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Author SHA1 Message Date
Mauro Carvalho Chehab d647f0b70c [media] include/media: move driver interface headers to a separate dir 
Let's not mix headers used by the core with those headers that
are needed by some driver-specific interface header.

The headers used on drivers were manually moved using:
    mkdir include/media/drv-intf/
    git mv include/media/cx2341x.h include/media/cx25840.h \
	include/media/exynos-fimc.h include/media/msp3400.h \
	include/media/s3c_camif.h include/media/saa7146.h \
	include/media/saa7146_vv.h  include/media/sh_mobile_ceu.h \
	include/media/sh_mobile_csi2.h include/media/sh_vou.h \
	include/media/si476x.h include/media/soc_mediabus.h \
	include/media/tea575x.h include/media/drv-intf/

And the references for those headers were corrected using:

    MAIN_DIR="media/"
    PREV_DIR="media/"
    DIRS="drv-intf/"

    echo "Checking affected files" >&2
    for i in $DIRS; do
	for j in $(find include/$MAIN_DIR/$i -type f -name '*.h'); do
		 n=`basename $j`
		git grep -l $n
	done
    done|sort|uniq >files && (
	echo "Handling files..." >&2;
	echo "for i in \$(cat files|grep -v Documentation); do cat \$i | \\";
	(
		cd include/$MAIN_DIR;
		for j in $DIRS; do
			for i in $(ls $j); do
				echo "perl -ne 's,(include [\\\"\\<])$PREV_DIR($i)([\\\"\\>]),\1$MAIN_DIR$j\2\3,; print \$_' |\\";
			done;
		done;
		echo "cat > a && mv a \$i; done";
	);
	echo "Handling documentation..." >&2;
	echo "for i in MAINTAINERS \$(cat files); do cat \$i | \\";
	(
		cd include/$MAIN_DIR;
		for j in $DIRS; do
			for i in $(ls $j); do
				echo "  perl -ne 's,include/$PREV_DIR($i)\b,include/$MAIN_DIR$j\1,; print \$_' |\\";
			done;
		done;
		echo "cat > a && mv a \$i; done"
	);
    ) >script && . ./script

Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
 2015-11-17 06:57:29 -02:00
Mauro Carvalho Chehab b5dcee225c [media] include/media: split I2C headers from V4L2 core 
Currently, include/media is messy, as it contains both the V4L2 core
headers and some driver-specific headers on the same place. That makes
harder to identify what core headers should be documented and what
headers belong to I2C drivers that are included only by bridge/main
drivers that would require the functions provided by them.

Let's move those i2c specific files to its own subdirectory.

The files to move were produced via the following script:
	mkdir include/media/i2c
	(cd include/media; for i in *.h; do n=`echo $i|sed s/.h$/.c/`; if [ -e ../../drivers/media/i2c/$n ]; then echo $i; git mv $i i2c/; fi; done)
	(cd include/media; for i in *.h; do n=`echo $i|sed s/.h$/.c/`; if [ -e ../../drivers/media/*/i2c/$n ]; then echo $i; git mv $i i2c/; fi; done)
	for i in include/media/*.h; do n=`basename $i`;  (for j in $(git grep -l $n); do dirname $j; done)|sort|uniq|grep -ve '^.$' > list; num=$(wc -l list|cut -d' ' -f1); if [ $num == 1 ]; then if [ "`grep i2c list`" != "" ]; then git mv $i include/media/i2c; fi; fi; done

And the references corrected via this script:
    MAIN_DIR="media/"
    PREV_DIR="media/"
    DIRS="i2c/"

    echo "Checking affected files" >&2
    for i in $DIRS; do
	for j in $(find include/$MAIN_DIR/$i -type f -name '*.h'); do
		 n=`basename $j`
		git grep -l $n
	done
    done|sort|uniq >files && (
	echo "Handling files..." >&2;
	echo "for i in \$(cat files|grep -v Documentation); do cat \$i | \\";
	(
		cd include/$MAIN_DIR;
		for j in $DIRS; do
			for i in $(ls $j); do
				echo "perl -ne 's,(include [\\\"\\<])$PREV_DIR($i)([\\\"\\>]),\1$MAIN_DIR$j\2\3,; print \$_' |\\";
			done;
		done;
		echo "cat > a && mv a \$i; done";
	);
	echo "Handling documentation..." >&2;
	echo "for i in MAINTAINERS \$(cat files); do cat \$i | \\";
	(
		cd include/$MAIN_DIR;
		for j in $DIRS; do
			for i in $(ls $j); do
				echo "  perl -ne 's,include/$PREV_DIR($i)\b,include/$MAIN_DIR$j\1,; print \$_' |\\";
			done;
		done;
		echo "cat > a && mv a \$i; done"
	);
    ) >script && . ./script

Merged Sakari Ailus patch that moves smiapp.h to include/media/i2c.

Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
 2015-11-17 06:57:11 -02:00
Linus Torvalds ad804a0b2a Merge branch 'akpm' (patches from Andrew) 
Merge second patch-bomb from Andrew Morton:

 - most of the rest of MM

 - procfs

 - lib/ updates

 - printk updates

 - bitops infrastructure tweaks

 - checkpatch updates

 - nilfs2 update

 - signals

 - various other misc bits: coredump, seqfile, kexec, pidns, zlib, ipc,
   dma-debug, dma-mapping, ...

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (102 commits)
  ipc,msg: drop dst nil validation in copy_msg
  include/linux/zutil.h: fix usage example of zlib_adler32()
  panic: release stale console lock to always get the logbuf printed out
  dma-debug: check nents in dma_sync_sg*
  dma-mapping: tidy up dma_parms default handling
  pidns: fix set/getpriority and ioprio_set/get in PRIO_USER mode
  kexec: use file name as the output message prefix
  fs, seqfile: always allow oom killer
  seq_file: reuse string_escape_str()
  fs/seq_file: use seq_* helpers in seq_hex_dump()
  coredump: change zap_threads() and zap_process() to use for_each_thread()
  coredump: ensure all coredumping tasks have SIGNAL_GROUP_COREDUMP
  signal: remove jffs2_garbage_collect_thread()->allow_signal(SIGCONT)
  signal: introduce kernel_signal_stop() to fix jffs2_garbage_collect_thread()
  signal: turn dequeue_signal_lock() into kernel_dequeue_signal()
  signals: kill block_all_signals() and unblock_all_signals()
  nilfs2: fix gcc uninitialized-variable warnings in powerpc build
  nilfs2: fix gcc unused-but-set-variable warnings
  MAINTAINERS: nilfs2: add header file for tracing
  nilfs2: add tracepoints for analyzing reading and writing metadata files
  ...
 2015-11-07 14:32:45 -08:00
Martin Kepplinger 06d8f8178c arch/sh/kernel/traps_64.c: use sign_extend64() for sign extension 
Signed-off-by: Martin Kepplinger <martin.kepplinger@theobroma-systems.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: George Spelvin <linux@horizon.com>
Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Cc: Maxime Coquelin <maxime.coquelin@st.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Yury Norov <yury.norov@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2015-11-06 17:50:42 -08:00
Linus Torvalds 02f0d3f758 MTD updates for 4.4-rc1: 
Core
 
   * WARN (in some cases) when a struct mtd_info is registered multiple times;
     in the past this was "supported", but it's still error prone for future
     development. There's only one ugly case of this left in the tree (that
     we're aware of) and the owners are aware of the problems there.
 
   * fix potential deadlock in the blkdev removal path
     NOTE: the (potential) deadlock was introduced in a for-stable patch. This
     one is also marked for -stable.
 
   * ioctl(BLKPG) compat_ioctl support; resolves issues with 32-bit user space
     vs. 64-bit kernel space
 
   * Set MTD parent device correctly throughout the tree, so the tree structure
     appears correctly in sysfs; many drivers were missing this (soft)
     requirement
 
   * Move device tree partitions (ofpart) into a dedicated 'partitions' subnode;
     this helps to disambiguate whether a node is a partition or some other
     auxiliary data
 
   * Improve error handling for partitioning failures
 
  NAND
 
   * General: Increase timeout period, for corner-case systems with
     less-than-accurate jiffies
 
   * Fix OF-based autoloading of several NAND drivers when built as modules
 
   * pxa3xx_nand:
     - Rework timing configuration to be more dynamic
     - Refactor PM support
 
   * brcmnand: prepare for NorthStar 2 support (ARM64, 16-bit NAND chips)
 
   * sunxi_nand: refactoring and a few bug fixes
 
   * vf610: new NAND driver
 
   * FSMC: add SW BCH support; support common NAND DT bindings
 
   * lpc32xx_slc: refactor and improve timing calculations logic
 
   * denali: support for rev 5.1
 
  SPI NOR
 
   * Layering improvements
 
   * Added Winbond lock/unlock support
 
   * Added mtd_is_locked() (i.e., ioctl(MEMISLOCKED)) support
 
   * Increase full-chip-erase timeout linearly with flash size
 
   * fsl-quadspi: fix compile for non-ARM architectures
 
   * New flash support
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Merge tag 'for-linus-20151106' of git://git.infradead.org/linux-mtd

Pull MTD updates from Brian Norris:
 "Core:

   - WARN (in some cases) when a struct mtd_info is registered multiple
     times; in the past this was "supported", but it's still error prone
     for future development.  There's only one ugly case of this left in
     the tree (that we're aware of) and the owners are aware of the
     problems there.

   - fix potential deadlock in the blkdev removal path NOTE: the
     (potential) deadlock was introduced in a for-stable patch.  This
     one is also marked for -stable.

   - ioctl(BLKPG) compat_ioctl support; resolves issues with 32-bit user
     space vs 64-bit kernel space

   - Set MTD parent device correctly throughout the tree, so the tree
     structure appears correctly in sysfs; many drivers were missing
     this (soft) requirement

   - Move device tree partitions (ofpart) into a dedicated 'partitions'
     subnode; this helps to disambiguate whether a node is a partition
     or some other auxiliary data

   - Improve error handling for partitioning failures

  NAND:

   - General: Increase timeout period, for corner-case systems with
     less-than-accurate jiffies

   - Fix OF-based autoloading of several NAND drivers when built as
     modules

   - pxa3xx_nand:
      - Rework timing configuration to be more dynamic
      - Refactor PM support

   - brcmnand: prepare for NorthStar 2 support (ARM64, 16-bit NAND
     chips)

   - sunxi_nand: refactoring and a few bug fixes

   - vf610: new NAND driver

   - FSMC: add SW BCH support; support common NAND DT bindings

   - lpc32xx_slc: refactor and improve timing calculations logic

   - denali: support for rev 5.1

  SPI NOR:

   - Layering improvements

   - Added Winbond lock/unlock support

   - Added mtd_is_locked() (i.e., ioctl(MEMISLOCKED)) support

   - Increase full-chip-erase timeout linearly with flash size

   - fsl-quadspi: fix compile for non-ARM architectures

   - New flash support"

* tag 'for-linus-20151106' of git://git.infradead.org/linux-mtd: (169 commits)
  mtd: don't WARN about overloaded users of mtd->reboot_notifier.notifier_call
  mtd: nand: sunxi: avoid retrieving data before ECC pass
  mtd: nand: sunxi: fix sunxi_nfc_hw_ecc_read/write_chunk()
  mtd: blkdevs: fix potential deadlock + lockdep warnings
  mtd: ofpart: move ofpart partitions to a dedicated dt node
  doc: dt: mtd: support partitions in a special 'partitions' subnode
  mtd: brcmnand: Force 8bit mode before doing nand_scan_ident()
  mtd: brcmnand: factor out CFG and CFG_EXT bitfields
  mtd: mtdpart: Do not fail mtd probe when parsing partitions fails
  mtd: fsl-quadspi: fix macro collision problems with READ/WRITE
  mtd: warn when registering the same master many times
  mtd: fixup corner case error handling in mtd_device_parse_register()
  mtd: tests: Replace timeval with ktime_t
  mtd: fsmc_nand: Add BCH4 SW ECC support for SPEAr600
  mtd: nand: vf610_nfc: use nand_check_erased_ecc_chunk() helper
  mtd: nand: increase ready wait timeout and report timeouts
  mtd: docg3: off by one in doc_register_sysfs()
  mtd: pxa3xx_nand: clean up the pxa3xx timings
  mtd: pxa3xx_nand: rework flash detection and timing setup
  mtd: pxa3xx_nand: add helpers to setup the timings
  ...
 2015-11-06 11:50:24 -08:00
Ingo Molnar a1a2ab2ff7 Linux 4.3-rc6 
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Merge tag 'v4.3-rc6' into locking/core, to pick up fixes before applying new changes

Signed-off-by: Ingo Molnar <mingo@kernel.org>
 2015-10-20 10:16:46 +02:00
Ross Zwisler 934ed25ea5 sh: add copy_user_page() alias for __copy_user() 
copy_user_page() is needed by DAX.  Without this we get a compile error
for DAX on SH:

  fs/dax.c:280:2: error: implicit declaration of function `copy_user_page' [-Werror=implicit-function-declaration]
    copy_user_page(vto, (void __force *)vfrom, vaddr, to);
      ^

This was done with a random config that happened to include DAX support.

This patch has only been compile tested.

Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Matthew Wilcox <willy@linux.intel.com>
Cc: Matt Fleming <matt@codeblueprint.co.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2015-10-16 11:42:28 -07:00
Brian Norris 99a3b15572 sh: mach-rsk: remove unnecessary MTD partition probe specification 
The cmdlinepart parser is already supported in the default probe.

Signed-off-by: Brian Norris <computersforpeace@gmail.com>
 2015-09-30 13:51:35 -07:00
Peter Zijlstra 62e8a3258b atomic, arch: Audit atomic_{read,set}() 
This patch makes sure that atomic_{read,set}() are at least
{READ,WRITE}_ONCE().

We already had the 'requirement' that atomic_read() should use
ACCESS_ONCE(), and most archs had this, but a few were lacking.
All are now converted to use READ_ONCE().

And, by a symmetry and general paranoia argument, upgrade atomic_set()
to use WRITE_ONCE().

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: james.hogan@imgtec.com
Cc: linux-kernel@vger.kernel.org
Cc: oleg@redhat.com
Cc: will.deacon@arm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
 2015-09-23 09:54:28 +02:00
Thomas Gleixner bd0b9ac405 genirq: Remove irq argument from irq flow handlers 
Most interrupt flow handlers do not use the irq argument. Those few
which use it can retrieve the irq number from the irq descriptor.

Remove the argument.

Search and replace was done with coccinelle and some extra helper
scripts around it. Thanks to Julia for her help!

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Julia Lawall <Julia.Lawall@lip6.fr>
Cc: Jiang Liu <jiang.liu@linux.intel.com>
 2015-09-16 15:47:51 +02:00
Christoph Hellwig 452e06af1f dma-mapping: consolidate dma_set_mask 
Almost everyone implements dma_set_mask the same way, although some time
that's hidden in ->set_dma_mask methods.

This patch consolidates those into a common implementation that either
calls ->set_dma_mask if present or otherwise uses the default
implementation.  Some architectures used to only call ->set_dma_mask
after the initial checks, and those instance have been fixed to do the
full work.  h8300 implemented dma_set_mask bogusly as a no-ops and has
been fixed.

Unfortunately some architectures overload unrelated semantics like changing
the dma_ops into it so we still need to allow for an architecture override
for now.

[jcmvbkbc@gmail.com: fix xtensa]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Jonas Bonn <jonas@southpole.se>
Cc: Chris Metcalf <cmetcalf@ezchip.com>
Cc: Guan Xuetao <gxt@mprc.pku.edu.cn>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2015-09-10 13:29:01 -07:00
Christoph Hellwig ee196371d5 dma-mapping: consolidate dma_supported 
Most architectures just call into ->dma_supported, but some also return 1
if the method is not present, or 0 if no dma ops are present (although
that should never happeb). Consolidate this more broad version into
common code.

Also fix h8300 which inorrectly always returned 0, which would have been
a problem if it's dma_set_mask implementation wasn't a similarly buggy
noop.

As a few architectures have much more elaborate implementations, we
still allow for arch overrides.

[jcmvbkbc@gmail.com: fix xtensa]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Jonas Bonn <jonas@southpole.se>
Cc: Chris Metcalf <cmetcalf@ezchip.com>
Cc: Guan Xuetao <gxt@mprc.pku.edu.cn>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2015-09-10 13:29:01 -07:00
Christoph Hellwig efa21e432c dma-mapping: cosolidate dma_mapping_error 
Currently there are three valid implementations of dma_mapping_error:

 (1) call ->mapping_error
 (2) check for a hardcoded error code
 (3) always return 0

This patch provides a common implementation that calls ->mapping_error
if present, then checks for DMA_ERROR_CODE if defined or otherwise
returns 0.

[jcmvbkbc@gmail.com: fix xtensa]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Jonas Bonn <jonas@southpole.se>
Cc: Chris Metcalf <cmetcalf@ezchip.com>
Cc: Guan Xuetao <gxt@mprc.pku.edu.cn>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2015-09-10 13:29:01 -07:00
Christoph Hellwig 1e8937526e dma-mapping: consolidate dma_{alloc,free}_noncoherent 
Most architectures do not support non-coherent allocations and either
define dma_{alloc,free}_noncoherent to their coherent versions or stub
them out.

Openrisc uses dma_{alloc,free}_attrs to implement them, and only Mips
implements them directly.

This patch moves the Openrisc version to common code, and handles the
DMA_ATTR_NON_CONSISTENT case in the mips dma_map_ops instance.

Note that actual non-coherent allocations require a dma_cache_sync
implementation, so if non-coherent allocations didn't work on
an architecture before this patch they still won't work after it.

[jcmvbkbc@gmail.com: fix xtensa]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Jonas Bonn <jonas@southpole.se>
Cc: Chris Metcalf <cmetcalf@ezchip.com>
Cc: Guan Xuetao <gxt@mprc.pku.edu.cn>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2015-09-10 13:29:01 -07:00
Christoph Hellwig 6894258eda dma-mapping: consolidate dma_{alloc,free}_{attrs,coherent} 
Since 2009 we have a nice asm-generic header implementing lots of DMA API
functions for architectures using struct dma_map_ops, but unfortunately
it's still missing a lot of APIs that all architectures still have to
duplicate.

This series consolidates the remaining functions, although we still need
arch opt outs for two of them as a few architectures have very
non-standard implementations.

This patch (of 5):

The coherent DMA allocator works the same over all architectures supporting
dma_map operations.

This patch consolidates them and converges the minor differences:

 - the debug_dma helpers are now called from all architectures, including
   those that were previously missing them
 - dma_alloc_from_coherent and dma_release_from_coherent are now always
   called from the generic alloc/free routines instead of the ops
   dma-mapping-common.h always includes dma-coherent.h to get the defintions
   for them, or the stubs if the architecture doesn't support this feature
 - checks for ->alloc / ->free presence are removed.  There is only one
   magic instead of dma_map_ops without them (mic_dma_ops) and that one
   is x86 only anyway.

Besides that only x86 needs special treatment to replace a default devices
if none is passed and tweak the gfp_flags.  An optional arch hook is provided
for that.

[linux@roeck-us.net: fix build]
[jcmvbkbc@gmail.com: fix xtensa]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Jonas Bonn <jonas@southpole.se>
Cc: Chris Metcalf <cmetcalf@ezchip.com>
Cc: Guan Xuetao <gxt@mprc.pku.edu.cn>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2015-09-10 13:29:01 -07:00
Yinghai Lu 2d3862d26e lib/decompressors: use real out buf size for gunzip with kernel 
When loading x86 64bit kernel above 4GiB with patched grub2, got kernel
gunzip error.

| early console in decompress_kernel
| decompress_kernel:
|       input: [0x807f2143b4-0x807ff61aee]
|      output: [0x807cc00000-0x807f3ea29b] 0x027ea29c: output_len
| boot via startup_64
| KASLR using RDTSC...
|  new output: [0x46fe000000-0x470138cfff] 0x0338d000: output_run_size
|  decompress: [0x46fe000000-0x47007ea29b] <=== [0x807f2143b4-0x807ff61aee]
|
| Decompressing Linux... gz...
|
| uncompression error
|
| -- System halted

the new buffer is at 0x46fe000000ULL, decompressor_gzip is using
0xffffffb901ffffff as out_len.  gunzip in lib/zlib_inflate/inflate.c cap
that len to 0x01ffffff and decompress fails later.

We could hit this problem with crashkernel booting that uses kexec loading
kernel above 4GiB.

We have decompress_* support:
    1. inbuf[]/outbuf[] for kernel preboot.
    2. inbuf[]/flush() for initramfs
    3. fill()/flush() for initrd.
This bug only affect kernel preboot path that use outbuf[].

Add __decompress and take real out_buf_len for gunzip instead of guessing
wrong buf size.

Fixes: 1431574a1c (lib/decompressors: fix "no limit" output buffer length)
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Cc: Alexandre Courbot <acourbot@nvidia.com>
Cc: Jon Medhurst <tixy@linaro.org>
Cc: Stephen Warren <swarren@wwwdotorg.org>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2015-09-10 13:29:01 -07:00
Dave Young 2965faa5e0 kexec: split kexec_load syscall from kexec core code 
There are two kexec load syscalls, kexec_load another and kexec_file_load.
 kexec_file_load has been splited as kernel/kexec_file.c.  In this patch I
split kexec_load syscall code to kernel/kexec.c.

And add a new kconfig option KEXEC_CORE, so we can disable kexec_load and
use kexec_file_load only, or vice verse.

The original requirement is from Ted Ts'o, he want kexec kernel signature
being checked with CONFIG_KEXEC_VERIFY_SIG enabled.  But kexec-tools use
kexec_load syscall can bypass the checking.

Vivek Goyal proposed to create a common kconfig option so user can compile
in only one syscall for loading kexec kernel.  KEXEC/KEXEC_FILE selects
KEXEC_CORE so that old config files still work.

Because there's general code need CONFIG_KEXEC_CORE, so I updated all the
architecture Kconfig with a new option KEXEC_CORE, and let KEXEC selects
KEXEC_CORE in arch Kconfig.  Also updated general kernel code with to
kexec_load syscall.

[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Dave Young <dyoung@redhat.com>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: Petr Tesarik <ptesarik@suse.cz>
Cc: Theodore Ts'o <tytso@mit.edu>
Cc: Josh Boyer <jwboyer@fedoraproject.org>
Cc: David Howells <dhowells@redhat.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2015-09-10 13:29:01 -07:00
Linus Torvalds 12f03ee606 libnvdimm for 4.3: 
1/ Introduce ZONE_DEVICE and devm_memremap_pages() as a generic
    mechanism for adding device-driver-discovered memory regions to the
    kernel's direct map.  This facility is used by the pmem driver to
    enable pfn_to_page() operations on the page frames returned by DAX
    ('direct_access' in 'struct block_device_operations'). For now, the
    'memmap' allocation for these "device" pages comes from "System
    RAM".  Support for allocating the memmap from device memory will
    arrive in a later kernel.
 
 2/ Introduce memremap() to replace usages of ioremap_cache() and
    ioremap_wt().  memremap() drops the __iomem annotation for these
    mappings to memory that do not have i/o side effects.  The
    replacement of ioremap_cache() with memremap() is limited to the
    pmem driver to ease merging the api change in v4.3.  Completion of
    the conversion is targeted for v4.4.
 
 3/ Similar to the usage of memcpy_to_pmem() + wmb_pmem() in the pmem
    driver, update the VFS DAX implementation and PMEM api to provide
    persistence guarantees for kernel operations on a DAX mapping.
 
 4/ Convert the ACPI NFIT 'BLK' driver to map the block apertures as
    cacheable to improve performance.
 
 5/ Miscellaneous updates and fixes to libnvdimm including support
    for issuing "address range scrub" commands, clarifying the optimal
    'sector size' of pmem devices, a clarification of the usage of the
    ACPI '_STA' (status) property for DIMM devices, and other minor
    fixes.
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Merge tag 'libnvdimm-for-4.3' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm

Pull libnvdimm updates from Dan Williams:
 "This update has successfully completed a 0day-kbuild run and has
  appeared in a linux-next release.  The changes outside of the typical
  drivers/nvdimm/ and drivers/acpi/nfit.[ch] paths are related to the
  removal of IORESOURCE_CACHEABLE, the introduction of memremap(), and
  the introduction of ZONE_DEVICE + devm_memremap_pages().

  Summary:

   - Introduce ZONE_DEVICE and devm_memremap_pages() as a generic
     mechanism for adding device-driver-discovered memory regions to the
     kernel's direct map.

     This facility is used by the pmem driver to enable pfn_to_page()
     operations on the page frames returned by DAX ('direct_access' in
     'struct block_device_operations').

     For now, the 'memmap' allocation for these "device" pages comes
     from "System RAM".  Support for allocating the memmap from device
     memory will arrive in a later kernel.

   - Introduce memremap() to replace usages of ioremap_cache() and
     ioremap_wt().  memremap() drops the __iomem annotation for these
     mappings to memory that do not have i/o side effects.  The
     replacement of ioremap_cache() with memremap() is limited to the
     pmem driver to ease merging the api change in v4.3.

     Completion of the conversion is targeted for v4.4.

   - Similar to the usage of memcpy_to_pmem() + wmb_pmem() in the pmem
     driver, update the VFS DAX implementation and PMEM api to provide
     persistence guarantees for kernel operations on a DAX mapping.

   - Convert the ACPI NFIT 'BLK' driver to map the block apertures as
     cacheable to improve performance.

   - Miscellaneous updates and fixes to libnvdimm including support for
     issuing "address range scrub" commands, clarifying the optimal
     'sector size' of pmem devices, a clarification of the usage of the
     ACPI '_STA' (status) property for DIMM devices, and other minor
     fixes"

* tag 'libnvdimm-for-4.3' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: (34 commits)
  libnvdimm, pmem: direct map legacy pmem by default
  libnvdimm, pmem: 'struct page' for pmem
  libnvdimm, pfn: 'struct page' provider infrastructure
  x86, pmem: clarify that ARCH_HAS_PMEM_API implies PMEM mapped WB
  add devm_memremap_pages
  mm: ZONE_DEVICE for "device memory"
  mm: move __phys_to_pfn and __pfn_to_phys to asm/generic/memory_model.h
  dax: drop size parameter to ->direct_access()
  nd_blk: change aperture mapping from WC to WB
  nvdimm: change to use generic kvfree()
  pmem, dax: have direct_access use __pmem annotation
  dax: update I/O path to do proper PMEM flushing
  pmem: add copy_from_iter_pmem() and clear_pmem()
  pmem, x86: clean up conditional pmem includes
  pmem: remove layer when calling arch_has_wmb_pmem()
  pmem, x86: move x86 PMEM API to new pmem.h header
  libnvdimm, e820: make CONFIG_X86_PMEM_LEGACY a tristate option
  pmem: switch to devm_ allocations
  devres: add devm_memremap
  libnvdimm, btt: write and validate parent_uuid
  ...
 2015-09-08 14:35:59 -07:00
Linus Torvalds 59a47fff02 Mostly this is just clean ups and micro optimizations. 
The changes with more meat are:
 
  o Allowing the trace event filters to filter on CPU number and process ids
 
  o Two new markers for trace output latency were added
     (10 and 100 msec latencies)
 
  o Have tracing_thresh filter function profiling time
 
 I also worked on modifying the ring buffer code for some future
 work, and moved the adding of the timestamp around. One of my changes
 caused a regression, and since other changes were built on top of it
 and already tested, I had to operate a revert of that change. Instead
 of rebasing, this change set has the code that caused a regression
 as well as the code to revert that change without touching the other
 changes that were made on top of it.
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Merge tag 'trace-v4.3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

Pull tracing update from Steven Rostedt:
 "Mostly this is just clean ups and micro optimizations.

  The changes with more meat are:

   - Allowing the trace event filters to filter on CPU number and
     process ids

   - Two new markers for trace output latency were added (10 and 100
     msec latencies)

   - Have tracing_thresh filter function profiling time

  I also worked on modifying the ring buffer code for some future work,
  and moved the adding of the timestamp around.  One of my changes
  caused a regression, and since other changes were built on top of it
  and already tested, I had to operate a revert of that change.  Instead
  of rebasing, this change set has the code that caused a regression as
  well as the code to revert that change without touching the other
  changes that were made on top of it"

* tag 'trace-v4.3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  ring-buffer: Revert "ring-buffer: Get timestamp after event is allocated"
  tracing: Don't make assumptions about length of string on task rename
  tracing: Allow triggers to filter for CPU ids and process names
  ftrace: Format MCOUNT_ADDR address as type unsigned long
  tracing: Introduce two additional marks for delay
  ftrace: Fix function_graph duration spacing with 7-digits
  ftrace: add tracing_thresh to function profile
  tracing: Clean up stack tracing and fix fentry updates
  ring-buffer: Reorganize function locations
  ring-buffer: Make sure event has enough room for extend and padding
  ring-buffer: Get timestamp after event is allocated
  ring-buffer: Move the adding of the extended timestamp out of line
  ring-buffer: Add event descriptor to simplify passing data
  ftrace: correct the counter increment for trace_buffer data
  tracing: Fix for non-continuous cpu ids
  tracing: Prefer kcalloc over kzalloc with multiply
 2015-09-08 14:04:14 -07:00
Linus Torvalds 9cfcc658da media updates for v4.3-rc1 
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Merge tag 'media/v4.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media

Pull media updates from Mauro Carvalho Chehab:
 - new DVB frontend drivers: ascot2e, cxd2841er, horus3a, lnbh25
 - new HDMI capture driver: tc358743
 - new driver for NetUP DVB new boards (netup_unidvb)
 - IR support for DVBSky cards (smipcie-ir)
 - Coda driver has gain macroblock tiling support
 - Renesas R-Car gains JPEG codec driver
 - new DVB platform driver for STi boards: c8sectpfe
 - added documentation for the media core kABI to device-drivers DocBook
 - lots of driver fixups, cleanups and improvements

* tag 'media/v4.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (297 commits)
  [media] c8sectpfe: Remove select on undefined LIBELF_32
  [media] i2c: fix platform_no_drv_owner.cocci warnings
  [media] cx231xx: Use wake_up_interruptible() instead of wake_up_interruptible_nr()
  [media] tc358743: only queue subdev notifications if devnode is set
  [media] tc358743: add missing Kconfig dependency/select
  [media] c8sectpfe: Use %pad to print 'dma_addr_t'
  [media] DocBook media: Fix typo "the the" in xml files
  [media] tc358743: make reset gpio optional
  [media] tc358743: set direction of reset gpio using devm_gpiod_get
  [media] dvbdev: document most of the functions/data structs
  [media] dvb_frontend.h: document the struct dvb_frontend
  [media] dvb-frontend.h: document struct dtv_frontend_properties
  [media] dvb-frontend.h: document struct dvb_frontend_ops
  [media] dvb: Use DVBFE_ALGO_HW where applicable
  [media] dvb_frontend.h: document struct analog_demod_ops
  [media] dvb_frontend.h: Document struct dvb_tuner_ops
  [media] Docbook: Document struct analog_parameters
  [media] dvb_frontend.h: get rid of dvbfe_modcod
  [media] add documentation for struct dvb_tuner_info
  [media] dvb_frontend: document dvb_frontend_tune_settings
  ...
 2015-09-05 18:21:14 -07:00
Alexander Kuleshov 81cf09edc7 sh: use PFN_DOWN macro 
Replace ((x) >> PAGE_SHIFT) with the predefined PFN_DOWN macro.

Signed-off-by: Alexander Kuleshov <kuleshovmail@gmail.com>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2015-09-04 16:54:41 -07:00
Linus Torvalds ca520cab25 Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 
Pull locking and atomic updates from Ingo Molnar:
 "Main changes in this cycle are:

   - Extend atomic primitives with coherent logic op primitives
     (atomic_{or,and,xor}()) and deprecate the old partial APIs
     (atomic_{set,clear}_mask())

     The old ops were incoherent with incompatible signatures across
     architectures and with incomplete support.  Now every architecture
     supports the primitives consistently (by Peter Zijlstra)

   - Generic support for 'relaxed atomics':

       - _acquire/release/relaxed() flavours of xchg(), cmpxchg() and {add,sub}_return()
       - atomic_read_acquire()
       - atomic_set_release()

     This came out of porting qwrlock code to arm64 (by Will Deacon)

   - Clean up the fragile static_key APIs that were causing repeat bugs,
     by introducing a new one:

       DEFINE_STATIC_KEY_TRUE(name);
       DEFINE_STATIC_KEY_FALSE(name);

     which define a key of different types with an initial true/false
     value.

     Then allow:

       static_branch_likely()
       static_branch_unlikely()

     to take a key of either type and emit the right instruction for the
     case.  To be able to know the 'type' of the static key we encode it
     in the jump entry (by Peter Zijlstra)

   - Static key self-tests (by Jason Baron)

   - qrwlock optimizations (by Waiman Long)

   - small futex enhancements (by Davidlohr Bueso)

   - ... and misc other changes"

* 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (63 commits)
  jump_label/x86: Work around asm build bug on older/backported GCCs
  locking, ARM, atomics: Define our SMP atomics in terms of _relaxed() operations
  locking, include/llist: Use linux/atomic.h instead of asm/cmpxchg.h
  locking/qrwlock: Make use of _{acquire|release|relaxed}() atomics
  locking/qrwlock: Implement queue_write_unlock() using smp_store_release()
  locking/lockref: Remove homebrew cmpxchg64_relaxed() macro definition
  locking, asm-generic: Add _{relaxed|acquire|release}() variants for 'atomic_long_t'
  locking, asm-generic: Rework atomic-long.h to avoid bulk code duplication
  locking/atomics: Add _{acquire|release|relaxed}() variants of some atomic operations
  locking, compiler.h: Cast away attributes in the WRITE_ONCE() magic
  locking/static_keys: Make verify_keys() static
  jump label, locking/static_keys: Update docs
  locking/static_keys: Provide a selftest
  jump_label: Provide a self-test
  s390/uaccess, locking/static_keys: employ static_branch_likely()
  x86, tsc, locking/static_keys: Employ static_branch_likely()
  locking/static_keys: Add selftest
  locking/static_keys: Add a new static_key interface
  locking/static_keys: Rework update logic
  locking/static_keys: Add static_key_{en,dis}able() helpers
  ...
 2015-09-03 15:46:07 -07:00
Linus Torvalds 17e6b00ac4 Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 
Pull irq updates from Thomas Gleixner:
 "This updated pull request does not contain the last few GIC related
  patches which were reported to cause a regression.  There is a fix
  available, but I let it breed for a couple of days first.

  The irq departement provides:

   - new infrastructure to support non PCI based MSI interrupts
   - a couple of new irq chip drivers
   - the usual pile of fixlets and updates to irq chip drivers
   - preparatory changes for removal of the irq argument from interrupt
     flow handlers
   - preparatory changes to remove IRQF_VALID"

* 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (129 commits)
  irqchip/imx-gpcv2: IMX GPCv2 driver for wakeup sources
  irqchip: Add bcm2836 interrupt controller for Raspberry Pi 2
  irqchip: Add documentation for the bcm2836 interrupt controller
  irqchip/bcm2835: Add support for being used as a second level controller
  irqchip/bcm2835: Refactor handle_IRQ() calls out of MAKE_HWIRQ
  PCI: xilinx: Fix typo in function name
  irqchip/gic: Ensure gic_cpu_if_up/down() programs correct GIC instance
  irqchip/gic: Only allow the primary GIC to set the CPU map
  PCI/MSI: pci-xgene-msi: Consolidate chained IRQ handler install/remove
  unicore32/irq: Prepare puv3_gpio_handler for irq argument removal
  tile/pci_gx: Prepare trio_handle_level_irq for irq argument removal
  m68k/irq: Prepare irq handlers for irq argument removal
  C6X/megamode-pic: Prepare megamod_irq_cascade for irq argument removal
  blackfin: Prepare irq handlers for irq argument removal
  arc/irq: Prepare idu_cascade_isr for irq argument removal
  sparc/irq: Use access helper irq_data_get_affinity_mask()
  sparc/irq: Use helper irq_data_get_irq_handler_data()
  parisc/irq: Use access helper irq_data_get_affinity_mask()
  mn10300/irq: Use access helper irq_data_get_affinity_mask()
  irqchip/i8259: Prepare i8259_irq_dispatch for irq argument removal
  ...
 2015-09-01 14:33:35 -07:00
Linus Torvalds 5e359bf221 Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 
Pull timer updates from Thomas Gleixner:
 "Rather large, but nothing exiting:

   - new range check for settimeofday() to prevent that boot time
     becomes negative.
   - fix for file time rounding
   - a few simplifications of the hrtimer code
   - fix for the proc/timerlist code so the output of clock realtime
     timers is accurate
   - more y2038 work
   - tree wide conversion of clockevent drivers to the new callbacks"

* 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (88 commits)
  hrtimer: Handle failure of tick_init_highres() gracefully
  hrtimer: Unconfuse switch_hrtimer_base() a bit
  hrtimer: Simplify get_target_base() by returning current base
  hrtimer: Drop return code of hrtimer_switch_to_hres()
  time: Introduce timespec64_to_jiffies()/jiffies_to_timespec64()
  time: Introduce current_kernel_time64()
  time: Introduce struct itimerspec64
  time: Add the common weak version of update_persistent_clock()
  time: Always make sure wall_to_monotonic isn't positive
  time: Fix nanosecond file time rounding in timespec_trunc()
  timer_list: Add the base offset so remaining nsecs are accurate for non monotonic timers
  cris/time: Migrate to new 'set-state' interface
  kernel: broadcast-hrtimer: Migrate to new 'set-state' interface
  xtensa/time: Migrate to new 'set-state' interface
  unicore/time: Migrate to new 'set-state' interface
  um/time: Migrate to new 'set-state' interface
  sparc/time: Migrate to new 'set-state' interface
  sh/localtimer: Migrate to new 'set-state' interface
  score/time: Migrate to new 'set-state' interface
  s390/time: Migrate to new 'set-state' interface
  ...
 2015-09-01 14:04:50 -07:00
Linus Torvalds 25525bea46 Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 
Pull x86 mm updates from Ingo Molnar:
 "The dominant change in this cycle was the continued work to isolate
  kernel drivers from MTRR legacies: this tree gets rid of all kernel
  internal driver interfaces to MTRRs (mostly by rewriting it to proper
  PAT interfaces), the only access left is the /proc/mtrr ABI.

  This work was done by Luis R Rodriguez.

  There's also some related PCI interface additions for which I've
  Cc:-ed Bjorn"

* 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (21 commits)
  x86/mm/mtrr: Remove kernel internal MTRR interfaces: unexport mtrr_add() and mtrr_del()
  s390/io: Add pci_iomap_wc() and pci_iomap_wc_range()
  drivers/dma/iop-adma: Use dma_alloc_writecombine() kernel-style
  drivers/video/fbdev/vt8623fb: Use arch_phys_wc_add() and pci_iomap_wc()
  drivers/video/fbdev/s3fb: Use arch_phys_wc_add() and pci_iomap_wc()
  drivers/video/fbdev/arkfb.c: Use arch_phys_wc_add() and pci_iomap_wc()
  PCI: Add pci_iomap_wc() variants
  drivers/video/fbdev/gxt4500: Use pci_ioremap_wc_bar() to map framebuffer
  drivers/video/fbdev/kyrofb: Use arch_phys_wc_add() and pci_ioremap_wc_bar()
  drivers/video/fbdev/i740fb: Use arch_phys_wc_add() and pci_ioremap_wc_bar()
  PCI: Add pci_ioremap_wc_bar()
  x86/mm: Make kernel/check.c explicitly non-modular
  x86/mm/pat: Make mm/pageattr[-test].c explicitly non-modular
  x86/mm/pat: Add comments to cachemode translation tables
  arch/*/io.h: Add ioremap_uc() to all architectures
  drivers/video/fbdev/atyfb: Use arch_phys_wc_add() and ioremap_wc()
  drivers/video/fbdev/atyfb: Replace MTRR UC hole with strong UC
  drivers/video/fbdev/atyfb: Clarify ioremap() base and length used
  drivers/video/fbdev/atyfb: Carve out framebuffer length fudging into a helper
  x86/mm, asm-generic: Add IOMMU ioremap_uc() variant default
  ...
 2015-09-01 10:07:40 -07:00
Linus Torvalds a1d8561172 Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 
Pull scheduler updates from Ingo Molnar:
 "The biggest change in this cycle is the rewrite of the main SMP load
  balancing metric: the CPU load/utilization.  The main goal was to make
  the metric more precise and more representative - see the changelog of
  this commit for the gory details:

    9d89c257df ("sched/fair: Rewrite runnable load and utilization average tracking")

  It is done in a way that significantly reduces complexity of the code:

    5 files changed, 249 insertions(+), 494 deletions(-)

  and the performance testing results are encouraging.  Nevertheless we
  need to keep an eye on potential regressions, since this potentially
  affects every SMP workload in existence.

  This work comes from Yuyang Du.

  Other changes:

   - SCHED_DL updates.  (Andrea Parri)

   - Simplify architecture callbacks by removing finish_arch_switch().
     (Peter Zijlstra et al)

   - cputime accounting: guarantee stime + utime == rtime.  (Peter
     Zijlstra)

   - optimize idle CPU wakeups some more - inspired by Facebook server
     loads.  (Mike Galbraith)

   - stop_machine fixes and updates.  (Oleg Nesterov)

   - Introduce the 'trace_sched_waking' tracepoint.  (Peter Zijlstra)

   - sched/numa tweaks.  (Srikar Dronamraju)

   - misc fixes and small cleanups"

* 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (44 commits)
  sched/deadline: Fix comment in enqueue_task_dl()
  sched/deadline: Fix comment in push_dl_tasks()
  sched: Change the sched_class::set_cpus_allowed() calling context
  sched: Make sched_class::set_cpus_allowed() unconditional
  sched: Fix a race between __kthread_bind() and sched_setaffinity()
  sched: Ensure a task has a non-normalized vruntime when returning back to CFS
  sched/numa: Fix NUMA_DIRECT topology identification
  tile: Reorganize _switch_to()
  sched, sparc32: Update scheduler comments in copy_thread()
  sched: Remove finish_arch_switch()
  sched, tile: Remove finish_arch_switch
  sched, sh: Fold finish_arch_switch() into switch_to()
  sched, score: Remove finish_arch_switch()
  sched, avr32: Remove finish_arch_switch()
  sched, MIPS: Get rid of finish_arch_switch()
  sched, arm: Remove finish_arch_switch()
  sched/fair: Clean up load average references
  sched/fair: Provide runnable_load_avg back to cfs_rq
  sched/fair: Remove task and group entity load when they are dead
  sched/fair: Init cfs_rq's sched_entity load average
  ...
 2015-08-31 20:26:22 -07:00
Linus Torvalds 26f8b7edc9 PCI changes for the v4.3 merge window: 
Enumeration
     Allocate ATS struct during enumeration (Bjorn Helgaas)
     Embed ATS info directly into struct pci_dev (Bjorn Helgaas)
     Reduce size of ATS structure elements (Bjorn Helgaas)
     Stop caching ATS Invalidate Queue Depth (Bjorn Helgaas)
     iommu/vt-d: Cache PCI ATS state and Invalidate Queue Depth (Bjorn Helgaas)
     Move MPS configuration check to pci_configure_device() (Bjorn Helgaas)
     Set MPS to match upstream bridge (Keith Busch)
     ARM/PCI: Set MPS before pci_bus_add_devices() (Murali Karicheri)
     Add pci_scan_root_bus_msi() (Lorenzo Pieralisi)
     ARM/PCI, designware, xilinx: Use pci_scan_root_bus_msi() (Lorenzo Pieralisi)
 
   Resource management
     Call pci_read_bridge_bases() from core instead of arch code (Lorenzo Pieralisi)
 
   PCI device hotplug
     pciehp: Remove unused interrupt events (Bjorn Helgaas)
     pciehp: Remove ignored MRL sensor interrupt events (Bjorn Helgaas)
     pciehp: Handle invalid data when reading from non-existent devices (Jarod Wilson)
     pciehp: Simplify pcie_poll_cmd() (Yijing Wang)
     Use "slot" and "pci_slot" for struct hotplug_slot and struct pci_slot (Yijing Wang)
     Protect pci_bus->slots with pci_slot_mutex, not pci_bus_sem (Yijing Wang)
     Hold pci_slot_mutex while searching bus->slots list (Yijing Wang)
 
   Power management
     Disable async suspend/resume for JMicron multi-function SATA/AHCI (Zhang Rui)
 
   Virtualization
     Add ACS quirks for Intel I219-LM/V (Alex Williamson)
     Restore ACS configuration as part of pci_restore_state() (Alexander Duyck)
 
   MSI
     Add pcibios_alloc_irq() and pcibios_free_irq() (Jiang Liu)
     x86: Implement pcibios_alloc_irq() and pcibios_free_irq() (Jiang Liu)
     Add helpers to manage pci_dev->irq and pci_dev->irq_managed (Jiang Liu)
     Free legacy IRQ when enabling MSI/MSI-X (Jiang Liu)
     ARM/PCI: Remove msi_controller from struct pci_sys_data (Lorenzo Pieralisi)
     Remove unused pcibios_msi_controller() hook (Lorenzo Pieralisi)
 
   Generic host bridge driver
     Remove dependency on ARM-specific struct hw_pci (Jayachandran C)
     Build setup-irq.o for arm64 (Jayachandran C)
     Add arm64 support (Jayachandran C)
 
   APM X-Gene host bridge driver
     Add APM X-Gene PCIe 64-bit prefetchable window (Duc Dang)
     Add support for a 64-bit prefetchable memory window (Duc Dang)
     Drop owner assignment from platform_driver (Krzysztof Kozlowski)
 
   Broadcom iProc host bridge driver
     Allow BCMA bus driver to be built as module (Hauke Mehrtens)
     Delete unnecessary checks before phy calls (Markus Elfring)
     Add arm64 support (Ray Jui)
 
   Synopsys DesignWare host bridge driver
     Don't complain missing *config* reg space if va_cfg0 is set (Murali Karicheri)
 
   TI DRA7xx host bridge driver
     Disable pm_runtime on get_sync failure (Kishon Vijay Abraham I)
     Add PM support (Kishon Vijay Abraham I)
     Clear MSE bit during suspend so clocks will idle (Kishon Vijay Abraham I)
     Add support to make GPIO drive PERST# line (Kishon Vijay Abraham I)
 
   Xilinx AXI host bridge driver
     Check for MSI interrupt flag before handling as INTx (Russell Joyce)
 
   Miscellaneous
     Fix Intersil/Techwell TW686[4589] AV capture class code (Krzysztof Hałasa)
     Use PCI_CLASS_SERIAL_USB instead of bare number (Bjorn Helgaas)
     Fix generic NCR 53c810 class code quirk (Bjorn Helgaas)
     Fix TI816X class code quirk (Bjorn Helgaas)
     Remove unused "pci_probe" flags (Bjorn Helgaas)
     Host bridge driver code simplifications (Fabio Estevam)
     Add dev_flags bit to access VPD through function 0 (Mark Rustad)
     Add VPD function 0 quirk for Intel Ethernet devices (Mark Rustad)
     Kill off set_irq_flags() usage (Rob Herring)
     Remove Intel Cherrytrail D3 delays (Srinidhi Kasagar)
     Clean up pci_find_capability() (Wei Yang)
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Merge tag 'pci-v4.3-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI updates from Bjorn Helgaas:
 "PCI changes for the v4.3 merge window:

  Enumeration:
   - Allocate ATS struct during enumeration (Bjorn Helgaas)
   - Embed ATS info directly into struct pci_dev (Bjorn Helgaas)
   - Reduce size of ATS structure elements (Bjorn Helgaas)
   - Stop caching ATS Invalidate Queue Depth (Bjorn Helgaas)
   - iommu/vt-d: Cache PCI ATS state and Invalidate Queue Depth (Bjorn Helgaas)
   - Move MPS configuration check to pci_configure_device() (Bjorn Helgaas)
   - Set MPS to match upstream bridge (Keith Busch)
   - ARM/PCI: Set MPS before pci_bus_add_devices() (Murali Karicheri)
   - Add pci_scan_root_bus_msi() (Lorenzo Pieralisi)
   - ARM/PCI, designware, xilinx: Use pci_scan_root_bus_msi() (Lorenzo Pieralisi)

  Resource management:
   - Call pci_read_bridge_bases() from core instead of arch code (Lorenzo Pieralisi)

  PCI device hotplug:
   - pciehp: Remove unused interrupt events (Bjorn Helgaas)
   - pciehp: Remove ignored MRL sensor interrupt events (Bjorn Helgaas)
   - pciehp: Handle invalid data when reading from non-existent devices (Jarod Wilson)
   - pciehp: Simplify pcie_poll_cmd() (Yijing Wang)
   - Use "slot" and "pci_slot" for struct hotplug_slot and struct pci_slot (Yijing Wang)
   - Protect pci_bus->slots with pci_slot_mutex, not pci_bus_sem (Yijing Wang)
   - Hold pci_slot_mutex while searching bus->slots list (Yijing Wang)

  Power management:
   - Disable async suspend/resume for JMicron multi-function SATA/AHCI (Zhang Rui)

  Virtualization:
   - Add ACS quirks for Intel I219-LM/V (Alex Williamson)
   - Restore ACS configuration as part of pci_restore_state() (Alexander Duyck)

  MSI:
   - Add pcibios_alloc_irq() and pcibios_free_irq() (Jiang Liu)
   - x86: Implement pcibios_alloc_irq() and pcibios_free_irq() (Jiang Liu)
   - Add helpers to manage pci_dev->irq and pci_dev->irq_managed (Jiang Liu)
   - Free legacy IRQ when enabling MSI/MSI-X (Jiang Liu)
   - ARM/PCI: Remove msi_controller from struct pci_sys_data (Lorenzo Pieralisi)
   - Remove unused pcibios_msi_controller() hook (Lorenzo Pieralisi)

  Generic host bridge driver:
   - Remove dependency on ARM-specific struct hw_pci (Jayachandran C)
   - Build setup-irq.o for arm64 (Jayachandran C)
   - Add arm64 support (Jayachandran C)

  APM X-Gene host bridge driver:
   - Add APM X-Gene PCIe 64-bit prefetchable window (Duc Dang)
   - Add support for a 64-bit prefetchable memory window (Duc Dang)
   - Drop owner assignment from platform_driver (Krzysztof Kozlowski)

  Broadcom iProc host bridge driver:
   - Allow BCMA bus driver to be built as module (Hauke Mehrtens)
   - Delete unnecessary checks before phy calls (Markus Elfring)
   - Add arm64 support (Ray Jui)

  Synopsys DesignWare host bridge driver:
   - Don't complain missing *config* reg space if va_cfg0 is set (Murali Karicheri)

  TI DRA7xx host bridge driver:
   - Disable pm_runtime on get_sync failure (Kishon Vijay Abraham I)
   - Add PM support (Kishon Vijay Abraham I)
   - Clear MSE bit during suspend so clocks will idle (Kishon Vijay Abraham I)
   - Add support to make GPIO drive PERST# line (Kishon Vijay Abraham I)

  Xilinx AXI host bridge driver:
   - Check for MSI interrupt flag before handling as INTx (Russell Joyce)

  Miscellaneous:
   - Fix Intersil/Techwell TW686[4589] AV capture class code (Krzysztof Hałasa)
   - Use PCI_CLASS_SERIAL_USB instead of bare number (Bjorn Helgaas)
   - Fix generic NCR 53c810 class code quirk (Bjorn Helgaas)
   - Fix TI816X class code quirk (Bjorn Helgaas)
   - Remove unused "pci_probe" flags (Bjorn Helgaas)
   - Host bridge driver code simplifications (Fabio Estevam)
   - Add dev_flags bit to access VPD through function 0 (Mark Rustad)
   - Add VPD function 0 quirk for Intel Ethernet devices (Mark Rustad)
   - Kill off set_irq_flags() usage (Rob Herring)
   - Remove Intel Cherrytrail D3 delays (Srinidhi Kasagar)
   - Clean up pci_find_capability() (Wei Yang)"

* tag 'pci-v4.3-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (72 commits)
  PCI: Disable async suspend/resume for JMicron multi-function SATA/AHCI
  PCI: Set MPS to match upstream bridge
  PCI: Move MPS configuration check to pci_configure_device()
  PCI: Drop references acquired by of_parse_phandle()
  PCI/MSI: Remove unused pcibios_msi_controller() hook
  ARM/PCI: Remove msi_controller from struct pci_sys_data
  ARM/PCI, designware, xilinx: Use pci_scan_root_bus_msi()
  PCI: Add pci_scan_root_bus_msi()
  ARM/PCI: Replace panic with WARN messages on failures
  PCI: generic: Add arm64 support
  PCI: Build setup-irq.o for arm64
  PCI: generic: Remove dependency on ARM-specific struct hw_pci
  PCI: imx6: Simplify a trivial if-return sequence
  PCI: spear: Use BUG_ON() instead of condition followed by BUG()
  PCI: dra7xx: Remove unneeded use of IS_ERR_VALUE()
  PCI: Remove pci_ats_enabled()
  PCI: Stop caching ATS Invalidate Queue Depth
  PCI: Move ATS declarations to linux/pci.h so they're all together
  PCI: Clean up ATS error handling
  PCI: Use pci_physfn() rather than looking up physfn by hand
  ...
 2015-08-31 17:14:39 -07:00
Dan Williams 033fbae988 mm: ZONE_DEVICE for "device memory" 
While pmem is usable as a block device or via DAX mappings to userspace
there are several usage scenarios that can not target pmem due to its
lack of struct page coverage. In preparation for "hot plugging" pmem
into the vmemmap add ZONE_DEVICE as a new zone to tag these pages
separately from the ones that are subject to standard page allocations.
Importantly "device memory" can be removed at will by userspace
unbinding the driver of the device.

Having a separate zone prevents allocation and otherwise marks these
pages that are distinct from typical uniform memory.  Device memory has
different lifetime and performance characteristics than RAM.  However,
since we have run out of ZONES_SHIFT bits this functionality currently
depends on sacrificing ZONE_DMA.

Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Jerome Glisse <j.glisse@gmail.com>
[hch: various simplifications in the arch interface]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
 2015-08-27 19:40:58 -04:00
Ingo Molnar 8d58b66ed2 Linux 4.2-rc8 
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Merge tag 'v4.2-rc8' into x86/mm, before applying new changes

Signed-off-by: Ingo Molnar <mingo@kernel.org>
 2015-08-25 09:59:19 +02:00
Dan Williams 92281dee82 arch: introduce memremap() 
Existing users of ioremap_cache() are mapping memory that is known in
advance to not have i/o side effects.  These users are forced to cast
away the __iomem annotation, or otherwise neglect to fix the sparse
errors thrown when dereferencing pointers to this memory.  Provide
memremap() as a non __iomem annotated ioremap_*() in the case when
ioremap is otherwise a pointer to cacheable memory. Empirically,
ioremap_<cacheable-type>() call sites are seeking memory-like semantics
(e.g.  speculative reads, and prefetching permitted).

memremap() is a break from the ioremap implementation pattern of adding
a new memremap_<type>() for each mapping type and having silent
compatibility fall backs.  Instead, the implementation defines flags
that are passed to the central memremap() and if a mapping type is not
supported by an arch memremap returns NULL.

We introduce a memremap prototype as a trivial wrapper of
ioremap_cache() and ioremap_wt().  Later, once all ioremap_cache() and
ioremap_wt() usage has been removed from drivers we teach archs to
implement arch_memremap() with the ability to strictly enforce the
mapping type.

Cc: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
 2015-08-14 13:23:28 -04:00
Viresh Kumar d5ed65d83c sh/localtimer: Migrate to new 'set-state' interface 
Migrate sh driver to the new 'set-state' interface provided by
clockevents core, the earlier 'set-mode' interface is marked obsolete
now.

This also enables us to implement callbacks for new states of clockevent
devices, for example: ONESHOT_STOPPED.

We weren't doing anything in the ->set_mode() callback. So, this patch
doesn't provide any set-state callbacks.

Cc: linux-sh@vger.kernel.org
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
 2015-08-10 11:41:04 +02:00
Viresh Kumar 71db87ba57 bus: subsys: update return type of ->remove_dev() to void 
Its return value is not used by the subsys core and nothing meaningful
can be done with it, even if we want to use it. The subsys device is
anyway getting removed.

Update prototype of ->remove_dev() to make its return type as void. Fix
all usage sites as well.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2015-08-05 17:08:14 -07:00
Peter Zijlstra b31fdac2a9 sched, sh: Fold finish_arch_switch() into switch_to() 
The code looks buggy; why would we be restoring the previous task's
DSP state after we've switched to the next task?

Fix that and put the restore in switch_to(), removing the need for
finish_arch_switch().

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Cc: michael@amarulasolutions.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
 2015-08-04 09:38:05 +02:00
Thomas Gleixner 4b979e4c61 Merge branch 'linus' into irq/core 
Pull in upstream fixes before applying conflicting changes
 2015-07-30 00:13:24 +02:00
Thomas Gleixner c497615c0c sh/intc: Prepare irq flow handlers for irq argument removal 
The irq argument of most interrupt flow handlers is unused or merily
used instead of a local variable. The handlers which need the irq
argument can retrieve the irq number from the irq descriptor.

Search and update was done with coccinelle and the invaluable help of
Julia Lawall.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Jiang Liu <jiang.liu@linux.intel.com>
Cc: Simon Horman <horms@verge.net.au>
Cc: Magnus Damm <magnus.damm@gmail.com>
Cc: Julia Lawall <Julia.Lawall@lip6.fr>
Link: http://lkml.kernel.org/r/20150713151626.872605327@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
 2015-07-29 10:08:09 +02:00
Jiang Liu 8228a04896 sh/intc: Use irq_desc_get_xxx() to avoid redundant lookup of irq_desc 
Use irq_desc_get_xxx() to avoid redundant lookup of irq_desc while we
already have a pointer to corresponding irq_desc.

Also replace generic_handle_irq with generic_handle_irq_desc() to avoid
looking up irq_desc again.

Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
Cc: Simon Horman <horms@verge.net.au>
Cc: Magnus Damm <magnus.damm@gmail.com>
Link: http://lkml.kernel.org/r/20150713151626.792845830@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
 2015-07-29 10:08:08 +02:00
Thomas Gleixner 8b8149df9c sh/irq: Use access helper irq_data_get_affinity_mask() 
This is a preparatory patch for moving irq_data struct members.

Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
Cc: Simon Horman <horms@verge.net.au>
Cc: Magnus Damm <magnus.damm@gmail.com>
Link: http://lkml.kernel.org/r/20150713151626.713278346@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
 2015-07-29 10:08:08 +02:00
Jiang Liu cde5c27568 sh/irq: Use accessor irq_data_get_node() 
Use accessor irq_data_get_node() to hide struct irq_data
implementation detail, so we can move irq_data->node to
irq_data_common once all usage sites are fixed.

Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
Cc: Simon Horman <horms@verge.net.au>
Cc: Magnus Damm <magnus.damm@gmail.com>
Link: http://lkml.kernel.org/r/20150713151626.519112900@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
 2015-07-29 10:08:06 +02:00
Luis R. Rodriguez 4c73e89266 arch/*/io.h: Add ioremap_uc() to all architectures 
This adds ioremap_uc() only for architectures that do not
include asm-generic.h/io.h as that already provides a default
definition for them for both cases where you have CONFIG_MMU
and you do not, and because of this, the number of architectures
this patch address is less than the architectures that the
ioremap_wt() patch addressed, "arch/*/io.h: Add ioremap_wt() to
all architectures").

In order to reduce the number of architectures we have to
modify by adding new architecture IO APIs we'll have to review
the architectures in this patch, see why they can't add
asm-generic.h/io.h or issues that would be created by doing
so and then spread a consistent inclusion of this header
towards the end of their own header. For instance arch/metag
includes the asm-generic/io.h *before* the ioremap*()
definitions, this should be the other way around but only
once we have guard wrappers for the non-MMU case also for
asm-generic/io.h.

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Luis R. Rodriguez <mcgrof@suse.com>
Cc: Abhilash Kesavan <a.kesavan@samsung.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Borislav Petkov <bp@suse.de>
Cc: Chris Metcalf <cmetcalf@ezchip.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Fengguang Wu <fengguang.wu@intel.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Greg Ungerer <gerg@uclinux.org>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: Haavard Skinnemoen <hskinnemoen@gmail.com>
Cc: Hans-Christian Egtvedt <egtvedt@samfundet.no>
Cc: Koichi Yasutake <yasutake.koichi@jp.panasonic.com>
Cc: Kyle McMartin <kyle@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Hurley <peter@hurleysoftware.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rob Herring <robh@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Toshi Kani <toshi.kani@hp.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: linux-am33-list@redhat.com
Cc: linux-arch@vger.kernel.org
Cc: linux-m68k@lists.linux-m68k.org
Cc: linux-sh@vger.kernel.org
Cc: linuxppc-dev@lists.ozlabs.org
Link: http://lkml.kernel.org/r/20150728181713.GB30479@wotan.suse.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
 2015-07-29 10:02:36 +02:00
Bjorn Helgaas 24b390aad2 PCI: Remove unused "pci_probe" flags 
The following flags are only used on x86, but they got copied to FR-V,
MN10300, and SuperH:

  PCI_PROBE_BIOS
  PCI_PROBE_CONF1
  PCI_PROBE_CONF2
  PCI_ASSIGN_ROMS
  PCI_NO_CHECKS
  PCI_BIOS_IRQ_SCAN
  PCI_ASSIGN_ALL_BUSSES

FR-V and MN10300 do test for PCI_ASSIGN_ROMS, but they never set it, so
it's dead code.

Remove the unused flags above.

Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
 2015-07-27 17:09:40 -05:00
Peter Zijlstra de9e432cb5 atomic: Collapse all atomic_{set,clear}_mask definitions 
Move the now generic definitions of atomic_{set,clear}_mask() into
linux/atomic.h to avoid endless and pointless repetition.

Also, provide an atomic_andnot() wrapper for those few archs that can
implement that.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
 2015-07-27 14:06:24 +02:00
Peter Zijlstra e6942b7de2 atomic: Provide atomic_{or,xor,and} 
Implement atomic logic ops -- atomic_{or,xor,and}.

These will replace the atomic_{set,clear}_mask functions that are
available on some archs.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
 2015-07-27 14:06:24 +02:00
Peter Zijlstra 658aa51459 sh: Provide atomic_{or,xor,and} 
Implement atomic logic ops -- atomic_{or,xor,and}.

These will replace the atomic_{set,clear}_mask functions that are
available on some archs.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
 2015-07-27 14:06:23 +02:00
Minfei Huang c93bf928fe ftrace: Format MCOUNT_ADDR address as type unsigned long 
Always we use type unsigned long to format the ip address, since the
value of ip address is never the negative.

This patch uses type unsigned long, instead of long, to format the ip
address. The code is more clearly to be viewed by using type unsigned
long, although it is correct by using either unsigned long or long.

Link: http://lkml.kernel.org/r/1436694744-16747-1-git-send-email-mhuang@redhat.com

Cc: Minfei Huang <mnfhuang@gmail.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: James Hogan <james.hogan@imgtec.com>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Minfei Huang <mnfhuang@gmail.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
 2015-07-20 22:30:53 -04:00
Laurent Dufour f2abeef9fd mm: clean up per architecture MM hook header files 
Commit 2ae416b142 ("mm: new mm hook framework") introduced an empty
header file (mm-arch-hooks.h) for every architecture, even those which
doesn't need to define mm hooks.

As suggested by Geert Uytterhoeven, this could be cleaned through the use
of a generic header file included via each per architecture
asm/include/Kbuild file.

The PowerPC architecture is not impacted here since this architecture has
to defined the arch_remap MM hook.

Signed-off-by: Laurent Dufour <ldufour@linux.vnet.ibm.com>
Suggested-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Vineet Gupta <vgupta@synopsys.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2015-07-17 16:39:53 -07:00
Hans Verkuil e36f1b19e8 [media] clock-sh7724.c: fix sh-vou clock identifier 
Bitrot has set in for this driver and the sh-vou clock was never enabled,
since the clock name in clock-sh7724.c was wrong. It should be sh-vou, not
sh-vou.0.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Thanks-to: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Magnus Damm <damm@opensource.se>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
 2015-07-06 08:26:08 -03:00
Linus Torvalds 2d4407079c Replace module_init with equivalent device_initcall in non modules. 
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Merge tag 'module_init-device_initcall-v4.1-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux

Pull module_init replacement part one from Paul Gortmaker:
 "Replace module_init with equivalent device_initcall in non modules.

  This series of commits converts non-modular code that is using the
  module_init() call to hook itself into the system to instead use
  device_initcall().

  The conversion is a runtime no-op, since module_init actually becomes
  __initcall in the non-modular case, and that in turn gets mapped onto
  device_initcall.  A couple files show a larger negative diffstat,
  representing ones that had a module_exit function that we remove here
  vs previously relying on the linker to dispose of it.

  We make this conversion now, so that we can relocate module_init from
  init.h into module.h in the future.

  The files changed here are just limited to those that would otherwise
  have to add module.h to obviously non-modular code, in order to avoid
  a compile fail, as testing has shown"

* tag 'module_init-device_initcall-v4.1-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux:
  MIPS: don't use module_init in non-modular cobalt/mtd.c file
  drivers/leds: don't use module_init in non-modular leds-cobalt-raq.c
  cris: don't use module_init for non-modular core eeprom.c code
  tty/metag_da: Avoid module_init/module_exit in non-modular code
  drivers/clk: don't use module_init in clk-nomadik.c which is non-modular
  xtensa: don't use module_init for non-modular core network.c code
  sh: don't use module_init in non-modular psw.c code
  mn10300: don't use module_init in non-modular flash.c code
  parisc64: don't use module_init for non-modular core perf code
  parisc: don't use module_init for non-modular core pdc_cons code
  cris: don't use module_init for non-modular core intmem.c code
  ia64: don't use module_init in non-modular sim/simscsi.c code
  ia64: don't use module_init for non-modular core kernel/mca.c code
  arm: don't use module_init in non-modular mach-vexpress/spc.c code
  powerpc: don't use module_init in non-modular 83xx suspend code
  powerpc: use device_initcall for registering rtc devices
  x86: don't use module_init in non-modular devicetree.c code
  x86: don't use module_init in non-modular intel_mid_vrtc.c
 2015-07-02 10:30:48 -07:00
Linus Torvalds 9d86b4128c Fix up implicit <module.h> users that will break later. 
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Merge tag 'module-implicit-v4.1-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux

Pull implicit module.h fixes from Paul Gortmaker:
 "Fix up implicit <module.h> users that will break later.

  The files changed here are simply modular source files that are
  implicitly relying on <module.h> being present.  We fix them up now,
  so that we can decouple some of the module related init code from the
  core init code in the future.

  The addition of the module.h include to several files here is also a
  no-op from a code generation point of view, else there would already
  be compile issues with these files today.

  There may be lots more implicit includes of <module.h> in tree, but
  these are the ones that extensive build test coverage has shown that
  must be fixed in order to avoid build breakage fallout for the pending
  module.h <---> init.h code relocation we desire to complete"

* tag 'module-implicit-v4.1-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux:
  frv: add module.h to mb93090-mb00/flash.c to avoid compile fail
  drivers/cpufreq: include <module.h> for modular exynos-cpufreq.c code
  drivers/staging: include <module.h> for modular android tegra_ion code
  crypto/asymmetric_keys: pkcs7_key_type needs module.h
  sh: mach-highlander/psw.c is tristate and should use module.h
  drivers/regulator: include <module.h> for modular max77802 code
  drivers/pcmcia: include <module.h> for modular xxs1500_ss code
  drivers/hsi: include <module.h> for modular omap_ssi code
  drivers/gpu: include <module.h> for modular rockchip code
  drivers/gpio: include <module.h> for modular crystalcove code
  drivers/clk: include <module.h> for clk-max77xxx modular code
 2015-07-02 10:25:22 -07:00
Linus Torvalds 47a469421d Merge branch 'akpm' (patches from Andrew) 
Merge second patchbomb from Andrew Morton:

 - most of the rest of MM

 - lots of misc things

 - procfs updates

 - printk feature work

 - updates to get_maintainer, MAINTAINERS, checkpatch

 - lib/ updates

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (96 commits)
  exit,stats: /* obey this comment */
  coredump: add __printf attribute to cn_*printf functions
  coredump: use from_kuid/kgid when formatting corename
  fs/reiserfs: remove unneeded cast
  NILFS2: support NFSv2 export
  fs/befs/btree.c: remove unneeded initializations
  fs/minix: remove unneeded cast
  init/do_mounts.c: add create_dev() failure log
  kasan: remove duplicate definition of the macro KASAN_FREE_PAGE
  fs/efs: femove unneeded cast
  checkpatch: emit "NOTE: <types>" message only once after multiple files
  checkpatch: emit an error when there's a diff in a changelog
  checkpatch: validate MODULE_LICENSE content
  checkpatch: add multi-line handling for PREFER_ETHER_ADDR_COPY
  checkpatch: suggest using eth_zero_addr() and eth_broadcast_addr()
  checkpatch: fix processing of MEMSET issues
  checkpatch: suggest using ether_addr_equal*()
  checkpatch: avoid NOT_UNIFIED_DIFF errors on cover-letter.patch files
  checkpatch: remove local from codespell path
  checkpatch: add --showfile to allow input via pipe to show filenames
  ...
 2015-06-26 09:52:05 -07:00
Dominik Dingel 08bd4fc156 mm/hugetlb: remove arch_prepare/release_hugepage from arch headers 
Nobody used these hooks so they were removed from common code, and can now
be removed from the architectures.

Signed-off-by: Dominik Dingel <dingel@linux.vnet.ibm.com>
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Acked-by: Ralf Baechle <ralf@linux-mips.org>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2015-06-25 17:00:35 -07:00
Linus Torvalds ad90fb9751 Merge branch 'for-4.2/sg' of git://git.kernel.dk/linux-block 
Pull asm/scatterlist.h removal from Jens Axboe:
 "We don't have any specific arch scatterlist anymore, since parisc
  finally switched over.  Kill the include"

* 'for-4.2/sg' of git://git.kernel.dk/linux-block:
  remove scatterlist.h generation from arch Kbuild files
  remove <asm/scatterlist.h>
 2015-06-25 15:22:36 -07:00
Zhang Zhen a67a31fa30 mm/hugetlb: reduce arch dependent code about hugetlb_prefault_arch_hook 
Currently we have many duplicates in definitions of
hugetlb_prefault_arch_hook.  In all architectures this function is empty.

Signed-off-by: Zhang Zhen <zhenzhang.zhang@huawei.com>
Acked-by: David Rientjes <rientjes@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2015-06-24 17:49:41 -07:00
Laurent Dufour 2ae416b142 mm: new mm hook framework 
CRIU is recreating the process memory layout by remapping the checkpointee
memory area on top of the current process (criu).  This includes remapping
the vDSO to the place it has at checkpoint time.

However some architectures like powerpc are keeping a reference to the
vDSO base address to build the signal return stack frame by calling the
vDSO sigreturn service.  So once the vDSO has been moved, this reference
is no more valid and the signal frame built later are not usable.

This patch serie is introducing a new mm hook framework, and a new
arch_remap hook which is called when mremap is done and the mm lock still
hold.  The next patch is adding the vDSO remap and unmap tracking to the
powerpc architecture.

This patch (of 3):

This patch introduces a new set of header file to manage mm hooks:
- per architecture empty header file (arch/x/include/asm/mm-arch-hooks.h)
- a generic header (include/linux/mm-arch-hooks.h)

The architecture which need to overwrite a hook as to redefine it in its
header file, while architecture which doesn't need have nothing to do.

The default hooks are defined in the generic header and are used in the
case the architecture is not defining it.

In a next step, mm hooks defined in include/asm-generic/mm_hooks.h should
be moved here.

Signed-off-by: Laurent Dufour <ldufour@linux.vnet.ibm.com>
Suggested-by: Andrew Morton <akpm@linux-foundation.org>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Pavel Emelyanov <xemul@parallels.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2015-06-24 17:49:41 -07:00
Zhang Zhen e81f2d2237 mm/hugetlb: reduce arch dependent code about huge_pmd_unshare 
Currently we have many duplicates in definitions of huge_pmd_unshare.  In
all architectures this function just returns 0 when
CONFIG_ARCH_WANT_HUGE_PMD_SHARE is N.

This patch puts the default implementation in mm/hugetlb.c and lets these
architectures use the common code.

Signed-off-by: Zhang Zhen <zhenzhang.zhang@huawei.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: James Hogan <james.hogan@imgtec.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Chris Metcalf <cmetcalf@ezchip.com>
Cc: David Rientjes <rientjes@google.com>
Cc: James Yang <James.Yang@freescale.com>
Cc: Aneesh Kumar <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2015-06-24 17:49:41 -07:00
Linus Torvalds 2ad7b44f5d Merge branch 'for-linus-clk' of git://ftp.arm.linux.org.uk/~rmk/linux-arm 
Pull clkdev updates from Russell King:
 "This series addresses some breakage in clkdev caused by a previous
  patch set from the clk tree which introduced per-user clk structures.
  This basically renamed the existing 'struct clk' to 'struct clk_hw',
  and introduced a new 'struct clk'.

  This change will break anyone using clk_add_alias() with the common
  clk code enabled.  Thankfully, the intersection of users of
  clk_add_alias() and those using the common clk code is practically
  zero, but this is something which should be fixed to keep the code
  sane.

  The problem is that clk_add_alias() does this:

        r = clk_get(...);
        l = clkdev_alloc(r, ...);
        clk_put(...);

  which causes the alias to store a pointer to 'r', which has been
  freed.

  The original patch set tried to work around this problem incorrectly -
  at clk_get() time, it tried to convert the struct clk to a struct
  clk_hw, and then creating a new struct clk from that.  Clearly, if the
  original struct clk has been freed, then we have a use-after-free bug.

  We have other places in the tree which do something similar, so this
  series also addresses those locations too.

  This series addresses this problem by converting clkdev to store and
  use the clk_hw pointer.  This allows clk_get() to only have to create
  it's per-user struct clk from the clk_hw.  We can also get to the
  desired clk_hw at clk_add_alias() or clk lookup creation time, when
  the struct clk is "alive".

  We also perform some cleanups of the code:

   - replacing looped calls to clkdev_add() with clkdev_add_table()

   - replacing open-coded lookup allocation (which should have been
     using clkdev_alloc()) and subsequent clkdev_add() with
     clkdev_create()

   - replacing open-coded clk_add_alias() with clk_add_alias()"

* 'for-linus-clk' of git://ftp.arm.linux.org.uk/~rmk/linux-arm:
  clk: s2mps11: use clkdev_create()
  ASoC: migor: use clkdev_create()
  ARM: omap2: use clkdev_add_alias()
  ARM: omap2: use clkdev_create()
  ARM: orion: use clkdev_create()
  ARM: lpc32xx: convert to use clkdev_add_table()
  SH: use clkdev_add_table()
  clkdev: add clkdev_create() helper
  clkdev: const-ify connection id to clk_add_alias()
  clkdev: get rid of redundant clk_add_alias() prototype in linux/clk.h
  clkdev: drop __init from clkdev_add_table()
  clk: update clk API documentation to clarify clk_round_rate()
  clkdev: use clk_hw internally
 2015-06-23 15:50:46 -07:00
Linus Torvalds d8133356e9 PCI changes for the v4.2 merge window: 
Enumeration
     - Move pci_ari_enabled() to global header (Alex Williamson)
     - Account for ARI in _PRT lookups (Alex Williamson)
     - Remove unused pci_scan_bus_parented() (Yijing Wang)
 
   Resource management
     - Use host bridge _CRS info on systems with >32 bit addressing (Bjorn Helgaas)
     - Use host bridge _CRS info on Foxconn K8M890-8237A (Bjorn Helgaas)
     - Fix pci_address_to_pio() conversion of CPU address to I/O port (Zhichang Yuan)
     - Add pci_bus_addr_t (Yinghai Lu)
 
   PCI device hotplug
     - Wait for pciehp command completion where necessary (Alex Williamson)
     - Drop pointless ACPI-based "slot detection" check (Rafael J. Wysocki)
     - Check ignore_hotplug for all downstream devices (Rafael J. Wysocki)
     - Propagate the "ignore hotplug" setting to parent (Rafael J. Wysocki)
     - Inline pciehp "handle event" functions into the ISR (Bjorn Helgaas)
     - Clean up pciehp debug logging (Bjorn Helgaas)
 
   Power management
     - Remove redundant PCIe port type checking (Yijing Wang)
     - Add dev->has_secondary_link to track downstream PCIe links (Yijing Wang)
     - Use dev->has_secondary_link to find downstream links for ASPM (Yijing Wang)
     - Drop __pci_disable_link_state() useless "force" parameter (Bjorn Helgaas)
     - Simplify Clock Power Management setting (Bjorn Helgaas)
 
   Virtualization
     - Add ACS quirks for Intel 9-series PCH root ports (Alex Williamson)
     - Add function 1 DMA alias quirk for Marvell 9120 (Sakari Ailus)
 
   MSI
     - Disable MSI at enumeration even if kernel doesn't support MSI (Michael S. Tsirkin)
     - Remove unused pci_msi_off() (Bjorn Helgaas)
     - Rename msi_set_enable(), msix_clear_and_set_ctrl() (Michael S.  Tsirkin)
     - Export pci_msi_set_enable(), pci_msix_clear_and_set_ctrl() (Michael S. Tsirkin)
     - Drop pci_msi_off() calls during probe (Michael S. Tsirkin)
 
   APM X-Gene host bridge driver
     - Add APM X-Gene v1 PCIe MSI/MSIX termination driver (Duc Dang)
     - Add APM X-Gene PCIe MSI DTS nodes (Duc Dang)
     - Disable Configuration Request Retry Status for v1 silicon (Duc Dang)
     - Allow config access to Root Port even when link is down (Duc Dang)
 
   Broadcom iProc host bridge driver
     - Allow override of device tree IRQ mapping function (Hauke Mehrtens)
     - Add BCMA PCIe driver (Hauke Mehrtens)
     - Directly add PCI resources (Hauke Mehrtens)
     - Free resource list after registration (Hauke Mehrtens)
 
   Freescale i.MX6 host bridge driver
     - Add speed change timeout message (Troy Kisky)
     - Rename imx6_pcie_start_link() to imx6_pcie_establish_link() (Bjorn Helgaas)
 
   Freescale Layerscape host bridge driver
     - Use dw_pcie_link_up() consistently (Bjorn Helgaas)
     - Factor out ls_pcie_establish_link() (Bjorn Helgaas)
 
   Marvell MVEBU host bridge driver
     - Remove mvebu_pcie_scan_bus() (Yijing Wang)
 
   NVIDIA Tegra host bridge driver
     - Remove tegra_pcie_scan_bus() (Yijing Wang)
 
   Synopsys DesignWare host bridge driver
     - Consolidate outbound iATU programming functions (Jisheng Zhang)
     - Use iATU0 for cfg and IO, iATU1 for MEM (Jisheng Zhang)
     - Add support for x8 links (Zhou Wang)
     - Wait for link to come up with consistent style (Bjorn Helgaas)
     - Use pci_scan_root_bus() for simplicity (Yijing Wang)
 
   TI DRA7xx host bridge driver
     - Use dw_pcie_link_up() consistently (Bjorn Helgaas)
 
   Miscellaneous
     - Include <linux/pci.h>, not <asm/pci.h> (Bjorn Helgaas)
     - Remove unnecessary #includes of <asm/pci.h> (Bjorn Helgaas)
     - Remove unused pcibios_select_root() (again) (Bjorn Helgaas)
     - Remove unused pci_dma_burst_advice() (Bjorn Helgaas)
     - xen/pcifront: Don't use deprecated function pci_scan_bus_parented() (Arnd Bergmann)
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Merge tag 'pci-v4.2-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI updates from Bjorn Helgaas:
 "PCI changes for the v4.2 merge window:

  Enumeration
    - Move pci_ari_enabled() to global header (Alex Williamson)
    - Account for ARI in _PRT lookups (Alex Williamson)
    - Remove unused pci_scan_bus_parented() (Yijing Wang)

  Resource management
    - Use host bridge _CRS info on systems with >32 bit addressing (Bjorn Helgaas)
    - Use host bridge _CRS info on Foxconn K8M890-8237A (Bjorn Helgaas)
    - Fix pci_address_to_pio() conversion of CPU address to I/O port (Zhichang Yuan)
    - Add pci_bus_addr_t (Yinghai Lu)

  PCI device hotplug
    - Wait for pciehp command completion where necessary (Alex Williamson)
    - Drop pointless ACPI-based "slot detection" check (Rafael J. Wysocki)
    - Check ignore_hotplug for all downstream devices (Rafael J. Wysocki)
    - Propagate the "ignore hotplug" setting to parent (Rafael J. Wysocki)
    - Inline pciehp "handle event" functions into the ISR (Bjorn Helgaas)
    - Clean up pciehp debug logging (Bjorn Helgaas)

  Power management
    - Remove redundant PCIe port type checking (Yijing Wang)
    - Add dev->has_secondary_link to track downstream PCIe links (Yijing Wang)
    - Use dev->has_secondary_link to find downstream links for ASPM (Yijing Wang)
    - Drop __pci_disable_link_state() useless "force" parameter (Bjorn Helgaas)
    - Simplify Clock Power Management setting (Bjorn Helgaas)

  Virtualization
    - Add ACS quirks for Intel 9-series PCH root ports (Alex Williamson)
    - Add function 1 DMA alias quirk for Marvell 9120 (Sakari Ailus)

  MSI
    - Disable MSI at enumeration even if kernel doesn't support MSI (Michael S. Tsirkin)
    - Remove unused pci_msi_off() (Bjorn Helgaas)
    - Rename msi_set_enable(), msix_clear_and_set_ctrl() (Michael S.  Tsirkin)
    - Export pci_msi_set_enable(), pci_msix_clear_and_set_ctrl() (Michael S. Tsirkin)
    - Drop pci_msi_off() calls during probe (Michael S. Tsirkin)

  APM X-Gene host bridge driver
    - Add APM X-Gene v1 PCIe MSI/MSIX termination driver (Duc Dang)
    - Add APM X-Gene PCIe MSI DTS nodes (Duc Dang)
    - Disable Configuration Request Retry Status for v1 silicon (Duc Dang)
    - Allow config access to Root Port even when link is down (Duc Dang)

  Broadcom iProc host bridge driver
    - Allow override of device tree IRQ mapping function (Hauke Mehrtens)
    - Add BCMA PCIe driver (Hauke Mehrtens)
    - Directly add PCI resources (Hauke Mehrtens)
    - Free resource list after registration (Hauke Mehrtens)

  Freescale i.MX6 host bridge driver
    - Add speed change timeout message (Troy Kisky)
    - Rename imx6_pcie_start_link() to imx6_pcie_establish_link() (Bjorn Helgaas)

  Freescale Layerscape host bridge driver
    - Use dw_pcie_link_up() consistently (Bjorn Helgaas)
    - Factor out ls_pcie_establish_link() (Bjorn Helgaas)

  Marvell MVEBU host bridge driver
    - Remove mvebu_pcie_scan_bus() (Yijing Wang)

  NVIDIA Tegra host bridge driver
    - Remove tegra_pcie_scan_bus() (Yijing Wang)

  Synopsys DesignWare host bridge driver
    - Consolidate outbound iATU programming functions (Jisheng Zhang)
    - Use iATU0 for cfg and IO, iATU1 for MEM (Jisheng Zhang)
    - Add support for x8 links (Zhou Wang)
    - Wait for link to come up with consistent style (Bjorn Helgaas)
    - Use pci_scan_root_bus() for simplicity (Yijing Wang)

  TI DRA7xx host bridge driver
    - Use dw_pcie_link_up() consistently (Bjorn Helgaas)

  Miscellaneous
    - Include <linux/pci.h>, not <asm/pci.h> (Bjorn Helgaas)
    - Remove unnecessary #includes of <asm/pci.h> (Bjorn Helgaas)
    - Remove unused pcibios_select_root() (again) (Bjorn Helgaas)
    - Remove unused pci_dma_burst_advice() (Bjorn Helgaas)
    - xen/pcifront: Don't use deprecated function pci_scan_bus_parented() (Arnd Bergmann)"

* tag 'pci-v4.2-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (58 commits)
  PCI: pciehp: Inline the "handle event" functions into the ISR
  PCI: pciehp: Rename queue_interrupt_event() to pciehp_queue_interrupt_event()
  PCI: pciehp: Make queue_interrupt_event() void
  PCI: xgene: Allow config access to Root Port even when link is down
  PCI: xgene: Disable Configuration Request Retry Status for v1 silicon
  PCI: pciehp: Clean up debug logging
  x86/PCI: Use host bridge _CRS info on systems with >32 bit addressing
  PCI: imx6: Add #define PCIE_RC_LCSR
  PCI: imx6: Use "u32", not "uint32_t"
  PCI: Remove unused pci_scan_bus_parented()
  xen/pcifront: Don't use deprecated function pci_scan_bus_parented()
  PCI: imx6: Add speed change timeout message
  PCI/ASPM: Simplify Clock Power Management setting
  PCI: designware: Wait for link to come up with consistent style
  PCI: layerscape: Factor out ls_pcie_establish_link()
  PCI: layerscape: Use dw_pcie_link_up() consistently
  PCI: dra7xx: Use dw_pcie_link_up() consistently
  x86/PCI: Use host bridge _CRS info on Foxconn K8M890-8237A
  PCI: pciehp: Wait for hotplug command completion where necessary
  PCI: Remove unused pci_dma_burst_advice()
  ...
 2015-06-23 13:41:24 -07:00
Linus Torvalds 23b7776290 Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 
Pull scheduler updates from Ingo Molnar:
 "The main changes are:

   - lockless wakeup support for futexes and IPC message queues
     (Davidlohr Bueso, Peter Zijlstra)

   - Replace spinlocks with atomics in thread_group_cputimer(), to
     improve scalability (Jason Low)

   - NUMA balancing improvements (Rik van Riel)

   - SCHED_DEADLINE improvements (Wanpeng Li)

   - clean up and reorganize preemption helpers (Frederic Weisbecker)

   - decouple page fault disabling machinery from the preemption
     counter, to improve debuggability and robustness (David
     Hildenbrand)

   - SCHED_DEADLINE documentation updates (Luca Abeni)

   - topology CPU masks cleanups (Bartosz Golaszewski)

   - /proc/sched_debug improvements (Srikar Dronamraju)"

* 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (79 commits)
  sched/deadline: Remove needless parameter in dl_runtime_exceeded()
  sched: Remove superfluous resetting of the p->dl_throttled flag
  sched/deadline: Drop duplicate init_sched_dl_class() declaration
  sched/deadline: Reduce rq lock contention by eliminating locking of non-feasible target
  sched/deadline: Make init_sched_dl_class() __init
  sched/deadline: Optimize pull_dl_task()
  sched/preempt: Add static_key() to preempt_notifiers
  sched/preempt: Fix preempt notifiers documentation about hlist_del() within unsafe iteration
  sched/stop_machine: Fix deadlock between multiple stop_two_cpus()
  sched/debug: Add sum_sleep_runtime to /proc/<pid>/sched
  sched/debug: Replace vruntime with wait_sum in /proc/sched_debug
  sched/debug: Properly format runnable tasks in /proc/sched_debug
  sched/numa: Only consider less busy nodes as numa balancing destinations
  Revert 095bebf61a ("sched/numa: Do not move past the balance point if unbalanced")
  sched/fair: Prevent throttling in early pick_next_task_fair()
  preempt: Reorganize the notrace definitions a bit
  preempt: Use preempt_schedule_context() as the official tracing preemption point
  sched: Make preempt_schedule_context() function-tracing safe
  x86: Remove cpu_sibling_mask() and cpu_core_mask()
  x86: Replace cpu_**_mask() with topology_**_cpumask()
  ...
 2015-06-22 15:52:04 -07:00
Paul Gortmaker b205118bdb sh: don't use module_init in non-modular psw.c code 
The psw.o is built for obj-y -- and hence this code is always
present.  It will never be modular, so using module_init as an alias
for __initcall can be somewhat misleading.

Fix this up now, so that we can relocate module_init from
init.h into module.h in the future.  If we don't do this, we'd
have to add module.h to obviously non-modular code, and that
would be a worse thing.

Note that direct use of __initcall is discouraged, vs. one
of the priority categorized subgroups.  As __initcall gets
mapped onto device_initcall, our use of device_initcall
directly in this change means that the runtime impact is
zero -- it will remain at level 6 in initcall ordering.

Reported-by: kbuild test robot <fengguang.wu@intel.com>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: linux-sh@vger.kernel.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
 2015-06-16 14:12:31 -04:00
Paul Gortmaker 0bbad249a6 sh: mach-highlander/psw.c is tristate and should use module.h 
This file is controlled by a tristate Kconfig option, and hence
needs to include module.h so that it can get module_init() once
we relocate it from init.h into module.h in the future.

Note that module_exit() appears to be missing from the driver, so
it is questionable whether it would actually work for a removal
and reload cycle if it was configured for a modular build.

Cc: Paul Mundt <lethal@linux-sh.org>
Cc: linux-sh@vger.kernel.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
 2015-06-16 14:12:26 -04:00
Bjorn Helgaas 01d72a9518 PCI: Remove unused pci_dma_burst_advice() 
pci_dma_burst_advice() was added by e24c2d963a ("[PATCH] PCI: DMA
bursting advice") but apparently never used.  Remove it.

Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Michal Simek <monstr@monstr.eu>	# microblaze
CC: David S. Miller <davem@davemloft.net>
 2015-06-08 07:56:43 -05:00
Bjorn Helgaas 633adc711d PCI: Remove unnecessary #includes of <asm/pci.h> 
In include/linux/pci.h, we already #include <asm/pci.h>, so we don't need
to include <asm/pci.h> directly.

Remove the unnecessary includes.  All the files here already include
<linux/pci.h>.

Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Simon Horman <horms+renesas@verge.net.au>	# sh
Acked-by: Ralf Baechle <ralf@linux-mips.org>
 2015-06-08 07:56:09 -05:00
Christoph Hellwig c546d5db75 remove scatterlist.h generation from arch Kbuild files 
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Jens Axboe <axboe@fb.com>
 2015-05-19 09:14:34 -06:00
David Hildenbrand 70ffdb9393 mm/fault, arch: Use pagefault_disable() to check for disabled pagefaults in the handler 
Introduce faulthandler_disabled() and use it to check for irq context and
disabled pagefaults (via pagefault_disable()) in the pagefault handlers.

Please note that we keep the in_atomic() checks in place - to detect
whether in irq context (in which case preemption is always properly
disabled).

In contrast, preempt_disable() should never be used to disable pagefaults.
With !CONFIG_PREEMPT_COUNT, preempt_disable() doesn't modify the preempt
counter, and therefore the result of in_atomic() differs.
We validate that condition by using might_fault() checks when calling
might_sleep().

Therefore, add a comment to faulthandler_disabled(), describing why this
is needed.

faulthandler_disabled() and pagefault_disable() are defined in
linux/uaccess.h, so let's properly add that include to all relevant files.

This patch is based on a patch from Thomas Gleixner.

Reviewed-and-tested-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: David.Laight@ACULAB.COM
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: airlied@linux.ie
Cc: akpm@linux-foundation.org
Cc: benh@kernel.crashing.org
Cc: bigeasy@linutronix.de
Cc: borntraeger@de.ibm.com
Cc: daniel.vetter@intel.com
Cc: heiko.carstens@de.ibm.com
Cc: herbert@gondor.apana.org.au
Cc: hocko@suse.cz
Cc: hughd@google.com
Cc: mst@redhat.com
Cc: paulus@samba.org
Cc: ralf@linux-mips.org
Cc: schwidefsky@de.ibm.com
Cc: yang.shi@windriver.com
Link: http://lkml.kernel.org/r/1431359540-32227-7-git-send-email-dahi@linux.vnet.ibm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
 2015-05-19 08:39:15 +02:00
Peter Zijlstra b92b8b35a2 locking/arch: Rename set_mb() to smp_store_mb() 
Since set_mb() is really about an smp_mb() -- not a IO/DMA barrier
like mb() rename it to match the recent smp_load_acquire() and
smp_store_release().

Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
 2015-05-19 08:32:00 +02:00
Thomas Gleixner a22e5f579b arch: Remove __ARCH_HAVE_CMPXCHG 
We removed the only user of this define in the rtmutex code. Get rid
of it.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
 2015-05-13 10:55:42 +02:00
Russell King 8a7711fccc SH: use clkdev_add_table() 
We have always had an efficient way of registering a table of clock
lookups - it's called clkdev_add_table().  However, some people seem
to really love writing inefficient and unnecessary code.

Convert SH to use the correct interface.

Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
 2015-05-06 11:58:58 +01:00
Linus Torvalds d6a4c0e5d3 Merge branch 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma 
Pull slave-dmaengine updates from Vinod Koul:

 - new drivers for:
        - Ingenic JZ4780 controller
        - APM X-Gene controller
        - Freescale RaidEngine device
        - Renesas USB Controller

  - remove device_alloc_chan_resources dummy handlers

  - sh driver cleanups for peri peri and related emmc and asoc patches
    as well

  - fixes and enhancements spread over the drivers

* 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma: (59 commits)
  dmaengine: dw: don't prompt for DW_DMAC_CORE
  dmaengine: shdmac: avoid unused variable warnings
  dmaengine: fix platform_no_drv_owner.cocci warnings
  dmaengine: pch_dma: fix memory leak on failure path in pch_dma_probe()
  dmaengine: at_xdmac: unlock spin lock before return
  dmaengine: xgene: devm_ioremap() returns NULL on error
  dmaengine: xgene: buffer overflow in xgene_dma_init_channels()
  dmaengine: usb-dmac: Fix dereferencing freed memory 'desc'
  dmaengine: sa11x0: report slave capabilities to upper layers
  dmaengine: vdma: Fix compilation warnings
  dmaengine: fsl_raid: statify fsl_re_chan_probe
  dmaengine: Driver support for FSL RaidEngine device.
  dmaengine: xgene_dma_init_ring_mngr() can be static
  Documentation: dma: Add documentation for the APM X-Gene SoC DMA device DTS binding
  arm64: dts: Add APM X-Gene SoC DMA device and DMA clock DTS nodes
  dmaengine: Add support for APM X-Gene SoC DMA engine driver
  dmaengine: usb-dmac: Add Renesas USB DMA Controller (USB-DMAC) driver
  dmaengine: renesas,usb-dmac: Add device tree bindings documentation
  dmaengine: edma: fixed wrongly initialized data parameter to the edma callback
  dmaengine: ste_dma40: fix implicit conversion
  ...
 2015-04-24 09:49:37 -07:00
Linus Torvalds 6496edfce9 This is the final removal (after several years!) of the obsolete cpus_* 
functions, prompted by their mis-use in staging.
 
 With these function removed, all cpu functions should only iterate to
 nr_cpu_ids, so we finally only allocate that many bits when cpumasks
 are allocated offstack.
 
 Thanks,
 Rusty.
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Merge tag 'cpumask-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux

Pull final removal of deprecated cpus_* cpumask functions from Rusty Russell:
 "This is the final removal (after several years!) of the obsolete
  cpus_* functions, prompted by their mis-use in staging.

  With these function removed, all cpu functions should only iterate to
  nr_cpu_ids, so we finally only allocate that many bits when cpumasks
  are allocated offstack"

* tag 'cpumask-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux: (25 commits)
  cpumask: remove __first_cpu / __next_cpu
  cpumask: resurrect CPU_MASK_CPU0
  linux/cpumask.h: add typechecking to cpumask_test_cpu
  cpumask: only allocate nr_cpumask_bits.
  Fix weird uses of num_online_cpus().
  cpumask: remove deprecated functions.
  mips: fix obsolete cpumask_of_cpu usage.
  x86: fix more deprecated cpu function usage.
  ia64: remove deprecated cpus_ usage.
  powerpc: fix deprecated CPU_MASK_CPU0 usage.
  CPU_MASK_ALL/CPU_MASK_NONE: remove from deprecated region.
  staging/lustre/o2iblnd: Don't use cpus_weight
  staging/lustre/libcfs: replace deprecated cpus_ calls with cpumask_
  staging/lustre/ptlrpc: Do not use deprecated cpus_* functions
  blackfin: fix up obsolete cpu function usage.
  parisc: fix up obsolete cpu function usage.
  tile: fix up obsolete cpu function usage.
  arm64: fix up obsolete cpu function usage.
  mips: fix up obsolete cpu function usage.
  x86: fix up obsolete cpu function usage.
  ...
 2015-04-20 10:19:03 -07:00
Linus Torvalds fa2e5c073a Merge branch 'exec_domain_rip_v2' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/misc 
Pull exec domain removal from Richard Weinberger:
 "This series removes execution domain support from Linux.

  The idea behind exec domains was to support different ABIs.  The
  feature was never complete nor stable.  Let's rip it out and make the
  kernel signal handling code less complicated"

* 'exec_domain_rip_v2' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/misc: (27 commits)
  arm64: Removed unused variable
  sparc: Fix execution domain removal
  Remove rest of exec domains.
  arch: Remove exec_domain from remaining archs
  arc: Remove signal translation and exec_domain
  xtensa: Remove signal translation and exec_domain
  xtensa: Autogenerate offsets in struct thread_info
  x86: Remove signal translation and exec_domain
  unicore32: Remove signal translation and exec_domain
  um: Remove signal translation and exec_domain
  tile: Remove signal translation and exec_domain
  sparc: Remove signal translation and exec_domain
  sh: Remove signal translation and exec_domain
  s390: Remove signal translation and exec_domain
  mn10300: Remove signal translation and exec_domain
  microblaze: Remove signal translation and exec_domain
  m68k: Remove signal translation and exec_domain
  m32r: Remove signal translation and exec_domain
  m32r: Autogenerate offsets in struct thread_info
  frv: Remove signal translation and exec_domain
  ...
 2015-04-15 13:53:55 -07:00
Linus Torvalds 1dcf58d6e6 Merge branch 'akpm' (patches from Andrew) 
Merge first patchbomb from Andrew Morton:

 - arch/sh updates

 - ocfs2 updates

 - kernel/watchdog feature

 - about half of mm/

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (122 commits)
  Documentation: update arch list in the 'memtest' entry
  Kconfig: memtest: update number of test patterns up to 17
  arm: add support for memtest
  arm64: add support for memtest
  memtest: use phys_addr_t for physical addresses
  mm: move memtest under mm
  mm, hugetlb: abort __get_user_pages if current has been oom killed
  mm, mempool: do not allow atomic resizing
  memcg: print cgroup information when system panics due to panic_on_oom
  mm: numa: remove migrate_ratelimited
  mm: fold arch_randomize_brk into ARCH_HAS_ELF_RANDOMIZE
  mm: split ET_DYN ASLR from mmap ASLR
  s390: redefine randomize_et_dyn for ELF_ET_DYN_BASE
  mm: expose arch_mmap_rnd when available
  s390: standardize mmap_rnd() usage
  powerpc: standardize mmap_rnd() usage
  mips: extract logic for mmap_rnd()
  arm64: standardize mmap_rnd() usage
  x86: standardize mmap_rnd() usage
  arm: factor out mmap ASLR into mmap_rnd
  ...
 2015-04-14 16:49:17 -07:00
Kirill A. Shutemov 69543d6399 sh: expose number of page table levels 
We would want to use number of page table level to define mm_struct.
Let's expose it as CONFIG_PGTABLE_LEVELS.

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: linux-sh@vger.kernel.org
Tested-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2015-04-14 16:49:02 -07:00
David Rientjes 1cf370c611 arch/sh/kernel/dwarf.c: use mempool_create_slab_pool() 
Mempools created for slab caches should use mempool_create_slab_pool().

Signed-off-by: David Rientjes <rientjes@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2015-04-14 16:48:56 -07:00
David Rientjes 7b4b425897 arch/sh/kernel/dwarf.c: destroy mempools on cleanup 
dwarf_reg_pool and dwarf_frame_pool are not properly destroyed when
cleaning up the dwarf unwinder.  Destroy them with mempool_destroy().

Also mark dwarf_unwinder_cleanup() as __init.

Signed-off-by: David Rientjes <rientjes@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2015-04-14 16:48:56 -07:00
Linus Torvalds ca2ec32658 Merge branch 'for-linus-1' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 
Pull vfs update from Al Viro:
 "Part one:

   - struct filename-related cleanups

   - saner iov_iter_init() replacements (and switching the syscalls to
     use of those)

   - ntfs switch to ->write_iter() (Anton)

   - aio cleanups and splitting iocb into common and async parts
     (Christoph)

   - assorted fixes (me, bfields, Andrew Elble)

  There's a lot more, including the completion of switchover to
  ->{read,write}_iter(), d_inode/d_backing_inode annotations, f_flags
  race fixes, etc, but that goes after #for-davem merge.  David has
  pulled it, and once it's in I'll send the next vfs pull request"

* 'for-linus-1' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (35 commits)
  sg_start_req(): use import_iovec()
  sg_start_req(): make sure that there's not too many elements in iovec
  blk_rq_map_user(): use import_single_range()
  sg_io(): use import_iovec()
  process_vm_access: switch to {compat_,}import_iovec()
  switch keyctl_instantiate_key_common() to iov_iter
  switch {compat_,}do_readv_writev() to {compat_,}import_iovec()
  aio_setup_vectored_rw(): switch to {compat_,}import_iovec()
  vmsplice_to_user(): switch to import_iovec()
  kill aio_setup_single_vector()
  aio: simplify arguments of aio_setup_..._rw()
  aio: lift iov_iter_init() into aio_setup_..._rw()
  lift iov_iter into {compat_,}do_readv_writev()
  NFS: fix BUG() crash in notify_change() with patch to chown_common()
  dcache: return -ESTALE not -EBUSY on distributed fs race
  NTFS: Version 2.1.32 - Update file write from aio_write to write_iter.
  VFS: Add iov_iter_fault_in_multipages_readable()
  drop bogus check in file_open_root()
  switch security_inode_getattr() to struct path *
  constify tomoyo_realpath_from_path()
  ...
 2015-04-14 15:31:03 -07:00
Richard Weinberger daea906dd3 sh: Remove signal translation and exec_domain 
As execution domain support is gone we can remove
signal translation from the signal code and remove
exec_domain from thread_info.

Signed-off-by: Richard Weinberger <richard@nod.at>
 2015-04-12 20:58:25 +02:00
Al Viro 74008b365d whack-a-mole: there's no point doing set_fs(USER_DS) in sigframe setup 
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
 2015-04-11 22:24:31 -04:00
Bjorn Helgaas 9e808eb6a7 PCI: Cleanup control flow 
Return errors immediately so the straightline path is the normal,
no-error path.  No functional change.

Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
 2015-03-19 10:17:22 -05:00
Yijing Wang b97ea289cf PCI: Assign resources before drivers claim devices (pci_scan_root_bus()) 
Previously, pci_scan_root_bus() created a root PCI bus, enumerated the
devices on it, and called pci_bus_add_devices(), which made the devices
available for drivers to claim them.

Most callers assigned resources to devices after pci_scan_root_bus()
returns, which may be after drivers have claimed the devices.  This is
incorrect; the PCI core should not change device resources while a driver
is managing the device.

Remove pci_bus_add_devices() from pci_scan_root_bus() and do it after any
resource assignment in the callers.

Note that ARM's pci_common_init_dev() already called pci_bus_add_devices()
after pci_scan_root_bus(), so we only need to remove the first call:

  pci_common_init_dev
    pcibios_init_hw
      pci_scan_root_bus
        pci_bus_add_devices        # first call
    pci_bus_assign_resources
    pci_bus_add_devices            # second call

[bhelgaas: changelog, drop "root_bus" var in alpha common_init_pci(),
return failure earlier in mn10300, add "return" in x86 pcibios_scan_root(),
return early if xtensa platform_pcibios_fixup() fails]
Signed-off-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: Richard Henderson <rth@twiddle.net>
CC: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
CC: Matt Turner <mattst88@gmail.com>
CC: David Howells <dhowells@redhat.com>
CC: Tony Luck <tony.luck@intel.com>
CC: Michal Simek <monstr@monstr.eu>
CC: Ralf Baechle <ralf@linux-mips.org>
CC: Koichi Yasutake <yasutake.koichi@jp.panasonic.com>
CC: Sebastian Ott <sebott@linux.vnet.ibm.com>
CC: "David S. Miller" <davem@davemloft.net>
CC: Chris Metcalf <cmetcalf@ezchip.com>
CC: Chris Zankel <chris@zankel.net>
CC: Max Filippov <jcmvbkbc@gmail.com>
CC: Thomas Gleixner <tglx@linutronix.de>
 2015-03-19 10:17:13 -05:00
Rusty Russell c8ed00107b Fix weird uses of num_online_cpus(). 
This may be OK in archs with contiguous CPU numbers and without
hotplug CPUs, but it sets a terrible example.

And open-coding it like drivers/scsi/hpsa.c is just weird.

BTRFS has a weird comparison with num_online_cpus() too, but since
BTRFS just screwed up my test machines' root partition, I'm not
touching it :)

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Reported-by: Oleg Drokin <green@linuxhacker.ru>
 2015-03-10 13:54:42 +10:30
Kuninori Morimoto 84f11d5b1f mmc: sh_mobile_sdhi: remove sh_mobile_sdhi_info 
Current sh_mobile_sdhi's platform data is set via sh_mobile_sdhi_info
and it is just copied to tmio_mmc_data.
Now, tmio mmc platform data is specified via tmio_mmc_data.
This patch replace sh_mobile_sdhi_info to tmio_mmc_data

struct sh_mobile_sdhi_info {      -> struct tmio_mmc_data {
        int dma_slave_tx;         ->    void            *chan_priv_tx;
        int dma_slave_rx;         ->    void            *chan_priv_rx;
        unsigned long tmio_flags; ->    unsigned long   flags;
        unsigned long tmio_caps;  ->    unsigned long   capabilities;
        unsigned long tmio_caps2; ->    unsigned long   capabilities2;
        u32 tmio_ocr_mask;        ->    u32             ocr_mask;
        unsigned int cd_gpio;     ->    unsigned int    cd_gpio;
};                                      unsigned int    hclk;
                                        void (*set_pwr)(...);
                                        void (*set_clk_div)(...);
                                      };

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
 2015-03-05 21:54:26 +05:30
Linus Torvalds eaa0eda562 asm-generic: uaccess.h cleanup 
Like in 3.19, I once more have a multi-stage cleanup for one asm-generic
 header file, this time the work was done by Michael Tsirkin and cleans
 up the uaccess.h file in asm-generic, as well as all architectures for
 which the respective maintainers did not pick up his patches directly.
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Merge tag 'asm-generic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic

Pull asm-generic uaccess.h cleanup from Arnd Bergmann:
 "Like in 3.19, I once more have a multi-stage cleanup for one
  asm-generic header file, this time the work was done by Michael
  Tsirkin and cleans up the uaccess.h file in asm-generic, as well as
  all architectures for which the respective maintainers did not pick up
  his patches directly"

* tag 'asm-generic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic: (37 commits)
  sparc32: nocheck uaccess coding style tweaks
  sparc64: nocheck uaccess coding style tweaks
  xtensa: macro whitespace fixes
  sh: macro whitespace fixes
  parisc: macro whitespace fixes
  m68k: macro whitespace fixes
  m32r: macro whitespace fixes
  frv: macro whitespace fixes
  cris: macro whitespace fixes
  avr32: macro whitespace fixes
  arm64: macro whitespace fixes
  arm: macro whitespace fixes
  alpha: macro whitespace fixes
  blackfin: macro whitespace fixes
  sparc64: uaccess_64 macro whitespace fixes
  sparc32: uaccess_32 macro whitespace fixes
  avr32: whitespace fix
  sh: fix put_user sparse errors
  metag: fix put_user sparse errors
  ia64: fix put_user sparse errors
  ...
 2015-02-18 10:02:24 -08:00
Linus Torvalds c833e17e27 Tighten rules for ACCESS_ONCE 
This series tightens the rules for ACCESS_ONCE to only work
 on scalar types. It also contains the necessary fixups as
 indicated by build bots of linux-next.
 Now everything is in place to prevent new non-scalar users
 of ACCESS_ONCE and we can continue to convert code to
 READ_ONCE/WRITE_ONCE.
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/borntraeger/linux

Pull ACCESS_ONCE() rule tightening from Christian Borntraeger:
 "Tighten rules for ACCESS_ONCE

  This series tightens the rules for ACCESS_ONCE to only work on scalar
  types.  It also contains the necessary fixups as indicated by build
  bots of linux-next.  Now everything is in place to prevent new
  non-scalar users of ACCESS_ONCE and we can continue to convert code to
  READ_ONCE/WRITE_ONCE"

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/borntraeger/linux:
  kernel: Fix sparse warning for ACCESS_ONCE
  next: sh: Fix compile error
  kernel: tighten rules for ACCESS ONCE
  mm/gup: Replace ACCESS_ONCE with READ_ONCE
  x86/spinlock: Leftover conversion ACCESS_ONCE->READ_ONCE
  x86/xen/p2m: Replace ACCESS_ONCE with READ_ONCE
  ppc/hugetlbfs: Replace ACCESS_ONCE with READ_ONCE
  ppc/kvm: Replace ACCESS_ONCE with READ_ONCE
 2015-02-14 10:54:28 -08:00
Andy Lutomirski f56141e3e2 all arches, signal: move restart_block to struct task_struct 
If an attacker can cause a controlled kernel stack overflow, overwriting
the restart block is a very juicy exploit target.  This is because the
restart_block is held in the same memory allocation as the kernel stack.

Moving the restart block to struct task_struct prevents this exploit by
making the restart_block harder to locate.

Note that there are other fields in thread_info that are also easy
targets, at least on some architectures.

It's also a decent simplification, since the restart code is more or less
identical on all architectures.

[james.hogan@imgtec.com: metag: align thread_info::supervisor_stack]
Signed-off-by: Andy Lutomirski <luto@amacapital.net>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Kees Cook <keescook@chromium.org>
Cc: David Miller <davem@davemloft.net>
Acked-by: Richard Weinberger <richard@nod.at>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Vineet Gupta <vgupta@synopsys.com>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Haavard Skinnemoen <hskinnemoen@gmail.com>
Cc: Hans-Christian Egtvedt <egtvedt@samfundet.no>
Cc: Steven Miao <realmz6@gmail.com>
Cc: Mark Salter <msalter@redhat.com>
Cc: Aurelien Jacquiot <a-jacquiot@ti.com>
Cc: Mikael Starvik <starvik@axis.com>
Cc: Jesper Nilsson <jesper.nilsson@axis.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Richard Kuo <rkuo@codeaurora.org>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Jonas Bonn <jonas@southpole.se>
Cc: "James E.J. Bottomley" <jejb@parisc-linux.org>
Cc: Helge Deller <deller@gmx.de>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Acked-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc)
Tested-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc)
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Chen Liqin <liqin.linux@gmail.com>
Cc: Lennox Wu <lennox.wu@gmail.com>
Cc: Chris Metcalf <cmetcalf@ezchip.com>
Cc: Guan Xuetao <gxt@mprc.pku.edu.cn>
Cc: Chris Zankel <chris@zankel.net>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2015-02-12 18:54:12 -08:00
Andrea Arcangeli a7b780750e mm: gup: use get_user_pages_unlocked within get_user_pages_fast 
This allows the get_user_pages_fast slow path to release the mmap_sem
before blocking.

Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Reviewed-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Andres Lagar-Cavilla <andreslc@google.com>
Cc: Peter Feiner <pfeiner@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2015-02-11 17:06:05 -08:00
Kirill A. Shutemov d016bf7ece mm: make FIRST_USER_ADDRESS unsigned long on all archs 
LKP has triggered a compiler warning after my recent patch "mm: account
pmd page tables to the process":

    mm/mmap.c: In function 'exit_mmap':
 >> mm/mmap.c:2857:2: warning: right shift count >= width of type [enabled by default]

The code:

 > 2857                WARN_ON(mm_nr_pmds(mm) >
   2858                                round_up(FIRST_USER_ADDRESS, PUD_SIZE) >> PUD_SHIFT);

In this, on tile, we have FIRST_USER_ADDRESS defined as 0.  round_up() has
the same type -- int.  PUD_SHIFT.

I think the best way to fix it is to define FIRST_USER_ADDRESS as unsigned
long.  On every arch for consistency.

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Reported-by: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2015-02-11 17:06:03 -08:00
Naoya Horiguchi 61f77eda9b mm/hugetlb: reduce arch dependent code around follow_huge_* 
Currently we have many duplicates in definitions around
follow_huge_addr(), follow_huge_pmd(), and follow_huge_pud(), so this
patch tries to remove the m.  The basic idea is to put the default
implementation for these functions in mm/hugetlb.c as weak symbols
(regardless of CONFIG_ARCH_WANT_GENERAL_HUGETL B), and to implement
arch-specific code only when the arch needs it.

For follow_huge_addr(), only powerpc and ia64 have their own
implementation, and in all other architectures this function just returns
ERR_PTR(-EINVAL).  So this patch sets returning ERR_PTR(-EINVAL) as
default.

As for follow_huge_(pmd|pud)(), if (pmd|pud)_huge() is implemented to
always return 0 in your architecture (like in ia64 or sparc,) it's never
called (the callsite is optimized away) no matter how implemented it is.
So in such architectures, we don't need arch-specific implementation.

In some architecture (like mips, s390 and tile,) their current
arch-specific follow_huge_(pmd|pud)() are effectively identical with the
common code, so this patch lets these architecture use the common code.

One exception is metag, where pmd_huge() could return non-zero but it
expects follow_huge_pmd() to always return NULL.  This means that we need
arch-specific implementation which returns NULL.  This behavior looks
strange to me (because non-zero pmd_huge() implies that the architecture
supports PMD-based hugepage, so follow_huge_pmd() can/should return some
relevant value,) but that's beyond this cleanup patch, so let's keep it.

Justification of non-trivial changes:
- in s390, follow_huge_pmd() checks !MACHINE_HAS_HPAGE at first, and this
  patch removes the check. This is OK because we can assume MACHINE_HAS_HPAGE
  is true when follow_huge_pmd() can be called (note that pmd_huge() has
  the same check and always returns 0 for !MACHINE_HAS_HPAGE.)
- in s390 and mips, we use HPAGE_MASK instead of PMD_MASK as done in common
  code. This patch forces these archs use PMD_MASK, but it's OK because
  they are identical in both archs.
  In s390, both of HPAGE_SHIFT and PMD_SHIFT are 20.
  In mips, HPAGE_SHIFT is defined as (PAGE_SHIFT + PAGE_SHIFT - 3) and
  PMD_SHIFT is define as (PAGE_SHIFT + PAGE_SHIFT + PTE_ORDER - 3), but
  PTE_ORDER is always 0, so these are identical.

Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Acked-by: Hugh Dickins <hughd@google.com>
Cc: James Hogan <james.hogan@imgtec.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Mel Gorman <mel@csn.ul.ie>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@suse.cz>
Cc: Rik van Riel <riel@redhat.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Luiz Capitulino <lcapitulino@redhat.com>
Cc: Nishanth Aravamudan <nacc@linux.vnet.ibm.com>
Cc: Lee Schermerhorn <lee.schermerhorn@hp.com>
Cc: Steve Capper <steve.capper@linaro.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2015-02-11 17:06:01 -08:00
Kirill A. Shutemov 8b70beac99 sh: drop _PAGE_FILE and pte_file()-related helpers 
We've replaced remap_file_pages(2) implementation with emulation.  Nobody
creates non-linear mapping anymore.

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2015-02-10 14:30:33 -08:00
Kevin Cernekee 102ca6606c sh: eliminate unused irq_reg_{readl,writel} accessors 
Defining these macros way down in arch/sh/.../irq.c doesn't cause
kernel/irq/generic-chip.c to use them.  As far as I can tell this code has
no effect.

Fixes: 332fd7c4fe ("genirq: Generic chip: Change irq_reg_{readl,writel} arguments")
Signed-off-by: Kevin Cernekee <cernekee@gmail.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be> (cpp/asm comparison)
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Jason Cooper <jason@lakedaemon.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2015-02-10 14:30:28 -08:00
Rob Landley 560b8c0ed4 sh: build superh without CONFIG_EXPERT 
What sh4 actually wants is HAVE_PATA_PLATFORM, so select that instead.

Signed-off-by: Rob Landley <rob@landley.net>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2015-02-10 14:30:28 -08:00
Linus Torvalds 33692f2759 vm: add VM_FAULT_SIGSEGV handling support 
The core VM already knows about VM_FAULT_SIGBUS, but cannot return a
"you should SIGSEGV" error, because the SIGSEGV case was generally
handled by the caller - usually the architecture fault handler.

That results in lots of duplication - all the architecture fault
handlers end up doing very similar "look up vma, check permissions, do
retries etc" - but it generally works.  However, there are cases where
the VM actually wants to SIGSEGV, and applications _expect_ SIGSEGV.

In particular, when accessing the stack guard page, libsigsegv expects a
SIGSEGV.  And it usually got one, because the stack growth is handled by
that duplicated architecture fault handler.

However, when the generic VM layer started propagating the error return
from the stack expansion in commit fee7e49d45 ("mm: propagate error
from stack expansion even for guard page"), that now exposed the
existing VM_FAULT_SIGBUS result to user space.  And user space really
expected SIGSEGV, not SIGBUS.

To fix that case, we need to add a VM_FAULT_SIGSEGV, and teach all those
duplicate architecture fault handlers about it.  They all already have
the code to handle SIGSEGV, so it's about just tying that new return
value to the existing code, but it's all a bit annoying.

This is the mindless minimal patch to do this.  A more extensive patch
would be to try to gather up the mostly shared fault handling logic into
one generic helper routine, and long-term we really should do that
cleanup.

Just from this patch, you can generally see that most architectures just
copied (directly or indirectly) the old x86 way of doing things, but in
the meantime that original x86 model has been improved to hold the VM
semaphore for shorter times etc and to handle VM_FAULT_RETRY and other
"newer" things, so it would be a good idea to bring all those
improvements to the generic case and teach other architectures about
them too.

Reported-and-tested-by: Takashi Iwai <tiwai@suse.de>
Tested-by: Jan Engelhardt <jengelh@inai.de>
Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com> # "s390 still compiles and boots"
Cc: linux-arch@vger.kernel.org
Cc: stable@vger.kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2015-01-29 10:51:32 -08:00
Guenter Roeck 378af02b1a next: sh: Fix compile error 
Commit 927609d622 ("kernel: tighten rules for ACCESS ONCE") results in a
compile failure for sh builds with CONFIG_X2TLB enabled.

arch/sh/mm/gup.c: In function 'gup_get_pte':
arch/sh/mm/gup.c:20:2: error: invalid initializer
make[1]: *** [arch/sh/mm/gup.o] Error 1

Replace ACCESS_ONCE with READ_ONCE to fix the problem.

Fixes: 927609d622 ("kernel: tighten rules for ACCESS ONCE")
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
 2015-01-19 14:14:22 +01:00
Michael S. Tsirkin 3237f28e6c sh: macro whitespace fixes 
While working on arch/sh/include/asm/uaccess.h, I noticed
that one macro within this header is made harder to read because it
violates a coding style rule: space is missing after comma.

Fix it up.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
 2015-01-13 15:24:08 +02:00
Michael S. Tsirkin 66959ed0e4 sh: fix put_user sparse errors 
virtio wants to write bitwise types to userspace using put_user.
At the moment this triggers sparse errors, since the value is passed
through an integer.

For example:

	__le32 __user *p;
	__le32 x;
	put_user(x, p);

is safe, but currently triggers a sparse warning.

Fix that up using __force.

Note: this does not suppress any useful sparse checks since caller
assigns x to typeof(*p), which in turn forces all the necessary type
checks.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
 2015-01-13 15:23:38 +02:00
Michael S. Tsirkin cad1c0dfc8 sh/uaccess: fix sparse errors 
virtio wants to read bitwise types from userspace using get_user.  At the
moment this triggers sparse errors, since the value is passed through an
integer.

Fix that up using __force.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
 2015-01-13 15:23:21 +02:00
Rafael J. Wysocki 464ed18ebd PM: Eliminate CONFIG_PM_RUNTIME 
Having switched over all of the users of CONFIG_PM_RUNTIME to use
CONFIG_PM directly, turn the latter into a user-selectable option
and drop the former entirely from the tree.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Kevin Hilman <khilman@linaro.org>
 2014-12-19 22:55:06 +01:00
Riku Voipio 957e3facd1 gcov: enable GCOV_PROFILE_ALL from ARCH Kconfigs 
Following the suggestions from Andrew Morton and Stephen Rothwell,
Dont expand the ARCH list in kernel/gcov/Kconfig. Instead,
define a ARCH_HAS_GCOV_PROFILE_ALL bool which architectures
can enable.

set ARCH_HAS_GCOV_PROFILE_ALL on Architectures where it was
previously allowed + ARM64 which I tested.

Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
Cc: Peter Oberparleiter <oberpar@linux.vnet.ibm.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2014-12-13 12:42:51 -08:00
Linus Torvalds 70e71ca0af Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 
Pull networking updates from David Miller:

 1) New offloading infrastructure and example 'rocker' driver for
    offloading of switching and routing to hardware.

    This work was done by a large group of dedicated individuals, not
    limited to: Scott Feldman, Jiri Pirko, Thomas Graf, John Fastabend,
    Jamal Hadi Salim, Andy Gospodarek, Florian Fainelli, Roopa Prabhu

 2) Start making the networking operate on IOV iterators instead of
    modifying iov objects in-situ during transfers.  Thanks to Al Viro
    and Herbert Xu.

 3) A set of new netlink interfaces for the TIPC stack, from Richard
    Alpe.

 4) Remove unnecessary looping during ipv6 routing lookups, from Martin
    KaFai Lau.

 5) Add PAUSE frame generation support to gianfar driver, from Matei
    Pavaluca.

 6) Allow for larger reordering levels in TCP, which are easily
    achievable in the real world right now, from Eric Dumazet.

 7) Add a variable of napi_schedule that doesn't need to disable cpu
    interrupts, from Eric Dumazet.

 8) Use a doubly linked list to optimize neigh_parms_release(), from
    Nicolas Dichtel.

 9) Various enhancements to the kernel BPF verifier, and allow eBPF
    programs to actually be attached to sockets.  From Alexei
    Starovoitov.

10) Support TSO/LSO in sunvnet driver, from David L Stevens.

11) Allow controlling ECN usage via routing metrics, from Florian
    Westphal.

12) Remote checksum offload, from Tom Herbert.

13) Add split-header receive, BQL, and xmit_more support to amd-xgbe
    driver, from Thomas Lendacky.

14) Add MPLS support to openvswitch, from Simon Horman.

15) Support wildcard tunnel endpoints in ipv6 tunnels, from Steffen
    Klassert.

16) Do gro flushes on a per-device basis using a timer, from Eric
    Dumazet.  This tries to resolve the conflicting goals between the
    desired handling of bulk vs.  RPC-like traffic.

17) Allow userspace to ask for the CPU upon what a packet was
    received/steered, via SO_INCOMING_CPU.  From Eric Dumazet.

18) Limit GSO packets to half the current congestion window, from Eric
    Dumazet.

19) Add a generic helper so that all drivers set their RSS keys in a
    consistent way, from Eric Dumazet.

20) Add xmit_more support to enic driver, from Govindarajulu
    Varadarajan.

21) Add VLAN packet scheduler action, from Jiri Pirko.

22) Support configurable RSS hash functions via ethtool, from Eyal
    Perry.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1820 commits)
  Fix race condition between vxlan_sock_add and vxlan_sock_release
  net/macb: fix compilation warning for print_hex_dump() called with skb->mac_header
  net/mlx4: Add support for A0 steering
  net/mlx4: Refactor QUERY_PORT
  net/mlx4_core: Add explicit error message when rule doesn't meet configuration
  net/mlx4: Add A0 hybrid steering
  net/mlx4: Add mlx4_bitmap zone allocator
  net/mlx4: Add a check if there are too many reserved QPs
  net/mlx4: Change QP allocation scheme
  net/mlx4_core: Use tasklet for user-space CQ completion events
  net/mlx4_core: Mask out host side virtualization features for guests
  net/mlx4_en: Set csum level for encapsulated packets
  be2net: Export tunnel offloads only when a VxLAN tunnel is created
  gianfar: Fix dma check map error when DMA_API_DEBUG is enabled
  cxgb4/csiostor: Don't use MASTER_MUST for fw_hello call
  net: fec: only enable mdio interrupt before phy device link up
  net: fec: clear all interrupt events to support i.MX6SX
  net: fec: reset fep link status in suspend function
  net: sock: fix access via invalid file descriptor
  net: introduce helper macro for_each_cmsghdr
  ...
 2014-12-11 14:27:06 -08:00
Linus Torvalds 2183a58803 media updates for v3.19-rc1 
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Merge tag 'media/v3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media

Pull media updates from Mauro Carvalho Chehab:
 - Two new dvb frontend drivers: mn88472 and mn88473
 - A new driver for some PCIe DVBSky cards
 - A new remote controller driver: meson-ir
 - One LIRC staging driver got rewritten and promoted to mainstream:
   igorplugusb
 - A new tuner driver (m88rs6000t)
 - The old omap2 media driver got removed from staging.  This driver
   uses an old DMA API and it is likely broken on recent kernels.
   Nobody cared enough to fix it
 - Media bus format moved to a separate header, as DRM will also use the
   definitions there
 - mem2mem_testdev were renamed to vim2m, in order to use the same
   naming convention taken by the other virtual test driver (vivid)
 - Added a new driver for coda SoC (coda-jpeg)
 - The cx88 driver got converted to use videobuf2 core
 - Make DMABUF export buffer to work with DMA Scatter/Gather and Vmalloc
   cores
 - Lots of other fixes, improvements and cleanups on the drivers.

* tag 'media/v3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (384 commits)
  [media] mn88473: One function call less in mn88473_init() after error
  [media] mn88473: Remove uneeded check before release_firmware()
  [media] lirc_zilog: Deletion of unnecessary checks before vfree()
  [media] MAINTAINERS: Add myself as img-ir maintainer
  [media] img-ir: Don't set driver's module owner
  [media] img-ir: Depend on METAG or MIPS or COMPILE_TEST
  [media] img-ir/hw: Drop [un]register_decoder declarations
  [media] img-ir/hw: Fix potential deadlock stopping timer
  [media] img-ir/hw: Always read data to clear buffer
  [media] redrat3: ensure dma is setup properly
  [media] ddbridge: remove unneeded check before dvb_unregister_device()
  [media] si2157: One function call less in si2157_init() after error
  [media] tuners: remove uneeded checks before release_firmware()
  [media] arm: omap2: rx51-peripherals: fix build warning
  [media] stv090x: add an extra protetion against buffer overflow
  [media] stv090x: Remove an unreachable code
  [media] stv090x: Some whitespace cleanups
  [media] em28xx: checkpatch cleanup: whitespaces/new lines cleanups
  [media] si2168: add support for firmware files in new format
  [media] si2168: debug printout for firmware version
  ...
 2014-12-11 11:49:23 -08:00
Linus Torvalds 92a578b064 ACPI and power management updates for 3.19-rc1 
This time we have some more new material than we used to have during
 the last couple of development cycles.
 
 The most important part of it to me is the introduction of a unified
 interface for accessing device properties provided by platform
 firmware.  It works with Device Trees and ACPI in a uniform way and
 drivers using it need not worry about where the properties come
 from as long as the platform firmware (either DT or ACPI) makes
 them available.  It covers both devices and "bare" device node
 objects without struct device representation as that turns out to
 be necessary in some cases.  This has been in the works for quite
 a few months (and development cycles) and has been approved by
 all of the relevant maintainers.
 
 On top of that, some drivers are switched over to the new interface
 (at25, leds-gpio, gpio_keys_polled) and some additional changes are
 made to the core GPIO subsystem to allow device drivers to manipulate
 GPIOs in the "canonical" way on platforms that provide GPIO information
 in their ACPI tables, but don't assign names to GPIO lines (in which
 case the driver needs to do that on the basis of what it knows about
 the device in question).  That also has been approved by the GPIO
 core maintainers and the rfkill driver is now going to use it.
 
 Second is support for hardware P-states in the intel_pstate driver.
 It uses CPUID to detect whether or not the feature is supported by
 the processor in which case it will be enabled by default.  However,
 it can be disabled entirely from the kernel command line if necessary.
 
 Next is support for a platform firmware interface based on ACPI
 operation regions used by the PMIC (Power Management Integrated
 Circuit) chips on the Intel Baytrail-T and Baytrail-T-CR platforms.
 That interface is used for manipulating power resources and for
 thermal management: sensor temperature reporting, trip point setting
 and so on.
 
 Also the ACPI core is now going to support the _DEP configuration
 information in a limited way.  Basically, _DEP it supposed to reflect
 off-the-hierarchy dependencies between devices which may be very
 indirect, like when AML for one device accesses locations in an
 operation region handled by another device's driver (usually, the
 device depended on this way is a serial bus or GPIO controller).
 The support added this time is sufficient to make the ACPI battery
 driver work on Asus T100A, but it is general enough to be able to
 cover some other use cases in the future.
 
 Finally, we have a new cpufreq driver for the Loongson1B processor.
 
 In addition to the above, there are fixes and cleanups all over the
 place as usual and a traditional ACPICA update to a recent upstream
 release.
 
 As far as the fixes go, the ACPI LPSS (Low-power Subsystem) driver
 for Intel platforms should be able to handle power management of
 the DMA engine correctly, the cpufreq-dt driver should interact
 with the thermal subsystem in a better way and the ACPI backlight
 driver should handle some more corner cases, among other things.
 
 On top of the ACPICA update there are fixes for race conditions
 in the ACPICA's interrupt handling code which might lead to some
 random and strange looking failures on some systems.
 
 In the cleanups department the most visible part is the series
 of commits targeted at getting rid of the CONFIG_PM_RUNTIME
 configuration option.  That was triggered by a discussion
 regarding the generic power domains code during which we realized
 that trying to support certain combinations of PM config options
 was painful and not really worth it, because nobody would use them
 in production anyway.  For this reason, we decided to make
 CONFIG_PM_SLEEP select CONFIG_PM_RUNTIME and that lead to the
 conclusion that the latter became redundant and CONFIG_PM could
 be used instead of it.  The material here makes that replacement
 in a major part of the tree, but there will be at least one more
 batch of that in the second part of the merge window.
 
 Specifics:
 
  - Support for retrieving device properties information from ACPI
    _DSD device configuration objects and a unified device properties
    interface for device drivers (and subsystems) on top of that.
    As stated above, this works with Device Trees and ACPI and allows
    device drivers to be written in a platform firmware (DT or ACPI)
    agnostic way.  The at25, leds-gpio and gpio_keys_polled drivers
    are now going to use this new interface and the GPIO subsystem
    is additionally modified to allow device drivers to assign names
    to GPIO resources returned by ACPI _CRS objects (in case _DSD is
    not present or does not provide the expected data).  The changes
    in this set are mostly from Mika Westerberg, Rafael J Wysocki,
    Aaron Lu, and Darren Hart with some fixes from others (Fabio Estevam,
    Geert Uytterhoeven).
 
  - Support for Hardware Managed Performance States (HWP) as described
    in Volume 3, section 14.4, of the Intel SDM in the intel_pstate
    driver.  CPUID is used to detect whether or not the feature is
    supported by the processor.  If supported, it will be enabled
    automatically unless the intel_pstate=no_hwp switch is present in
    the kernel command line.  From Dirk Brandewie.
 
  - New Intel Broadwell-H ID for intel_pstate (Dirk Brandewie).
 
  - Support for firmware interface based on ACPI operation regions
    used by the PMIC chips on the Intel Baytrail-T and Baytrail-T-CR
    platforms for power resource control and thermal management
    (Aaron Lu).
 
  - Limited support for retrieving off-the-hierarchy dependencies
    between devices from ACPI _DEP device configuration objects
    and deferred probing support for the ACPI battery driver based
    on the _DEP information to make that driver work on Asus T100A
    (Lan Tianyu).
 
  - New cpufreq driver for the Loongson1B processor (Kelvin Cheung).
 
  - ACPICA update to upstream revision 20141107 which only affects
    tools (Bob Moore).
 
  - Fixes for race conditions in the ACPICA's interrupt handling
    code and in the ACPI code related to system suspend and resume
    (Lv Zheng and Rafael J Wysocki).
 
  - ACPI core fix for an RCU-related issue in the ioremap() regions
    management code that slowed down significantly after CPUs had
    been allowed to enter idle states even if they'd had RCU callbakcs
    queued and triggered some problems in certain proprietary graphics
    driver (and elsewhere).  The fix replaces synchronize_rcu() in
    that code with synchronize_rcu_expedited() which makes the issue
    go away.  From Konstantin Khlebnikov.
 
  - ACPI LPSS (Low-Power Subsystem) driver fix to handle power
    management of the DMA engine included into the LPSS correctly.
    The problem is that the DMA engine doesn't have ACPI PM support
    of its own and it simply is turned off when the last LPSS device
    having ACPI PM support goes into D3cold.  To work around that,
    the PM domain used by the ACPI LPSS driver is redesigned so at
    least one device with ACPI PM support will be on as long as the
    DMA engine is in use.  From Andy Shevchenko.
 
  - ACPI backlight driver fix to avoid using it on "Win8-compatible"
    systems where it doesn't work and where it was used by default by
    mistake (Aaron Lu).
 
  - Assorted minor ACPI core fixes and cleanups from Tomasz Nowicki,
    Sudeep Holla, Huang Rui, Hanjun Guo, Fabian Frederick, and
    Ashwin Chaugule (mostly related to the upcoming ARM64 support).
 
  - Intel RAPL (Running Average Power Limit) power capping driver
    fixes and improvements including new processor IDs (Jacob Pan).
 
  - Generic power domains modification to power up domains after
    attaching devices to them to meet the expectations of device
    drivers and bus types assuming devices to be accessible at
    probe time (Ulf Hansson).
 
  - Preliminary support for controlling device clocks from the
    generic power domains core code and modifications of the
    ARM/shmobile platform to use that feature (Ulf Hansson).
 
  - Assorted minor fixes and cleanups of the generic power
    domains core code (Ulf Hansson, Geert Uytterhoeven).
 
  - Assorted minor fixes and cleanups of the device clocks control
    code in the PM core (Geert Uytterhoeven, Grygorii Strashko).
 
  - Consolidation of device power management Kconfig options by making
    CONFIG_PM_SLEEP select CONFIG_PM_RUNTIME and removing the latter
    which is now redundant (Rafael J Wysocki and Kevin Hilman).  That
    is the first batch of the changes needed for this purpose.
 
  - Core device runtime power management support code cleanup related
    to the execution of callbacks (Andrzej Hajda).
 
  - cpuidle ARM support improvements (Lorenzo Pieralisi).
 
  - cpuidle cleanup related to the CPUIDLE_FLAG_TIME_VALID flag and
    a new MAINTAINERS entry for ARM Exynos cpuidle (Daniel Lezcano and
    Bartlomiej Zolnierkiewicz).
 
  - New cpufreq driver callback (->ready) to be executed when the
    cpufreq core is ready to use a given policy object and cpufreq-dt
    driver modification to use that callback for cooling device
    registration (Viresh Kumar).
 
  - cpufreq core fixes and cleanups (Viresh Kumar, Vince Hsu,
    James Geboski, Tomeu Vizoso).
 
  - Assorted fixes and cleanups in the cpufreq-pcc, intel_pstate,
    cpufreq-dt, pxa2xx cpufreq drivers (Lenny Szubowicz, Ethan Zhao,
    Stefan Wahren, Petr Cvek).
 
  - OPP (Operating Performance Points) framework modification to
    allow OPPs to be removed too and update of a few cpufreq drivers
    (cpufreq-dt, exynos5440, imx6q, cpufreq) to remove OPPs (added
    during initialization) on driver removal (Viresh Kumar).
 
  - Hibernation core fixes and cleanups (Tina Ruchandani and
    Markus Elfring).
 
  - PM Kconfig fix related to CPU power management (Pankaj Dubey).
 
  - cpupower tool fix (Prarit Bhargava).
 
 /
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Merge tag 'pm+acpi-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI and power management updates from Rafael Wysocki:
 "This time we have some more new material than we used to have during
  the last couple of development cycles.

  The most important part of it to me is the introduction of a unified
  interface for accessing device properties provided by platform
  firmware.  It works with Device Trees and ACPI in a uniform way and
  drivers using it need not worry about where the properties come from
  as long as the platform firmware (either DT or ACPI) makes them
  available.  It covers both devices and "bare" device node objects
  without struct device representation as that turns out to be necessary
  in some cases.  This has been in the works for quite a few months (and
  development cycles) and has been approved by all of the relevant
  maintainers.

  On top of that, some drivers are switched over to the new interface
  (at25, leds-gpio, gpio_keys_polled) and some additional changes are
  made to the core GPIO subsystem to allow device drivers to manipulate
  GPIOs in the "canonical" way on platforms that provide GPIO
  information in their ACPI tables, but don't assign names to GPIO lines
  (in which case the driver needs to do that on the basis of what it
  knows about the device in question).  That also has been approved by
  the GPIO core maintainers and the rfkill driver is now going to use
  it.

  Second is support for hardware P-states in the intel_pstate driver.
  It uses CPUID to detect whether or not the feature is supported by the
  processor in which case it will be enabled by default.  However, it
  can be disabled entirely from the kernel command line if necessary.

  Next is support for a platform firmware interface based on ACPI
  operation regions used by the PMIC (Power Management Integrated
  Circuit) chips on the Intel Baytrail-T and Baytrail-T-CR platforms.
  That interface is used for manipulating power resources and for
  thermal management: sensor temperature reporting, trip point setting
  and so on.

  Also the ACPI core is now going to support the _DEP configuration
  information in a limited way.  Basically, _DEP it supposed to reflect
  off-the-hierarchy dependencies between devices which may be very
  indirect, like when AML for one device accesses locations in an
  operation region handled by another device's driver (usually, the
  device depended on this way is a serial bus or GPIO controller).  The
  support added this time is sufficient to make the ACPI battery driver
  work on Asus T100A, but it is general enough to be able to cover some
  other use cases in the future.

  Finally, we have a new cpufreq driver for the Loongson1B processor.

  In addition to the above, there are fixes and cleanups all over the
  place as usual and a traditional ACPICA update to a recent upstream
  release.

  As far as the fixes go, the ACPI LPSS (Low-power Subsystem) driver for
  Intel platforms should be able to handle power management of the DMA
  engine correctly, the cpufreq-dt driver should interact with the
  thermal subsystem in a better way and the ACPI backlight driver should
  handle some more corner cases, among other things.

  On top of the ACPICA update there are fixes for race conditions in the
  ACPICA's interrupt handling code which might lead to some random and
  strange looking failures on some systems.

  In the cleanups department the most visible part is the series of
  commits targeted at getting rid of the CONFIG_PM_RUNTIME configuration
  option.  That was triggered by a discussion regarding the generic
  power domains code during which we realized that trying to support
  certain combinations of PM config options was painful and not really
  worth it, because nobody would use them in production anyway.  For
  this reason, we decided to make CONFIG_PM_SLEEP select
  CONFIG_PM_RUNTIME and that lead to the conclusion that the latter
  became redundant and CONFIG_PM could be used instead of it.  The
  material here makes that replacement in a major part of the tree, but
  there will be at least one more batch of that in the second part of
  the merge window.

  Specifics:

   - Support for retrieving device properties information from ACPI _DSD
     device configuration objects and a unified device properties
     interface for device drivers (and subsystems) on top of that.  As
     stated above, this works with Device Trees and ACPI and allows
     device drivers to be written in a platform firmware (DT or ACPI)
     agnostic way.  The at25, leds-gpio and gpio_keys_polled drivers are
     now going to use this new interface and the GPIO subsystem is
     additionally modified to allow device drivers to assign names to
     GPIO resources returned by ACPI _CRS objects (in case _DSD is not
     present or does not provide the expected data).  The changes in
     this set are mostly from Mika Westerberg, Rafael J Wysocki, Aaron
     Lu, and Darren Hart with some fixes from others (Fabio Estevam,
     Geert Uytterhoeven).

   - Support for Hardware Managed Performance States (HWP) as described
     in Volume 3, section 14.4, of the Intel SDM in the intel_pstate
     driver.  CPUID is used to detect whether or not the feature is
     supported by the processor.  If supported, it will be enabled
     automatically unless the intel_pstate=no_hwp switch is present in
     the kernel command line.  From Dirk Brandewie.

   - New Intel Broadwell-H ID for intel_pstate (Dirk Brandewie).

   - Support for firmware interface based on ACPI operation regions used
     by the PMIC chips on the Intel Baytrail-T and Baytrail-T-CR
     platforms for power resource control and thermal management (Aaron
     Lu).

   - Limited support for retrieving off-the-hierarchy dependencies
     between devices from ACPI _DEP device configuration objects and
     deferred probing support for the ACPI battery driver based on the
     _DEP information to make that driver work on Asus T100A (Lan
     Tianyu).

   - New cpufreq driver for the Loongson1B processor (Kelvin Cheung).

   - ACPICA update to upstream revision 20141107 which only affects
     tools (Bob Moore).

   - Fixes for race conditions in the ACPICA's interrupt handling code
     and in the ACPI code related to system suspend and resume (Lv Zheng
     and Rafael J Wysocki).

   - ACPI core fix for an RCU-related issue in the ioremap() regions
     management code that slowed down significantly after CPUs had been
     allowed to enter idle states even if they'd had RCU callbakcs
     queued and triggered some problems in certain proprietary graphics
     driver (and elsewhere).  The fix replaces synchronize_rcu() in that
     code with synchronize_rcu_expedited() which makes the issue go
     away.  From Konstantin Khlebnikov.

   - ACPI LPSS (Low-Power Subsystem) driver fix to handle power
     management of the DMA engine included into the LPSS correctly.  The
     problem is that the DMA engine doesn't have ACPI PM support of its
     own and it simply is turned off when the last LPSS device having
     ACPI PM support goes into D3cold.  To work around that, the PM
     domain used by the ACPI LPSS driver is redesigned so at least one
     device with ACPI PM support will be on as long as the DMA engine is
     in use.  From Andy Shevchenko.

   - ACPI backlight driver fix to avoid using it on "Win8-compatible"
     systems where it doesn't work and where it was used by default by
     mistake (Aaron Lu).

   - Assorted minor ACPI core fixes and cleanups from Tomasz Nowicki,
     Sudeep Holla, Huang Rui, Hanjun Guo, Fabian Frederick, and Ashwin
     Chaugule (mostly related to the upcoming ARM64 support).

   - Intel RAPL (Running Average Power Limit) power capping driver fixes
     and improvements including new processor IDs (Jacob Pan).

   - Generic power domains modification to power up domains after
     attaching devices to them to meet the expectations of device
     drivers and bus types assuming devices to be accessible at probe
     time (Ulf Hansson).

   - Preliminary support for controlling device clocks from the generic
     power domains core code and modifications of the ARM/shmobile
     platform to use that feature (Ulf Hansson).

   - Assorted minor fixes and cleanups of the generic power domains core
     code (Ulf Hansson, Geert Uytterhoeven).

   - Assorted minor fixes and cleanups of the device clocks control code
     in the PM core (Geert Uytterhoeven, Grygorii Strashko).

   - Consolidation of device power management Kconfig options by making
     CONFIG_PM_SLEEP select CONFIG_PM_RUNTIME and removing the latter
     which is now redundant (Rafael J Wysocki and Kevin Hilman).  That
     is the first batch of the changes needed for this purpose.

   - Core device runtime power management support code cleanup related
     to the execution of callbacks (Andrzej Hajda).

   - cpuidle ARM support improvements (Lorenzo Pieralisi).

   - cpuidle cleanup related to the CPUIDLE_FLAG_TIME_VALID flag and a
     new MAINTAINERS entry for ARM Exynos cpuidle (Daniel Lezcano and
     Bartlomiej Zolnierkiewicz).

   - New cpufreq driver callback (->ready) to be executed when the
     cpufreq core is ready to use a given policy object and cpufreq-dt
     driver modification to use that callback for cooling device
     registration (Viresh Kumar).

   - cpufreq core fixes and cleanups (Viresh Kumar, Vince Hsu, James
     Geboski, Tomeu Vizoso).

   - Assorted fixes and cleanups in the cpufreq-pcc, intel_pstate,
     cpufreq-dt, pxa2xx cpufreq drivers (Lenny Szubowicz, Ethan Zhao,
     Stefan Wahren, Petr Cvek).

   - OPP (Operating Performance Points) framework modification to allow
     OPPs to be removed too and update of a few cpufreq drivers
     (cpufreq-dt, exynos5440, imx6q, cpufreq) to remove OPPs (added
     during initialization) on driver removal (Viresh Kumar).

   - Hibernation core fixes and cleanups (Tina Ruchandani and Markus
     Elfring).

   - PM Kconfig fix related to CPU power management (Pankaj Dubey).

   - cpupower tool fix (Prarit Bhargava)"

* tag 'pm+acpi-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (120 commits)
  i2c-omap / PM: Drop CONFIG_PM_RUNTIME from i2c-omap.c
  dmaengine / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM
  tools: cpupower: fix return checks for sysfs_get_idlestate_count()
  drivers: sh / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM
  e1000e / igb / PM: Eliminate CONFIG_PM_RUNTIME
  MMC / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM
  MFD / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM
  misc / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM
  media / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM
  input / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM
  leds: leds-gpio: Fix multiple instances registration without 'label' property
  iio / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM
  hsi / OMAP / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM
  i2c-hid / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM
  drm / exynos / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM
  gpio / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM
  hwrandom / exynos / PM: Use CONFIG_PM in #ifdef
  block / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM
  USB / PM: Drop CONFIG_PM_RUNTIME from the USB core
  PM: Merge the SET*_RUNTIME_PM_OPS() macros
  ...
 2014-12-10 21:17:00 -08:00
Dan Carpenter ded0014274 sh: off by one BUG_ON() in setup_bootmem_node() 
This off by one bug is harmless but it upsets the static checkers and the
code is obvious so it doesn't hurt to fix it.  The Smatch warning is:

    arch/sh/mm/numa.c:47 setup_bootmem_node()
    error: buffer overflow 'node_data' 1024 <= 1024

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Paul Mundt <lethal@linux-sh.org>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2014-12-10 17:41:02 -08:00