linux.git/arch/sh/mm, branch master

Replace with globally

2016-12-24T19:46:01+00:00

This was entirely automated, using the script by Al: PATT='^[[:blank:]]*#[[:blank:]]*include[[:blank:]]*' sed -i -e "s!$PATT!#include !" \ $(git grep -l "$PATT"|grep -v ^include/linux/uaccess.h) to do the replacement at the end of the merge window. Requested-by: Al Viro Signed-off-by: Linus Torvalds

mm: replace get_user_pages_unlocked() write/force parameters with gup_flags

2016-10-18T21:13:37+00:00

This removes the 'write' and 'force' use from get_user_pages_unlocked() and replaces them with 'gup_flags' to make the use of FOLL_FORCE explicit in callers as use of this flag can result in surprising behaviour (and hence bugs) within the mm subsystem. Signed-off-by: Lorenzo Stoakes Reviewed-by: Jan Kara Acked-by: Michal Hocko Signed-off-by: Linus Torvalds

Merge tag 'sh-for-4.8' of git://git.libc.org/linux-sh

2016-08-06T13:00:05+00:00

Pull arch/sh updates from Rich Felker: "These changes improve device tree support (including builtin DTB), add support for the J-Core J2 processor, an open source synthesizable reimplementation of the SH-2 ISA, resolve a longstanding sigcontext ABI mismatch issue, and fix various bugs including nommu-specific issues and minor regressions introduced in 4.6. The J-Core arch support is included here but to be usable it needs drivers that are waiting on approval/inclusion from their subsystem maintainers" * tag 'sh-for-4.8' of git://git.libc.org/linux-sh: (23 commits) sh: add device tree source for J2 FPGA on Mimas v2 board sh: add defconfig for J-Core J2 sh: use common clock framework with device tree boards sh: system call wire up sh: Delete unnecessary checks before the function call "mempool_destroy" sh: do not perform IPI-based cache flush except on boards that need it sh: add SMP support for J2 sh: SMP support for SH2 entry.S sh: add working futex atomic ops on userspace addresses for smp sh: add J2 atomics using the cas.l instruction sh: add AT_HWCAP flag for J-Core cas.l instruction sh: add support for J-Core J2 processor sh: fix build regression with CONFIG_OF && !CONFIG_OF_FLATTREE sh: allow clocksource drivers to register sched_clock backends sh: make heartbeat driver explicitly non-modular sh: make board-secureedge5410 explicitly non-modular sh: make mm/asids-debugfs explicitly non-modular sh: make time.c explicitly non-modular sh: fix futex/robust_list on nommu models sh: disable aliased page logic on NOMMU models ...

sh: do not perform IPI-based cache flush except on boards that need it

2016-08-05T03:29:40+00:00

Signed-off-by: Rich Felker

sh: add support for J-Core J2 processor

2016-08-05T03:29:31+00:00

At the CPU/ISA level, the J2 is compatible with SH-2, and thus the changes to add J2 support build on existing SH-2 support. However, J2 does not duplicate the memory-mapped SH-2 features like the cache interface. Instead, the cache interfaces is described in the device tree, and new code is added to be able to access the flat device tree at early boot before it is unflattened. Support is also added for receiving interrupts on trap numbers in the range 16 to 31, since the J-Core aic1 interrupt controller generates these traps. This range was unused but nominally for hardware exceptions on SH-2, and a few values in this range were used for exceptions on SH-2A, but SH-2A has its own version of the relevant code. No individual cpu subtypes are added for J2 since the intent moving forward is to represent SoCs with device tree rather than as hard-coded subtypes in the kernel. The CPU_SUBTYPE_J2 Kconfig item exists only to fit into the existing cpu selection mechanism until it is overhauled. Signed-off-by: Rich Felker

dma-mapping: use unsigned long for dma_attrs

2016-08-04T12:50:07+00:00

The dma-mapping core and the implementations do not change the DMA attributes passed by pointer. Thus the pointer can point to const data. However the attributes do not have to be a bitfield. Instead unsigned long will do fine: 1. This is just simpler. Both in terms of reading the code and setting attributes. Instead of initializing local attributes on the stack and passing pointer to it to dma_set_attr(), just set the bits. 2. It brings safeness and checking for const correctness because the attributes are passed by value. Semantic patches for this change (at least most of them): virtual patch virtual context @r@ identifier f, attrs; @@ f(..., - struct dma_attrs *attrs + unsigned long attrs , ...) { ... } @@ identifier r.f; @@ f(..., - NULL + 0 ) and // Options: --all-includes virtual patch virtual context @r@ identifier f, attrs; type t; @@ t f(..., struct dma_attrs *attrs); @@ identifier r.f; @@ f(..., - NULL + 0 ) Link: http://lkml.kernel.org/r/1468399300-5399-2-git-send-email-k.kozlowski@samsung.com Signed-off-by: Krzysztof Kozlowski Acked-by: Vineet Gupta Acked-by: Robin Murphy Acked-by: Hans-Christian Noren Egtvedt Acked-by: Mark Salter [c6x] Acked-by: Jesper Nilsson [cris] Acked-by: Daniel Vetter [drm] Reviewed-by: Bart Van Assche Acked-by: Joerg Roedel [iommu] Acked-by: Fabien Dessenne [bdisp] Reviewed-by: Marek Szyprowski [vb2-core] Acked-by: David Vrabel [xen] Acked-by: Konrad Rzeszutek Wilk [xen swiotlb] Acked-by: Joerg Roedel [iommu] Acked-by: Richard Kuo [hexagon] Acked-by: Geert Uytterhoeven [m68k] Acked-by: Gerald Schaefer [s390] Acked-by: Bjorn Andersson Acked-by: Hans-Christian Noren Egtvedt [avr32] Acked-by: Vineet Gupta [arc] Acked-by: Robin Murphy [arm64 and dma-iommu] Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

treewide: replace obsolete _refok by __ref

2016-08-02T21:31:41+00:00

There was only one use of __initdata_refok and __exit_refok __init_refok was used 46 times against 82 for __ref. Those definitions are obsolete since commit 312b1485fb50 ("Introduce new section reference annotations tags: __ref, __refdata, __refconst") This patch removes the following compatibility definitions and replaces them treewide. /* compatibility defines */ #define __init_refok __ref #define __initdata_refok __refdata #define __exit_refok __ref I can also provide separate patches if necessary. (One patch per tree and check in 1 month or 2 to remove old definitions) [akpm@linux-foundation.org: coding-style fixes] Link: http://lkml.kernel.org/r/1466796271-3043-1-git-send-email-fabf@skynet.be Signed-off-by: Fabian Frederick Cc: Ingo Molnar Cc: Sam Ravnborg Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

sh: make mm/asids-debugfs explicitly non-modular

2016-07-31T03:33:32+00:00

The Makefile/Kconfig currently controlling compilation of this code is: obj-$(CONFIG_DEBUG_FS) += $(debugfs-y) debugfs-y := asids-debugfs.o lib/Kconfig.debug:config DEBUG_FS lib/Kconfig.debug: bool "Debug Filesystem" ....meaning that it currently is not being built as a module by anyone. Lets remove the couple traces of modular code, so that when reading the driver there is no doubt it is builtin-only. Since module_init translates to device_initcall in the non-modular case, the init ordering remains unchanged with this commit. Cc: Yoshinori Sato Cc: Rich Felker Cc: linux-sh@vger.kernel.org Signed-off-by: Paul Gortmaker Signed-off-by: Rich Felker

sh: disable aliased page logic on NOMMU models

2016-07-31T03:33:32+00:00

SH3/4 (with MMU) have a virtually indexed cache, requiring explicit work to avoid consistency problems arising from having the same physical address range cached in multiple cache lines. This is unneeded for the NOMMU case, and some of the resulting code paths (kmap_coherent) don't work. SH2 only avoided this problem by having a 4-way associative cache with way size equal to the page size (4k), yielding no cache index bits outside of the page offset and thus no aliases. Signed-off-by: Rich Felker

mm: do not pass mm_struct into handle_mm_fault

2016-07-26T23:19:19+00:00

We always have vma->vm_mm around. Link: http://lkml.kernel.org/r/1466021202-61880-8-git-send-email-kirill.shutemov@linux.intel.com Signed-off-by: Kirill A. Shutemov Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds