From patchwork Thu Oct 4 15:20:04 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jeffrey Hugo X-Patchwork-Id: 10626303 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 1FD0B1515 for ; Thu, 4 Oct 2018 15:20:35 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 10AA729263 for ; Thu, 4 Oct 2018 15:20:35 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 04F67292BA; Thu, 4 Oct 2018 15:20:35 +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=-7.7 required=2.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 983E029263 for ; Thu, 4 Oct 2018 15:20:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727483AbeJDWOS (ORCPT ); Thu, 4 Oct 2018 18:14:18 -0400 Received: from smtp.codeaurora.org ([198.145.29.96]:56522 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727523AbeJDWOS (ORCPT ); Thu, 4 Oct 2018 18:14:18 -0400 Received: by smtp.codeaurora.org (Postfix, from userid 1000) id 1C3C860D78; Thu, 4 Oct 2018 15:20:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1538666433; bh=9u0xT07ld+lLcCLWyAte72i16dsJNMbUZTZQZzOxcTA=; h=From:To:Cc:Subject:Date:From; b=UsgFeTC6NRYYz5BOK4j+M8h1beskr5Nmgj04MmJlRH+duihxuc8Z4+kxZxb8dVWGr 0l/KxWXVrOECcTIC4CYdVCKc99k6jAUrJLk4FCdzt23/cQJiKGkvIArWXzRP5v/89A oKLIWgfTpjR4914qY451DdblO49BBfrHEy5hIsNg= Received: from jhugo-perf-lnx.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: jhugo@smtp.codeaurora.org) by smtp.codeaurora.org (Postfix) with ESMTPSA id D769E60D2D; Thu, 4 Oct 2018 15:20:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1538666432; bh=9u0xT07ld+lLcCLWyAte72i16dsJNMbUZTZQZzOxcTA=; h=From:To:Cc:Subject:Date:From; b=oXSU5dQcrYmkeASDfhyj+Pw90s0f74NBsO2tSBO7ehp3+GfBwzC9f+WXNfHlY72Dd C1m4CTnmlAGbZ2EbQyBbxcQD55yfztExBsGewGb56vQ5sxSSLjABVn07NvRgvHDN0L ThoIMu4VifvWfNE5dr+FCKGCY0csJ6rYFrhIyNHA= DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org D769E60D2D Authentication-Results: pdx-caf-mail.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: pdx-caf-mail.web.codeaurora.org; spf=none smtp.mailfrom=jhugo@codeaurora.org From: Jeffrey Hugo To: sudeep.holla@arm.com, gregkh@linuxfoundation.org, rjw@rjwysocki.net, linux-acpi@vger.kernel.org, jeremy.linton@arm.com Cc: linux-kernel@vger.kernel.org, vkilari@codeaurora.org, Jeffrey Hugo Subject: [PATCH v4 0/2] PPTT handle Handle architecturally unknown cache types Date: Thu, 4 Oct 2018 09:20:04 -0600 Message-Id: <1538666406-7504-1-git-send-email-jhugo@codeaurora.org> X-Mailer: git-send-email 1.9.1 Sender: linux-acpi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The ARM Architecture Reference Manual allows for caches to be "invisible" and thus not specified in the system registers under some scenarios such as if the cache cannot be managed by set/way operations. However, such caches may be specified in the ACPI PPTT table for workload performance/scheduling optimizations. Currently such caches can cause an error in lscpu - lscpu: cannot open /sys/devices/system/cpu/cpu0/cache/index3/type: No such file or directory and result in no output, providing a poor user experience. lstopo is also affected as such caches are not included in the output. Address these issues by attempting to be a little more discerning about when cache information is provided to userspace, and also utilize all sources for cache information when possible. [v4] -Collected all current tags and ammended to individual patches -Removed PPTT_CHECKED_ATTRIBUTES [v3] -removed valid flag in PPTT -Added Jeremy Linton's reviewed-by [v2] -Updated cacheinfo per Sudeep's suggestion -Integrated the PPTT fix into existing PPTT code per Sudeep's suggestion Jeffrey Hugo (2): drivers: base: cacheinfo: Do not populate sysfs for unknown cache types ACPI/PPTT: Handle architecturally unknown cache types drivers/acpi/pptt.c | 15 +++++++++++---- drivers/base/cacheinfo.c | 2 ++ 2 files changed, 13 insertions(+), 4 deletions(-)