From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754604AbaHULA5 (ORCPT ); Thu, 21 Aug 2014 07:00:57 -0400 Received: from fw-tnat.cambridge.arm.com ([217.140.96.21]:54171 "EHLO cam-smtp0.cambridge.arm.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1754572AbaHULAx (ORCPT ); Thu, 21 Aug 2014 07:00:53 -0400 From: Sudeep Holla To: LKML Cc: sudeep.holla@arm.com, Heiko Carstens , Lorenzo Pieralisi , Stephen Boyd , Greg Kroah-Hartman , linux-ia64@vger.kernel.org, linux390@de.ibm.com, linux-s390@vger.kernel.org, x86@kernel.org, linuxppc-dev@lists.ozlabs.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH v3 00/11] drivers: cacheinfo support Date: Thu, 21 Aug 2014 11:59:43 +0100 Message-Id: <1408618794-28497-1-git-send-email-sudeep.holla@arm.com> X-Mailer: git-send-email 1.8.3.2 In-Reply-To: <1406306692-7135-1-git-send-email-sudeep.holla@arm.com> References: <1406306692-7135-1-git-send-email-sudeep.holla@arm.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Sudeep Holla This series adds a generic cacheinfo support similar to topology. The implementation is based on x86 cacheinfo support. Currently x86, powerpc, ia64 and s390 have their own implementations. While adding similar support to ARM and ARM64, here is the attempt to make it generic quite similar to topology info support. It also adds the missing ABI documentation for the cacheinfo sysfs which is already being used. It moves all the existing different implementations on x86, ia64, powerpc and s390 to use the generic cacheinfo infrastructure introduced here. These changes on non-ARM platforms are only compile tested and tested on x86. This series also adds support for ARM and ARM64 architectures based on the generic support. The code can be fetched from: git://linux-arm.org/linux-skn cacheinfo Changes v2->v3: - Added {allocation,write}_policy instead of single attributes sysfs (attributes retained on ia64 privately as it was used only on that) - factored out show_cpumap into separate helper in cpumask.h - populate cpu_{map,list} for non-DT system if they are not populated by arch specific callbacks - removed use of sysfs *_show callback in cache_attrs_is_visible - all the review comments from Stephen Boyd implemented Changes v1->v2: - removed custom device_{add,remove}_attrs, using is_visible callback instead(suggested by GregKH) - arm64: changes as per MarkR review comments - Moved smp_call_function_single to architectures using it(arm, arm64, x86) (suggested by Stephen Boyd) - arm (mostly changes as per RMK's review comments) - fixed to allow v7 + v6 build - l2 cache changes to remove extra structure - populated CTR for few StrongARM CPU's not implementing CTR [v1] https://lkml.org/lkml/2014/6/25/603 [v2] https://lkml.org/lkml/2014/7/25/467 Cc: Greg Kroah-Hartman Cc: linux-ia64@vger.kernel.org Cc: linux390@de.ibm.com Cc: linux-s390@vger.kernel.org Cc: x86@kernel.org Cc: linuxppc-dev@lists.ozlabs.org Cc: linux-arm-kernel@lists.infradead.org Sudeep Holla (11): cpumask: factor out show_cpumap into separate helper function topology: replace custom attribute macros with standard DEVICE_ATTR* drivers: base: add new class "cpu" to group cpu devices drivers: base: support cpu cache information interface to userspace via sysfs ia64: move cacheinfo sysfs to generic cacheinfo infrastructure s390: move cacheinfo sysfs to generic cacheinfo infrastructure x86: move cacheinfo sysfs to generic cacheinfo infrastructure powerpc: move cacheinfo sysfs to generic cacheinfo infrastructure ARM64: kernel: add support for cpu cache information ARM: kernel: add support for cpu cache information ARM: kernel: add outer cache support for cacheinfo implementation Documentation/ABI/testing/sysfs-devices-system-cpu | 47 ++ arch/arm/include/asm/outercache.h | 9 + arch/arm/kernel/Makefile | 1 + arch/arm/kernel/cacheinfo.c | 287 ++++++++ arch/arm/mm/Kconfig | 13 + arch/arm/mm/cache-l2x0.c | 35 +- arch/arm/mm/cache-tauros2.c | 36 + arch/arm/mm/cache-xsc3l2.c | 17 + arch/arm64/kernel/Makefile | 2 +- arch/arm64/kernel/cacheinfo.c | 142 ++++ arch/ia64/kernel/topology.c | 421 +++-------- arch/powerpc/kernel/cacheinfo.c | 812 +++------------------ arch/powerpc/kernel/cacheinfo.h | 8 - arch/powerpc/kernel/sysfs.c | 12 +- arch/s390/kernel/cache.c | 388 +++------- arch/x86/kernel/cpu/intel_cacheinfo.c | 709 +++++------------- arch/x86/kernel/cpu/perf_event_amd_iommu.c | 5 +- arch/x86/kernel/cpu/perf_event_amd_uncore.c | 6 +- arch/x86/kernel/cpu/perf_event_intel_rapl.c | 6 +- arch/x86/kernel/cpu/perf_event_intel_uncore.c | 6 +- drivers/acpi/acpi_pad.c | 6 +- drivers/base/Makefile | 2 +- drivers/base/cacheinfo.c | 543 ++++++++++++++ drivers/base/core.c | 39 +- drivers/base/cpu.c | 12 +- drivers/base/node.c | 14 +- drivers/base/topology.c | 71 +- drivers/pci/pci-sysfs.c | 39 +- include/linux/cacheinfo.h | 100 +++ include/linux/cpu.h | 2 + include/linux/cpumask.h | 27 + 31 files changed, 1826 insertions(+), 1991 deletions(-) create mode 100644 arch/arm/kernel/cacheinfo.c create mode 100644 arch/arm64/kernel/cacheinfo.c delete mode 100644 arch/powerpc/kernel/cacheinfo.h create mode 100644 drivers/base/cacheinfo.c create mode 100644 include/linux/cacheinfo.h -- 1.8.3.2