From patchwork Mon Jun 17 18:59:18 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Atish Patra X-Patchwork-Id: 11000257 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 9A5BE14DB for ; Mon, 17 Jun 2019 19:03:46 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 8E05F28767 for ; Mon, 17 Jun 2019 19:03:46 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 8BDF4289DD; Mon, 17 Jun 2019 19:03:46 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 2E242289D3 for ; Mon, 17 Jun 2019 19:03:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.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=j/zDaNgTwvUdqItsbS8WFtLSa7ooWdourOBp3rhcp04=; b=e5jIa89yFP4MrT PdqEKK9Yy9icVwcclkD5CfezEV8UeYsOCdWeGUrU1LM21PlEge4GCanvEyDTOBtXAjfld+VZEAz7X XMl+sR6YY+QESMv3czv89oqLlo3HTBQThhQlMSlRTYofnR+mYveoxiuQRb1zjKDh6k7A87VFIZmsX KXMvPvsyWXcpOtb7DguwR3wTHdtTN2rS2/zA49C6O1HEPvrLgyNA9hG4hY5OkHCON/edz4zZ6Rcgz HUYrqkn2l1+EH1VxrYA2j6MVQPnyyLAWlsioxAqcXzHLqh5cMN4W0U3mf/j6fOG4BnJkHPx30yjii 7RDoOTuo+5wIzq89kJcg==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1hcwut-0005XW-UJ; Mon, 17 Jun 2019 19:03:44 +0000 Received: from esa1.hgst.iphmx.com ([68.232.141.245]) by bombadil.infradead.org with esmtps (Exim 4.92 #3 (Red Hat Linux)) id 1hcwsB-0003VE-5c; Mon, 17 Jun 2019 19:01:01 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=wdc.com; i=@wdc.com; q=dns/txt; s=dkim.wdc.com; t=1560798055; x=1592334055; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=FdusRwcmVMWHwhKYZKA8Sg9X99lDeoGVE78siWre56A=; b=jdozColWzvkyAMfgFkRmO0V14gA0W5CAlrDZd3nt4OFwEGBRSc+7jKUF sBdteck0XcdeK2FguYcsj5yh2bOuiEYBAUauzxnvYAJkyZINm1VC3bI0n khVQpQ4ma51uEWGemdF+r/CqTjfpQ5JMRJ05ahhayU1rcehEpPi3Oyg45 ywchyOpKWLin+zKl5qIN0dtaKrvcn6S6rDXOmATCYEIYLjrgjKDuhuSLO 6nlp19+mhth0zeJslb/f8XeA2zgcFaXS6KR6tdI+B1KyLdO+nqb7q0lj2 kjoXwQner4wHHQtMr1JbLT5U+UGy76UPPaP1H2NLIv3vMu1b9+EV15iIr A==; X-IronPort-AV: E=Sophos;i="5.63,386,1557158400"; d="scan'208";a="217145878" Received: from h199-255-45-15.hgst.com (HELO uls-op-cesaep02.wdc.com) ([199.255.45.15]) by ob1.hgst.iphmx.com with ESMTP; 18 Jun 2019 03:00:53 +0800 IronPort-SDR: lark6FSEkc2GXfE7tZqKGC9z/H41Foz95Kr7TiwGB3TWVu5JYUBqUpkVnmN0HmhtxopwkrwBDD O2mpvFvK1kbKW46HI6YVWXQTW/qXgN7id4jBG7/hDTEb6tQaKmsoqjAQQ3I3fy89qR438MWcMA wYiF0QGefrZ1fC/vCkK+SHI/XWJIp8tyGQqgSCS8S2B201TZa0YOyy+Hs917G7mysK1t4A2jIR uXcdnImmUzGj/J6EAEN2CKFTi4t1CIOJ6s9dl1n1qdrQpPUL3wQMO6CFz+Tq2jcfDhlhnT3ExC x5vk68hZPPB7HZzSSRSBwBom Received: from uls-op-cesaip01.wdc.com ([10.248.3.36]) by uls-op-cesaep02.wdc.com with ESMTP; 17 Jun 2019 12:00:23 -0700 IronPort-SDR: zJubSC4vCo5jqsd42gSsbVN/4doMi68FO7XiOle1TUfLfMPXN6wZP2lcTR+aBUYXaFVE5T7mCV Yp3NzoCU4Y2XpnoKnDsi/VUpWSP9tNuczvEyZoD6d1c9yPq6OJSTb5tdVJ46EG19vadZxhQsea a9RXFQLbpka2H3p+WDc23vduv3b3WkQ/LZqWi04t3SrejMK4FwC2XcI6ITBJ2At29H2CRGEUaa v69yCj/PPY4KbZeSRiM5PpS7Blo2ZKFbth72KvUGe7x0U/yg20Ub6/loOEkI6UbyeLzfiWZeVJ EQc= Received: from jedi-01.sdcorp.global.sandisk.com (HELO jedi-01.int.fusionio.com) ([10.11.143.218]) by uls-op-cesaip01.wdc.com with ESMTP; 17 Jun 2019 12:00:51 -0700 From: Atish Patra To: linux-kernel@vger.kernel.org, Russell King Subject: [PATCH v7 5/7] RISC-V: Parse cpu topology during boot. Date: Mon, 17 Jun 2019 11:59:18 -0700 Message-Id: <20190617185920.29581-6-atish.patra@wdc.com> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190617185920.29581-1-atish.patra@wdc.com> References: <20190617185920.29581-1-atish.patra@wdc.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190617_120055_431015_EA182349 X-CRM114-Status: GOOD ( 12.38 ) 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 Rutland , "Rafael J. Wysocki" , "Peter Zijlstra \(Intel\)" , Catalin Marinas , Linus Walleij , Palmer Dabbelt , Will Deacon , Richard Fontana , Mauro Carvalho Chehab , linux-riscv@lists.infradead.org, Morten Rasmussen , Anup Patel , Ingo Molnar , devicetree@vger.kernel.org, Albert Ou , Rob Herring , Paul Walmsley , Jonathan Cameron , Thomas Gleixner , linux-arm-kernel@lists.infradead.org, Atish Patra , Greg Kroah-Hartman , Otto Sabart , Sudeep Holla , "David S. Miller" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP Currently, there are no topology defined for RISC-V. Parse the cpu-map node from device tree and setup the cpu topology. CPU topology after applying the patch. $cat /sys/devices/system/cpu/cpu2/topology/core_siblings_list 0-3 $cat /sys/devices/system/cpu/cpu3/topology/core_siblings_list 0-3 $cat /sys/devices/system/cpu/cpu3/topology/physical_package_id 0 $cat /sys/devices/system/cpu/cpu3/topology/core_id 3 Signed-off-by: Atish Patra Acked-by: Sudeep Holla Acked-by: Paul Walmsley --- arch/riscv/Kconfig | 1 + arch/riscv/kernel/smpboot.c | 3 +++ 2 files changed, 4 insertions(+) diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig index 0c4b12205632..2d8a16299a85 100644 --- a/arch/riscv/Kconfig +++ b/arch/riscv/Kconfig @@ -47,6 +47,7 @@ config RISCV select PCI_MSI if PCI select RISCV_TIMER select GENERIC_IRQ_MULTI_HANDLER + select GENERIC_ARCH_TOPOLOGY if SMP select ARCH_HAS_PTE_SPECIAL select ARCH_HAS_MMIOWB select HAVE_EBPF_JIT if 64BIT diff --git a/arch/riscv/kernel/smpboot.c b/arch/riscv/kernel/smpboot.c index 7462a44304fe..18ae6da5115e 100644 --- a/arch/riscv/kernel/smpboot.c +++ b/arch/riscv/kernel/smpboot.c @@ -8,6 +8,7 @@ * Copyright (C) 2017 SiFive */ +#include #include #include #include @@ -35,6 +36,7 @@ static DECLARE_COMPLETION(cpu_running); void __init smp_prepare_boot_cpu(void) { + init_cpu_topology(); } void __init smp_prepare_cpus(unsigned int max_cpus) @@ -138,6 +140,7 @@ asmlinkage void __init smp_callin(void) trap_init(); notify_cpu_starting(smp_processor_id()); + update_siblings_masks(smp_processor_id()); set_cpu_online(smp_processor_id(), 1); /* * Remote TLB flushes are ignored while the CPU is offline, so emit