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 X-Spam-Level: X-Spam-Status: No, score=-10.2 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,UNWANTED_LANGUAGE_BODY,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E754AC433DF for ; Wed, 19 Aug 2020 12:15:11 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id B55A4206DA for ; Wed, 19 Aug 2020 12:15:11 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="pXhtshep"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="hGdWwUzz" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B55A4206DA Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To:Message-Id:Date: Subject:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=EykKO0oFsw+OaTAL3+5ClNFIFBB1K3wYiyaCln+j7IY=; b=pXhtshepjKYqvQBjOODb6SqFc LZc39zFJkI4NeQvkWP/DdIYfWt/oW2q0OsMn9aMjddS2KnDILqI+2zn+1stHxMqjnkID7eLdAlczL Nn6Mazd5iBHbI13msMCZZ9tFRgUrEyUXyBPzOG4Y/W2bol4VZsnGzWhxkubIGxF1hBBe+k4wlQvkh IxhE6y4dJw3KiLTCaWO6LYKTPpWp4RPM6SP0VDGcqnFHs65iopv8CznUq3ttSjHC/troTk2MRSRnY u5QIclEca4UweGRuemAvhkneuMX69CpfPvrH270Jph4JxyeKPA2aOKQYZQ05U782x5Jva/iXMSoFt 2Z1j7Y4yQ==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1k8Myr-0003n7-8D; Wed, 19 Aug 2020 12:14:13 +0000 Received: from mail.kernel.org ([198.145.29.99]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1k8Myk-0003ky-KS for linux-arm-kernel@lists.infradead.org; Wed, 19 Aug 2020 12:14:07 +0000 Received: from localhost (fw-tnat.cambridge.arm.com [217.140.96.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 874C6206DA; Wed, 19 Aug 2020 12:14:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1597839246; bh=Ftm+BgFLcJzi0bjTiz8IjEJjLINWXFqX3Rrl97pTpb8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=hGdWwUzzLPnSon0iOKaq9SG/crBOPwsDLkl71Tmfh0jMLTfAf5jQ4WHrDimzHvqzI OLN3vtTxqe9E7ih91kchWM5gj1ra76v0Nyi+KCdk8cnu3GXosZ+xi8pK9yc/Yw0CjH GdTJGU0vhRSRF45VGT10z4h5NCYSpUPUYb7Hs2sA= From: Mark Brown To: Catalin Marinas , Will Deacon Subject: [PATCH v3 3/5] arm64: vdso: Initialise the per-CPU vDSO data Date: Wed, 19 Aug 2020 13:13:16 +0100 Message-Id: <20200819121318.52158-4-broonie@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200819121318.52158-1-broonie@kernel.org> References: <20200819121318.52158-1-broonie@kernel.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200819_081406_805981_CF75102E X-CRM114-Status: GOOD ( 16.44 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Brown , Vincenzo Frascino , Shuah Khan , linux-kselftest@vger.kernel.org, linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Register with the CPU hotplug system to initialise the per-CPU data for getcpu(). Signed-off-by: Mark Brown --- arch/arm64/kernel/vdso.c | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) diff --git a/arch/arm64/kernel/vdso.c b/arch/arm64/kernel/vdso.c index 2a8d7ab76bee..d9743c659341 100644 --- a/arch/arm64/kernel/vdso.c +++ b/arch/arm64/kernel/vdso.c @@ -9,6 +9,7 @@ #include #include +#include #include #include #include @@ -18,6 +19,7 @@ #include #include #include +#include #include #include #include @@ -466,6 +468,26 @@ int aarch32_setup_additional_pages(struct linux_binprm *bprm, int uses_interp) } #endif /* CONFIG_COMPAT */ +static void vdso_cpu_init(void *p) +{ + struct arm64_vdso_data *data = (struct arm64_vdso_data *)vdso_data; + unsigned int cpu; + + if (vdso_cpu_offset()) { + cpu = smp_processor_id(); + + data->cpu_data[cpu].cpu = cpu; + data->cpu_data[cpu].node = cpu_to_node(cpu); + } +} + +static int vdso_cpu_online(unsigned int cpu) +{ + smp_call_function_single(cpu, vdso_cpu_init, NULL, 1); + + return 0; +} + static int vdso_mremap(const struct vm_special_mapping *sm, struct vm_area_struct *new_vma) { @@ -494,6 +516,12 @@ static int __init vdso_init(void) vdso_info[VDSO_ABI_AA64].dm = &aarch64_vdso_maps[AA64_MAP_VVAR]; vdso_info[VDSO_ABI_AA64].cm = &aarch64_vdso_maps[AA64_MAP_VDSO]; + /* + * Initialize per-CPU data, callback runs for all current and + * future CPUs. + */ + cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "vdso", vdso_cpu_online, NULL); + return __vdso_init(VDSO_ABI_AA64); } arch_initcall(vdso_init); -- 2.20.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel