.kernel.org" , "linux-usb@vger.kernel.org" , "linux-fbdev@vger.kernel.org" , "dri-devel@lists.freedesktop.org" , "linux-bcachefs@vger.kernel.org" , "linux-mtd@lists.infradead.org" Subject: Re: [PATCH 15/22] arch: vdso: consolidate gettime prototypes X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20231108_113741_335104_49157C38 X-CRM114-Status: UNSURE ( 9.36 ) X-CRM114-Notice: Please train this message. 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Wed, 8 Nov 2023 14:37:33 -0500 (EST) X-Mailer: MessagingEngine.com Webmail Interface User-Agent: Cyrus-JMAP/3.9.0-alpha0-1108-g3a29173c6d-fm-20231031.005-g3a29173c MIME-Version: 1.0 Message-Id: In-Reply-To: References: <20231108125843.3806765-1-arnd@kernel.org> <20231108125843.3806765-16-arnd@kernel.org> Date: Wed, 08 Nov 2023 20:37:12 +0100 From: "Arnd Bergmann" To: "Christophe Leroy" , "Arnd Bergmann" , "Andrew Morton" , "linux-kernel@vger.kernel.org" , "Masahiro Yamada" , "linux-kbuild@vger.kernel.org" Subject: Re: [PATCH 15/22] arch: vdso: consolidate gettime prototypes Content-Type: text/plain;charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Mailman-Approved-At: Thu, 09 Nov 2023 08:41:16 +1100 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , Juri Lelli , "linux-fbdev@vger.kernel.org" , "x86@kernel.org" , "loongarch@lists.linux.dev" , "linux-sh@vger.kernel.org" , Peter Zijlstra , Catalin Marinas , "dri-devel@lists.freedesktop.org" , Netdev , guoren , "linux-csky@vger.kernel.org" , "sparclinux@vger.kernel.org" , "linux-riscv@lists.infradead.org" , Vincenzo Frascino , Will Deacon , Greg Ungerer , Nicolas Schier , "linux-s390@vger.kernel.org" , Vincent Guittot , Helge Deller , Huacai Chen , Russell King , Anil S Keshavamurthy , Ard Biesheuvel , "linux-bcachefs@vger.kernel.org" , Ingo Molnar , Vineet Gupta , "Naveen N. Rao" , Matt Turner , "linux-snps-arc@lists.infradead.org" , "linux-trace-kernel@vger.kernel.org" , Kees Cook , Heiko Carstens , =?UTF-8?Q?Uwe_Kleine-K=C3=B6nig?= , "linuxppc-dev@lists.ozlabs.org" , Nicholas Piggin , Nathan Chancellor , "linux-m68k@lists.linux-m68k.org" , Steven Rostedt , Andy Lutomirski , John Paul Adrian Glaubitz , Thomas Gleixner , "linux-arm-kernel@lists.infradead.org" , Michal Simek , Thomas Bogendoerfer , "linux-parisc@vger.kernel.org" , Timur Tabi , Geoff Levand , Greg Kroah-Hartman , Kent Overstreet , Nick Desaulniers , "linux-mips@vger.kernel.org" , Sudip Mukherjee , Dinh Nguyen , "linux-usb@vger.kernel.org" , Palmer Dabbelt , Masami Hiramatsu , "linux-alpha@vger.kernel.org" , "linux-mtd@lists.infradead.org" , David Woodhouse , "David S . Miller" , Alexander Viro Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" On Wed, Nov 8, 2023, at 19:31, Christophe Leroy wrote: > Le 08/11/2023 =C3=A0 13:58, Arnd Bergmann a =C3=A9crit=C2=A0: > powerpc has functions doing more or less the same, they are called=20 > __c_kernel_clock_gettime() and alike with their prototypes siting in=20 > arch/powerpc/include/asm/vdso/gettimeofday.h > > Should those prototypes be moved to include/vdso/gettime.h too and=20 > eventually renamed, or are they considered too powerpc specific ? I don't actually know, my initial interpretation was that these function names are part of the user ABI for the vdso, but I never looked closely enough at how vdso works to be sure what the actual ABI is. If __c_kernel_clock_gettime() etc are not part of the user-facing ABI, I think renaming them for consistency with the other architectures would be best. Arnd From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id D06CDC4332F for ; Wed, 8 Nov 2023 19:52:37 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id CCD1610E195; Wed, 8 Nov 2023 19:52:36 +0000 (UTC) X-Greylist: delayed 894 seconds by postgrey-1.36 at gabe; Wed, 08 Nov 2023 19:52:33 UTC Received: from new3-smtp.messagingengine.com (new3-smtp.messagingengine.com [66.111.4.229]) by gabe.freedesktop.org (Postfix) with ESMTPS id B0E4210E19A for ; Wed, 8 Nov 2023 19:52:32 +0000 (UTC) Received: from compute5.internal (compute5.nyi.internal [10.202.2.45]) by mailnew.nyi.internal (Postfix) with ESMTP id 687A25809A6; Wed, 8 Nov 2023 14:37:35 -0500 (EST) Received: from imap51 ([10.202.2.101]) by compute5.internal (MEProxy); Wed, 08 Nov 2023 14:37:35 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=arndb.de; h=cc :cc:content-transfer-encoding:content-type:content-type:date :date:from:from:in-reply-to:in-reply-to:message-id:mime-version :references:reply-to:sender:subject:subject:to:to; s=fm3; t= 1699472255; x=1699479455; bh=TuAUBn+gwTzKKR6XAwbb0F/b3IHOZTvECkt LGe4hx4g=; b=MpP4b56x0KBMpvmmk34khrpdqgaPpulwL1SW5QZNpR0pZbL+1mC tkgP6Crt1QszVtxegS3rDdmsnyHC8byp5kRjx+SPeLzX2GG7rLCItkjcgz0EdNWv Gq69ZGou2LiNrtaC7FaZPkws+icIw7tlu8NlHzzqZz3F6/T5ke0CjNfT5CzOIzcO wlzgmN6+4r3Yu6FokdfkzE9zpJNYuZ8GtMHqVYbPQiP/PZAVr4gD+0R65k8mK/GL TQX5MFWouHszC2cFQ8cULo8TEtCwqpaexq/q002RFilA2NNtMFPjUwSQebD9k8jn wAX9oI/LiWUh39T8sqdrJKhCiLqAx/VKgpA== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:cc:content-transfer-encoding :content-type:content-type:date:date:feedback-id:feedback-id :from:from:in-reply-to:in-reply-to:message-id:mime-version :references:reply-to:sender:subject:subject:to:to:x-me-proxy :x-me-proxy:x-me-sender:x-me-sender:x-sasl-enc; s=fm3; t= 1699472255; x=1699479455; bh=TuAUBn+gwTzKKR6XAwbb0F/b3IHOZTvECkt LGe4hx4g=; b=ehqYku5jaD5aa8sQ6H1yoT4VXUfRnaoNcziQHMGaIXhItKgqAj4 Hlc3loXGRlRiaTOqNhvj2uKXLY0x/2v4YoUSCCZaMgxaprHVMVkWZ5QubLY/Jb+X slx1zHyanQdRJk3AaZ/kME5bd0gKMVHE7D5VkKqAr+Xs8yhTIy0LndSevkJ+DVIO GY0/rjRxikPPYllrW3ZRaUQb789TbLCQtJmdAQFz1vAnRgOar288487BsvpEsdTp LQ4scdpYhMDJ5fvQheRWQymSodK3voIoiRxGrKzWBgQzNoPaIhI2uKhQG9ZEbG8l N6PvxTQbZDJj1iMQzok8F85XOSQCTEIlBfw== X-ME-Sender: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedvkedrudduledguddvhecutefuodetggdotefrod ftvfcurfhrohhfihhlvgemucfhrghsthforghilhdpqfgfvfdpuffrtefokffrpgfnqfgh necuuegrihhlohhuthemuceftddtnecusecvtfgvtghiphhivghnthhsucdlqddutddtmd enucfjughrpefofgggkfgjfhffhffvvefutgfgsehtqhertderreejnecuhfhrohhmpedf tehrnhguuceuvghrghhmrghnnhdfuceorghrnhgusegrrhhnuggsrdguvgeqnecuggftrf grthhtvghrnhepgeefjeehvdelvdffieejieejiedvvdfhleeivdelveehjeelteegudek tdfgjeevnecuvehluhhsthgvrhfuihiivgeptdenucfrrghrrghmpehmrghilhhfrhhomh eprghrnhgusegrrhhnuggsrdguvg X-ME-Proxy: Feedback-ID: i56a14606:Fastmail Received: by mailuser.nyi.internal (Postfix, from userid 501) id 421A9B60089; Wed, 8 Nov 2023 14:37:33 -0500 (EST) X-Mailer: MessagingEngine.com Webmail Interface User-Agent: Cyrus-JMAP/3.9.0-alpha0-1108-g3a29173c6d-fm-20231031.005-g3a29173c MIME-Version: 1.0 Message-Id: In-Reply-To: References: <20231108125843.3806765-1-arnd@kernel.org> <20231108125843.3806765-16-arnd@kernel.org> Date: Wed, 08 Nov 2023 20:37:12 +0100 From: "Arnd Bergmann" To: "Christophe Leroy" , "Arnd Bergmann" , "Andrew Morton" , "linux-kernel@vger.kernel.org" , "Masahiro Yamada" , "linux-kbuild@vger.kernel.org" Subject: Re: [PATCH 15/22] arch: vdso: consolidate gettime prototypes Content-Type: text/plain;charset=utf-8 Content-Transfer-Encoding: quoted-printable X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , Juri Lelli , "linux-fbdev@vger.kernel.org" , "x86@kernel.org" , "loongarch@lists.linux.dev" , "linux-sh@vger.kernel.org" , Peter Zijlstra , Catalin Marinas , "dri-devel@lists.freedesktop.org" , Netdev , guoren , "linux-csky@vger.kernel.org" , "sparclinux@vger.kernel.org" , "linux-riscv@lists.infradead.org" , Vincenzo Frascino , Will Deacon , Greg Ungerer , Nicolas Schier , "linux-s390@vger.kernel.org" , Vincent Guittot , Michael Ellerman , Helge Deller , Huacai Chen , Russell King , Anil S Keshavamurthy , Ard Biesheuvel , "linux-bcachefs@vger.kernel.org" , Ingo Molnar , Vineet Gupta , "Naveen N. Rao" , Matt Turner , "linux-snps-arc@lists.infradead.org" , "linux-trace-kernel@vger.kernel.org" , Kees Cook , Heiko Carstens , =?UTF-8?Q?Uwe_Kleine-K=C3=B6nig?= , "linuxppc-dev@lists.ozlabs.org" , Nicholas Piggin , Nathan Chancellor , "linux-m68k@lists.linux-m68k.org" , Steven Rostedt , Andy Lutomirski , John Paul Adrian Glaubitz , Thomas Gleixner , "linux-arm-kernel@lists.infradead.org" , Michal Simek , Thomas Bogendoerfer , "linux-parisc@vger.kernel.org" , Timur Tabi , Geoff Levand , Greg Kroah-Hartman , Kent Overstreet , Nick Desaulniers , "linux-mips@vger.kernel.org" , Sudip Mukherjee , Dinh Nguyen , "linux-usb@vger.kernel.org" , Palmer Dabbelt , Masami Hiramatsu , "linux-alpha@vger.kernel.org" , "linux-mtd@lists.infradead.org" , David Woodhouse , "David S . Miller" , Alexander Viro Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" On Wed, Nov 8, 2023, at 19:31, Christophe Leroy wrote: > Le 08/11/2023 =C3=A0 13:58, Arnd Bergmann a =C3=A9crit=C2=A0: > powerpc has functions doing more or less the same, they are called=20 > __c_kernel_clock_gettime() and alike with their prototypes siting in=20 > arch/powerpc/include/asm/vdso/gettimeofday.h > > Should those prototypes be moved to include/vdso/gettime.h too and=20 > eventually renamed, or are they considered too powerpc specific ? I don't actually know, my initial interpretation was that these function names are part of the user ABI for the vdso, but I never looked closely enough at how vdso works to be sure what the actual ABI is. If __c_kernel_clock_gettime() etc are not part of the user-facing ABI, I think renaming them for consistency with the other architectures would be best. Arnd