From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753866AbbFCVhD (ORCPT ); Wed, 3 Jun 2015 17:37:03 -0400 Received: from mga14.intel.com ([192.55.52.115]:32348 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752072AbbFCVhA (ORCPT ); Wed, 3 Jun 2015 17:37:00 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.13,548,1427785200"; d="scan'208";a="502346818" Subject: [PATCH v3 0/6] pmem api, generic ioremap_cache, and memremap From: Dan Williams To: arnd@arndb.de, mingo@redhat.com, bp@alien8.de, hpa@zytor.com, tglx@linutronix.de, ross.zwisler@linux.intel.com, akpm@linux-foundation.org Cc: jgross@suse.com, x86@kernel.org, toshi.kani@hp.com, linux-nvdimm@ml01.01.org, benh@kernel.crashing.org, mcgrof@suse.com, konrad.wilk@oracle.com, linux-kernel@vger.kernel.org, stefan.bader@canonical.com, luto@amacapital.net, linux-mm@kvack.org, geert@linux-m68k.org, ralf@linux-mips.org, hmh@hmh.eng.br, mpe@ellerman.id.au, tj@kernel.org, paulus@samba.org, hch@lst.de Date: Wed, 03 Jun 2015 17:34:12 -0400 Message-ID: <20150603211948.13749.85816.stgit@dwillia2-desk3.amr.corp.intel.com> User-Agent: StGit/0.17.1-8-g92dd MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The pmem api is responsible for shepherding data out to persistent media. The pmem driver uses this api, when available, to assert that data is durable by the time bio_endio() is invoked. When an architecture or cpu can not make persistence guarantees the driver warns and falls back to "best effort" implementation. Changes since v2 [1]: 1/ Rebased on bp.git/tip-mm-2 (pat cleanups from Boris and ioremap_wt from Toshi). 2/ Fixes for build breakage caught by 0day. 3/ Rework IORESOURCE_CACHEABLE to allow it to be safely used in devm_ioremap_resource(). (Arnd) 4/ Rename pmem apis from persistent_ to _pmem (Boaz) 5/ Introduce the __pmem annotation to let sparse check proper handling of a pointer to pmem. 6/ Unify the ioremap function prototype on: ioremap(resource_size_t offset, unsigned long size) ...across all archs. 7/ Limit the memremap apis to memremap_wt() and memremap_cache(), add ARCH_HAS_MEMREMAP to allow drivers to skip architectures where the return value from ioremap() is not a simple pointer to memory, and catch attempts to memremap addresses that are covered by the kernel's linear mapping. (Arnd) --- Dan Williams (5): arch: unify ioremap prototypes and macro aliases cleanup IORESOURCE_CACHEABLE vs ioremap() arch/*/asm/io.h: add ioremap_cache() to all architectures devm: fix ioremap_cache() usage arch: introduce memremap_cache() and memremap_wt() Ross Zwisler (1): arch, x86: pmem api for ensuring durability of persistent memory updates arch/arc/include/asm/io.h | 1 arch/arm/Kconfig | 1 arch/arm/include/asm/io.h | 2 + arch/arm/mach-clps711x/board-cdb89712.c | 2 - arch/arm64/Kconfig | 1 arch/arm64/include/asm/io.h | 3 + arch/arm64/kernel/efi.c | 4 + arch/arm64/kernel/smp_spin_table.c | 10 ++- arch/avr32/include/asm/io.h | 1 arch/cris/include/asm/io.h | 8 +- arch/cris/mm/ioremap.c | 6 +- arch/frv/Kconfig | 1 arch/frv/include/asm/io.h | 6 ++ arch/ia64/include/asm/io.h | 9 +-- arch/ia64/mm/ioremap.c | 4 + arch/m32r/include/asm/io.h | 1 arch/m68k/Kconfig | 1 arch/m68k/include/asm/io_mm.h | 7 ++ arch/m68k/include/asm/io_no.h | 5 ++ arch/metag/Kconfig | 1 arch/metag/include/asm/io.h | 5 ++ arch/microblaze/include/asm/io.h | 1 arch/mips/Kconfig | 1 arch/mips/include/asm/io.h | 17 ++++- arch/mn10300/include/asm/io.h | 1 arch/nios2/include/asm/io.h | 1 arch/powerpc/Kconfig | 1 arch/powerpc/include/asm/io.h | 2 - arch/powerpc/kernel/pci_of_scan.c | 2 - arch/s390/include/asm/io.h | 1 arch/sparc/include/asm/io_32.h | 1 arch/sparc/include/asm/io_64.h | 9 ++- arch/sparc/kernel/pci.c | 3 - arch/tile/include/asm/io.h | 1 arch/x86/Kconfig | 2 + arch/x86/include/asm/cacheflush.h | 36 +++++++++++ arch/x86/include/asm/io.h | 7 ++ arch/x86/kernel/crash_dump_64.c | 6 +- arch/x86/kernel/kdebugfs.c | 8 +- arch/x86/kernel/ksysfs.c | 28 ++++----- arch/x86/mm/ioremap.c | 12 ++-- arch/xtensa/Kconfig | 1 arch/xtensa/include/asm/io.h | 3 + drivers/acpi/apei/einj.c | 8 +- drivers/acpi/apei/erst.c | 4 + drivers/block/Kconfig | 1 drivers/block/pmem.c | 76 +++++++++++++++++++++-- drivers/firmware/google/memconsole.c | 4 + drivers/pci/probe.c | 3 - drivers/pnp/manager.c | 2 - drivers/scsi/aic94xx/aic94xx_init.c | 7 -- drivers/scsi/arcmsr/arcmsr_hba.c | 5 -- drivers/scsi/mvsas/mv_init.c | 15 +---- drivers/video/fbdev/ocfb.c | 1 include/asm-generic/io.h | 8 ++ include/asm-generic/iomap.h | 4 + include/linux/compiler.h | 2 + include/linux/device.h | 5 ++ include/linux/io.h | 6 ++ include/linux/pmem.h | 102 +++++++++++++++++++++++++++++++ kernel/resource.c | 41 ++++++++++++ lib/Kconfig | 8 ++ lib/devres.c | 48 ++++++--------- lib/pci_iomap.c | 7 +- 64 files changed, 441 insertions(+), 139 deletions(-) create mode 100644 include/linux/pmem.h