From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934358AbaGYQoy (ORCPT ); Fri, 25 Jul 2014 12:44:54 -0400 Received: from fw-tnat.cambridge.arm.com ([217.140.96.21]:53950 "EHLO cam-smtp0.cambridge.arm.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1760662AbaGYQov (ORCPT ); Fri, 25 Jul 2014 12:44:51 -0400 From: Sudeep Holla To: LKML Cc: sudeep.holla@arm.com, Heiko Carstens , Lorenzo Pieralisi , 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 Subject: [PATCH v2 0/9] drivers: cacheinfo support Date: Fri, 25 Jul 2014 17:44:43 +0100 Message-Id: <1406306692-7135-1-git-send-email-sudeep.holla@arm.com> X-Mailer: git-send-email 1.8.3.2 In-Reply-To: <1403717444-23559-1-git-send-email-sudeep.holla@arm.com> References: <1403717444-23559-1-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. Since there was no objection to the idea in RFC, I am posting non-RFC version here. The code can be fetched from: git://linux-arm.org/linux-skn cacheinfo 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 Previous RFCs: [1] https://lkml.org/lkml/2014/1/8/523 [2] https://lkml.org/lkml/2014/2/7/654 [3] https://lkml.org/lkml/2014/2/19/391 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 Sudeep Holla (9): 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 | 41 ++ arch/arm/include/asm/outercache.h | 9 + arch/arm/kernel/Makefile | 1 + arch/arm/kernel/cacheinfo.c | 284 +++++++ arch/arm/mm/Kconfig | 13 + arch/arm/mm/cache-l2x0.c | 35 +- arch/arm/mm/cache-tauros2.c | 35 + arch/arm/mm/cache-xsc3l2.c | 16 + arch/arm64/kernel/Makefile | 3 +- arch/arm64/kernel/cacheinfo.c | 142 ++++ arch/ia64/kernel/topology.c | 401 ++-------- arch/powerpc/kernel/cacheinfo.c | 813 +++------------------ 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 | 680 +++++------------ drivers/base/Makefile | 2 +- drivers/base/cacheinfo.c | 539 ++++++++++++++ drivers/base/core.c | 39 +- drivers/base/cpu.c | 7 + include/linux/cacheinfo.h | 73 ++ include/linux/cpu.h | 2 + 22 files changed, 1660 insertions(+), 1883 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