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 -
Signed-off-by: Christoph Hellwig
Cc: Haavard Skinnemoen
Cc: Hans-Christian Egtvedt
Cc: Christian Borntraeger
Cc: Joerg Roedel
Cc: Sebastian Ott
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
19 Jan, 2016
1 commit
-
Pull AVR32 updates from Hans-Christian Noren Egtvedt.
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/egtvedt/linux-avr32:
mmc: atmel: get rid of struct mci_dma_data
mmc: atmel-mci: restore dma on AVR32
avr32: wire up missing syscalls
avr32: wire up accept4 syscall
18 Jan, 2016
2 commits
-
Merge second patch-bomb from Andrew Morton:
- more MM stuff:
- Kirill's page-flags rework
- Kirill's now-allegedly-fixed THP rework
- MADV_FREE implementation
- DAX feature work (msync/fsync). This isn't quite complete but DAX
is new and it's good enough and the guys have a handle on what
needs to be done - I expect this to be wrapped in the next week or
two.- some vsprintf maintenance work
- various other misc bits
* emailed patches from Andrew Morton : (145 commits)
printk: change recursion_bug type to bool
lib/vsprintf: factor out %pN[F] handler as netdev_bits()
lib/vsprintf: refactor duplicate code to special_hex_number()
printk-formats.txt: remove unimplemented %pT
printk: help pr_debug and pr_devel to optimize out arguments
lib/test_printf.c: test dentry printing
lib/test_printf.c: add test for large bitmaps
lib/test_printf.c: account for kvasprintf tests
lib/test_printf.c: add a few number() tests
lib/test_printf.c: test precision quirks
lib/test_printf.c: check for out-of-bound writes
lib/test_printf.c: don't BUG
lib/kasprintf.c: add sanity check to kvasprintf
lib/vsprintf.c: warn about too large precisions and field widths
lib/vsprintf.c: help gcc make number() smaller
lib/vsprintf.c: expand field_width to 24 bits
lib/vsprintf.c: eliminate potential race in string()
lib/vsprintf.c: move string() below widen_string()
lib/vsprintf.c: pull out padding code from dentry_name()
printk: do cond_resched() between lines while outputting to consoles
... -
Pull GPIO updates from Linus Walleij:
"Here is the bulk of GPIO changes for v4.5.Notably there are big refactorings mostly by myself, aimed at getting
the gpio_chip into a shape that makes me believe I can proceed to
preserve state for a proper userspace ABI (character device) that has
already been proposed once, but resulted in the feedback that I need
to go back and restructure stuff. So I've been restructuring stuff.
On the way I ran into brokenness (return code from the get_value()
callback) and had to fix it. Also, refactored generic GPIO to be
simpler.Some of that is still waiting to trickle down from the subsystems all
over the kernel that provide random gpio_chips, I've touched every
single GPIO driver in the kernel now, oh man I didn't know I was
responsible for so much...Apart from that we're churning along as usual.
I took some effort to test and retest so it should merge nicely and we
shook out a couple of bugs in -next.Infrastructural changes:
- In struct gpio_chip, rename the .dev node to .parent to better
reflect the fact that this is not the GPIO struct device
abstraction. We will add that soon so this would be totallt
confusing.- It was noted that the driver .get_value() callbacks was sometimes
reporting negative -ERR values to the gpiolib core, expecting them
to be propagated to consumer gpiod_get_value() and gpio_get_value()
calls. This was not happening, so as there was a mess of drivers
returning negative errors and some returning "anything else than
zero" to indicate that a line was active. As some would have bit
31 set to indicate "line active" it clashed with negative error
codes. This is fixed by the largeish series clamping values in all
drivers with !!value to [0,1] and then augmenting the code to
propagate error codes to consumers. (Includes some ACKed patches
in other subsystems.)- Add a void *data pointer to struct gpio_chip. The container_of()
design pattern is indeed very nice, but we want to reform the
struct gpio_chip to be a non-volative, stateless business, and keep
states internal to the gpiolib to be able to hold on to the state
when adding a proper userspace ABI (character device) further down
the road. To achieve this, drivers need a handle at the internal
state that is not dependent on their struct gpio_chip() so we add
gpiochip_add_data() and gpiochip_get_data() following the pattern
of many other subsystems. All the "use gpiochip data pointer"
patches transforms drivers to this scheme.- The Generic GPIO chip header has been merged into the general
header, and the custom header for that
removed. Instead of having a separate mm_gpio_chip struct for
these generic drivers, merge that into struct gpio_chip,
simplifying the code and removing the need for separate and
confusing includes.Misc improvements:
- Stabilize the way GPIOs are looked up from the ACPI legacy
specification.- Incremental driver features for PXA, PCA953X, Lantiq (patches from
the OpenWRT community), RCAR, Zynq, PL061, 104-idi-48New drivers:
- Add a GPIO chip to the ALSA SoC AC97 driver.
- Add a new Broadcom NSP SoC driver (this lands in the pinctrl dir,
but the branch is merged here too to account for infrastructural
changes).- The sx150x driver now supports the sx1502"
* tag 'gpio-v4.5-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: (220 commits)
gpio: generic: make bgpio_pdata always visible
gpiolib: fix chip order in gpio list
gpio: mpc8xxx: Do not use gpiochip_get_data() in mpc8xxx_gpio_save_regs()
gpio: mm-lantiq: Do not use gpiochip_get_data() in ltq_mm_save_regs()
gpio: brcmstb: Allow building driver for BMIPS_GENERIC
gpio: brcmstb: Set endian flags for big-endian MIPS
gpio: moxart: fix build regression
gpio: xilinx: Do not use gpiochip_get_data() in xgpio_save_regs()
leds: pca9532: use gpiochip data pointer
leds: tca6507: use gpiochip data pointer
hid: cp2112: use gpiochip data pointer
bcma: gpio: use gpiochip data pointer
avr32: gpio: use gpiochip data pointer
video: fbdev: via: use gpiochip data pointer
gpio: pch: Optimize pch_gpio_get()
Revert "pinctrl: lantiq: Implement gpio_chip.to_irq"
pinctrl: nsp-gpio: use gpiochip data pointer
pinctrl: vt8500-wmt: use gpiochip data pointer
pinctrl: exynos5440: use gpiochip data pointer
pinctrl: at91-pio4: use gpiochip data pointer
...
16 Jan, 2016
1 commit
-
Switch avr32/include/asm/page.h to use the common defintions for
pfn_to_page(), page_to_pfn(), and ARCH_PFN_OFFSET.Signed-off-by: Dan Williams
Cc: Haavard Skinnemoen
Cc: Hans-Christian Egtvedt
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
14 Jan, 2016
2 commits
-
As struct mci_dma_data is now only used by AVR32, it is nothing but
pointless indirection. Replace it with struct dw_dma_slave in the
AVR32 platform code and with a void pointer elsewhere.Signed-off-by: Mans Rullgard
Acked-by: Hans-Christian Noren Egtvedt
Acked-by: Ludovic Desroches
Acked-by: Ulf Hansson -
Commit ecb89f2f5f3e7 ("mmc: atmel-mci: remove compat for non DT board
when requesting dma chan") broke dma on AVR32 and any other boards not
using DT. This restores a fallback mechanism for such cases.Signed-off-by: Mans Rullgard
Acked-by: Hans-Christian Noren Egtvedt
Acked-by: Ludovic Desroches
Acked-by: Ulf Hansson
11 Jan, 2016
2 commits
-
This patch adds three missing syscalls to AVR32:
__NR_userfaultfd
__NR_membarrier
__NR_mlock2Signed-off-by: Hans-Christian Egtvedt
-
The accept4 syscall is missing on AVR32. Fix this.
Signed-off-by: Mans Rullgard
Acked-by: Hans-Christian Noren Egtvedt
07 Jan, 2016
1 commit
-
This makes the driver use the data pointer added to the gpio_chip
to store a pointer to the state container instead of relying on
container_of().Cc: Haavard Skinnemoen
Acked-by: Hans-Christian Noren Egtvedt
Signed-off-by: Linus Walleij
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
19 Nov, 2015
1 commit
-
The name .dev in a struct is normally reserved for a struct device
that is let us say a superclass to the thing described by the struct.
struct gpio_chip stands out by confusingly using a struct device *dev
to point to the parent device (such as a platform_device) that
represents the hardware. As we want to give gpio_chip:s real devices,
this is not working. We need to rename this member to parent.This was done by two coccinelle scripts, I guess it is possible to
combine them into one, but I don't know such stuff. They look like
this:@@
struct gpio_chip *var;
@@
-var->dev
+var->parentand:
@@
struct gpio_chip var;
@@
-var.dev
+var.parentand:
@@
struct bgpio_chip *var;
@@
-var->gc.dev
+var->gc.parentPlus a few instances of bgpio that I couldn't figure out how
to teach Coccinelle to rewrite.This patch hits all over the place, but I *strongly* prefer this
solution to any piecemal approaches that just exercise patch
mechanics all over the place. It mainly hits drivers/gpio and
drivers/pinctrl which is my own backyard anyway.Cc: Haavard Skinnemoen
Cc: Rafał Miłecki
Cc: Richard Purdie
Cc: Mauro Carvalho Chehab
Cc: Alek Du
Cc: Jaroslav Kysela
Cc: Takashi Iwai
Acked-by: Dmitry Torokhov
Acked-by: Greg Kroah-Hartman
Acked-by: Lee Jones
Acked-by: Jiri Kosina
Acked-by: Hans-Christian Egtvedt
Acked-by: Jacek Anaszewski
Signed-off-by: Linus Walleij
11 Nov, 2015
1 commit
-
Pull dmaengine updates from Vinod Koul:
"This time we have a very typical update which is mostly fixes and
updates to drivers and no new drivers.- the biggest change is coming from Peter for edma cleanup which even
caused some last minute regression, things seem settled now
- idma64 and dw updates
- iotdma updates
- module autoload fixes for various drivers
- scatter gather support for hdmac"* tag 'dmaengine-4.4-rc1' of git://git.infradead.org/users/vkoul/slave-dma: (77 commits)
dmaengine: edma: Add dummy driver skeleton for edma3-tptc
Revert "ARM: DTS: am33xx: Use the new DT bindings for the eDMA3"
Revert "ARM: DTS: am437x: Use the new DT bindings for the eDMA3"
dmaengine: dw: some Intel devices has no memcpy support
dmaengine: dw: platform: provide platform data for Intel
dmaengine: dw: don't override platform data with autocfg
dmaengine: hdmac: Add scatter-gathered memset support
dmaengine: hdmac: factorise memset descriptor allocation
dmaengine: virt-dma: Fix kernel-doc annotations
ARM: DTS: am437x: Use the new DT bindings for the eDMA3
ARM: DTS: am33xx: Use the new DT bindings for the eDMA3
dmaengine: edma: New device tree binding
dmaengine: Kconfig: edma: Select TI_DMA_CROSSBAR in case of ARCH_OMAP
dmaengine: ti-dma-crossbar: Add support for crossbar on AM33xx/AM43xx
dmaengine: edma: Merge the of parsing functions
dmaengine: edma: Do not allocate memory for edma_rsv_info in case of DT boot
dmaengine: edma: Refactor the dma device and channel struct initialization
dmaengine: edma: Get qDMA channel information from HW also
dmaengine: edma: Merge map_dmach_to_queue into assign_channel_eventq
dmaengine: edma: Correct PaRAM access function names (_parm_ to _param_)
...
04 Nov, 2015
1 commit
-
Pull locking changes from Ingo Molnar:
"The main changes in this cycle were:- More gradual enhancements to atomic ops: new atomic*_read_ctrl()
ops, synchronize atomic_{read,set}() ordering requirements between
architectures, add atomic_long_t bitops. (Peter Zijlstra)- Add _{relaxed|acquire|release}() variants for inc/dec atomics and
use them in various locking primitives: mutex, rtmutex, mcs, rwsem.
This enables weakly ordered architectures (such as arm64) to make
use of more locking related optimizations. (Davidlohr Bueso)- Implement atomic[64]_{inc,dec}_relaxed() on ARM. (Will Deacon)
- Futex kernel data cache footprint micro-optimization. (Rasmus
Villemoes)- pvqspinlock runtime overhead micro-optimization. (Waiman Long)
- misc smaller fixlets"
* 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
ARM, locking/atomics: Implement _relaxed variants of atomic[64]_{inc,dec}
locking/rwsem: Use acquire/release semantics
locking/mcs: Use acquire/release semantics
locking/rtmutex: Use acquire/release semantics
locking/mutex: Use acquire/release semantics
locking/asm-generic: Add _{relaxed|acquire|release}() variants for inc/dec atomics
atomic: Implement atomic_read_ctrl()
atomic, arch: Audit atomic_{read,set}()
atomic: Add atomic_long_t bitops
futex: Force hot variables into a single cache line
locking/pvqspinlock: Kick the PV CPU unconditionally when _Q_SLOW_VAL
locking/osq: Relax atomic semantics
locking/qrwlock: Rename ->lock to ->wait_lock
locking/Documentation/lockstat: Fix typo - lokcing -> locking
locking/atomics, cmpxchg: Privatize the inclusion of asm/cmpxchg.h
03 Nov, 2015
1 commit
-
Signed-off-by: Alexandre Belloni
Acked-by: Hans-Christian Egtvedt
06 Oct, 2015
1 commit
-
Signed-off-by: Ingo Molnar
04 Oct, 2015
1 commit
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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
30 Sep, 2015
1 commit
-
Instead of hardcoding a platform data for dw_dmac let's use it's own
autoconfiguration feature. Thus, remove hardcoded values.Tested on ATNGW100.
Acked-by: Hans-Christian Egtvedt
Signed-off-by: Andy Shevchenko
Signed-off-by: Vinod Koul
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
16 Sep, 2015
1 commit
-
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
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 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
...
01 Sep, 2015
1 commit
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Pull scheduler updates from Ingo Molnar:
"The biggest change in this cycle is the rewrite of the main SMP load
balancing metric: the CPU load/utilization. The main goal was to make
the metric more precise and more representative - see the changelog of
this commit for the gory details:9d89c257dfb9 ("sched/fair: Rewrite runnable load and utilization average tracking")
It is done in a way that significantly reduces complexity of the code:
5 files changed, 249 insertions(+), 494 deletions(-)
and the performance testing results are encouraging. Nevertheless we
need to keep an eye on potential regressions, since this potentially
affects every SMP workload in existence.This work comes from Yuyang Du.
Other changes:
- SCHED_DL updates. (Andrea Parri)
- Simplify architecture callbacks by removing finish_arch_switch().
(Peter Zijlstra et al)- cputime accounting: guarantee stime + utime == rtime. (Peter
Zijlstra)- optimize idle CPU wakeups some more - inspired by Facebook server
loads. (Mike Galbraith)- stop_machine fixes and updates. (Oleg Nesterov)
- Introduce the 'trace_sched_waking' tracepoint. (Peter Zijlstra)
- sched/numa tweaks. (Srikar Dronamraju)
- misc fixes and small cleanups"
* 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (44 commits)
sched/deadline: Fix comment in enqueue_task_dl()
sched/deadline: Fix comment in push_dl_tasks()
sched: Change the sched_class::set_cpus_allowed() calling context
sched: Make sched_class::set_cpus_allowed() unconditional
sched: Fix a race between __kthread_bind() and sched_setaffinity()
sched: Ensure a task has a non-normalized vruntime when returning back to CFS
sched/numa: Fix NUMA_DIRECT topology identification
tile: Reorganize _switch_to()
sched, sparc32: Update scheduler comments in copy_thread()
sched: Remove finish_arch_switch()
sched, tile: Remove finish_arch_switch
sched, sh: Fold finish_arch_switch() into switch_to()
sched, score: Remove finish_arch_switch()
sched, avr32: Remove finish_arch_switch()
sched, MIPS: Get rid of finish_arch_switch()
sched, arm: Remove finish_arch_switch()
sched/fair: Clean up load average references
sched/fair: Provide runnable_load_avg back to cfs_rq
sched/fair: Remove task and group entity load when they are dead
sched/fair: Init cfs_rq's sched_entity load average
...
25 Aug, 2015
1 commit
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Signed-off-by: Ingo Molnar
12 Aug, 2015
1 commit
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Signed-off-by: Ingo Molnar
04 Aug, 2015
1 commit
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Fold the tracing hook into switch_to() in order to remove
finish_arch_switch().Signed-off-by: Peter Zijlstra (Intel)
Acked-by: Hans-Christian Egtvedt
Cc: Linus Torvalds
Cc: Mike Galbraith
Cc: Peter Zijlstra
Cc: Thomas Gleixner
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar
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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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
Signed-off-by: Luis R. Rodriguez
Cc: Abhilash Kesavan
Cc: Benjamin Herrenschmidt
Cc: Borislav Petkov
Cc: Chris Metcalf
Cc: David Howells
Cc: Fengguang Wu
Cc: Geert Uytterhoeven
Cc: Greg Kroah-Hartman
Cc: Greg Ungerer
Cc: Guenter Roeck
Cc: Haavard Skinnemoen
Cc: Hans-Christian Egtvedt
Cc: Koichi Yasutake
Cc: Kyle McMartin
Cc: Linus Torvalds
Cc: Michael Ellerman
Cc: Paul Mackerras
Cc: Peter Hurley
Cc: Peter Zijlstra
Cc: Rob Herring
Cc: Thomas Gleixner
Cc: Toshi Kani
Cc: Will Deacon
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
27 Jul, 2015
3 commits
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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 -
Since NULL is used as valid clock object on optional clocks we have to handle
this case in avr32 implementation as well.Fixes: e1824dfe0d8e (net: macb: Adjust tx_clk when link speed changes)
Signed-off-by: Andy Shevchenko
Acked-by: Hans-Christian Egtvedt
26 Jul, 2015
3 commits
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Use irq_desc_get_xxx() to avoid redundant lookup of irq_desc while we
already have a pointer to corresponding irq_desc.Signed-off-by: Jiang Liu
Acked-by: Hans-Christian Egtvedt
Cc: Haavard Skinnemoen
Link: http://lkml.kernel.org/r/20150713100606.527106283@linutronix.de
Signed-off-by: Thomas Gleixner -
Use irq_set_handler_locked() as it avoids a redundant lookup of the
irq descriptor.Search and replacement was done with coccinelle.
Signed-off-by: Thomas Gleixner
Acked-by: Hans-Christian Egtvedt
Cc: Haavard Skinnemoen
Cc: Jiang Liu
Cc: Julia Lawall
Link: http://lkml.kernel.org/r/20150713100606.448031045@linutronix.de
Signed-off-by: Thomas Gleixner -
Chained irq handlers usually set up handler data as well. We now have
a function to set both under irq_desc->lock. Replace the two calls
with one.Search and conversion was done with coccinelle.
Reported-by: Russell King
Signed-off-by: Thomas Gleixner
Acked-by: Hans-Christian Egtvedt
Cc: Haavard Skinnemoen
Cc: Jiang Liu
Cc: Julia Lawall
Link: http://lkml.kernel.org/r/20150713100606.351640193@linutronix.de
Signed-off-by: Thomas Gleixner
20 Jul, 2015
1 commit
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Migrate avr32 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 want to call cpu_idle_poll_ctrl() in shutdown only if we were in
oneshot or resume state earlier. Create another variable to save this
information and check that in shutdown callback.Cc: Haavard Skinnemoen
Cc: Hans-Christian Egtvedt
Signed-off-by: Viresh Kumar
Acked-by: Hans-Christian Egtvedt
18 Jul, 2015
1 commit
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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
