Commit Graph

649 Commits

Author SHA1 Message Date
Christoph Hellwig e1c7e32453 dma-mapping: always provide the dma_map_ops based implementation
Move the generic implementation to <linux/dma-mapping.h> now that all
architectures support it and remove the HAVE_DMA_ATTR Kconfig symbol now
that everyone supports them.

[valentinrothberg@gmail.com: remove leftovers in Kconfig]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Aurelien Jacquiot <a-jacquiot@ti.com>
Cc: Chris Metcalf <cmetcalf@ezchip.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Haavard Skinnemoen <hskinnemoen@gmail.com>
Cc: Hans-Christian Egtvedt <egtvedt@samfundet.no>
Cc: Helge Deller <deller@gmx.de>
Cc: James Hogan <james.hogan@imgtec.com>
Cc: Jesper Nilsson <jesper.nilsson@axis.com>
Cc: Koichi Yasutake <yasutake.koichi@jp.panasonic.com>
Cc: Ley Foon Tan <lftan@altera.com>
Cc: Mark Salter <msalter@redhat.com>
Cc: Mikael Starvik <starvik@axis.com>
Cc: Steven Miao <realmz6@gmail.com>
Cc: Vineet Gupta <vgupta@synopsys.com>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Joerg Roedel <jroedel@suse.de>
Cc: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Valentin Rothberg <valentinrothberg@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-01-20 17:09:18 -08:00
Christoph Hellwig f151341ca0 mn10300: convert to dma_map_ops
Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: David Howells <dhowells@redhat.com>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Joerg Roedel <jroedel@suse.de>
Cc: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-01-20 17:09:18 -08:00
Dan Williams d2c0f041e1 libnvdimm, pfn, pmem: allocate memmap array in persistent memory
Use the new vmem_altmap capability to enable the pmem driver to arrange
for a struct page memmap to be established in persistent memory.

[linux@roeck-us.net: mn10300: declare __pfn_to_phys() to fix build error]
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Dave Chinner <david@fromorbit.com>
Cc: Ross Zwisler <ross.zwisler@linux.intel.com>
Signed-off-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>
2016-01-15 17:56:32 -08:00
Linus Torvalds aee3bfa330 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
Pull networking updates from Davic Miller:

 1) Support busy polling generically, for all NAPI drivers.  From Eric
    Dumazet.

 2) Add byte/packet counter support to nft_ct, from Floriani Westphal.

 3) Add RSS/XPS support to mvneta driver, from Gregory Clement.

 4) Implement IPV6_HDRINCL socket option for raw sockets, from Hannes
    Frederic Sowa.

 5) Add support for T6 adapter to cxgb4 driver, from Hariprasad Shenai.

 6) Add support for VLAN device bridging to mlxsw switch driver, from
    Ido Schimmel.

 7) Add driver for Netronome NFP4000/NFP6000, from Jakub Kicinski.

 8) Provide hwmon interface to mlxsw switch driver, from Jiri Pirko.

 9) Reorganize wireless drivers into per-vendor directories just like we
    do for ethernet drivers.  From Kalle Valo.

10) Provide a way for administrators "destroy" connected sockets via the
    SOCK_DESTROY socket netlink diag operation.  From Lorenzo Colitti.

11) Add support to add/remove multicast routes via netlink, from Nikolay
    Aleksandrov.

12) Make TCP keepalive settings per-namespace, from Nikolay Borisov.

13) Add forwarding and packet duplication facilities to nf_tables, from
    Pablo Neira Ayuso.

14) Dead route support in MPLS, from Roopa Prabhu.

15) TSO support for thunderx chips, from Sunil Goutham.

16) Add driver for IBM's System i/p VNIC protocol, from Thomas Falcon.

17) Rationalize, consolidate, and more completely document the checksum
    offloading facilities in the networking stack.  From Tom Herbert.

18) Support aborting an ongoing scan in mac80211/cfg80211, from
    Vidyullatha Kanchanapally.

19) Use per-bucket spinlock for bpf hash facility, from Tom Leiming.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1375 commits)
  net: bnxt: always return values from _bnxt_get_max_rings
  net: bpf: reject invalid shifts
  phonet: properly unshare skbs in phonet_rcv()
  dwc_eth_qos: Fix dma address for multi-fragment skbs
  phy: remove an unneeded condition
  mdio: remove an unneed condition
  mdio_bus: NULL dereference on allocation error
  net: Fix typo in netdev_intersect_features
  net: freescale: mac-fec: Fix build error from phy_device API change
  net: freescale: ucc_geth: Fix build error from phy_device API change
  bonding: Prevent IPv6 link local address on enslaved devices
  IB/mlx5: Add flow steering support
  net/mlx5_core: Export flow steering API
  net/mlx5_core: Make ipv4/ipv6 location more clear
  net/mlx5_core: Enable flow steering support for the IB driver
  net/mlx5_core: Initialize namespaces only when supported by device
  net/mlx5_core: Set priority attributes
  net/mlx5_core: Connect flow tables
  net/mlx5_core: Introduce modify flow table command
  net/mlx5_core: Managing root flow table
  ...
2016-01-12 18:57:02 -08:00
Craig Gallek 538950a1b7 soreuseport: setsockopt SO_ATTACH_REUSEPORT_[CE]BPF
Expose socket options for setting a classic or extended BPF program
for use when selecting sockets in an SO_REUSEPORT group.  These options
can be used on the first socket to belong to a group before bind or
on any socket in the group after bind.

This change includes refactoring of the existing sk_filter code to
allow reuse of the existing BPF filter validation checks.

Signed-off-by: Craig Gallek <kraig@google.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-01-04 22:49:59 -05:00
Al Viro f5e6634ec0 put the remnants of ..._user_ret() to rest
they hadn't been used in last 15 years...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2016-01-04 10:28:06 -05:00
Guenter Roeck c86576ea11 mn10300: Select CONFIG_HAVE_UID16 to fix build failure
mn10300 builds fail with

fs/stat.c: In function 'cp_old_stat':
fs/stat.c:163:2: error: 'old_uid_t' undeclared

ipc/util.c: In function 'ipc64_perm_to_ipc_perm':
ipc/util.c:540:2: error: 'old_uid_t' undeclared

Select CONFIG_HAVE_UID16 and remove local definition of CONFIG_UID16
to fix the problem.

Fixes: fbc416ff86 ("arm64: fix building without CONFIG_UID16")
Cc: Arnd Bergmann <arnd@arndb.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Acked-by: David Howells <dhowells@redhat.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2015-11-30 07:01:40 -08:00
Ingo Molnar 82fc167c39 Linux 4.3-rc4
-----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQEcBAABAgAGBQJWEUxnAAoJEHm+PkMAQRiGYCYH/3gtGkFdvSLi+E1PfI8Qk3ZA
 XuYA4Mj09JBVSmaICeueMTDVrdiq0OE0zPib26GWlF/za13kNU8KgMR3+6XCuLSX
 DiCmh6mwDItoNoSIIUERLqrFHABXz8rZ3gb3uu2+kNN74Cl0piNm1YpFclEEWjMr
 9Wk5fkq+ontnDVUQOvWUxPiUXOJTvdLXBWTRDw1yTdE3RMNwRI2d/hme6Hq++WYV
 tRalZZKQaoB33js9WRVAoLVunvtna+i+/y7VGLj8QyS0+d6ec81Hey2r1/fR/oG4
 bs4ul6vtqeb3IR/PjUqxF59pSrCLEO+qrp9KrTlJNYgr1m1QyjRxWUdy/XhyaWo=
 =gIhN
 -----END PGP SIGNATURE-----

Merge tag 'v4.3-rc4' into locking/core, to pick up fixes before applying new changes

Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-10-06 17:10:28 +02:00
Linus Torvalds 30c44659f4 Merge branch 'strscpy' of git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile
Pull strscpy string copy function implementation from Chris Metcalf.

Chris sent this during the merge window, but I waffled back and forth on
the pull request, which is why it's going in only now.

The new "strscpy()" function is definitely easier to use and more secure
than either strncpy() or strlcpy(), both of which are horrible nasty
interfaces that have serious and irredeemable problems.

strncpy() has a useless return value, and doesn't NUL-terminate an
overlong result.  To make matters worse, it pads a short result with
zeroes, which is a performance disaster if you have big buffers.

strlcpy(), by contrast, is a mis-designed "fix" for strlcpy(), lacking
the insane NUL padding, but having a differently broken return value
which returns the original length of the source string.  Which means
that it will read characters past the count from the source buffer, and
you have to trust the source to be properly terminated.  It also makes
error handling fragile, since the test for overflow is unnecessarily
subtle.

strscpy() avoids both these problems, guaranteeing the NUL termination
(but not excessive padding) if the destination size wasn't zero, and
making the overflow condition very obvious by returning -E2BIG.  It also
doesn't read past the size of the source, and can thus be used for
untrusted source data too.

So why did I waffle about this for so long?

Every time we introduce a new-and-improved interface, people start doing
these interminable series of trivial conversion patches.

And every time that happens, somebody does some silly mistake, and the
conversion patch to the improved interface actually makes things worse.
Because the patch is mindnumbing and trivial, nobody has the attention
span to look at it carefully, and it's usually done over large swatches
of source code which means that not every conversion gets tested.

So I'm pulling the strscpy() support because it *is* a better interface.
But I will refuse to pull mindless conversion patches.  Use this in
places where it makes sense, but don't do trivial patches to fix things
that aren't actually known to be broken.

* 'strscpy' of git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile:
  tile: use global strscpy() rather than private copy
  string: provide strscpy()
  Make asm/word-at-a-time.h available on all architectures
2015-10-04 16:31:13 +01:00
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
Bjorn Helgaas 237865f195 PCI: Revert "PCI: Call pci_read_bridge_bases() from core instead of arch code"
Revert dff22d2054 ("PCI: Call pci_read_bridge_bases() from core instead
of arch code").

Reading PCI bridge windows is not arch-specific in itself, but there is PCI
core code that doesn't work correctly if we read them too early.  For
example, Hannes found this case on an ARM Freescale i.mx6 board:

  pci_bus 0000:00: root bus resource [mem 0x01000000-0x01efffff]
  pci 0000:00:00.0: PCI bridge to [bus 01-ff]
  pci 0000:00:00.0: BAR 8: no space for [mem size 0x01000000] (mem window)
  pci 0000:01:00.0: BAR 2: failed to assign [mem size 0x00200000]
  pci 0000:01:00.0: BAR 1: failed to assign [mem size 0x00004000]
  pci 0000:01:00.0: BAR 0: failed to assign [mem size 0x00000100]

The 00:00.0 mem window needs to be at least 3MB: the 01:00.0 device needs
0x204100 of space, and mem windows are megabyte-aligned.

Bus sizing can increase a bridge window size, but never *decrease* it (see
d65245c329 ("PCI: don't shrink bridge resources")).  Prior to
dff22d2054, ARM didn't read bridge windows at all, so the "original size"
was zero, and we assigned a 3MB window.

After dff22d2054, we read the bridge windows before sizing the bus.  The
firmware programmed a 16MB window (size 0x01000000) in 00:00.0, and since
we never decrease the size, we kept 16MB even though we only needed 3MB.
But 16MB doesn't fit in the host bridge aperture, so we failed to assign
space for the window and the downstream devices.

I think this is a defect in the PCI core: we shouldn't rely on the firmware
to assign sensible windows.

Ray reported a similar problem, also on ARM, with Broadcom iProc.

Issues like this are too hard to fix right now, so revert dff22d2054.

Reported-by: Hannes <oe5hpm@gmail.com>
Reported-by: Ray Jui <rjui@broadcom.com>
Link: http://lkml.kernel.org/r/CAAa04yFQEUJm7Jj1qMT57-LG7ZGtnhNDBe=PpSRa70Mj+XhW-A@mail.gmail.com
Link: http://lkml.kernel.org/r/55F75BB8.4070405@broadcom.com
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Yinghai Lu <yinghai@kernel.org>
Acked-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
2015-09-15 13:18:04 -05:00
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 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)
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABAgAGBQJV5FE/AAoJEFmIoMA60/r8I2QP/R9b9MrvH2i9tN98/lTDl7g3
 czE58ZM1d4kMYtW3Pm/DrYI6y6RprAaB4ZEp5rHxlFLqBPZEQwWodA19NkjECcb6
 g5qKWOdIWA4T6Jaab6a/yCmAFa0jni7iAmmTYqca9o3Xj7tFovxDxqPSYkh+rer0
 v+1sAr/4HXSiN339KR6teEF3VZqLFp6ewMydQlVS+R7kAOHHYQDqoo9WF6JnIoL5
 PO3Kbmr1WN3fZY3s98yLq1x6XmLrLlmGdJI+2r+KewO4r/05CL6wTVP/oTMi+Eti
 dueseeISlOTcTAUhk87Vap23uJPeB/rJbYoFdCr7+0AkZGe/U/E2dpZm2wyMcCvq
 OrATuFymgzIuJm5uUPsdH4lzsX97U9BcDccracfC38rYnP5u3bqHCjw8HJzANR7p
 VYbFBzc5ZCCUYtQAjyrKt2820AvTFo+Bu+z75IsJO8LQQgv/zGtQQ8grIQeAjH+l
 sAe3xOTwzZnq6Obl4qb/GElHmIGUbQ1X4Dx1mliiijKMKkhYHOA0iFnB/OBILmEZ
 wHzKU8chWcI9lip0aaX8q9i/qovdVUt2+rdo/N40l7YY66x4jkNgQQXZX+FSKk6H
 stTvEBQgK28EKCHDxMsgzTGIqllSyk4DnRMA7ij1hRWqdUbGk7wOPTvm9QSwNDWe
 SokuWzAQD9YeMRGdsYjZ
 =DX1r
 -----END PGP SIGNATURE-----

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
Ingo Molnar 8d58b66ed2 Linux 4.2-rc8
-----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQEcBAABAgAGBQJV2pUkAAoJEHm+PkMAQRiGCIoH/Rb29ZjdCoZJp9OtnjAG+qRc
 bG3YuomIdib86x7xHRKKaLWBa7din7IYjuwT/X4S4duO5a1R5Lp1sRG3IlGfhT0W
 nBNbjFl4q4bOyiTPtTRTYyh4g5UQv4IuyCnCmZyCTJyVi/O6HVM9TWKUzm68P2dJ
 30LwLUcQJ+mHueGJwFBAXe2BaojEpvYCdSX6tvbrQ/8X3FrVExZXuJl4uMYNFYNK
 ZwG/v5t7tYOiAe76JGbrEuVFPZWLPEW7amHOWR0T4Ye4nWTlBgx7fENiNRlfgcvI
 CM16l/xkyrZQ3Q5jZy1qYDfdHYF++dyEDysX4w1ae/X0aaLZn7l+u5VQD6WpkQQ=
 =IF6I
 -----END PGP SIGNATURE-----

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
Viresh Kumar 032facef42 mn10300/cevt-mn10300: Migrate to new 'set-state' interface
Migrate mn10300 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: David Howells <dhowells@redhat.com>
Cc: Koichi Yasutake <yasutake.koichi@jp.panasonic.com>
Cc: linux-am33-list@redhat.com
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2015-08-10 11:41:01 +02:00
Bjorn Helgaas 5a4f3cf0d1 Merge branches 'pci/irq', 'pci/misc', 'pci/resource' and 'pci/virtualization' into next
* pci/irq:
  PCI/MSI: Free legacy IRQ when enabling MSI/MSI-X
  PCI: Add helpers to manage pci_dev->irq and pci_dev->irq_managed
  PCI, x86: Implement pcibios_alloc_irq() and pcibios_free_irq()
  PCI: Add pcibios_alloc_irq() and pcibios_free_irq()

* pci/misc:
  PCI: Remove unused "pci_probe" flags
  PCI: Add VPD function 0 quirk for Intel Ethernet devices
  PCI: Add dev_flags bit to access VPD through function 0
  PCI / ACPI: Fix pci_acpi_optimize_delay() comment
  PCI: Remove a broken link in quirks.c
  PCI: Remove useless redundant code
  PCI: Simplify pci_find_(ext_)capability() return value checks
  PCI: Move PCI_FIND_CAP_TTL to pci.h and use it in quirks
  PCI: Add pcie_downstream_port() (true for Root and Switch Downstream Ports)
  PCI: Fix pcie_port_device_resume() comment
  PCI: Shift PCI_CLASS_NOT_DEFINED consistently with other classes
  PCI: Revert aeb30016fe ("PCI: add Intel USB specific reset method")
  PCI: Fix TI816X class code quirk
  PCI: Fix generic NCR 53c810 class code quirk
  PCI: Use PCI_CLASS_SERIAL_USB instead of bare number
  PCI: Add quirk for Intersil/Techwell TW686[4589] AV capture cards
  PCI: Remove Intel Cherrytrail D3 delays

* pci/resource:
  PCI: Call pci_read_bridge_bases() from core instead of arch code

* pci/virtualization:
  PCI: Restore ACS configuration as part of pci_restore_state()
2015-08-04 20:54:05 -05:00
Jiang Liu 9d03e784bc mn10300/irq: Use access helper irq_data_get_affinity_mask()
Use access helper irq_data_get_affinity_mask() to hide implementation
details of struct irq_desc.

Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: linux-am33-list@redhat.com
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: David Howells <dhowells@redhat.com>
Cc: Koichi Yasutake <yasutake.koichi@jp.panasonic.com>
Link: http://lkml.kernel.org/r/1433145945-789-23-git-send-email-jiang.liu@linux.intel.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2015-07-31 22:20:04 +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 805de8f43c atomic: Replace atomic_{set,clear}_mask() usage
Replace the deprecated atomic_{set,clear}_mask() usage with the now
ubiquous atomic_{or,andnot}() functions.

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 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 ddb7573ff6 mn10300: 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
Lorenzo Pieralisi dff22d2054 PCI: Call pci_read_bridge_bases() from core instead of arch code
When we scan a PCI bus, we read PCI-PCI bridge window registers with
pci_read_bridge_bases() so we can validate the resource hierarchy.  Most
architectures call pci_read_bridge_bases() from pcibios_fixup_bus(), but
PCI-PCI bridges are not arch-specific, so this doesn't need to be in
arch-specific code.

Call pci_read_bridge_bases() directly from the PCI core instead of from
arch code.

For alpha and mips, we now call pci_read_bridge_bases() always; previously
we only called it if PCI_PROBE_ONLY was set.

[bhelgaas: changelog]
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: Ralf Baechle <ralf@linux-mips.org>
CC: James E.J. Bottomley <jejb@parisc-linux.org>
CC: Michael Ellerman <mpe@ellerman.id.au>
CC: Bjorn Helgaas <bhelgaas@google.com>
CC: Richard Henderson <rth@twiddle.net>
CC: Benjamin Herrenschmidt <benh@kernel.crashing.org>
CC: David Howells <dhowells@redhat.com>
CC: Russell King <linux@arm.linux.org.uk>
CC: Tony Luck <tony.luck@intel.com>
CC: David S. Miller <davem@davemloft.net>
CC: Ingo Molnar <mingo@redhat.com>
CC: Guenter Roeck <linux@roeck-us.net>
CC: Michal Simek <monstr@monstr.eu>
CC: Chris Zankel <chris@zankel.net>
2015-07-23 10:13:29 -05:00
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
Chris Metcalf a6e2f029ae Make asm/word-at-a-time.h available on all architectures
Added the x86 implementation of word-at-a-time to the
generic version, which previously only supported big-endian.

Omitted the x86-specific load_unaligned_zeropad(), which in
any case is also not present for the existing BE-only
implementation of a word-at-a-time, and is only used under
CONFIG_DCACHE_WORD_ACCESS.

Added as a "generic-y" to the Kbuilds of all architectures
that didn't previously have it.

Signed-off-by: Chris Metcalf <cmetcalf@ezchip.com>
2015-07-08 16:41:55 -04:00
Linus Torvalds 2d4407079c Replace module_init with equivalent device_initcall in non modules.
-----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABAgAGBQJVkO5XAAoJEOvOhAQsB9HWe4cQAJcsmSXIDN2O6oxvgH8Wilof
 EIEMvT13uwBdsjQdYUY6A6B3iUV9wzEEgoosg/JRgpz5/b1FTDMIO4arUPD3Lcak
 5bmyVO2qAT+yaLAWSgn6I8DMplXrKiEuK+TkH/mW3p9TdvElLdG3Vg6UI407hSWv
 W0QbVwkNtv8XmzshV9F2YdmflT8j1PgYxIu/tEkVOWn37DNW+Fp2OVBrdTIYp3AJ
 X6bYZPEcQDCrWWW/s2GmIDrNgryiebasns+CAgGY21262jAYaRcFOJmR47AsTqW7
 DSZXIlLc/gJca++hfxqV15RZ4NRHxrebCypTsPtZUV7ZiYHI726eeUZzxsp/9itu
 mvhmi+aQUTTUP3dDhiv05f4syAKEb4zslT6SLwcna6oi09M97HfCeQsHqhcFq/MG
 KnS2JJoJQToQtJvMUXMQzp5hyHjNlOclIvCxEiL32EZU54PeJOKasy/mptNGEctk
 TxACWvoXBQglRaVN+1wIjjr0BaHJSuJa9CUnIfM4WZdSHiMQMx00XLTkZcTnSM6R
 12pE54vVolrXswGPJhy4W/Sf1yPSW1tkWSVBbkKLyCIrlAWJtu68rXhvwhG/nz6E
 3g6QrDEQGlk6bzUH4CJCEqXLPRN1bNS0XjdkEFh60Lury3Ns5yHKZXPW5vCQ5csr
 FQNUyBs595CWbJNfbn1n
 =0BDx
 -----END PGP SIGNATURE-----

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 d5fb82137b Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq fixes from Thomas Gleixner:
 "This contains:

   - a series of fixes for interrupt drivers to prevent a potential race
     when installing a chained interrupt handler

   - a fix for cpumask pointer misuse

   - a fix for using the wrong interrupt number from struct irq_data

   - removal of unused code and outdated comments

   - a few new helper functions which allow us to cleanup the interrupt
     handling code further in 4.3

   I decided against doing the cleanup at the end of this merge window
   and rather do the preparatory steps for 4.3, so we can run the final
   ABI change at the end of the 4.3 merge window with less risk"

* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (26 commits)
  ARM/LPC32xx: Use irq not hwirq for __irq_set_handler_locked()
  genirq: Implement irq_set_handler_locked()/irq_set_chip_handler_name_locked()
  genirq: Introduce helper irq_desc_get_irq()
  genirq: Remove irq_node()
  genirq: Clean up outdated comments related to include/linux/irqdesc.h
  mn10300: Fix incorrect use of irq_data->affinity
  MIPS/ralink: Fix race in installing chained IRQ handler
  MIPS/pci: Fix race in installing chained IRQ handler
  MIPS/ath25: Fix race in installing chained IRQ handler
  MIPS/ath25: Fix race in installing chained IRQ handler
  m68k/psc: Fix race in installing chained IRQ handler
  avr32/at32ap: Fix race in installing chained IRQ handler
  sh/intc: Fix race in installing chained IRQ handler
  sh/intc: Fix potential race in installing chained IRQ handler
  pinctrl/sun4i: Fix race in installing chained IRQ handler
  pinctrl/samsung: Fix race in installing chained IRQ handler
  pinctrl/samsung: Fix race in installing chained IRQ handler
  pinctrl/exynos: Fix race in installing chained IRQ handler
  pinctrl/st: Fix race in installing chained IRQ handler
  pinctrl/adi2: Fix race in installing chained IRQ handler
  ...
2015-07-01 15:19:35 -07:00
Linus Torvalds 8c7febe839 TTY/Serial driver patches for 4.2-rc1
Here's the tty and serial driver patches for 4.2-rc1.
 
 A number of individual driver updates, some code cleanups, and other
 minor things, full details in the shortlog.
 
 All have been in linux-next for a while with no reported issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v2
 
 iEYEABECAAYFAlWNoSAACgkQMUfUDdst+ymxNQCguSEmkAYNDdLyYhdcOqSxJt9u
 U1gAoMThUDoomkx6CTDMU1wn53hxgMk9
 =eCUS
 -----END PGP SIGNATURE-----

Merge tag 'tty-4.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

Pull tty/serial driver updates from Greg KH:
 "Here's the tty and serial driver patches for 4.2-rc1.

  A number of individual driver updates, some code cleanups, and other
  minor things, full details in the shortlog.

  All have been in linux-next for a while with no reported issues"

* tag 'tty-4.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (152 commits)
  Doc: serial-rs485.txt: update RS485 driver interface
  Doc: tty.txt: remove mention of the BKL
  MAINTAINERS: tty: add serial docs directory
  serial: sprd: check for NULL after calling devm_clk_get
  serial: 8250_pci: Correct uartclk for xr17v35x expansion chips
  serial: 8250_pci: Add support for 12 port Exar boards
  serial: 8250_uniphier: add bindings document for UniPhier UART
  serial: core: cleanup in uart_get_baud_rate()
  serial: stm32-usart: Add STM32 USART Driver
  tty/serial: kill off set_irq_flags usage
  tty: move linux/gsmmux.h to uapi
  doc: dt: add documentation for nxp,lpc1850-uart
  serial: 8250: add LPC18xx/43xx UART driver
  serial: 8250_uniphier: add UniPhier serial driver
  serial: 8250_dw: support ACPI platforms with integrated DMA engine
  serial: of_serial: check the return value of clk_prepare_enable()
  serial: of_serial: use devm_clk_get() instead of clk_get()
  serial: earlycon: Add support for big-endian MMIO accesses
  serial: sirf: use hrtimer for data rx
  serial: sirf: correct the fifo empty_bit
  ...
2015-06-26 15:53:22 -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
Jiang Liu 856b859df4 mn10300: Fix incorrect use of irq_data->affinity
The field affinity in struct irq_data is type of cpumask_var_t, so
we should pass in data->affinity instead of &data->affinity when
calling cpumask_xxxx().

Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: linux-am33-list@redhat.com
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: David Howells <dhowells@redhat.com>
Cc: Koichi Yasutake <yasutake.koichi@jp.panasonic.com>
Link: http://lkml.kernel.org/r/1433145945-789-14-git-send-email-jiang.liu@linux.intel.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2015-06-25 12:02:43 +02:00
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
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)
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABAgAGBQJViCSWAAoJEFmIoMA60/r8zX8P/1DPNnk+8xSQe3dYjnG8VW3P
 GPxeCqLMkjiF3ffxcLDzsgrHMjZEb8Co67WePs0k5V0lbZevoIwUo48+oO9B5jhc
 H5DuPZHyTHeOvaZv4GUY5vq/1DBh4JXmJc2V/BkaJ6qhXckF+SCam9C+s0p4950o
 QX/ifOjg/VHzmhaiL7wymJOzuniZmIttl+y+nzkl3AUJ+T6ZtQbUhz+8GZ3lj7Ma
 F+7JHhvm9K8Ljajxb6BLWTw4xgHA6ZN5PtYEx+Sl9QBYSsGfL7LnqyYD3KhJ7KV5
 4AHNJGEVhzNwSuyh+VQx1tNm7OHOqkAaTsYdCVUZRow+6CPd8P75QOMtpl+SmPJB
 RV1BAO75OTGqKg0B9IDg855y4Nh+4/dKoZlBPzpp7+cKw3ylaRAsNnaZ9ik5D62v
 RR06CFgWGHwDXSObgbRm4v0HwfAIHWWJzrPqAZmElh2dzb1Lv1I3AbB1SClCN6sl
 fnAu6CAwA47A5GT8xW3L0oQXdcSmdNUdNzZrsfDnOBIQWMsF+zBFKr6sTABVgyxp
 /WEJaNlvx8Zlq0bZlhGDdsGSbFNFzhX4avWZtXhvdcqFzH0KaVghYSayYvJE9Haq
 oakWqS+GZ3x40j+rdrgLg98AWRVraE1MvV1A7N9TIGjuuKqqbZfSP8kvX3QRQQhO
 Z2+X5hMM0s/tdYtADYu/
 =Qw+j
 -----END PGP SIGNATURE-----

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 d70b3ef54c Merge branch 'x86-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 core updates from Ingo Molnar:
 "There were so many changes in the x86/asm, x86/apic and x86/mm topics
  in this cycle that the topical separation of -tip broke down somewhat -
  so the result is a more traditional architecture pull request,
  collected into the 'x86/core' topic.

  The topics were still maintained separately as far as possible, so
  bisectability and conceptual separation should still be pretty good -
  but there were a handful of merge points to avoid excessive
  dependencies (and conflicts) that would have been poorly tested in the
  end.

  The next cycle will hopefully be much more quiet (or at least will
  have fewer dependencies).

  The main changes in this cycle were:

   * x86/apic changes, with related IRQ core changes: (Jiang Liu, Thomas
     Gleixner)

     - This is the second and most intrusive part of changes to the x86
       interrupt handling - full conversion to hierarchical interrupt
       domains:

          [IOAPIC domain]   -----
                                 |
          [MSI domain]      --------[Remapping domain] ----- [ Vector domain ]
                                 |   (optional)          |
          [HPET MSI domain] -----                        |
                                                         |
          [DMAR domain]     -----------------------------
                                                         |
          [Legacy domain]   -----------------------------

       This now reflects the actual hardware and allowed us to distangle
       the domain specific code from the underlying parent domain, which
       can be optional in the case of interrupt remapping.  It's a clear
       separation of functionality and removes quite some duct tape
       constructs which plugged the remap code between ioapic/msi/hpet
       and the vector management.

     - Intel IOMMU IRQ remapping enhancements, to allow direct interrupt
       injection into guests (Feng Wu)

   * x86/asm changes:

     - Tons of cleanups and small speedups, micro-optimizations.  This
       is in preparation to move a good chunk of the low level entry
       code from assembly to C code (Denys Vlasenko, Andy Lutomirski,
       Brian Gerst)

     - Moved all system entry related code to a new home under
       arch/x86/entry/ (Ingo Molnar)

     - Removal of the fragile and ugly CFI dwarf debuginfo annotations.
       Conversion to C will reintroduce many of them - but meanwhile
       they are only getting in the way, and the upstream kernel does
       not rely on them (Ingo Molnar)

     - NOP handling refinements. (Borislav Petkov)

   * x86/mm changes:

     - Big PAT and MTRR rework: making the code more robust and
       preparing to phase out exposing direct MTRR interfaces to drivers -
       in favor of using PAT driven interfaces (Toshi Kani, Luis R
       Rodriguez, Borislav Petkov)

     - New ioremap_wt()/set_memory_wt() interfaces to support
       Write-Through cached memory mappings.  This is especially
       important for good performance on NVDIMM hardware (Toshi Kani)

   * x86/ras changes:

     - Add support for deferred errors on AMD (Aravind Gopalakrishnan)

       This is an important RAS feature which adds hardware support for
       poisoned data.  That means roughly that the hardware marks data
       which it has detected as corrupted but wasn't able to correct, as
       poisoned data and raises an APIC interrupt to signal that in the
       form of a deferred error.  It is the OS's responsibility then to
       take proper recovery action and thus prolonge system lifetime as
       far as possible.

     - Add support for Intel "Local MCE"s: upcoming CPUs will support
       CPU-local MCE interrupts, as opposed to the traditional system-
       wide broadcasted MCE interrupts (Ashok Raj)

     - Misc cleanups (Borislav Petkov)

   * x86/platform changes:

     - Intel Atom SoC updates

  ... and lots of other cleanups, fixlets and other changes - see the
  shortlog and the Git log for details"

* 'x86-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (222 commits)
  x86/hpet: Use proper hpet device number for MSI allocation
  x86/hpet: Check for irq==0 when allocating hpet MSI interrupts
  x86/mm/pat, drivers/infiniband/ipath: Use arch_phys_wc_add() and require PAT disabled
  x86/mm/pat, drivers/media/ivtv: Use arch_phys_wc_add() and require PAT disabled
  x86/platform/intel/baytrail: Add comments about why we disabled HPET on Baytrail
  genirq: Prevent crash in irq_move_irq()
  genirq: Enhance irq_data_to_desc() to support hierarchy irqdomain
  iommu, x86: Properly handle posted interrupts for IOMMU hotplug
  iommu, x86: Provide irq_remapping_cap() interface
  iommu, x86: Setup Posted-Interrupts capability for Intel iommu
  iommu, x86: Add cap_pi_support() to detect VT-d PI capability
  iommu, x86: Avoid migrating VT-d posted interrupts
  iommu, x86: Save the mode (posted or remapped) of an IRTE
  iommu, x86: Implement irq_set_vcpu_affinity for intel_ir_chip
  iommu: dmar: Provide helper to copy shared irte fields
  iommu: dmar: Extend struct irte for VT-d Posted-Interrupts
  iommu: Add new member capability to struct irq_remap_ops
  x86/asm/entry/64: Disentangle error_entry/exit gsbase/ebx/usermode code
  x86/asm/entry/32: Shorten __audit_syscall_entry() args preparation
  x86/asm/entry/32: Explain reloading of registers after __audit_syscall_entry()
  ...
2015-06-22 17:59:09 -07:00
Paul Gortmaker 1b4d5beecb mn10300: don't use module_init in non-modular flash.c code
The flash.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: David Howells <dhowells@redhat.com>
Acked-by: David Howells <dhowells@redhat.com>
Cc: Koichi Yasutake <yasutake.koichi@jp.panasonic.com>
Cc: linux-am33-list@redhat.com
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2015-06-16 14:12:30 -04:00
Bjorn Helgaas d59d36a7fc PCI: Remove unused pcibios_select_root() (again)
a6c140969b ("Delete pcibios_select_root") removed pcibios_select_root().
But a7db504052 ("PCI: remove pcibios_scan_all_fns()") added a few copies
back, probably with some incorrect merge conflict resolutions.

Remove the still-unused pcibios_select_root() definitions.

Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2015-06-08 07:56:21 -05:00
Toshi Kani 556269c138 arch/*/io.h: Add ioremap_wt() to all architectures
Add ioremap_wt() to all arch-specific asm/io.h headers which
define ioremap_wc() locally. These headers do not include
<asm-generic/iomap.h>. Some of them include <asm-generic/io.h>,
but ioremap_wt() is defined for consistency since they define
all ioremap_xxx locally.

In all architectures without Write-Through support, ioremap_wt()
is defined indentical to ioremap_nocache().

frv and m68k already have ioremap_writethrough(). On those we
add ioremap_wt() indetical to ioremap_writethrough() and defines
ARCH_HAS_IOREMAP_WT in both architectures.

The ioremap_wt() interface is exported to drivers.

Signed-off-by: Toshi Kani <toshi.kani@hp.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Elliott@hp.com
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Luis R. Rodriguez <mcgrof@suse.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: arnd@arndb.de
Cc: hch@lst.de
Cc: hmh@hmh.eng.br
Cc: jgross@suse.com
Cc: konrad.wilk@oracle.com
Cc: linux-mm <linux-mm@kvack.org>
Cc: linux-nvdimm@lists.01.org
Cc: stefan.bader@canonical.com
Cc: yigal@plexistor.com
Link: http://lkml.kernel.org/r/1433436928-31903-9-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-06-07 15:28:57 +02:00
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
David Hildenbrand 2cb7c9cb42 sched/preempt, mm/kmap: Explicitly disable/enable preemption in kmap_atomic_*
The existing code relies on pagefault_disable() implicitly disabling
preemption, so that no schedule will happen between kmap_atomic() and
kunmap_atomic().

Let's make this explicit, to prepare for pagefault_disable() not
touching preemption anymore.

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/1431359540-32227-5-git-send-email-dahi@linux.vnet.ibm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-05-19 08:39:14 +02:00
Valentin Rothberg 507224aa88 serial: 8250: remove Kconfig indirection
Remove CONFIG_SERIAL_DETECT_IRQ and CONFIG_SERIAL_MANY_PORTS, and
substitute all references to the proper 8250 Kconfig options.  Now, the
actual Kconfig dependencies are not hidden when reading the code and
static analyzers are less confused.

Signed-off-by: Valentin Rothberg <valentinrothberg@gmail.com>
Reviewed-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-05-06 22:27:00 +02:00
Christoph Hellwig 84be456f88 remove <asm/scatterlist.h>
We don't have any arch specific scatterlist now that parisc switched over
to the generic one.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
2015-05-05 13:35:39 -06:00
Linus Torvalds d56a669ca5 Devicetree updates for 4.1:
- DT endianness specification bindings
 - Big endian 8250 serial support
 - DT overlay unittest updates
 - Various DT doc updates
 - Compile fixes for OF_IRQ=n
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQEcBAABAgAGBQJVOG5kAAoJEMhvYp4jgsXihDgH/3pmPSjuRG1bhGssmnchHjWh
 SU2eS2MZnlD60UqRt7jd3smCX2qL83tfwpFhOvCT9Mz775E7ggmYq9fS8pCYAbaD
 x98mUrE2GzdUzlrL6RS8Z0ExjyGwbMoW3+cZtyPkmC6CsW0fwqEPmEyk7m+Hk8C3
 w3pWG06o+G8UjiFmwbr8Pki2ykxvucr22NCzH4SS6bAD4QOrQO3v48QkUg7XFlVc
 NHNzQbswL85uOJ7uuAbxg+s8TXkwcxUeMJEKldLrjuyppO3N1MjnOgCptnhVNOOb
 zK+IsS378jMiNjAg2ui/BLH60N5yadkgk4+L4iPPy+y/yR61NCVXxRe11IQJxb0=
 =rtv6
 -----END PGP SIGNATURE-----

Merge tag 'devicetree-for-4.1' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux

Pull second batch of devicetree updates from Rob Herring:
 "As Grant mentioned in the first devicetree pull request, here is the
  2nd batch of DT changes for 4.1.  The main remaining item here is the
  endianness bindings and related 8250 driver support.

   - DT endianness specification bindings

   - big-endian 8250 serial support

   - DT overlay unittest updates

   - various DT doc updates

   - compile fixes for OF_IRQ=n"

* tag 'devicetree-for-4.1' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
  frv: add io{read,write}{16,32}be functions
  mn10300: add io{read,write}{16,32}be functions
  Documentation: DT bindings: add doc for Altera's SoCFPGA platform
  of: base: improve of_get_next_child() kernel-doc
  Doc: dt: arch_timer: discourage clock-frequency use
  of: unittest: overlay: Keep track of created overlays
  of/fdt: fix allocation size for device node path
  serial: of_serial: Support big-endian register accesses
  serial: 8250: Add support for big-endian MMIO accesses
  of: Document {little,big,native}-endian bindings
  of/fdt: Add endianness helper function for early init code
  of: Add helper function to check MMIO register endianness
  of/fdt: Remove "reg" data prints from early_init_dt_scan_memory
  of: add vendor prefix for Artesyn
  of: Add dummy of_irq_to_resource_table() for IRQ_OF=n
  of: OF_IRQ should depend on IRQ_DOMAIN
2015-04-24 08:46:18 -07:00
Guenter Roeck 601e3ad9de mn10300: add io{read,write}{16,32}be functions
These functions are used in various drivers, including the latest
version of the 8250 driver. The latter causes the following build failure.

drivers/tty/serial/8250/8250_core.c: In function 'mem32be_serial_out':
drivers/tty/serial/8250/8250_core.c:456:2: error:
			implicit declaration of function 'iowrite32be'
drivers/tty/serial/8250/8250_core.c: In function 'mem32be_serial_in':
drivers/tty/serial/8250/8250_core.c:462:2: error:
			implicit declaration of function 'ioread32be'

Cc: Kevin Cernekee <cernekee@gmail.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Fixes: c627f2ceb6 ("serial: 8250: Add support for big-endian MMIO
	accesses")
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Rob Herring <robh@kernel.org>
2015-04-22 22:37:56 -05:00
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
Richard Weinberger 78d156b8d8 mn10300: 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
Bjorn Helgaas 8e795840e4 Merge branches 'pci/enumeration' and 'pci/virtualization' into next
* pci/enumeration:
  PCI: Cleanup control flow
  sparc/PCI: Claim bus resources before pci_bus_add_devices()
  PCI: Assign resources before drivers claim devices (pci_scan_root_bus())
  PCI: Assign resources before drivers claim devices (pci_scan_bus())

* pci/virtualization:
  PCI: Add ACS quirks for Intel 1G NICs
2015-03-23 17:17:34 -05:00