Lars-Peter Clausen
670b19ae9b
iio: Add generic DMA buffer infrastructure ...
The traditional approach used in IIO to implement buffered capture requires
the generation of at least one interrupt per sample. In the interrupt
handler the driver reads the sample from the device and copies it to a
software buffer. This approach has a rather large per sample overhead
associated with it. And while it works fine for samplerates in the range of
up to 1000 samples per second it starts to consume a rather large share of
the available CPU processing time once we go beyond that, this is
especially true on an embedded system with limited processing power. The
regular interrupt also causes increased power consumption by not allowing
the hardware into deeper sleep states, which is something that becomes more
and more important on mobile battery powered devices.
And while the recently added watermark support mitigates some of the issues
by allowing the device to generate interrupts at a rate lower than the data
output rate, this still requires a storage buffer inside the device and
even if it exists it is only a few 100 samples deep at most.
DMA support on the other hand allows to capture multiple millions or even
more samples without any CPU interaction. This allows the CPU to either go
to sleep for longer periods or focus on other tasks which increases overall
system performance and power consumption. In addition to that some devices
might not even offer a way to read the data other than using DMA, which
makes DMA mandatory to use for them.
The tasks involved in implementing a DMA buffer can be divided into two
categories. The first category is memory buffer management (allocation,
mapping, etc.) and hooking this up the IIO buffer callbacks like read(),
enable(), disable(), etc. The second category of tasks is to setup the
DMA hardware and manage the DMA transfers. Tasks from the first category
will be very similar for all IIO drivers supporting DMA buffers, while the
tasks from the second category will be hardware specific.
This patch implements a generic infrastructure that take care of the former
tasks. It provides a set of functions that implement the standard IIO
buffer iio_buffer_access_funcs callbacks. These can either be used as is or
be overloaded and augmented with driver specific code where necessary.
For the DMA buffer support infrastructure that is introduced in this series
sample data is grouped by so called blocks. A block is the basic unit at
which data is exchanged between the application and the hardware. The
application is responsible for allocating the memory associated with the
block and then passes the block to the hardware. When the hardware has
captured the amount of samples equal to size of a block it will notify the
application, which can then read the data from the block and process it.
The block size can freely chosen (within the constraints of the hardware).
This allows to make a trade-off between latency and management overhead.
The larger the block size the lower the per sample overhead but the latency
between when the data was captured and when the application will be able to
access it increases, in a similar way smaller block sizes have a larger per
sample management overhead but a lower latency. The ideal block size thus
depends on system and application requirements.
For the time being the infrastructure only implements a simple double
buffered scheme which allocates two blocks each with half the size of the
configured buffer size. This provides basic support for capturing
continuous uninterrupted data over the existing file-IO ABI. Future
extensions to the DMA buffer infrastructure will give applications a more
fine grained control over how many blocks are allocated and the size of
each block. But this requires userspace ABI additions which are
intentionally not part of this patch and will be added separately.
Tasks of the second category need to be implemented by a device specific
driver. They can be hooked up into the generic infrastructure using two
simple callbacks, submit() and abort().
The submit() callback is used to schedule DMA transfers for blocks. Once a
DMA transfer has been completed it is expected that the buffer driver calls
iio_dma_buffer_block_done() to notify. The abort() callback is used for
stopping all pending and active DMA transfers when the buffer is disabled.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-10-25 13:54:34 +00:00
Revert "uart: pl011: Add support to ZTE ZX296702 uart"
2015-09-04 09:14:20 -07:00
bcma: switch GPIO portions to use GPIOLIB_IRQCHIP
2015-08-18 09:08:47 +03:00
can: replace timestamp as unique skb attribute
2015-07-12 21:13:22 +02:00
libceph: advertise support for keepalive2
2015-09-17 20:14:27 +03:00
ARM: SoC driver updates for v4.3
2015-09-01 13:00:04 -07:00
crush: sync up with userspace
2015-06-25 11:49:31 +03:00
dmaengine: pxa: add pxa dmaengine driver
2015-05-26 09:18:29 +05:30
extcon: Use the unique id for external connector instead of string
2015-05-22 18:58:44 +09:00
fsl /bestcomm
Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux
2015-09-04 15:49:32 -07:00
Input: atmel_mxt_ts - use deep sleep mode when stopped
2015-08-04 17:03:52 -07:00
iio: Add generic DMA buffer infrastructure
2015-10-25 13:54:34 +00:00
Input: pixcir_i2c_ts - move platform data
2015-07-11 17:27:36 -07:00
ARM:
2015-09-10 16:42:49 -07:00
iio:adc: add iio driver for Palmas (twl6035/7) gpadc
2015-10-25 12:02:41 +00:00
Changes for 4.3
2015-09-09 08:33:31 -07:00
IB/mlx5: Remove support for IB_DEVICE_LOCAL_DMA_LKEY
2015-09-25 10:46:51 -04:00
mmc: block: skip trim for some kingston eMMCs
2015-08-27 14:50:52 +02:00
arch, drivers: don't include <asm/io.h> directly, use <linux/io.h> instead
2015-08-10 23:07:05 -04:00
netfilter: nf_conntrack: make nf_ct_zone_dflt built-in
2015-09-02 16:32:56 -07:00
netfilter: Pass nf_hook_state through arpt_do_table().
2015-04-04 13:26:52 -04:00
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
2015-06-23 14:08:54 -07:00
netfilter: Pass nf_hook_state through ipt_do_table().
2015-04-04 12:47:04 -04:00
netfilter: Pass nf_hook_state through ip6t_do_table().
2015-04-04 12:52:06 -04:00
arm: perf: factor arm_pmu core out to drivers
2015-07-31 15:01:14 +01:00
phy: for 4.2 merge window
2015-06-03 14:13:41 +09:00
pinctrl: use "const struct ..." rather than "struct ... const"
2015-06-01 15:48:12 +02:00
MMC core:
2015-09-08 16:33:16 -07:00
power: max17042_battery: add HEALTH and TEMP_* properties support
2015-05-23 22:43:28 +02:00
md/raid6 algorithms: delta syndrome functions
2015-04-22 08:00:41 +10:00
Merge remote-tracking branches 'regulator/topic/qcom-smd', 'regulator/topic/qcom-spmi', 'regulator/topic/rk808', 'regulator/topic/stub' and 'regulator/topic/tol' into regulator-next
2015-08-30 14:40:11 +01:00
ARM: BCM63xx: Add Broadcom BCM63xx PMB controller helpers
2015-05-20 15:05:39 -07:00
ARM: prima2: move to use REGMAP APIs for rtciobrg
2015-06-10 15:10:26 +08:00
timer: Reduce timer migration overhead if disabled
2015-06-19 15:18:28 +02:00
ARM: SoC driver updates for v4.3
2015-09-01 13:00:04 -07:00
spi: fix kernel-doc warnings in spi.h
2015-09-16 20:44:47 +01:00
MIPS: BCM47xx: Extract info about et2 interface
2015-06-21 21:52:24 +02:00
SUNRPC: Ensure that we wait for connections to complete before retrying
2015-09-17 18:01:28 -04:00
usb: add bus type for USB ULPI
2015-05-13 12:04:55 -05:00
usb: renesas_usbhs: fix build warning if 64-bit architecture
2015-09-30 11:21:03 -05:00
include/linux: remove empty conditionals
2015-04-15 16:35:22 -07:00
ACPI, PCI, irq: Do not share PCI IRQ with ISA IRQ
2015-09-26 01:53:07 +02:00
alarmtimer: Get rid of unused return value
2015-04-22 17:06:52 +02:00
ASN.1: Handle 'ANY OPTIONAL' in grammar
2015-08-05 13:38:07 +01:00
md/raid5: activate raid6 rmw feature
2015-04-22 08:00:42 +10:00
Revert "libata: Implement NCQ autosense"
2015-08-03 12:01:54 -04:00
tty/serial: at91: add support to FIFOs
2015-07-23 18:00:42 -07:00
locking/atomics: Add _{acquire|release|relaxed}() variants of some atomic operations
2015-08-12 11:58:59 +02:00
audit: implement audit by executable
2015-08-06 16:17:25 -04:00
average: remove out-of-line implementation
2015-08-20 14:10:23 -07:00
writeback: don't embed root bdi_writeback_congested in bdi_writeback
2015-07-02 08:46:00 -06:00
cgroup, writeback: don't enable cgroup writeback on traditional hierarchies
2015-09-24 16:48:52 -04:00
backlight: Change the return type of backlight_update_status() to int
2015-06-23 15:47:35 +01:00
gpio: generic: support input-only chips
2015-07-27 15:01:05 +02:00
MIPS: BCM47xx: Move NVRAM driver to the drivers/firmware/
2015-06-21 21:55:33 +02:00
block: Replace SG_GAPS with new queue limits mask
2015-08-19 14:26:02 -07:00
linux/bitmap: Force inlining of bitmap weight functions
2015-08-05 09:38:08 +02:00
linux/bitmap: Force inlining of bitmap weight functions
2015-08-05 09:38:08 +02:00
blkcg: use CGROUP_WEIGHT_* scale for io.weight on the unified hierarchy
2015-08-18 15:49:36 -07:00
blk-mq: factor out a helper to iterate all tags for a request_queue
2015-10-01 10:10:57 +02:00
Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
2015-09-03 12:28:30 -07:00
blk-mq: fix sysfs registration/unregistration race
2015-09-29 11:32:45 -06:00
mm: only define hashdist variable when needed
2015-06-24 17:49:41 -07:00
sched/preempt: Merge preempt_mask.h into preempt.h
2015-05-19 08:39:11 +02:00
bpf: Implement function bpf_perf_event_read() that get the selected hardware PMU conuter
2015-08-09 22:50:06 -07:00
net: phy: broadcom: define Broadcom pseudo-PHY address in brcmphy.h
2015-06-10 23:33:58 -07:00
bufferhead: Add _gfp version for sb_getblk()
2015-07-02 01:32:44 -04:00
drivers/base: cacheinfo: fix annoying typo when DT nodes are absent
2015-05-24 12:31:33 -07:00
kernel: conditionally support non-root users, groups and capabilities
2015-04-15 16:35:22 -07:00
Revert "sched, cgroup: replace signal_struct->group_rwsem with a global percpu_rwsem"
2015-09-16 11:51:12 -04:00
Merge branch 'for-4.3-unified-base' into for-4.3
2015-08-25 14:19:29 -04:00
Merge branch 'for-4.3/blkcg' of git://git.kernel.dk/linux-block
2015-09-10 18:56:14 -07:00
cleancache: remove limit on the number of cleancache enabled filesystems
2015-04-14 16:49:03 -07:00
clk: Constify clk_hw argument to provider APIs
2015-08-24 16:49:11 -07:00
clkdev: get rid of redundant clk_add_alias() prototype in linux/clk.h
2015-05-06 11:58:51 +01:00
include, lib: add __printf attributes to several function prototypes
2015-07-17 16:39:53 -07:00
clockevents: Remove unused set_mode() callback
2015-09-14 11:00:55 +02:00
Merge branch 'linus' into timers/core
2015-05-19 16:12:32 +02:00
mm: cma: constify and use correct signness in mm/cma.c
2015-04-14 16:49:04 -07:00
mm: allow compaction of unevictable pages
2015-04-15 16:35:17 -07:00
include, lib: add __printf attributes to several function prototypes
2015-07-17 16:39:53 -07:00
compiler-gcc: integrate the various compiler-gcc[345].h files
2015-06-25 17:00:38 -07:00
compiler-intel: fix wrong compiler barrier() macro
2015-06-25 17:00:38 -07:00
locking, compiler.h: Cast away attributes in the WRITE_ONCE() magic
2015-08-12 11:58:58 +02:00
include, lib: add __printf attributes to several function prototypes
2015-07-17 16:39:53 -07:00
printk: implement support for extended console drivers
2015-06-25 17:00:38 -07:00
vt: add cursor blink interval escape sequence
2015-05-10 19:15:52 +02:00
context_tracking: Add ct_state() and CT_WARN_ON()
2015-07-07 10:59:04 +02:00
context_tracking: Add ct_state() and CT_WARN_ON()
2015-07-07 10:59:04 +02:00
coresight: Fix implicit inclusion of linux/sched.h
2015-08-05 13:30:16 -07:00
efi: Handle memory error structures produced based on old versions of standard
2015-07-15 13:30:38 +01:00
include, lib: add __printf attributes to several function prototypes
2015-07-17 16:39:53 -07:00
thermal: cpu_cooling: implement the power cooling device API
2015-05-04 21:27:52 -07:00
cpufeature: correctly annotate the module init function
2015-07-22 09:58:02 +02:00
cpufreq: acpi-cpufreq: Use cpufreq_cpu_get_raw() in ->get()
2015-09-16 02:17:49 +02:00
cpuidle/coupled: Remove cpuidle_device::safe_state_index
2015-08-28 15:14:54 +02:00
cpumask_set_cpu_local_first => cpumask_local_spread, lament
2015-05-28 11:05:20 +09:30
lib: crc-itu-t.[ch] fix 0x0x prefix in integer constants
2015-05-26 15:26:43 +02:00
lib: introduce crc_t10dif_update()
2015-05-30 22:42:24 -07:00
capabilities: ambient capabilities
2015-09-04 16:54:41 -07:00
crypto: aead - Remove CRYPTO_ALG_AEAD_NEW flag
2015-08-17 16:53:53 +08:00
dax: add huge page fault support
2015-09-08 15:35:28 -07:00
include, lib: add __printf attributes to several function prototypes
2015-07-17 16:39:53 -07:00
debugfs: Export bool read/write functions
2015-07-20 18:44:50 +01:00
PM / devfreq: comments for get_dev_status usage updated
2015-09-11 14:23:29 +09:00
block: kill merge_bvec_fn() completely
2015-08-13 12:31:57 -06:00
Power management and ACPI material for v4.3-rc1
2015-09-01 19:45:46 -07:00
dma-buf: add ref counting for module as exporter
2015-05-13 14:35:57 +05:30
dmaengine: Stricter legacy checking in dma_request_slave_channel_compat()
2015-08-20 12:01:03 +05:30
mm: add dma_pool_zalloc() call to DMA API
2015-09-08 15:35:28 -07:00
iommu: dmar: Provide helper to copy shared irte fields
2015-06-12 11:33:52 +02:00
firmware: dmi: struct dmi_header should be packed
2015-06-25 09:06:57 +02:00
The libnvdimm sub-system introduces, in addition to the libnvdimm-core,
2015-06-29 10:34:42 -07:00
cfq-iosched: fix the setting of IOPS mode on SSDs
2015-06-10 08:01:20 -06:00
mm: fold arch_randomize_brk into ARCH_HAS_ELF_RANDOMIZE
2015-04-14 16:49:05 -07:00
net: fix endian check warning in etherdevice.h
2015-08-17 12:14:53 -07:00
extcon: Remove optional print_state() function pointer of struct extcon_dev
2015-08-10 11:48:55 +09:00
f2fs: add annotation for space utilization of regular/inline dentry
2015-08-21 22:45:13 -07:00
fb.h: Provide alternate screen_base pointer
2015-10-13 10:51:30 -07:00
rcu: Rename rcu_lockdep_assert() to RCU_LOCKDEP_WARN()
2015-07-22 15:27:32 -07:00
bpf: also show process name/pid in bpf_jit_dump
2015-07-30 11:13:21 -07:00
frontswap: allow multiple backends
2015-06-24 17:49:45 -07:00
dax: move DAX-related functions to a new header
2015-09-08 15:35:28 -07:00
fs_pin: Allow for the possibility that m_list or s_list go unused.
2015-04-09 11:39:55 -05:00
FS-Cache: Retain the netfs context in the retrieval op earlier
2015-04-02 14:28:53 +01:00
drivers: usb: fsl: Workaround for USB erratum-A005275
2015-08-14 16:50:36 -07:00
fsl_ifc: Change IO accessor based on endianness
2015-08-07 22:59:34 -05:00
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2015-09-05 20:34:28 -07:00
ftrace: Fix breakage of set_ftrace_pid
2015-07-24 13:58:14 -04:00
device property: Introduce firmware node type for platform data
2015-04-03 23:23:51 +02:00
genalloc: add support of multiple gen_pools per device
2015-09-04 16:54:41 -07:00
block: partition: convert percpu ref
2015-07-17 08:41:53 -06:00
mm: use numa_mem_id() in alloc_pages_node()
2015-09-08 15:35:28 -07:00
staging: goldfish: Fix pointer cast for 32 bits
2015-05-31 11:40:14 +09:00
gpio: remove gpiod_sysfs_set_active_low
2015-05-12 10:46:53 +02:00
sched/preempt: Merge preempt_mask.h into preempt.h
2015-05-19 08:39:11 +02:00
First set of IIO fixes for the 4.2 cycle.
2015-07-13 14:18:07 -07:00
HID: Export hid_field_extract()
2015-06-01 14:33:35 +02:00
sched/preempt, mm/kmap: Explicitly disable/enable preemption in kmap_atomic_*
2015-05-19 08:39:14 +02:00
gpu: host1x: Export host1x_syncpt_read()
2015-04-02 18:46:20 +02:00
timer: Minimize nohz off overhead
2015-06-19 15:18:28 +02:00
x86/htirq: Use hierarchical irqdomain to manage Hypertransport interrupts
2015-04-24 15:36:50 +02:00
dax: don't use set_huge_zero_page()
2015-09-08 15:35:28 -07:00
hugetlbfs: add hugetlbfs_fallocate()
2015-09-08 15:35:28 -07:00
hwspinlock/core: add device tree support
2015-05-02 09:54:30 +03:00
Drivers: hv: vmbus: Further improve CPU affiliation logic
2015-08-05 11:44:28 -07:00
i2c: core: Add support for best effort block read emulation
2015-08-24 14:05:19 +02:00
block: move PM request support to IDE
2015-05-05 13:40:42 -06:00
mac80211: fix BIT position for TDLS WIDE extended cap
2015-08-14 17:49:53 +02:00
ieee802154: Fix EUI-64 station address validation.
2015-05-31 13:40:53 +02:00
net/core: Add reading VF statistics through the PF netdevice
2015-06-15 17:23:03 -07:00
macvtap: Increase limit of macvtap queues
2015-06-23 06:14:04 -07:00
net: Pass kern from net_proto_family.create to sk_alloc
2015-05-11 10:50:17 -04:00
vlan: Add GRO support for non hardware accelerated vlan
2015-06-01 16:50:52 -07:00
IGMP: Inhibit reports for local multicast groups
2015-08-28 13:28:47 -07:00
sock_diag: specify info_size per inet protocol
2015-06-15 19:49:22 -07:00
net: ipv4 sysctl option to ignore routes when nexthop link is down
2015-06-24 02:15:54 -07:00
module: relocate module_init from init.h to module.h
2015-07-05 23:59:14 -04:00
Revert "sched, cgroup: replace signal_struct->group_rwsem with a global percpu_rwsem"
2015-09-16 11:51:12 -04:00
iommu/vt-d: Split up iommu->domains array
2015-08-12 16:23:33 +02:00
hrtimer: Remove hrtimer_start() return value
2015-04-22 17:06:52 +02:00
arch, drivers: don't include <asm/io.h> directly, use <linux/io.h> instead
2015-08-10 23:07:05 -04:00
add devm_memremap_pages
2015-08-27 19:40:58 -04:00
Break up monolithic iommu table/lock into finer graularity pools and lock
2015-04-18 12:32:59 -07:00
include, lib: add __printf attributes to several function prototypes
2015-07-17 16:39:53 -07:00
kernel/resource.c: remove deprecated __check_region() and friends
2015-04-15 16:35:22 -07:00
iommu: iova: Move iova cache management to the iova library
2015-07-28 15:47:58 +01:00
ipmi: Don't flush messages in sender() in run-to-completion mode
2015-09-03 15:02:28 -05:00
net: ipv6 sysctl option to ignore routes when nexthop link is down
2015-08-13 21:27:19 -07:00
genirq: Remove irq argument from irq flow handlers
2015-09-16 15:47:51 +02:00
irqchip: Move IRQCHIP_DECLARE macro to include/linux/irqchip.h
2015-07-02 22:34:38 +02:00
genirq: Remove irq argument from irq flow handlers
2015-09-16 15:47:51 +02:00
irqdomain: Add an accessor for the of_node field
2015-10-09 17:17:30 +02:00
genirq: Remove irq argument from irq flow handlers
2015-09-16 15:47:51 +02:00
genirq: Remove irq_node()
2015-06-25 12:06:45 +02:00
Pretty much all bug fixes and clean ups for 4.3, after a lot of
2015-09-03 12:52:19 -07:00
jhash: Update jhash_[321]words functions to use correct initval
2015-04-03 12:52:29 -04:00
Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2015-09-01 14:04:50 -07:00
locking/static_keys: Fix up the static keys documentation
2015-09-15 07:12:06 +02:00
x86/kasan, mm: Introduce generic kasan_populate_zero_shadow()
2015-08-22 14:54:55 +02:00
Merge branch 'drm-next-merged' of git://people.freedesktop.org/~airlied/linux into v4l_for_linus
2015-04-21 09:44:55 -03:00
include, lib: add __printf attributes to several function prototypes
2015-07-17 16:39:53 -07:00
kernfs: implement kernfs_path_len()
2015-08-18 15:49:15 -07:00
kexec: split kexec_load syscall from kexec core code
2015-09-10 13:29:01 -07:00
klist: implement klist_prev()
2015-07-28 08:50:42 +01:00
mm: kmemleak_alloc_percpu() should follow the gfp from per_alloc()
2015-06-24 17:49:46 -07:00
kmod: use system_unbound_wq instead of khelper
2015-09-10 13:29:01 -07:00
include, lib: add __printf attributes to several function prototypes
2015-07-17 16:39:53 -07:00
perf/x86/hw_breakpoints: Disallow kernel breakpoints unless kprobe-safe
2015-08-04 10:16:54 +02:00
mm: consolidate all page-flags helpers in <linux/page-flags.h>
2015-04-15 16:35:17 -07:00
kernel/kthread.c:kthread_create_on_node(): clarify documentation
2015-09-04 16:54:41 -07:00
ktime: Fix ktime_divns to do signed division
2015-05-13 10:19:35 +02:00
KVM: make halt_poll_ns per-vCPU
2015-09-06 16:27:10 +02:00
KVM: add memslots argument to kvm_arch_memslots_updated
2015-05-26 12:40:17 +02:00
block: fix blk_stack_limits() regression due to lcm() change
2015-03-31 09:45:50 -06:00
leds: unify the location of led-trigger API
2015-05-04 11:05:55 -07:00
sched/stop_machine: Fix deadlock between multiple stop_two_cpus()
2015-06-19 10:03:12 +02:00
libata: add ATA_HORKAGE_MAX_SEC_1024 to revert back to previous max_sectors limit
2015-07-15 11:47:24 -04:00
libfdt: add fdt type definitions
2015-04-29 17:17:17 -05:00
libnvdimm, pmem: direct map legacy pmem by default
2015-08-28 23:40:05 -04:00
inode: add hlist_fake to avoid the inode hash lock in evict
2015-08-17 18:39:45 -04:00
livepatch: introduce patch/func-walking helpers
2015-05-19 23:58:43 +02:00
locking, include/llist: Use linux/atomic.h instead of asm/cmpxchg.h
2015-08-12 11:59:08 +02:00
Merge branch 'sched-hrtimers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2015-06-24 15:09:40 -07:00
security: add ioctl specific auditing to lsm_audit
2015-07-13 13:31:58 -04:00
Yama: remove needless CONFIG_SECURITY_YAMA_STACKED
2015-07-28 13:18:19 +10:00
mailbox: Add ability for clients to request channels by name
2015-06-11 22:19:45 +05:30
mailbox: switch to hrtimer for tx_complete polling
2015-08-10 14:29:27 +05:30
bus: mvebu-mbus: add mv_mbus_dram_info_nooverlap()
2015-05-28 12:21:08 +02:00
mdio-gpio: Propagate mii_bus.phy_ignore_ta_mask
2015-05-14 22:35:13 -04:00
mei: bus: add and call callback on notify event
2015-08-03 17:30:00 -07:00
mem-hotplug: handle node hole when initializing numa_meminfo.
2015-09-08 15:35:28 -07:00
memcg: remove pcp_counter_lock
2015-10-01 21:42:35 -04:00
mm: ZONE_DEVICE for "device memory"
2015-08-27 19:40:58 -04:00
mm, mempool: disallow mempools based on slab caches with constructors
2015-04-15 16:35:18 -07:00
add microchip LAN88xx phy driver
2015-09-09 17:19:14 -07:00
mm: numa: remove migrate_ratelimited
2015-04-14 16:49:05 -07:00
char: make misc_deregister a void function
2015-08-05 10:35:49 -07:00
mm: new arch_remap() hook
2015-06-24 17:49:41 -07:00
memcg: fix dirty page migration
2015-10-01 21:42:35 -04:00
mm: drop __nocast from vm_flags_t definition
2015-09-08 15:35:28 -07:00
include, lib: add __printf attributes to several function prototypes
2015-07-17 16:39:53 -07:00
mm: introduce idle page tracking
2015-09-10 13:29:01 -07:00
libnvdimm for 4.3:
2015-09-08 14:35:59 -07:00
mod_devicetable: add space before */
2015-08-07 15:03:42 +02:00
module: relocate module_init from init.h to module.h
2015-07-05 23:59:14 -04:00
Minor merge needed, due to function move.
2015-07-01 10:49:25 -07:00
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
2015-04-18 11:20:31 -04:00
MPILIB: add mpi_read_buf() and mpi_get_size() helpers
2015-06-16 14:35:06 +08:00
mpls: ip tunnel support
2015-07-21 10:39:05 -07:00
PCI/MSI: Drop domain field from msi_controller
2015-07-30 00:14:39 +02:00
turn user_{path_at,path,lpath,path_dir}() into static inlines
2015-05-15 01:10:45 -04:00
libnvdimm: infrastructure for btt devices
2015-06-25 04:20:04 -04:00
net_dbg_ratelimited: turn into no-op when !DEBUG
2015-08-06 23:51:30 -07:00
switchdev: remove NETIF_F_HW_SWITCH_OFFLOAD feature flag
2015-05-12 18:43:55 -04:00
netpoll: Close race condition between poll_one_napi and napi_disable
2015-09-23 14:32:50 -07:00
netfilter: nf_conntrack: make nf_ct_zone_dflt built-in
2015-09-02 16:32:56 -07:00
netfilter: bridge: reduce nf_bridge_info to 32 bytes again
2015-07-30 13:37:42 +02:00
netfilter: don't pull include/linux/netfilter.h from netns headers
2015-06-18 21:14:31 +02:00
netfilter: add netfilter ingress hook after handle_ing() under unique static key
2015-05-14 01:10:05 -04:00
netfilter: Define v6ops in !CONFIG_NETFILTER case.
2015-08-27 16:35:51 -07:00
netlink, mmap: fix edge-case leakages in nf queue zero-copy
2015-09-09 21:43:22 -07:00
pnfs: move common blocklayout XDR defintions to nfs4.h
2015-08-17 13:22:49 -05:00
NFS: Remove nfs_release()
2015-08-17 13:32:56 -05:00
NFS: Get suppattr_exclcreat when getting server capabilities
2015-08-27 19:45:27 -04:00
NFS: Remove unused nfs_rw_ops->rw_release() function
2015-06-10 18:32:40 -04:00
NFSv4: Express delegation limit in units of pages
2015-09-07 12:36:13 -04:00
nilfs2: fix sanity check of btree level in nilfs_btree_root_broken()
2015-05-05 17:10:11 -07:00
Merge branch 'nmi' of git://ftp.arm.linux.org.uk/~rmk/linux-arm
2015-09-08 12:28:10 -07:00
NTB: Fix documentation for ntb_peer_db_clear.
2015-09-07 15:17:09 -04:00
NTB: Add flow control to the ntb_netdev
2015-09-07 15:17:08 -04:00
NVMe: Add nvme subsystem reset IOCTL
2015-08-18 11:56:13 -06:00
nvmem: Add nvmem_device based consumer apis.
2015-08-05 13:43:44 -07:00
nvmem: Add a simple NVMEM framework for nvmem providers
2015-08-05 13:43:12 -07:00
device property: check fwnode type in to_of_node()
2015-08-26 01:46:39 +02:00
of: constify drv arg of of_driver_match_device stub
2015-07-27 08:23:27 -05:00
dmaengine: of_dma: Support for DMA routers
2015-05-09 17:11:25 +05:30
Devicetree changes for v4.2
2015-07-01 19:40:18 -07:00
gpio: defer probe if pinctrl cannot be found
2015-07-28 13:55:36 +02:00
of: fix a build error to of_graph_get_endpoint_by_regs function
2015-06-24 11:18:48 +10:00
of/platform: Assign MSI domain to platform device
2015-07-30 00:14:37 +02:00
of/platform: add function to populate default bus
2015-08-25 11:29:55 -05:00
PKCS#7: Add OIDs for sha224, sha284 and sha512 hash algos and use them
2015-09-01 09:59:20 +10:00
mm, oom: add description of struct oom_control
2015-09-08 15:35:28 -07:00
locking/rwsem: Reduce spinlock contention in wakeup after up_read()/up_write()
2015-05-08 12:27:59 +02:00
mm: introduce idle page tracking
2015-09-10 13:29:01 -07:00
mm, page_isolation: make set/unset_migratetype_isolate() file-local
2015-09-08 15:35:28 -07:00
mm: introduce idle page tracking
2015-09-10 13:29:01 -07:00
mm: introduce idle page tracking
2015-09-10 13:29:01 -07:00
mm/page_owner: set correct gfp_mask on page_owner
2015-07-17 16:39:54 -07:00
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2015-07-04 19:36:06 -07:00
parport: add device-model to parport subsystem
2015-06-01 07:08:18 +09:00
Update Viresh Kumar's email address
2015-07-17 16:39:53 -07:00
PCI/ACPI: Optimize device state transition delays
2015-04-08 16:25:25 -05:00
PCI: Don't clear ASPM bits when the FADT declares it's unsupported
2015-04-09 14:20:11 -05:00
PCI: Move ATS declarations to linux/pci.h so they're all together
2015-08-13 15:59:58 -05:00
pci: mm: add pci_pool_zalloc() call
2015-09-08 15:35:28 -07:00
[media] tw68: Move PCI vendor and device IDs to pci_ids.h
2015-08-16 13:26:01 -03:00
percpu: update incorrect comment for this_cpu_*() operations
2015-07-14 17:43:56 -04:00
percpu-rwsem: introduce percpu_rwsem_release() and percpu_rwsem_acquire()
2015-08-15 13:52:10 +02:00
percpu_counter: batch size aware __percpu_counter_compare()
2015-05-29 07:39:34 +10:00
perf: add the necessary core perf APIs when accessing events counters in eBPF programs
2015-08-09 22:50:05 -07:00
Remove rest of exec domains.
2015-04-12 21:03:31 +02:00
phy: add phy_device_remove()
2015-09-24 23:04:53 -07:00
phy: fixed_phy: Add gpio to determine link up/down.
2015-08-31 14:48:02 -07:00
platform_device: better support builtin boilerplate avoidance
2015-06-16 14:12:37 -04:00
Merge branch 'pm-wakeirq'
2015-06-19 01:18:14 +02:00
PM / clock_ops: Provide default runtime ops to users
2015-05-12 23:55:37 +02:00
PM / Domains: Remove unusable governor dummies
2015-08-29 01:54:43 +02:00
PM / OPP: add dev_pm_opp_get_suspend_opp() helper
2015-09-09 02:20:39 +02:00
PM / QoS: Make it possible to expose device latency tolerance to userspace
2015-07-28 08:50:41 +01:00
PM / sleep: Allow devices without runtime PM to do direct-complete
2015-07-21 23:14:22 +02:00
PM / wakeirq: Fix typo in prototype for dev_pm_set_dedicated_wake_irq
2015-05-30 02:17:15 +02:00
PM / Wakeirq: Add automated device wake IRQ handling
2015-05-20 01:56:31 +02:00
x86, pmem: clarify that ARCH_HAS_PMEM_API implies PMEM mapped WB
2015-08-27 19:40:59 -04:00
include/linux/poison.h: remove not-used poison pointer macros
2015-09-10 13:29:01 -07:00
power: Add devm_power_supply_get_by_phandle() helper function
2015-06-10 16:15:54 +02:00
sched/preempt: Fix cond_resched_lock() and cond_resched_softirq()
2015-08-03 12:21:24 +02:00
hexdump: do not print debug dumps for !CONFIG_DEBUG
2015-09-10 13:29:01 -07:00
Add a matching set of device_ functions for determining mac/phy
2015-08-13 16:58:29 -07:00
proportions: Spelling s/consitent/consistent/
2015-08-07 14:37:04 +02:00
arm64: psci: factor invocation code to drivers
2015-08-03 12:33:39 +01:00
ptp: remove 32 bit get/set methods.
2015-03-31 12:01:19 -04:00
seccomp: add ptrace options for suspend/resume
2015-07-15 11:52:52 -07:00
pwm: Clean up kerneldoc
2015-08-17 15:40:20 +02:00
spi: pxa2xx: Add support for Intel Sunrisepoint
2015-07-31 19:13:33 +01:00
firmware: qcom: scm: Add HDCP Support
2015-05-28 10:47:45 -05:00
quota: Propagate error from ->acquire_dquot()
2015-07-23 20:59:10 +02:00
random: Remove kernel blocking API
2015-06-10 19:14:04 +08:00
rbtree: Make lockless searches non-fatal
2015-05-28 11:32:04 +09:30
rbtree: Make lockless searches non-fatal
2015-05-28 11:32:04 +09:30
rbtree: Implement generic latch_tree
2015-05-28 11:32:06 +09:30
rculist: Fix another sparse warning
2015-05-27 12:58:04 -07:00
rcu: Change _wait_rcu_gp() to work around GCC bug 67055
2015-09-20 20:50:06 -07:00
rcu: Add RCU-sched flavors of get-state and cond-sync
2015-07-22 15:26:58 -07:00
rcu: Add RCU-sched flavors of get-state and cond-sync
2015-07-22 15:26:58 -07:00
kernel/reboot.c: add orderly_reboot for graceful reboot
2015-04-15 16:35:23 -07:00
Merge remote-tracking branches 'regmap/topic/lockdep' and 'regmap/topic/seq-delay' into regmap-next
2015-09-04 17:22:10 +01:00
remoteproc: add a rproc ops for performing address translation
2015-06-17 09:57:12 +03:00
reset: Add (devm_)reset_control_get stub functions
2015-09-01 09:56:58 +02:00
rhashtable: Add cap on number of elements in hash table
2015-05-16 18:08:26 -04:00
rapidio: Fix kerneldoc and comment
2015-05-26 15:23:23 +02:00
mm: send one IPI per CPU to TLB flush all entries after unmapping pages
2015-09-04 16:54:41 -07:00
rtc: interface: Remove rtc_set_mmss()
2015-06-25 01:13:43 +02:00
switchdev; add VLAN support for port's bridge_getlink
2015-06-23 06:56:18 -07:00
lib: scatterlist: add sg splitting function
2015-08-24 14:28:01 -06:00
Revert "sched, cgroup: replace signal_struct->group_rwsem with a global percpu_rwsem"
2015-09-16 11:51:12 -04:00
misc: mic: SCIF header file and IOCTL interface
2015-05-24 12:13:36 -07:00
seccomp: swap hard-coded zeros to defined name
2015-07-15 11:52:54 -07:00
security: fix typo in security_task_prctl
2015-09-20 17:00:26 -07:00
fs/seq_file: convert int seq_vprint/seq_printf/etc... returns to void
2015-09-11 15:21:34 -07:00
Minor merge needed, due to function move.
2015-07-01 10:49:25 -07:00
tty/early: make serial8250_early_{in,out} static again
2015-07-23 17:43:30 -07:00
serial: core: Fix unused variable warnings from uart_console()
2015-05-06 22:27:00 +02:00
serial: sh-sci: Standardize on using the BIT() macro to define register bits
2015-05-10 19:06:38 +02:00
Input: i8042 - add unmask_kbd_data option
2015-07-16 10:30:55 -07:00
dmaengine: shdma: Make dummy shdma_chan_filter() always return false
2015-08-05 08:48:00 +05:30
skbuff: Fix skb checksum partial check.
2015-09-29 16:48:46 -07:00
slab: infrastructure for bulk object allocation and freeing
2015-09-04 16:54:41 -07:00
smp: don't use 16-bit words for atomic accesses
2015-04-20 09:08:49 -07:00
smpboot: allow passing the cpumask on per-cpu thread registration
2015-09-04 16:54:41 -07:00
sock_diag: define destruction multicast groups
2015-06-15 19:49:22 -07:00
new helper: msg_data_left()
2015-04-11 15:53:35 -04:00
Merge branch 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2015-09-01 08:40:25 -07:00
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
2015-04-14 09:50:27 -07:00
stddef.h: move offsetofend inside #ifndef/#endif guard, neaten
2015-06-25 17:00:38 -07:00
stmmac: remove setup/free glue callbacks
2015-07-29 00:13:25 -07:00
stop_machine: Use 'cpu_stop_fn_t' where possible
2015-08-03 12:21:27 +02:00
string: provide strscpy()
2015-09-10 15:36:59 -04:00
lib/string_helpers: rename "esc" arg to "only"
2015-09-10 13:29:01 -07:00
lib: add software 842 compression/decompression
2015-05-11 15:06:43 +08:00
mm: swap: zswap: maybe_preload & refactoring
2015-09-08 15:35:28 -07:00
mm/hwpoison: fix race between soft_offline_page and unpoison_memory
2015-09-08 15:35:28 -07:00
sys_membarrier(): system-wide memory barrier (generic, x86)
2015-09-11 15:21:34 -07:00
sysctl: Allow creating permanently empty directories that serve as mountpoints.
2015-07-01 10:36:39 -05:00
sysfs: Add support for permanently empty directories to serve as mount points.
2015-07-01 10:36:45 -05:00
check_syslog_permissions() cleanup
2015-06-25 17:00:39 -07:00
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2015-05-23 01:22:35 -04:00
thermal: Add a function to get the minimum power
2015-09-14 07:39:46 -07:00
Revert "ti-st: add device tree support"
2015-08-05 13:24:12 -07:00
nohz: Affine unpinned timers to housekeepers
2015-09-02 10:33:22 +02:00
time: Introduce struct itimerspec64
2015-08-17 11:25:28 -07:00
time: Prevent early expiry of hrtimers[CLOCK_REALTIME] at the leap second edge
2015-06-12 11:15:49 +02:00
Merge branch 'fortglx/4.3/time' of https://git.linaro.org/people/john.stultz/linux into timers/core
2015-08-20 21:13:22 +02:00
timer: Reduce timer migration overhead if disabled
2015-06-19 15:18:28 +02:00
timerqueue: Let timerqueue_add/del return information
2015-04-22 17:06:49 +02:00
sched/topology: Rename topology_thread_cpumask() to topology_sibling_cpumask()
2015-05-27 15:22:15 +02:00
tracing, perf: Implement BPF programs attached to uprobes
2015-08-06 15:29:14 -03:00
tracing: Add TRACE_DEFINE_ENUM() macro to map enums to their values
2015-04-08 09:39:56 -04:00
tty: core: Add tty_debug() for printk(KERN_DEBUG) messages
2015-07-23 18:37:31 -07:00
Avoid usb reset crashes by making tty_io cdevs truly dynamic
2015-08-03 15:24:43 -07:00
rcu: Create a synchronize_rcu_mult()
2015-07-22 15:27:29 -07:00
net: make u64_stats_init() a function
2015-06-15 16:02:52 -07:00
lib: introduce strncpy_from_unsafe()
2015-08-28 16:27:27 -07:00
uidgid: make uid_valid and gid_valid work with !CONFIG_MULTIUSER
2015-05-14 17:55:51 -07:00
new helper: iov_iter_rw()
2015-04-11 22:29:44 -04:00
uprobes/x86: Make arch_uretprobe_is_alive(RP_CHECK_CALL) more clever
2015-07-31 10:38:06 +02:00
Revert "usb: interface authorization: Declare authorized attribute"
2015-08-18 09:59:12 -07:00
uas: Add US_FL_MAX_SECTORS_240 flag
2015-04-28 12:48:57 +02:00
userfaultfd: mcopy_atomic|mfill_zeropage: UFFDIO_COPY|UFFDIO_ZEROPAGE preparation
2015-09-04 16:54:41 -07:00
util_macros.h: have array pointer point to array of constants
2015-05-05 17:10:11 -07:00
PKCS#7: Appropriately restrict authenticated attributes and content type
2015-08-12 17:01:01 +01:00
VFIO updates for v4.1
2015-04-14 18:06:47 -07:00
vgaarb: Stub vga_set_legacy_decoding()
2015-04-07 11:14:38 -06:00
virtio: drop virtio_device_is_legacy_only
2015-04-15 12:41:14 +09:30
virtio: add explicit big-endian support to memory accessors
2015-06-01 15:48:54 +02:00
virtio: add explicit big-endian support to memory accessors
2015-06-01 15:48:54 +02:00
virtio_ring: Update weak barriers to use dma_wmb/rmb
2015-04-13 21:04:16 +09:30
vme: export vme_check_window()
2015-06-12 17:26:57 -07:00
virtio: add explicit big-endian support to memory accessors
2015-06-01 15:48:54 +02:00
userfaultfd: revert "userfaultfd: waitqueue: add nr wake parameter to __wake_up_locked_key"
2015-09-22 15:09:53 -07:00
kernel/watchdog: move NMI function header declarations from watchdog.h to nmi.h
2015-09-04 16:54:41 -07:00
workqueue: fix some docbook warnings
2015-08-17 15:48:24 -04:00
writeback: implement foreign cgroup inode detection
2015-06-02 08:40:20 -06:00
mm: zbud: constify the zbud_ops
2015-09-08 15:35:28 -07:00
zpool: add zpool_has_pool()
2015-09-10 13:29:01 -07:00
zsmalloc: account the number of compacted pages
2015-09-08 15:35:28 -07:00
670b19ae9b