From patchwork Mon Mar 3 11:11:02 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Thomas_Wei=C3=9Fschuh?= X-Patchwork-Id: 13998659 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 B90E7C282C5 for ; Mon, 3 Mar 2025 11:34:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Cc:To: Content-Transfer-Encoding:Content-Type:MIME-Version:Message-Id:Date:Subject: From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=IQ622J09wSnJWNXssDApHCSJm6KRM8/tA7lFNZ5FTck=; b=l+sbPdQb5OU23c Ihv4ogFOu3HNyRVsYHRqWWndrWotxtAtf4F3GXn3JBISkkdWDp4xINd7MLCNLmV0+R6i1yeQ5SoBT PBx3WbnqCfI7+G5+cwbmfCjbe3a2E5RBeE2o476NF+i395/rzV7RngUix/bsMHBpSagvhmA3g0em1 w6MkPrqMkn66QHVldZZsV5Hwqg5mebbDeDGr7/dO11Y5vq+Lj/nRz6B/Goej3vCbHQkLMoaWIPBHD i6GhQU9NHw5rv669bKKj2upL8F6VZ/boCSUJRd4KbO7CApEMIYAkyhPJqHH4mom/8YeQridyCBe08 sXlKF92s1MjQV6y7LdaA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tp43q-00000000aD2-10Yd; Mon, 03 Mar 2025 11:34:14 +0000 Received: from galois.linutronix.de ([2a0a:51c0:0:12e:550::1]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1tp3hX-00000000Tm6-0dla for linux-arm-kernel@lists.infradead.org; Mon, 03 Mar 2025 11:11:12 +0000 From: =?utf-8?q?Thomas_Wei=C3=9Fschuh?= DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1741000267; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=IQ622J09wSnJWNXssDApHCSJm6KRM8/tA7lFNZ5FTck=; b=wLmUqqTwTEyy8MN+fvUkhrzIqy6uOM6lVHR4jNdAeed/O8S0iqujK3aI4lGi+I3tqudxPw s2kIvGZ/MXyYVsQ2TqmdwnG18vmfKYSXzOhf5Aw9fndCMClBY7UvTjVWEXtE3xS5f7RqVn PQf7QcpBStHo1rBnCeWDhILSYYwI7qMGPTS0RviAt1Oy2cNEs180RPDVdtyda8W1ns7Iy9 F6Vnmc2BDvBIXsbn8MLerHwdRVwBXudM4h3rwx+UXEWi/LSPZEzXXnHpFdlZzAcnAwiUAP 5Lj2VkmHFVjYjg3fvs/gqFY0Ct2mskGOlUZKpYaitXChC2S6wwZYvOmvbnkzNg== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1741000267; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=IQ622J09wSnJWNXssDApHCSJm6KRM8/tA7lFNZ5FTck=; b=FEFBlftntzm1vKKKD24mat2WNu3kCRIaYgAe0BZIAp5Y/dJrf3bIDUHH00UOGa0SCDwvKB I30YLz81uY0Z1kDA== Subject: [PATCH 00/19] vdso: Rework struct vdso_time_data and introduce struct vdso_clock Date: Mon, 03 Mar 2025 12:11:02 +0100 Message-Id: <20250303-vdso-clock-v1-0-c1b5c69a166f@linutronix.de> MIME-Version: 1.0 X-B4-Tracking: v=1; b=H4sIAEaOxWcC/03M0QrCIBTG8VcZ5zpDZdrWVe8Ru1h6bIeGhi5ZD N89GwRd/j/4fhskjIQJzs0GETMlCr6GODRgptHfkZGtDZJLxaVsWbYpMDMH82BOcMfFybS3jkM 9PCM6WnfsOtSeKC0hvnc7i+/6Y9Q/kwXjrNMC+1GrUffqMpN/LTF4Wo8WYSilfAAsE0v1qAAAA A== X-Change-ID: 20250224-vdso-clock-f10f017c4b80 To: Andy Lutomirski , Thomas Gleixner , Vincenzo Frascino , Catalin Marinas , Will Deacon , Anna-Maria Behnsen , Frederic Weisbecker , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org, "H. Peter Anvin" , Madhavan Srinivasan , Michael Ellerman , Nicholas Piggin , Christophe Leroy , Naveen N Rao , Heiko Carstens , Vasily Gorbik , Alexander Gordeev , Christian Borntraeger , Sven Schnelle , Arnd Bergmann Cc: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org, linux-arch@vger.kernel.org, Nam Cao , =?utf-8?q?Thom?= =?utf-8?q?as_Wei=C3=9Fschuh?= X-Developer-Signature: v=1; a=ed25519-sha256; t=1741000267; l=2911; i=thomas.weissschuh@linutronix.de; s=20240209; h=from:subject:message-id; bh=JRTZEJBPOrhvUumVmufXGEQ++pbOss4FsXl+ME7xP/I=; b=1QrxVPPkzlKNesg8VwMiDXqZyZeYfZHfZ0peP4IrutVSqOiCMC4+/wyQO3rgzJ5xf+SxSKr84 +t7EqeEhu9OAio50sRM6KyHRpohlV/LcxVaombILHk3/QzfOiPs5F4E X-Developer-Key: i=thomas.weissschuh@linutronix.de; a=ed25519; pk=pfvxvpFUDJV2h2nY0FidLUml22uGLSjByFbM6aqQQws= X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250303_031111_472749_2DB2FCFA X-CRM114-Status: UNSURE ( 9.27 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org To support multiple PTP clocks, the VDSO data structure needs to be reworked. All clock specific data will end up in struct vdso_clock and in struct vdso_time_data there will be an array of it. This series is based on and intended to be merged through tip/timers/vdso. Signed-off-by: Thomas Weißschuh --- Anna-Maria Behnsen (15): vdso: Make vdso_time_data cacheline aligned vdso/datapage: Define for vdso_data to make rework of vdso possible vdso/helpers: Prepare introduction of struct vdso_clock vdso/gettimeofday: Prepare introduction of struct vdso_clock vdso/gettimeofday: Prepare do_hres() for introduction of struct vdso_clock vdso/gettimeofday: Prepare do_hres_timens() for introduction of struct vdso_clock vdso/gettimeofday: Prepare do_coarse() for introduction of struct vdso_clock vdso/gettimeofday: Prepare do_coarse_timens() for introduction of struct vdso_clock vdso/gettimeofday: Prepare helper functions for introduction of struct vdso_clock vdso/vsyscall: Prepare introduction of struct vdso_clock vdso/namespace: Rename timens_setup_vdso_data() to reflect new vdso_clock struct time/namespace: Prepare introduction of struct vdso_clock x86/vdso: Prepare introduction of struct vdso_clock vdso: Move arch related data before basetime vdso: Rework struct vdso_time_data and introduce struct vdso_clock Nam Cao (2): arm64/vdso: Prepare introduction of struct vdso_clock powerpc/vdso: Prepare introduction of struct vdso_clock Thomas Weißschuh (2): vdso: Introduce vdso/cache.h arm64: Make asm/cache.h compatible with vDSO arch/arm64/include/asm/cache.h | 4 +- arch/arm64/include/asm/vdso/compat_gettimeofday.h | 6 +- arch/arm64/include/asm/vdso/vsyscall.h | 4 +- arch/powerpc/include/asm/vdso/gettimeofday.h | 2 +- arch/s390/kernel/time.c | 11 +- arch/x86/include/asm/vdso/gettimeofday.h | 16 +-- include/asm-generic/vdso/vsyscall.h | 2 +- include/linux/cache.h | 9 +- include/vdso/cache.h | 15 +++ include/vdso/datapage.h | 48 ++++--- include/vdso/helpers.h | 20 +-- kernel/time/namespace.c | 20 +-- kernel/time/vsyscall.c | 47 +++---- lib/vdso/datastore.c | 6 +- lib/vdso/gettimeofday.c | 146 ++++++++++++---------- 15 files changed, 196 insertions(+), 160 deletions(-) --- base-commit: ac1a42f4e4e296b5ba5fdb39444f65d6e5196240 change-id: 20250224-vdso-clock-f10f017c4b80 Best regards,