21 Jan, 2016
2 commits
-
Move the generic implementation to 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
Cc: "David S. Miller"
Cc: Aurelien Jacquiot
Cc: Chris Metcalf
Cc: David Howells
Cc: Geert Uytterhoeven
Cc: Haavard Skinnemoen
Cc: Hans-Christian Egtvedt
Cc: Helge Deller
Cc: James Hogan
Cc: Jesper Nilsson
Cc: Koichi Yasutake
Cc: Ley Foon Tan
Cc: Mark Salter
Cc: Mikael Starvik
Cc: Steven Miao
Cc: Vineet Gupta
Cc: Christian Borntraeger
Cc: Joerg Roedel
Cc: Sebastian Ott
Signed-off-by: Valentin Rothberg
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Commits 21f55b018ba5 ("arch/*/include/uapi/asm/mman.h: : let MADV_FREE
have same value for all architectures") and ef58978f1eaa ("mm: define
MADV_FREE for some arches") both defined MADV_FREE, but did not use the
same values. This results in build errors such as./arch/alpha/include/uapi/asm/mman.h:53:0: error: "MADV_FREE" redefined
./arch/alpha/include/uapi/asm/mman.h:50:0: note: this is the location of the previous definitionfor the affected architectures.
Fixes: 21f55b018ba5 ("arch/*/include/uapi/asm/mman.h: : let MADV_FREE have same value for all architectures")
Fixes: ef58978f1eaa ("mm: define MADV_FREE for some arches")
Signed-off-by: Guenter Roeck
Cc: Chen Gang
Cc: Minchan Kim
Acked-by: Helge Deller [parisc]
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
16 Jan, 2016
2 commits
-
For uapi, need try to let all macros have same value, and MADV_FREE is
added into main branch recently, so need redefine MADV_FREE for it.At present, '8' can be shared with all architectures, so redefine it to
'8'.[sudipm.mukherjee@gmail.com: correct uniform value of MADV_FREE]
Signed-off-by: Chen Gang
Signed-off-by: Minchan Kim
Acked-by: Hugh Dickins
Cc: Ralf Baechle
Cc: Arnd Bergmann
Cc: Richard Henderson
Cc: Ivan Kokshaysky
Cc: Matt Turner
Cc: "James E.J. Bottomley"
Cc: Helge Deller
Cc: Chris Zankel
Cc: Max Filippov
Cc: Roland Dreier
Cc: Darrick J. Wong
Cc: David S. Miller
Cc: "Kirill A. Shutemov"
Cc: Shaohua Li
Cc:
Cc: Andrea Arcangeli
Cc: Andy Lutomirski
Cc: Arnd Bergmann
Cc: Benjamin Herrenschmidt
Cc: Catalin Marinas
Cc: Daniel Micay
Cc: Jason Evans
Cc: Johannes Weiner
Cc: KOSAKI Motohiro
Cc: Kirill A. Shutemov
Cc: Mel Gorman
Cc: Michael Kerrisk
Cc: Michal Hocko
Cc: Mika Penttil
Cc: Rik van Riel
Cc: Russell King
Cc: Shaohua Li
Cc: Will Deacon
Cc: Wu Fengguang
Signed-off-by: Sudip Mukherjee
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Most architectures use asm-generic, but alpha, mips, parisc, xtensa need
their own definitions.This patch defines MADV_FREE for them so it should fix build break for
their architectures.Maybe, I should split and feed pieces to arch maintainers but included
here for mmotm convenience.[gang.chen.5i5j@gmail.com: let MADV_FREE have same value for all architectures]
Signed-off-by: Minchan Kim
Acked-by: Max Filippov
Cc: Wu Fengguang
Cc: Michael Kerrisk
Cc: Richard Henderson
Cc: Ivan Kokshaysky
Cc: "James E.J. Bottomley"
Cc: Helge Deller
Cc: Ralf Baechle
Cc: Chris Zankel
Cc: "Kirill A. Shutemov"
Cc: Shaohua Li
Cc:
Cc: Andrea Arcangeli
Cc: Andy Lutomirski
Cc: Arnd Bergmann
Cc: Benjamin Herrenschmidt
Cc: Catalin Marinas
Cc: Chen Gang
Cc: Daniel Micay
Cc: Darrick J. Wong
Cc: David S. Miller
Cc: Hugh Dickins
Cc: Jason Evans
Cc: Johannes Weiner
Cc: KOSAKI Motohiro
Cc: Kirill A. Shutemov
Cc: Matt Turner
Cc: Mel Gorman
Cc: Michal Hocko
Cc: Mika Penttil
Cc: Rik van Riel
Cc: Roland Dreier
Cc: Russell King
Cc: Shaohua Li
Cc: Will Deacon
Signed-off-by: Chen Gang
Acked-by: Hugh Dickins
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
15 Jan, 2016
1 commit
-
Pull livepatching updates from Jiri Kosina:
- RO/NX attribute fixes for patch module relocations from Josh
Poimboeuf. As part of this effort, module.c has been cleaned up as
well and livepatching is piggy-backing on this cleanup. Rusty is OK
with this whole lot going through livepatching tree.- symbol disambiguation support from Chris J Arges. That series is
alsoReviewed-by: Miroslav Benes
but this came in only after I've alredy pushed out. Didn't want to
rebase because of that, hence I am mentioning it here.- symbol lookup fix from Miroslav Benes
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/livepatching:
livepatch: Cleanup module page permission changes
module: keep percpu symbols in module's symtab
module: clean up RO/NX handling.
module: use a structure to encapsulate layout.
gcov: use within_module() helper.
module: Use the same logic for setting and unsetting RO/NX
livepatch: function,sympos scheme in livepatch sysfs directory
livepatch: add sympos as disambiguator field to klp_reloc
livepatch: add old_sympos as disambiguator field to klp_func
05 Jan, 2016
1 commit
-
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
Acked-by: Alexei Starovoitov
Signed-off-by: David S. Miller
05 Dec, 2015
1 commit
-
Makes it easier to handle init vs core cleanly, though the change is
fairly invasive across random architectures.It simplifies the rbtree code immediately, however, while keeping the
core data together in the same cachline (now iff the rbtree code is
enabled).Acked-by: Peter Zijlstra
Reviewed-by: Josh Poimboeuf
Signed-off-by: Rusty Russell
Signed-off-by: Jiri Kosina
06 Nov, 2015
1 commit
-
The previous patch introduced a flag that specified pages in a VMA should
be placed on the unevictable LRU, but they should not be made present when
the area is created. This patch adds the ability to set this state via
the new mlock system calls.We add MLOCK_ONFAULT for mlock2 and MCL_ONFAULT for mlockall.
MLOCK_ONFAULT will set the VM_LOCKONFAULT modifier for VM_LOCKED.
MCL_ONFAULT should be used as a modifier to the two other mlockall flags.
When used with MCL_CURRENT, all current mappings will be marked with
VM_LOCKED | VM_LOCKONFAULT. When used with MCL_FUTURE, the mm->def_flags
will be marked with VM_LOCKED | VM_LOCKONFAULT. When used with both
MCL_CURRENT and MCL_FUTURE, all current mappings and mm->def_flags will be
marked with VM_LOCKED | VM_LOCKONFAULT.Prior to this patch, mlockall() will unconditionally clear the
mm->def_flags any time it is called without MCL_FUTURE. This behavior is
maintained after adding MCL_ONFAULT. If a call to mlockall(MCL_FUTURE) is
followed by mlockall(MCL_CURRENT), the mm->def_flags will be cleared and
new VMAs will be unlocked. This remains true with or without MCL_ONFAULT
in either mlockall() invocation.munlock() will unconditionally clear both vma flags. munlockall()
unconditionally clears for VMA flags on all VMAs and in the mm->def_flags
field.Signed-off-by: Eric B Munson
Acked-by: Michal Hocko
Acked-by: Vlastimil Babka
Cc: Jonathan Corbet
Cc: Catalin Marinas
Cc: Geert Uytterhoeven
Cc: Guenter Roeck
Cc: Heiko Carstens
Cc: Kirill A. Shutemov
Cc: Michael Kerrisk
Cc: Ralf Baechle
Cc: Shuah Khan
Cc: Stephen Rothwell
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
20 Oct, 2015
1 commit
-
Signed-off-by: Ingo Molnar
07 Oct, 2015
1 commit
-
Both alpha and tile needed implementations of zero_bytemask.
The alpha version is untested.
Signed-off-by: Chris Metcalf
06 Oct, 2015
1 commit
-
Signed-off-by: Ingo Molnar
26 Sep, 2015
1 commit
-
Pull PCI fixes from Bjorn Helgaas:
"These are fixes for things we merged for v4.3 (VPD, MSI, and bridge
window management), and a new Renesas R8A7794 SoC device ID.Details:
Resource management:
- Revert pci_read_bridge_bases() unification (Bjorn Helgaas)
- Clear IORESOURCE_UNSET when clipping a bridge window (Bjorn
Helgaas)MSI:
- Fix MSI IRQ domains for VFs on virtual buses (Alex Williamson)Renesas R-Car host bridge driver:
- Add R8A7794 support (Sergei Shtylyov)Miscellaneous:
- Fix devfn for VPD access through function 0 (Alex Williamson)
- Use function 0 VPD only for identical functions (Alex Williamson)"* tag 'pci-v4.3-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
PCI: rcar: Add R8A7794 support
PCI: Use function 0 VPD for identical functions, regular VPD for others
PCI: Fix devfn for VPD access through function 0
PCI/MSI: Fix MSI IRQ domains for VFs on virtual buses
PCI: Clear IORESOURCE_UNSET when clipping a bridge window
PCI: Revert "PCI: Call pci_read_bridge_bases() from core instead of arch code"
23 Sep, 2015
1 commit
-
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)
Cc: Andrew Morton
Cc: Dmitry Vyukov
Cc: Linus Torvalds
Cc: Paul E. McKenney
Cc: Peter Zijlstra
Cc: Thomas Gleixner
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
18 Sep, 2015
3 commits
-
Pull irq updates from Thomas Gleixner:
"This is a rather large update post rc1 due to the final steps of
cleanups and API changes which had to wait for the preparatory patches
to hit your tree.- Regression fixes for ARM GIC irqchips
- Regression fixes and lockdep anotations for renesas irq chips
- The leftovers of the cleanup and preparatory patches which have
been ignored by maintainers- Final conversions of the newly merged users of obsolete APIs
- Final removal of obsolete APIs
- Final removal of ARM artifacts which had been introduced during the
conversion of ARM to the generic interrupt code.- Final split of the irq_data into chip specific and common data to
reflect the needs of hierarchical irq domains.- Treewide removal of the first argument of interrupt flow handlers,
i.e. the irq number, which is not used by the majority of handlers
and simple to retrieve from the other argument the irq descriptor.- A few comment updates and build warning fixes"
* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (40 commits)
arm64: Remove ununsed set_irq_flags
ARM: Remove ununsed set_irq_flags
sh: Kill off set_irq_flags usage
irqchip: Kill off set_irq_flags usage
gpu/drm: Kill off set_irq_flags usage
genirq: Remove irq argument from irq flow handlers
genirq: Move field 'msi_desc' from irq_data into irq_common_data
genirq: Move field 'affinity' from irq_data into irq_common_data
genirq: Move field 'handler_data' from irq_data into irq_common_data
genirq: Move field 'node' from irq_data into irq_common_data
irqchip/gic-v3: Use IRQD_FORWARDED_TO_VCPU flag
irqchip/gic: Use IRQD_FORWARDED_TO_VCPU flag
genirq: Provide IRQD_FORWARDED_TO_VCPU status flag
genirq: Simplify irq_data_to_desc()
genirq: Remove __irq_set_handler_locked()
pinctrl/pistachio: Use irq_set_handler_locked
gpio: vf610: Use irq_set_handler_locked
powerpc/mpc8xx: Use irq_set_handler_locked()
powerpc/ipic: Use irq_set_handler_locked()
powerpc/cpm2: Use irq_set_handler_locked()
... -
__delay was not exported as a result while building with allmodconfig we
were getting build error of undefined symbol. __delay is being used by:
drivers/net/phy/mdio-octeon.cSigned-off-by: Sudip Mukherjee
Cc: Richard Henderson
Cc: Ivan Kokshaysky
Cc: Matt Turner
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
ioremap_uc was not defined and as a result while building with
allmodconfig were getting build error of: implicit declaration of
function 'ioremap_uc'.Signed-off-by: Sudip Mukherjee
Cc: Richard Henderson
Cc: Ivan Kokshaysky
Cc: Matt Turner
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
16 Sep, 2015
2 commits
-
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
Cc: Julia Lawall
Cc: Jiang Liu -
Revert dff22d2054b5 ("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
d65245c3297a ("PCI: don't shrink bridge resources")). Prior to
dff22d2054b5, ARM didn't read bridge windows at all, so the "original size"
was zero, and we assigned a 3MB window.After dff22d2054b5, 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 dff22d2054b5.
Reported-by: Hannes
Reported-by: Ray Jui
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
Acked-by: Yinghai Lu
Acked-by: Lorenzo Pieralisi
11 Sep, 2015
5 commits
-
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
Cc: Arnd Bergmann
Cc: Russell King
Cc: Catalin Marinas
Cc: Will Deacon
Cc: Yoshinori Sato
Cc: Michal Simek
Cc: Jonas Bonn
Cc: Chris Metcalf
Cc: Guan Xuetao
Cc: Ralf Baechle
Cc: Benjamin Herrenschmidt
Cc: Ingo Molnar
Cc: Thomas Gleixner
Cc: "H. Peter Anvin"
Cc: Andy Shevchenko
Signed-off-by: Max Filippov
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
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
Cc: Arnd Bergmann
Cc: Russell King
Cc: Catalin Marinas
Cc: Will Deacon
Cc: Yoshinori Sato
Cc: Michal Simek
Cc: Jonas Bonn
Cc: Chris Metcalf
Cc: Guan Xuetao
Cc: Ralf Baechle
Cc: Benjamin Herrenschmidt
Cc: Ingo Molnar
Cc: Thomas Gleixner
Cc: "H. Peter Anvin"
Cc: Andy Shevchenko
Signed-off-by: Max Filippov
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Currently there are three valid implementations of dma_mapping_error:
(1) call ->mapping_error
(2) check for a hardcoded error code
(3) always return 0This 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
Cc: Arnd Bergmann
Cc: Russell King
Cc: Catalin Marinas
Cc: Will Deacon
Cc: Yoshinori Sato
Cc: Michal Simek
Cc: Jonas Bonn
Cc: Chris Metcalf
Cc: Guan Xuetao
Cc: Ralf Baechle
Cc: Benjamin Herrenschmidt
Cc: Ingo Molnar
Cc: Thomas Gleixner
Cc: "H. Peter Anvin"
Cc: Andy Shevchenko
Signed-off-by: Max Filippov
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
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
Cc: Arnd Bergmann
Cc: Russell King
Cc: Catalin Marinas
Cc: Will Deacon
Cc: Yoshinori Sato
Cc: Michal Simek
Cc: Jonas Bonn
Cc: Chris Metcalf
Cc: Guan Xuetao
Cc: Ralf Baechle
Cc: Benjamin Herrenschmidt
Cc: Ingo Molnar
Cc: Thomas Gleixner
Cc: "H. Peter Anvin"
Cc: Andy Shevchenko
Signed-off-by: Max Filippov
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
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
Cc: Arnd Bergmann
Cc: Russell King
Cc: Catalin Marinas
Cc: Will Deacon
Cc: Yoshinori Sato
Cc: Michal Simek
Cc: Jonas Bonn
Cc: Chris Metcalf
Cc: Guan Xuetao
Cc: Ralf Baechle
Cc: Benjamin Herrenschmidt
Cc: Ingo Molnar
Cc: Thomas Gleixner
Cc: "H. Peter Anvin"
Cc: Andy Shevchenko
Signed-off-by: Guenter Roeck
Signed-off-by: Max Filippov
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
04 Sep, 2015
1 commit
-
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
...
02 Sep, 2015
2 commits
-
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
... -
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
...
01 Sep, 2015
2 commits
-
Pull NOHZ updates from Ingo Molnar:
"The main changes, mostly written by Frederic Weisbecker, include:- Fix some jiffies based cputime assumptions. (No real harm because
the concerned code isn't used by full dynticks.)- Simplify jiffies usecs conversions. Remove dead code.
- Remove early hacks on nohz full code that avoided messing up idle
nohz internals. Now nohz integrates well full and idle and such
hack have become needless.- Restart nohz full tick from irq exit. (A simplification and a
preparation for future optimization on scheduler kick to nohz
full)- Code cleanups.
- Tile driver isolation enhancement on top of nohz. (Chris Metcalf)"
* 'timers-nohz-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
nohz: Remove useless argument on tick_nohz_task_switch()
nohz: Move tick_nohz_restart_sched_tick() above its users
nohz: Restart nohz full tick from irq exit
nohz: Remove idle task special case
nohz: Prevent tilegx network driver interrupts
alpha: Fix jiffies based cputime assumption
apm32: Fix cputime == jiffies assumption
jiffies: Remove HZ > USEC_PER_SEC special case -
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
...
31 Aug, 2015
1 commit
-
On Alpha we have spinlocks that are 32b in size and an efficient
cmpxchg64 implementation, so we qualify to make use of cmpxchg backed
lockrefs. Select the ARCH_USE_CMPXCHG_LOCKREF Kconfig symbol and provide
a trivial implementation of arch_spin_value_unlocked to satisfy the
lockref code.Using Linus' simple testcase from
http://article.gmane.org/gmane.linux.file-systems/77466 on a dual CPU
ES47 system I see around an 8% gain:N Min Max Median Avg Stddev
x 30 6194580 6295654 6272504 6272514 17694.232
+ 30 6731164 6786334 6767982 6764274 13738.863
Difference at 95.0% confidence
491760 +/- 8188.17
7.83992% +/- 0.130541%
(Student's t, pooled s = 15840.5)Signed-off-by: Matt Turner
10 Aug, 2015
1 commit
-
Migrate alpha 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.rtc clockevent device wasn't doing anything in set-mode and so its
set-state callbacks aren't implemented.Cc: Richard Henderson
Cc: Ivan Kokshaysky
Cc: Matt Turner
Cc: Christoph Lameter
Cc: linux-alpha@vger.kernel.org
Signed-off-by: Viresh Kumar
Signed-off-by: Daniel Lezcano
30 Jul, 2015
1 commit
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Pull in upstream fixes before applying conflicting changes
29 Jul, 2015
1 commit
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That code wrongly assumes that cputime_t wraps jiffies_t. Lets use
the correct accessors/mutators.In practice there should be no harm yet because alpha currently
only support tick based cputime accounting which is always jiffies
based.Reviewed-by: Rik van Riel
Cc: Richard Henderson
Cc: Ivan Kokshaysky
Cc: Christoph Lameter
Cc: Ingo Molnar
Cc; John Stultz
Cc: Peter Zijlstra
Cc: Preeti U Murthy
Cc: Rik van Riel
Cc: Thomas Gleixner
Cc: Viresh Kumar
Signed-off-by: Frederic Weisbecker
27 Jul, 2015
3 commits
-
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)
Signed-off-by: Thomas Gleixner -
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)
Signed-off-by: Thomas Gleixner -
This is a preparatory patch for moving irq_data struct members.
Signed-off-by: Jiang Liu
Cc: Matt Turner
Link: http://lkml.kernel.org/r/20150713075508.821878421@linutronix.de
Signed-off-by: Thomas Gleixner
23 Jul, 2015
1 commit
-
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
Signed-off-by: Bjorn Helgaas
CC: Ralf Baechle
CC: James E.J. Bottomley
CC: Michael Ellerman
CC: Bjorn Helgaas
CC: Richard Henderson
CC: Benjamin Herrenschmidt
CC: David Howells
CC: Russell King
CC: Tony Luck
CC: David S. Miller
CC: Ingo Molnar
CC: Guenter Roeck
CC: Michal Simek
CC: Chris Zankel
18 Jul, 2015
1 commit
-
Commit 2ae416b142b6 ("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
Suggested-by: Geert Uytterhoeven
Acked-by: Geert Uytterhoeven
Acked-by: Vineet Gupta
Cc: Oleg Nesterov
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
27 Jun, 2015
1 commit
-
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
...
26 Jun, 2015
1 commit
-
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
25 Jun, 2015
1 commit
-
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
Suggested-by: Andrew Morton
Cc: "Kirill A. Shutemov"
Cc: Hugh Dickins
Cc: Rik van Riel
Cc: Mel Gorman
Cc: Pavel Emelyanov
Cc: Benjamin Herrenschmidt
Cc: Paul Mackerras
Cc: Michael Ellerman
Cc: Ingo Molnar
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds