From patchwork Mon Feb 10 21:12:22 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Luck, Tony" X-Patchwork-Id: 13968918 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.15]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8671E24CED5; Mon, 10 Feb 2025 21:12:35 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.15 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1739221957; cv=none; b=CtJVugP5hka7uGMi2jINFQthtA14LaDC0nmnLrWl2HOOwW1etKNFf1vpnlHAhnEeqFTXHszH6dLhjh9223WGxGAwXmilCWkWK6oAVIAjtrjcy3REXTF+ZZN0EEgxlH/Rmpg0/nUVu9EjkLoNfUPQNYSZwAPdAWZTC1tXruphtq4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1739221957; c=relaxed/simple; bh=8MX2jSRA6p3msqeidieChxEGZWfp3uNvo8+3hloLNGA=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=sz4QSRLjUvV6kUxg13XI8aSIVRCclNDdIbyL22CWQnpWot6lCQdMGYx1+Hk49wuP2TcePmLS6U54VmyvJbJwwCORI7GZiM8aotLpLKrb4W3zvGPANa81LJ7AGhD9M7zeHCiszP8zNSGc6Zgj0xCXGntq2FOco1JnVRtDB7Hg0Gk= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=MIxVqEGV; arc=none smtp.client-ip=192.198.163.15 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="MIxVqEGV" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1739221956; x=1770757956; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=8MX2jSRA6p3msqeidieChxEGZWfp3uNvo8+3hloLNGA=; b=MIxVqEGVYeDg7TtN/OMuWGreAh+yVb8mGbexBzromDcqNMdhCoVaix1Q w7VpO5D39Uk+GUYDHdXryB1MeRkXw79Y6lXOkz/GCYHckUHBMs8L35mCs WzddDgMRYI70JkgJ3rkVWw1kLwRZ5YlkhKrnqjiYEGlzzSgR92ejdH5Br VxMURjfV2gqqR2lzYVUy97Tu7ZxdHRB51vsG1DNufKuQVYmO+rlZsRPFi xcP/uG7ciulOizrf0rPMGGehL0QCouCK4MtptxuwiOv6KkFHdEdX2NtYa WEYam7WkshbgsBDD2bsqhdwP/oLyxROA1FULLkhPDYKVCbo/0Ab2DedPw g==; X-CSE-ConnectionGUID: QmfB+vwyQwy68lv/gz5iGQ== X-CSE-MsgGUID: O2KqbZK8T6+9d2I0aIVkQA== X-IronPort-AV: E=McAfee;i="6700,10204,11341"; a="39969766" X-IronPort-AV: E=Sophos;i="6.13,275,1732608000"; d="scan'208";a="39969766" Received: from fmviesa003.fm.intel.com ([10.60.135.143]) by fmvoesa109.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 10 Feb 2025 13:12:31 -0800 X-CSE-ConnectionGUID: 6f5cx5jLSf67/Q4eRH5Qig== X-CSE-MsgGUID: 9jJCCjNwSTm3QG2+dIaX/g== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.12,224,1728975600"; d="scan'208";a="116393887" Received: from agluck-desk3.sc.intel.com ([172.25.222.70]) by fmviesa003-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 10 Feb 2025 13:12:31 -0800 From: Tony Luck To: Robert Moore , "Rafael J. Wysocki" , Len Brown Cc: linux-acpi@vger.kernel.org, acpica-devel@lists.linux.dev, Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org, "H. Peter Anvin" , David Hildenbrand , Oscar Salvador , Greg Kroah-Hartman , Danilo Krummrich , Andrew Morton , linux-kernel@vger.kernel.org, Tony Luck Subject: [PATCH 3/4] ACPI/MRRM: Add "node" symlink to /sys/devices/system/memory/rangeX Date: Mon, 10 Feb 2025 13:12:22 -0800 Message-ID: <20250210211223.6139-4-tony.luck@intel.com> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250210211223.6139-1-tony.luck@intel.com> References: <20250210211223.6139-1-tony.luck@intel.com> Precedence: bulk X-Mailing-List: linux-acpi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Users will likely want to know which node owns each memory range and which CPUs are local to the range. Add a symlink to the node directory to provide both pieces of information. Signed-off-by: Tony Luck --- drivers/acpi/acpi_mrrm.c | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) diff --git a/drivers/acpi/acpi_mrrm.c b/drivers/acpi/acpi_mrrm.c index 51ed9064e025..28b484943bbd 100644 --- a/drivers/acpi/acpi_mrrm.c +++ b/drivers/acpi/acpi_mrrm.c @@ -119,6 +119,31 @@ static struct attribute *memory_range_attrs[] = { ATTRIBUTE_GROUPS(memory_range); +static __init int add_node_link(struct mrrm_mem_range_entry *entry) +{ + struct node *node = NULL; + int ret = 0; + int nid; + + for_each_online_node(nid) { + for (int z = 0; z < MAX_NR_ZONES; z++) { + struct zone *zone = NODE_DATA(nid)->node_zones + z; + + if (!populated_zone(zone)) + continue; + if (zone_intersects(zone, PHYS_PFN(entry->base), PHYS_PFN(entry->length))) { + node = node_devices[zone->node]; + goto found; + } + } + } +found: + if (node) + ret = sysfs_create_link(&entry->dev.kobj, &node->dev.kobj, "node"); + + return ret; +} + static __init int add_boot_memory_ranges(void) { char name[16]; @@ -140,6 +165,10 @@ static __init int add_boot_memory_ranges(void) put_device(&entry->dev); return ret; } + + ret = add_node_link(entry); + if (ret) + break; } return ret;