The current layer init code keeps a pointer to the primary plane layer
in sun4i_drv. When we eventually support multiple display pipelines,
this would force us to keep track of primary planes for all crtcs. And
these pointers only get used at bind time.
Instead, have the crtc init code iterate through the returned layers
to find the primary and cursor layers. And drop the pointer from the
sun4i_drv structure.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
The tcon provides part of the functionality of the crtc, and also
provides the device node for the output port of the crtc. To be able
to use drm_of_find_possible_crtcs(), all crtc must be initialized before
any downstream encoders. The other part of the crtc is the display
backend.
The Rockchip DRM driver does this by first binding all vops, which is
their crtc, and this step also creates the crtc objects. Then all
remaining hardware components are bound. With the Allwinner display
pipeline, we have multiple components comprising the crtc, and varying
depths of the display pipeline. Since components are added with a depth
first search of the of_graph, we can initialize the crtc object within
the tcon bind function. Since the backend precedes the tcon, and the
backends cannot be muxed or switched around, we can be sure that the
associated backend is already initialized.
This patch also moves the crtc pointer from the main drm_device data to
the tcon device data. Besides the crtc callbacks, the crtc structure is
only used within the tcon driver to signal vblank events from its
interrupt handler.
As the crtc and layer bits are now called from the tcon bits, we must
move them from the sun4i-drm module to the sun4i-tcon module to avoid
circular dependencies between the two modules. This is because sun4i-drm
also calls into sun4i-tcon.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
This patch moves the sun4i_layers_init call from sun4i_drv_bind to
sun4i_crtc_init, and the layers pointer from struct sun4i_drv to
struct sun4i_crtc.
The layers are bound to a specific crtc, and they are not directly
used once initiated. They are used through their included drm_plane
structures.
Moving the layers into the crtc facilitates binding them to the crtc
explicitly, by setting the corresponding bit in their .possible_crtcs
fields right after the crtc is initialized. This is done in a later
patch.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
The number of defined planes in sun4i_layer is unknown to other parts
of the sun4i drm driver. Since the return value of sun4i_layers_init
is a list of layers, make it return 1 more empty layer as an end of
list guard value.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
The way drm_of_find_possible_crtcs works is it tries to match the
remote-endpoint of the given node's various endpoints to all the
crtc's .port field. Thus we need to set drm_crtc.port to the output
port node of the underlying TCON.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
sunxi_rgb2yuv_coef is a table of RGB-to-YUV conversion coefficients.
They are programmed into the hardware, and can be declared constant.
Reported-by: Priit Laes <plaes@plaes.org>
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
sun4i_crtc_init can fail for a number of reasons. Instead of returning
a NULL pointer when it fails, pass back the encountered error using
ERR_PTR.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
sun4i_layers_init allocates an array to store pointers to newly created
layers returned by sun4i_layer_init_one(), but fails to actually store
them. But it actually returns the empty array to unsuspecting users.
Save the pointers in the array, so that they may be used later.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
The assignment found in the main loop in sun4i_layers_init:
struct sun4i_layer *layer = layers[i];
is useless as it gets overwritten by the next line:
layer = sun4i_layer_init_one(drm, plane);
Drop the assignment.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
In sun4i_layers_init we are allocating an array of pointers to struct
sun4i_layer:
layers = devm_kcalloc(drm->dev, ARRAY_SIZE(sun4i_backend_planes),
sizeof(**layers), GFP_KERNEL);
The element size should be the size of an individual element of the
array. Change it to sizeof(*layers) to avoid wasting a lot of memory.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
drm_vblank_init can fail due to insufficient memory. Ignoring the error
and proceeding may cause the kernel to dereference an invalid pointer
when vblank is enabled.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
The master bind function calls numerous drm functions which initialize
underlying structures. It also tries to bind the various components
of the display pipeline, some of which may add additional drm objects.
This patch adds proper cleanup functions in the error path of the
master bind function.
This requires the patch "drm/sun4i: Move drm_mode_config_cleanup call
to main driver", which splits out drm_mode_config_cleanup from
sun4i_framebuffer_free so we can call it separately.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
drm_mode_config_cleanup is the complement of drm_mode_config_init, which
is called in the bind function of sun4i_drv. drm_mode_config_cleanup
should be put in the unbind function to match.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
This fixes a sparse warning about incorrect type in return expression.
Signed-off-by: Nicholas Mc Guire <der.herr@hofr.at>
Acked-by: Marek Vasut <marek.vasut@gmail.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com>
writeable in struct intel_spi is a boolean and assignment should be to
true/false not 1/0 as recommended by boolinit.cocci.
Signed-off-by: Nicholas Mc Guire <der.herr@hofr.at>
Acked-by: Marek Vasut <marek.vasut@gmail.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com>
Adjust the impedance values of the RX and TX lanes in the SGMII block
so that they are closer to optimal values.
Signed-off-by: Timur Tabi <timur@codeaurora.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
The ethernet support now calls directly into the ipv6 core code, which
fails if IPV6 is a loadable module but mlx5 is built-in:
drivers/net/ethernet/mellanox/mlx5/core/en_tc.o: In function `mlx5e_create_encap_header_ipv6':
en_tc.c:(.text.mlx5e_create_encap_header_ipv6+0x110): undefined reference to `ip6_route_output_flags'
This adds a dependency to ensure that MLX5_CORE_EN can only be built
if we are able link the kernel successfully. The downside is that the
ethernet option can be hidden. Alternatively we could make MLX5_CORE
depend on "IPV6 || !IPV6", which would force MLX5_CORE to be a module
when IPV6 is, including in configurations where we don't use the ethernet
support at all.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
We call pcie_aspm_exit_link_state() when we remove a device. If the device
is the last PCIe function to be removed below a bridge and the bridge has
an ASPM link_state struct, we disable ASPM on the link. Disabling ASPM
requires link->downstream (used in pcie_config_aspm_link()).
We previously set link->downstream in pcie_aspm_cap_init(), but only if the
device was not blacklisted. Removing the blacklisted device caused a NULL
pointer dereference in the pcie_aspm_exit_link_state() ->
pcie_config_aspm_link() path:
# echo 1 > /sys/bus/pci/devices/0000\:0b\:00.0/remove
...
BUG: unable to handle kernel NULL pointer dereference at 0000000000000080
IP: pcie_config_aspm_link+0x5d/0x2b0
Call Trace:
pcie_aspm_exit_link_state+0x75/0x130
pci_stop_bus_device+0xa4/0xb0
pci_stop_and_remove_bus_device_locked+0x1a/0x30
remove_store+0x50/0x70
dev_attr_store+0x18/0x30
sysfs_kf_write+0x44/0x60
kernfs_fop_write+0x10e/0x190
__vfs_write+0x28/0x110
? rcu_read_lock_sched_held+0x5d/0x80
? rcu_sync_lockdep_assert+0x2c/0x60
? __sb_start_write+0x173/0x1a0
? vfs_write+0xb3/0x180
vfs_write+0xc4/0x180
SyS_write+0x49/0xa0
do_syscall_64+0xa6/0x1c0
entry_SYSCALL64_slow_path+0x25/0x25
---[ end trace bd187ee0267df5d9 ]---
To avoid this, set link->downstream in alloc_pcie_link_state(), so every
pcie_link_state structure has a valid link->downstream pointer.
[bhelgaas: changelog]
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Rajat Jain <rajatja@google.com>
CC: stable@vger.kernel.org
This patch adds documentation for a new "phy-handle" property,
"fixed-link" and "mdio" sub-node. These allows the enumeration
of PHYs which are supported by the phy library under drivers/net/phy.
The EMAC ethernet controller in IBM and AMCC 4xx chips is
currently stuck with a few privately defined phy
implementations. It has no support for PHYs which
are supported by the generic phylib.
Acked-by: Rob Herring <robh@kernel.org>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
In Odroid XU3 Lite board, the temperature levels reported for thermal
zone 0 were weird. In warm room:
/sys/class/thermal/thermal_zone0/temp:32000
/sys/class/thermal/thermal_zone1/temp:51000
/sys/class/thermal/thermal_zone2/temp:55000
/sys/class/thermal/thermal_zone3/temp:54000
/sys/class/thermal/thermal_zone4/temp:51000
Sometimes after booting the value was even equal to ambient temperature
which is highly unlikely to be a real temperature of sensor in SoC.
The thermal sensor's calibration (trimming) is based on fused values.
In case of the board above, the fused values are: 35, 52, 43, 58 and 43
(corresponding to each TMU device). However driver defined a minimum value
for fused data as 40 and for smaller values it was using a hard-coded 55
instead. This lead to mapping data from sensor to wrong temperatures
for thermal zone 0.
Various vendor 3.10 trees (Hardkernel's based on Samsung LSI, Artik 10)
do not impose any limits on fused values. Since we do not have any
knowledge about these limits, use 0 as a minimum accepted fused value.
This should essentially allow accepting any reasonable fused value thus
behaving like vendor driver.
The exynos5420-tmu-sensor-conf.dtsi is copied directly from existing
exynos4412 with one change - the samsung,tmu_min_efuse_value.
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Acked-by: Eduardo Valentin <edubezval@gmail.com>
Reviewed-by: Javier Martinez Canillas <javier@osg.samsung.com>
Tested-by: Javier Martinez Canillas <javier@osg.samsung.com>
Reviewed-by: Anand Moon <linux.amoon@gmail.com>
Tested-by: Anand Moon <linux.amoon@gmail.com>
Add pcie-phy node to phy-exynos-pcie along with some changes to other
nodes:
1. Remove the configuration space from "ranges" property because this
was the old way of getting it. Preferred is to use "config" reg.
2. Use the reg-names as "elbi" and "config" so the purpose of addresses
will be easily known.
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Reviewed-by: Pankaj Dubey <pankaj.dubey@samsung.com>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
TM2 and TM2E devices are provided with a ST-Microelectronics
Finger Tip S device with small differences:
- screen size
- TM2E uses the stmfts also as a touchkey for "back" and "menu"
In this commit the initial value of the interrupt line is set to
EXYNOS_PIN_PULL_UP as the interrupt is triggered when the line
goes down.
Signed-off-by: Andi Shyti <andi.shyti@samsung.com>
Reviewed-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Both archs should work just fine with libata subsystem nowadays.
Suggested-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Add the device tree node for the ir-spi driver which enables the
IR LED for remote controlling.
This patch sets first the GPR3[3] gpio line as a regulator-fixed
for enabling an external regulator which powers the IR LED.
Removes also the default assignment of GPG3[7] related to the
MOSI line of the SPI3 bus.
Signed-off-by: Andi Shyti <andi.shyti@samsung.com>
Reviewed-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Sparse generates two warnings related to incorrect type in assignment.
This patch changes the types in the struct defined in unisys
Signed-off-by: Andrea Ghittino <aghittino@gmail.com>
Acked-by: David Kershner <david.kershner@unisys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch replace "the the " with "the". The replacement couldn't be
automated because sometimes the first "the" was meant to be another
word.
Signed-off-by: simran singhal <singhalsimran0@gmail.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch replace "the the " with "the". The replacement couldn't be
automated because sometimes the first "the" was meant to be another
word.
Signed-off-by: simran singhal <singhalsimran0@gmail.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch replace "the the " with "the". The replacement couldn't be
automated because sometimes the first "the" was meant to be another
word.
Signed-off-by: simran singhal <singhalsimran0@gmail.com>
Acked-by: David Kershner <david.kershner@unisys.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Use macro min_t to get the minimum of two values for readability.
Signed-off-by: Narcisa Ana Maria Vasile <narcisaanamaria12@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Current CMA size of 64 Mbytes is right on the edge of being small when
several drivers need to allocate large CMA buffers.
For example, if the s5p-mfc driver needs to pre-allocate CMA memory to
decode a H.264 1080p video, then there won't be enough CMA memory left
for other drivers, such as the exynos-drm driver that may need to
allocate GEM buffers for the display manager.
Increasing CMA size to 96 Mbytes in exynos_defconfig addresses use-cases
such as these.
Suggested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
Reviewed-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
This patch replace "is is " with "is". The replacement couldn't be
automated because sometimes the first "is" was meant to be another
word.
Signed-off-by: simran singhal <singhalsimran0@gmail.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch replace "is is " with "is". The replacement couldn't be
automated because sometimes the first "is" was meant to be another
word.
Signed-off-by: simran singhal <singhalsimran0@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
If DMA is not available (even when configured in DeviceTree), the driver
will fail the startup procedure thus making serial console not
available.
For example this causes boot failure on QEMU ARMv7 (Exynos4210, SMDKC210):
[ 1.302575] OF: amba_device_add() failed (-19) for /amba/pdma@12680000
...
[ 11.435732] samsung-uart 13800000.serial: DMA request failed
[ 72.963893] samsung-uart 13800000.serial: DMA request failed
[ 73.143361] Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000000
DMA is not necessary for serial to work, so continue with UART startup
after emitting a warning.
Fixes: 62c37eedb7 ("serial: samsung: add dma reqest/release functions")
Cc: <stable@vger.kernel.org>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
DYNAMIC_DEBUG is quite useful for debugging kernels and should not cause
noticeable performance regressions. It makes the kernel bigger (around 4%)
but this difference should not impact typical developer and reference
usage of this defconfig.
Sizes:
zImage-old: 4641496 bytes
zImage-new: 4811384 bytes
text data bss dec hex filename
7031229 2570916 327016 9929161 9781c9 vmlinux-old
7205921 2800052 327016 10332989 9dab3d vmlinux-new
Additionally, remove the EXT3_FS symbol because it is entirely replaced
by EXT4_FS.
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: Javier Martinez Canillas <javier@osg.samsung.com>
The structures and the macros in the header file are not used
anywhere inside the kernel (verified by using grep). The structures
and macros were leftover from the patch
341f1f0aff "staging: lustre: remove
remote client support". Also, removed the include statements for
lustre_eacl.h.
Signed-off-by: Gargi Sharma <gs051095@gmail.com>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Reviewed-by: James Simmons <jsimmons@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The structure is used as an argument to module_param macro. This
macro calls a bunch of other macros and finally assigns the instance
of the kernel_param_ops structure to the const struct
kernel_param_ops* field of a variable of type kernel_param. Hence,
const can be added to the structure.
Coccinelle Script:
@r disable optional_qualifier@
identifier i;
position p;
@@
static struct kernel_param_ops i@p = { ... };
@ok1@
identifier r.i;
expression e;
position p;
@@
e = i@p
@script:python s@
i << r.i;
t;
@@
coccinelle.t = i[10:];
@ok2@
declarer name module_param;
expression e1,e2;
position p;
@@
module_param(e1,s.t@p,e2);
@bad@
position p != {r.p,ok1.p,ok2.p};
identifier r.i;
@@
e@i@p
@depends on !bad disable optional_qualifier@
identifier r.i;
@@
static
+const
struct kernel_param_ops i = { ... };
Signed-off-by: Gargi Sharma <gs051095@gmail.com>
Reviewed-by: James Simmons <jsimmons@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Pull idr fix (and new tests) from Matthew Wilcox:
"One urgent patch in here; freeing the correct IDA bitmap.
Everything else is changes to the test suite"
* 'idr-4.11' of git://git.infradead.org/users/willy/linux-dax:
radix tree test suite: Specify -m32 in LDFLAGS too
ida: Free correct IDA bitmap
radix tree test suite: Depend on Makefile and quieten grep
radix tree test suite: Fix build with --as-needed
radix tree test suite: Build 32 bit binaries
radix tree test suite: Add performance test for radix_tree_join()
radix tree test suite: Add performance test for radix_tree_split()
radix tree test suite: Add performance benchmarks
radix tree test suite: Add test for radix_tree_clear_tags()
radix tree test suite: Add tests for ida_simple_get() and ida_simple_remove()
radix tree test suite: Add test for idr_get_next()
Even when using the PHY framework, we need the elbi_base. Before this
patch, we didn't initialize elbi_base, which caused NULL pointer
dereferences later.
Fixes: e7cd7ef58e ("PCI: exynos: Support the PHY generic framework")
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Five fairly small fixes for things that went in this cycle.
A fairly large patch to rework the CAS logic on Power9, necessitated by a late
change to the firmware API, and we can't boot without it.
Three fixes going to stable, allowing more instructions to be emulated on LE,
fixing a boot crash on 32-bit Freescale BookE machines, and the OPAL XICS
workaround.
And a patch from me to sort the selects under CONFIG PPC. Annoying churn, but
worth it in the long run, and best for it to go in now to avoid conflicts.
Thanks to:
Alexey Kardashevskiy, Anton Blanchard, Balbir Singh, Gautham R. Shenoy,
Laurentiu Tudor, Nicholas Piggin, Paul Mackerras, Ravi Bangoria, Sachin Sant,
Shile Zhang, Suraj Jitindar Singh.
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Merge tag 'powerpc-4.11-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fixes from Michael Ellerman:
"Five fairly small fixes for things that went in this cycle.
A fairly large patch to rework the CAS logic on Power9, necessitated
by a late change to the firmware API, and we can't boot without it.
Three fixes going to stable, allowing more instructions to be emulated
on LE, fixing a boot crash on 32-bit Freescale BookE machines, and the
OPAL XICS workaround.
And a patch from me to sort the selects under CONFIG PPC. Annoying
churn, but worth it in the long run, and best for it to go in now to
avoid conflicts.
Thanks to:
Alexey Kardashevskiy, Anton Blanchard, Balbir Singh, Gautham R.
Shenoy, Laurentiu Tudor, Nicholas Piggin, Paul Mackerras, Ravi
Bangoria, Sachin Sant, Shile Zhang, Suraj Jitindar Singh"
* tag 'powerpc-4.11-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc: Sort the selects under CONFIG_PPC
powerpc/64: Fix L1D cache shape vector reporting L1I values
powerpc/64: Avoid panic during boot due to divide by zero in init_cache_info()
powerpc: Update to new option-vector-5 format for CAS
powerpc: Parse the command line before calling CAS
powerpc/xics: Work around limitations of OPAL XICS priority handling
powerpc/64: Fix checksum folding in csum_add()
powerpc/powernv: Fix opal tracepoints with JUMP_LABEL=n
powerpc/booke: Fix boot crash due to null hugepd
powerpc: Fix compiling a BE kernel with a powerpc64le toolchain
selftest/powerpc: Fix false failures for skipped tests
powerpc/powernv: Fix bug due to labeling ambiguity in power_enter_stop
powerpc/64: Invalidate process table caching after setting process table
powerpc: emulate_step() tests for load/store instructions
powerpc: Emulation support for load/store instructions on LE
Extend the pwm-beeper driver to support customized frequency for SND_BELL
from device properties.
Signed-off-by: Guan Ben <ben.guan@cn.bosch.com>
Signed-off-by: Mark Jonas <mark.jonas@de.bosch.com>
Signed-off-by: Heiko Schocher <hs@denx.de>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Introduce dm_bufio_set_sector_offset() interface to allow setting a
sector offset for a dm-bufio client. This is a prereq for the DM
integrity target.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Milan Broz <gmazyland@gmail.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Add DM_TARGET_INTEGRITY flag that specifies bio integrity metadata is
not inherited but implemented in the target itself.
Signed-off-by: Milan Broz <gmazyland@gmail.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
The cache policy interfaces have been updated to work well with the new
bio-prison v2 interface's ability to queue work immediately (promotion,
demotion, etc) -- overriding benefit being reduced latency on processing
IO through the cache. Previously such work would be left for the DM
cache core to queue on various lists and then process in batches later
-- this caused a serious delay in latency for IO driven by the cache.
The background tracker code was factored out so that all cache policies
can make use of it.
Also, the "cleaner" policy has been removed and is now a variant of the
smq policy that simply disallows migrations.
Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Pull swiotlb updates from Konrad Rzeszutek Wilk:
"Two tiny implementations of the DMA API for callback in ARM (for Xen)"
* 'stable/for-linus-4.11' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/swiotlb:
swiotlb-xen: implement xen_swiotlb_get_sgtable callback
swiotlb-xen: implement xen_swiotlb_dma_mmap callback
Michael's patch to use the default make rule for linking and the patch
from Rehas to use -m32 if building a 32-bit test-suite on a 64-bit
platform don't work well together.
Reported-by: Rehas Sachdeva <aquannie@gmail.com>
Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
