Added docbook info regarding Display State Buffer(DSB) which
is added from gen12 onwards to batch submit display HW programming.
v1: Initial version as RFC.
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Shashank Sharma <shashank.sharma@intel.com>
Reviewed-by: Shashank Sharma <shashank.sharma@intel.com>
Signed-off-by: Animesh Manna <animesh.manna@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190920115930.27829-11-animesh.manna@intel.com
Gamma lut programming can be programmed using DSB
where bulk register programming can be done using indexed
register write which takes number of data and the mmio offset
to be written.
Currently enabled for 12-bit gamma LUT which is enabled by
default and later 8-bit/10-bit will be enabled in future
based on need.
v1: Initial version.
v2: Directly call dsb-api at callsites. (Jani)
v3:
- modified the code as per single dsb instance per crtc. (Shashank)
- Added dsb get/put call in platform specific load_lut hook. (Jani)
- removed dsb pointer from dev_priv. (Jani)
v4: simplified code by dropping ref-count implementation. (Shashank)
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Shashank Sharma <shashank.sharma@intel.com>
Signed-off-by: Animesh Manna <animesh.manna@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20190920115930.27829-9-animesh.manna@intel.com
Batch buffer will be created through dsb-reg-write function which can have
single/multiple request based on usecase and once the buffer is ready
commit function will trigger the execution of the batch buffer. All
the registers will be updated simultaneously.
v1: Initial version.
v2: Optimized code few places. (Chris)
v3: USed DRM_ERROR for dsb head/tail programming failure. (Shashank)
v4: reset ins_start_offset after commit. (Jani)
Cc: Imre Deak <imre.deak@intel.com>
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Shashank Sharma <shashank.sharma@intel.com>
Reviewed-by: Shashank Sharma <shashank.sharma@intel.com>
Signed-off-by: Animesh Manna <animesh.manna@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190920115930.27829-8-animesh.manna@intel.com
DSB will be used for performance improvement for some special scenario.
DSB engine will be enabled based on need and after completion of its work
will be disabled. Api added for enable/disable operation by using DSB_CTRL
register.
v1: Initial version.
v2: POSTING_READ added after writing control register. (Shashank)
v3: cosmetic changes done. (Shashank)
Cc: Michel Thierry <michel.thierry@intel.com>
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Shashank Sharma <shashank.sharma@intel.com>
Reviewed-by: Shashank Sharma <shashank.sharma@intel.com>
Signed-off-by: Animesh Manna <animesh.manna@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190920115930.27829-7-animesh.manna@intel.com
As per bspec check for DSB status before programming any
of its register. Inline function added to check the dsb status.
Cc: Michel Thierry <michel.thierry@intel.com>
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Shashank Sharma <shashank.sharma@intel.com>
Reviewed-by: Shashank Sharma <shashank.sharma@intel.com>
Signed-off-by: Animesh Manna <animesh.manna@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190920115930.27829-6-animesh.manna@intel.com
DSB can program large set of data through indexed register write
(opcode 0x9) in one shot. DSB feature can be used for bulk register
programming e.g. gamma lut programming, HDR meta data programming.
v1: initial version.
v2: simplified code by using ALIGN(). (Chris)
v3: ascii table added as code comment. (Shashank)
v4: cosmetic changes done. (Shashank)
v5: reset ins_start_offset. (Jani)
v6: update ins_start_offset in inel_dsb_reg_write.
Cc: Shashank Sharma <shashank.sharma@intel.com>
Cc: Imre Deak <imre.deak@intel.com>
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: Shashank Sharma <shashank.sharma@intel.com>
Signed-off-by: Animesh Manna <animesh.manna@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190920115930.27829-5-animesh.manna@intel.com
DSB support single register write through opcode 0x1. Generic
api created which accumulate all single register write in a batch
buffer and once DSB is triggered, it will program all the registers
at the same time.
v1: Initial version.
v2: Unused macro removed and cosmetic changes done. (Shashank)
v3: set free_pos to zero in dsb-put() instead dsb-get() and
a cosmetic change. (Shashank)
v4: macro of indexed-write is moved. (Shashank)
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Shashank Sharma <shashank.sharma@intel.com>
Reviewed-by: Shashank Sharma <shashank.sharma@intel.com>
Signed-off-by: Animesh Manna <animesh.manna@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190920115930.27829-4-animesh.manna@intel.com
This patch adds a function, which will internally get the gem buffer
for DSB engine. The GEM buffer is from global GTT, and is mapped into
CPU domain, contains the data + opcode to be feed to DSB engine.
v1: Initial version.
v2:
- removed some unwanted code. (Chris)
- Used i915_gem_object_create_internal instead of _shmem. (Chris)
- cmd_buf_tail removed and can be derived through vma object. (Chris)
v3: vma realeased if i915_gem_object_pin_map() failed. (Shashank)
v4: for simplification and based on current usage added single dsb
object in intel_crtc. (Shashank)
v5: seting NULL to cmd_buf moved outside of mutex in dsb-put(). (Shashank)
v6:
- refcount machanism added.
- Used atomic_add_return and atomic_dec_and_test instead of
atomic_inc and atomic_dec. (Jani)
Cc: Imre Deak <imre.deak@intel.com>
Cc: Michel Thierry <michel.thierry@intel.com>
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Shashank Sharma <shashank.sharma@intel.com>
Signed-off-by: Animesh Manna <animesh.manna@intel.com>
[Jani: added #include <linux/types.h> while pushing]
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190920115930.27829-3-animesh.manna@intel.com
Display State Buffer(DSB) is a new hardware capability, introduced
in GEN12 display. DSB allows a driver to batch-program display HW
registers.
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Shashank Sharma <shashank.sharma@intel.com>
Reviewed-by: Shashank Sharma <shashank.sharma@intel.com>
Signed-off-by: Animesh Manna <animesh.manna@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190920115930.27829-2-animesh.manna@intel.com
For icl+, have hw read out to create hw blob of gamma
lut values. icl+ platforms supports multi segmented gamma
mode by default, add hw lut creation for this mode.
This will be used to validate gamma programming using dsb
(display state buffer) which is a tgl specific feature.
Major change done-removal of readouts of coarse and fine segments
because PAL_PREC_DATA register isn't giving propoer values.
State checker limited only to "fine segment"
v2: -readout code for multisegmented gamma has to come
up with some intermediate entries that aren't preserved
in hardware (Jani N)
-linear interpolation (Ville)
-moved common code to check gamma_enable to specific funcs,
since icl doesn't support that
v3: -use u16 instead of __u16 [Jani N]
-used single lut [Jani N]
-improved and more readable for loops [Jani N]
-read values directly to actual locations and then fill gaps [Jani N]
-moved cleaning to patch 1 [Jani N]
-renamed icl_read_lut_multi_seg() to icl_read_lut_multi_segment to
make it similar to icl_load_luts()
-renamed icl_compute_interpolated_gamma_blob() to
icl_compute_interpolated_gamma_lut_values() more sensible, I guess
v4: -removed interpolated func for creating gamma lut values
-removed readouts of fine and coarse segments, failure to read PAL_PREC_DATA
correctly
Signed-off-by: Swati Sharma <swati2.sharma@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1569096654-24433-3-git-send-email-swati2.sharma@intel.com
There are two problems in dcache_readdir() - one is that lockless traversal
of the list needs non-trivial cooperation of d_alloc() (at least a switch
to list_add_rcu(), and probably more than just that) and another is that
it assumes that no removal will happen without the directory locked exclusive.
Said assumption had always been there, never had been stated explicitly and
is violated by several places in the kernel (devpts and selinuxfs).
* replacement of next_positive() with different calling conventions:
it returns struct list_head * instead of struct dentry *; the latter is
passed in and out by reference, grabbing the result and dropping the original
value.
* scan is under ->d_lock. If we run out of timeslice, cursor is moved
after the last position we'd reached and we reschedule; then the scan continues
from that place. To avoid livelocks between multiple lseek() (with cursors
getting moved past each other, never reaching the real entries) we always
skip the cursors, need_resched() or not.
* returned list_head * is either ->d_child of dentry we'd found or
->d_subdirs of parent (if we got to the end of the list).
* dcache_readdir() and dcache_dir_lseek() switched to new helper.
dcache_readdir() always holds a reference to dentry passed to dir_emit() now.
Cursor is moved to just before the entry where dir_emit() has failed or into
the very end of the list, if we'd run out.
* move_cursor() eliminated - it had sucky calling conventions and
after fixing that it became simply list_move() (in lseek and scan_positives)
or list_move_tail() (in readdir).
All operations with the list are under ->d_lock now, and we do not
depend upon having all file removals done with parent locked exclusive
anymore.
Cc: stable@vger.kernel.org
Reported-by: "zhengbin (A)" <zhengbin13@huawei.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This patch corrects the SPDX License Identifier style
in header file for Distributed Switch Architecture drivers.
For C header files Documentation/process/license-rules.rst
mandates C-like comments (opposed to C source files where
C++ style should be used)
Changes made by using a script provided by Joe Perches here:
https://lkml.org/lkml/2019/2/7/46.
Suggested-by: Joe Perches <joe@perches.com>
Signed-off-by: Nishad Kamdar <nishadkamdar@gmail.com>
Reviewed-by: Vivien Didelot <vivien.didelot@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
This patch corrects the SPDX License Identifier style
in header file for Broadcom BCM53xx managed switch driver.
For C header files Documentation/process/license-rules.rst
mandates C-like comments (opposed to C source files where
C++ style should be used)
Changes made by using a script provided by Joe Perches here:
https://lkml.org/lkml/2019/2/7/46.
Suggested-by: Joe Perches <joe@perches.com>
Signed-off-by: Nishad Kamdar <nishadkamdar@gmail.com>
Reviewed-by: Vivien Didelot <vivien.didelot@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
We need to set the error code on this path. Otherwise it probably
results in a NULL dereference down the line.
Fixes: aa3198819b ("ionic: Add RSS support")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
If CONFIG_ENA_ETHERNET=y and CONFIG_DIMLIB=n,
below erros can be found:
drivers/net/ethernet/amazon/ena/ena_netdev.o: In function `ena_dim_work':
ena_netdev.c:(.text+0x21cc): undefined reference to `net_dim_get_rx_moderation'
ena_netdev.c:(.text+0x21cc): relocation truncated to
fit: R_AARCH64_CALL26 against undefined symbol `net_dim_get_rx_moderation'
drivers/net/ethernet/amazon/ena/ena_netdev.o: In function `ena_io_poll':
ena_netdev.c:(.text+0x7bd4): undefined reference to `net_dim'
ena_netdev.c:(.text+0x7bd4): relocation truncated to fit:
R_AARCH64_CALL26 against undefined symbol `net_dim'
After commit 282faf61a0 ("net: ena: switch to dim algorithm for rx adaptive
interrupt moderation"), it introduces dim algorithm, which configured by CONFIG_DIMLIB.
So, this patch is to select DIMLIB for ENA_ETHERNET.
Fixes: 282faf61a0 ("net: ena: switch to dim algorithm for rx adaptive interrupt moderation")
Signed-off-by: Mao Wenan <maowenan@huawei.com>
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
The platform_get_resource() function doesn't return error pointers, it
returns NULL. The way this is normally done, is that we pass the NULL
resource to devm_ioremap_resource() and then check for errors from that.
See the comment in front of devm_ioremap_resource() for more details.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Talel Shenhar <talel@amazon.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
- support for the Smart Tech panel, from Benjamin Tissoires
- hid-multitouch is no longer filtering mice node creation,
from Benjamin Tissoires
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
- extension of supported usage range for customer page, as some Logitech
devices are actually making use of it. From Olivier Gay.
- support for Lightspeed and G700(s) receivers from Filipe Laíns and
Benjamin Tissoires
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
- syzbot memory corruption fixes for hidraw, Prodikeys, Logitech and Sony
drivers from Alan Stern and Roderick Colenbrander
- error handling fix for Logitech unifying receivers from Hans de Goede
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Core:
* Ensure HWMON devices are registered with valid names
* Fix device wakeup code
Drivers:
* bq25890_charger: Add BQ25895 support
* axp288_fuel_gauge: Add Minix Neo Z83-4 to blacklist
* sc27xx: improve battery calibration
* misc. small fixes all over drivers
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Merge tag 'for-v5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply
Pull power supply and reset updates from Sebastian Reichel:
"Core:
- Ensure HWMON devices are registered with valid names
- Fix device wakeup code
Drivers:
- bq25890_charger: Add BQ25895 support
- axp288_fuel_gauge: Add Minix Neo Z83-4 to blacklist
- sc27xx: improve battery calibration
- misc small fixes all over drivers"
* tag 'for-v5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply: (24 commits)
power: supply: cpcap-charger: Enable vbus boost voltage
power: supply: sc27xx: Add POWER_SUPPLY_PROP_CALIBRATE attribute
power: supply: sc27xx: Optimize the battery capacity calibration
power: supply: sc27xx: Make sure the alarm capacity is larger than 0
power: supply: sc27xx: Fix the the accuracy issue of coulomb calculation
power: supply: sc27xx: Fix conditon to enable the FGU interrupt
power: supply: sc27xx: Add POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN attribute
power: supply: max77650: add MODULE_ALIAS()
power: supply: isp1704: remove redundant assignment to variable ret
power: supply: bq25890_charger: Add the BQ25895 part
power: supply: sc27xx: Replace devm_add_action() followed by failure action with devm_add_action_or_reset()
power: supply: sc27xx: Introduce local variable 'struct device *dev'
power: reset: reboot-mode: Fix author email format
power: supply: ab8500: remove set but not used variables 'vbup33_vrtcn' and 'bup_vch_range'
power: supply: max17042_battery: Fix a typo in function names
power: reset: gpio-restart: Fix typo when gpio reset is not found
power: supply: Init device wakeup after device_add()
power: supply: ab8500_charger: Mark expected switch fall-through
power: supply: sbs-battery: only return health when battery present
MAINTAINERS: N900: Remove isp1704_charger.h record
...
Commit feb4eb060c ("firmware: bcm47xx_nvram: Correct size_t printf
format") was wrong, and changed a printout of 'header.len' - which is an
u32 type - to use '%zu'.
It apparently did pattern matching on the other case, where it printed
out 'nvram_len', which is indeed of type 'size_t'.
Rather than undoing the change, this just makes it use the variable that
the change seemed to expect to be used.
Cc: Florian Fainelli <f.fainelli@gmail.com>
Cc: Philippe Mathieu-Daudé <f4bug@amsat.org>
Cc: Paul Burton <paul.burton@mips.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
It's an unusual configuration, and was apparently never tested, and not
caught in linux-next because of a combination of travels and it making
it into the tree too late.
The fix is to simply move the #define to outside the CONFIG_MODULE
section, since MODULE_INFO() will do the right thing.
Cc: Martijn Coenen <maco@android.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Matthias Maennich <maennich@google.com>
Cc: Jessica Yu <jeyu@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This contains updates to make the rpmsg sample driver more useful, fixes
the naming of GLINK devices to avoid naming collisions and a few minor
bug fixes. It also updates MAINTAINERS to reflect the move to
kernel.org.
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Merge tag 'rpmsg-v5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/andersson/remoteproc
Pull rpmsg updates from Bjorn Andersson:
"This contains updates to make the rpmsg sample driver more useful,
fixes the naming of GLINK devices to avoid naming collisions and a few
minor bug fixes. It also updates MAINTAINERS to reflect the move to
kernel.org"
* tag 'rpmsg-v5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/andersson/remoteproc:
rpmsg: glink-smem: Name the edge based on parent remoteproc
rpmsg: glink: Use struct_size() helper
rpmsg: virtio_rpmsg_bus: replace "%p" with "%pK"
MAINTAINERS: rpmsg: fix git tree location
rpmsg: core: fix comments
samples/rpmsg: Introduce a module parameter for message count
samples/rpmsg: Replace print_hex_dump() with print_hex_dump_debug()
This exposes the remoteproc's name in sysfs, allows stm32 to enter
platform standby and provides bug fixes for stm32 and Qualcomm's modem
remoteproc drivers. Finally it updates MAINTAINERS to reflect the move
to kernel.org.
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Merge tag 'rproc-v5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/andersson/remoteproc
Pull remoteproc updates from Bjorn Andersson:
"This exposes the remoteproc's name in sysfs, allows stm32 to enter
platform standby and provides bug fixes for stm32 and Qualcomm's modem
remoteproc drivers. Finally it updates MAINTAINERS to reflect the move
to kernel.org"
* tag 'rproc-v5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/andersson/remoteproc:
MAINTAINERS: remoteproc: update git tree location
remoteproc: Remove dev_err() usage after platform_get_irq()
remoteproc: stm32: manage the get_irq probe defer case
remoteproc: stm32: clear MCU PDDS at firmware start
remoteproc: qcom: q6v5-mss: fixup q6v5_pds_enable error handling
remoteproc: Add a sysfs interface for name
remoteproc: qcom: Move glink_ssr notification after stop
This includes DT support thanks to Srini and more work done by Intel
(Pierre) on improving cadence and intel support.
Details:
- Add DT bindings and DT support in core
- Add debugfs support for soundwire properties
- Improvements on streaming handling to core
- Improved handling of Cadence module
- More updates and improvements to Intel driver
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Merge tag 'soundwire-5.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/soundwire
Pull soundwire updates from Vinod Koul:
"This includes DT support thanks to Srini and more work done by Intel
(Pierre) on improving cadence and intel support.
Summary:
- Add DT bindings and DT support in core
- Add debugfs support for soundwire properties
- Improvements on streaming handling to core
- Improved handling of Cadence module
- More updates and improvements to Intel driver"
* tag 'soundwire-5.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/soundwire: (30 commits)
soundwire: stream: make stream name a const pointer
soundwire: Add compute_params callback
soundwire: core: add device tree support for slave devices
dt-bindings: soundwire: add slave bindings
soundwire: bus: set initial value to port_status
soundwire: intel: handle disabled links
soundwire: intel: add debugfs register dump
soundwire: cadence_master: add debugfs register dump
soundwire: add debugfs support
soundwire: intel: remove unused variables
soundwire: intel: move shutdown() callback and don't export symbol
soundwire: cadence_master: add kernel parameter to override interrupt mask
soundwire: intel_init: add kernel module parameter to filter out links
soundwire: cadence_master: fix divider setting in clock register
soundwire: cadence_master: make use of mclk_freq property
soundwire: intel: read mclk_freq property from firmware
soundwire: add new mclk_freq field for properties
soundwire: stream: remove unnecessary variable initializations
soundwire: stream: fix disable sequence
soundwire: include mod_devicetable.h to avoid compiling warnings
...
Summary of modules changes for the 5.4 merge window:
- Introduce exported symbol namespaces.
This new feature allows subsystem maintainers to partition and
categorize their exported symbols into explicit namespaces. Module
authors are now required to import the namespaces they need.
Some of the main motivations of this feature include: allowing kernel
developers to better manage the export surface, allow subsystem
maintainers to explicitly state that usage of some exported symbols
should only be limited to certain users (think: inter-module or
inter-driver symbols, debugging symbols, etc), as well as more easily
limiting the availability of namespaced symbols to other parts of the
kernel. With the module import requirement, it is also easier to spot
the misuse of exported symbols during patch review. Two new macros are
introduced: EXPORT_SYMBOL_NS() and EXPORT_SYMBOL_NS_GPL(). The API is
thoroughly documented in Documentation/kbuild/namespaces.rst.
- Some small code and kbuild cleanups here and there.
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Merge tag 'modules-for-v5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux
Pull modules updates from Jessica Yu:
"The main bulk of this pull request introduces a new exported symbol
namespaces feature. The number of exported symbols is increasingly
growing with each release (we're at about 31k exports as of 5.3-rc7)
and we currently have no way of visualizing how these symbols are
"clustered" or making sense of this huge export surface.
Namespacing exported symbols allows kernel developers to more
explicitly partition and categorize exported symbols, as well as more
easily limiting the availability of namespaced symbols to other parts
of the kernel. For starters, we have introduced the USB_STORAGE
namespace to demonstrate the API's usage. I have briefly summarized
the feature and its main motivations in the tag below.
Summary:
- Introduce exported symbol namespaces.
This new feature allows subsystem maintainers to partition and
categorize their exported symbols into explicit namespaces. Module
authors are now required to import the namespaces they need.
Some of the main motivations of this feature include: allowing
kernel developers to better manage the export surface, allow
subsystem maintainers to explicitly state that usage of some
exported symbols should only be limited to certain users (think:
inter-module or inter-driver symbols, debugging symbols, etc), as
well as more easily limiting the availability of namespaced symbols
to other parts of the kernel.
With the module import requirement, it is also easier to spot the
misuse of exported symbols during patch review.
Two new macros are introduced: EXPORT_SYMBOL_NS() and
EXPORT_SYMBOL_NS_GPL(). The API is thoroughly documented in
Documentation/kbuild/namespaces.rst.
- Some small code and kbuild cleanups here and there"
* tag 'modules-for-v5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux:
module: Remove leftover '#undef' from export header
module: remove unneeded casts in cmp_name()
module: move CONFIG_UNUSED_SYMBOLS to the sub-menu of MODULES
module: remove redundant 'depends on MODULES'
module: Fix link failure due to invalid relocation on namespace offset
usb-storage: export symbols in USB_STORAGE namespace
usb-storage: remove single-use define for debugging
docs: Add documentation for Symbol Namespaces
scripts: Coccinelle script for namespace dependencies.
modpost: add support for generating namespace dependencies
export: allow definition default namespaces in Makefiles or sources
module: add config option MODULE_ALLOW_MISSING_NAMESPACE_IMPORTS
modpost: add support for symbol namespaces
module: add support for symbol namespaces.
export: explicitly align struct kernel_symbol
module: support reading multiple values per modinfo tag
- fix various clang build and cppcheck issues
- switch ARM to use new common outgoing-CPU-notification code
- add some additional explanation about the boot code
- kbuild "make clean" fixes
- get rid of another "(____ptrval____)", this time for the VDSO code
- avoid treating cache maintenance faults as a write
- add a frame pointer unwinder implementation for clang
- add EDAC support for Aurora L2 cache
- improve robustness of adjust_lowmem_bounds() finding the bounds of
lowmem.
- add reset control for AMBA primecell devices
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Merge tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm
Pull ARM updates from Russell King:
- fix various clang build and cppcheck issues
- switch ARM to use new common outgoing-CPU-notification code
- add some additional explanation about the boot code
- kbuild "make clean" fixes
- get rid of another "(____ptrval____)", this time for the VDSO code
- avoid treating cache maintenance faults as a write
- add a frame pointer unwinder implementation for clang
- add EDAC support for Aurora L2 cache
- improve robustness of adjust_lowmem_bounds() finding the bounds of
lowmem.
- add reset control for AMBA primecell devices
* tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm: (24 commits)
ARM: 8906/1: drivers/amba: add reset control to amba bus probe
ARM: 8905/1: Emit __gnu_mcount_nc when using Clang 10.0.0 or newer
ARM: 8904/1: skip nomap memblocks while finding the lowmem/highmem boundary
ARM: 8903/1: ensure that usable memory in bank 0 starts from a PMD-aligned address
ARM: 8891/1: EDAC: armada_xp: Add support for more SoCs
ARM: 8888/1: EDAC: Add driver for the Marvell Armada XP SDRAM and L2 cache ECC
ARM: 8892/1: EDAC: Add missing debugfs_create_x32 wrapper
ARM: 8890/1: l2x0: add marvell,ecc-enable property for aurora
ARM: 8889/1: dt-bindings: document marvell,ecc-enable binding
ARM: 8886/1: l2x0: support parity-enable/disable on aurora
ARM: 8885/1: aurora-l2: add defines for parity and ECC registers
ARM: 8887/1: aurora-l2: add prefix to MAX_RANGE_SIZE
ARM: 8902/1: l2c: move cache-aurora-l2.h to asm/hardware
ARM: 8900/1: UNWINDER_FRAME_POINTER implementation for Clang
ARM: 8898/1: mm: Don't treat faults reported from cache maintenance as writes
ARM: 8896/1: VDSO: Don't leak kernel addresses
ARM: 8895/1: visit mach-* and plat-* directories when cleaning
ARM: 8894/1: boot: Replace open-coded nop with macro
ARM: 8893/1: boot: Explain the 8 nops
ARM: 8876/1: fix O= building with CONFIG_FPE_FASTFPE
...
- boot_mem_map is removed, providing a nice cleanup made possible by the
recent removal of bootmem.
- Some fixes to atomics, in general providing compiler barriers for
smp_mb__{before,after}_atomic plus fixes specific to Loongson CPUs or
MIPS32 systems using cmpxchg64().
- Conversion to the new generic VDSO infrastructure courtesy of Vincenzo
Frascino.
- Removal of undefined behavior in set_io_port_base(), fixing the
behavior of some MIPS kernel configurations when built with recent
clang versions.
- Initial MIPS32 huge page support, functional on at least Ingenic SoCs.
- pte_special() is now supported for some configurations, allowing among
other things generic fast GUP to be used.
- Miscellaneous fixes & cleanups.
And platform specific changes:
- Major improvements to Ingenic SoC support from Paul Cercueil, mostly
enabled by the inclusion of the new TCU (timer-counter unit) drivers
he's spent a very patient year or so working on. Plus some fixes for
X1000 SoCs from Zhou Yanjie.
- Netgear R6200 v1 systems are now supported by the bcm47xx platform.
- DT updates for BMIPS, Lantiq & Microsemi Ocelot systems.
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Merge tag 'mips_5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux
Pull MIPS updates from Paul Burton:
"Main MIPS changes:
- boot_mem_map is removed, providing a nice cleanup made possible by
the recent removal of bootmem.
- Some fixes to atomics, in general providing compiler barriers for
smp_mb__{before,after}_atomic plus fixes specific to Loongson CPUs
or MIPS32 systems using cmpxchg64().
- Conversion to the new generic VDSO infrastructure courtesy of
Vincenzo Frascino.
- Removal of undefined behavior in set_io_port_base(), fixing the
behavior of some MIPS kernel configurations when built with recent
clang versions.
- Initial MIPS32 huge page support, functional on at least Ingenic
SoCs.
- pte_special() is now supported for some configurations, allowing
among other things generic fast GUP to be used.
- Miscellaneous fixes & cleanups.
And platform specific changes:
- Major improvements to Ingenic SoC support from Paul Cercueil,
mostly enabled by the inclusion of the new TCU (timer-counter unit)
drivers he's spent a very patient year or so working on. Plus some
fixes for X1000 SoCs from Zhou Yanjie.
- Netgear R6200 v1 systems are now supported by the bcm47xx platform.
- DT updates for BMIPS, Lantiq & Microsemi Ocelot systems"
* tag 'mips_5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux: (89 commits)
MIPS: Detect bad _PFN_SHIFT values
MIPS: Disable pte_special() for MIPS32 with RiXi
MIPS: ralink: deactivate PCI support for SOC_MT7621
mips: compat: vdso: Use legacy syscalls as fallback
MIPS: Drop Loongson _CACHE_* definitions
MIPS: tlbex: Remove cpu_has_local_ebase
MIPS: tlbex: Simplify r3k check
MIPS: Select R3k-style TLB in Kconfig
MIPS: PCI: refactor ioc3 special handling
mips: remove ioremap_cachable
mips/atomic: Fix smp_mb__{before,after}_atomic()
mips/atomic: Fix loongson_llsc_mb() wreckage
mips/atomic: Fix cmpxchg64 barriers
MIPS: Octeon: remove duplicated include from dma-octeon.c
firmware: bcm47xx_nvram: Allow COMPILE_TEST
firmware: bcm47xx_nvram: Correct size_t printf format
MIPS: Treat Loongson Extensions as ASEs
MIPS: Remove dev_err() usage after platform_get_irq()
MIPS: dts: mscc: describe the PTP ready interrupt
MIPS: dts: mscc: describe the PTP register range
...
This causes kernel crash when testing lima driver.
Cc: Christian König <christian.koenig@amd.com>
Fixes: b8c036dfc6 ("dma-buf: simplify reservation_object_get_fences_rcu a bit")
Signed-off-by: Qiang Yu <yuq825@gmail.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20190922074900.853-1-yuq825@gmail.com
perf tests:
Jiri Olsa:
- Fix 'make -C tools/perf build-test' static build entry.
perf record:
Jiri Olsa:
- Fix segfault in cpu_cache_level__read() when reading CPU topology.
session:
Mamatha Inamdar:
- Properly propagate error when reading a perf.data file, it may
not exist or the user may not have permissions, etc.
perf probe:
Masami Hiramatsu:
- Skip same probe address for a given line.
- Clear tev->nargs in clear_probe_trace_event(), fixing segfault.
tools headers UAPI:
Arnaldo Carvalho de Melo:
- Sync headers, among them prctl.h, that introduces two new options
that are now supported in the 'perf trace' prctl syscall args
beautifiers.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Merge tag 'perf-urgent-for-mingo-5.4-20190921' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent
Pull perf/urgent fixes from Arnaldo Carvalho de Melo:
perf tests:
Jiri Olsa:
- Fix 'make -C tools/perf build-test' static build entry.
perf record:
Jiri Olsa:
- Fix segfault in cpu_cache_level__read() when reading CPU topology.
session:
Mamatha Inamdar:
- Properly propagate error when reading a perf.data file, it may
not exist or the user may not have permissions, etc.
perf probe:
Masami Hiramatsu:
- Skip same probe address for a given line.
- Clear tev->nargs in clear_probe_trace_event(), fixing segfault.
tools headers UAPI:
Arnaldo Carvalho de Melo:
- Sync headers, among them prctl.h, that introduces two new options
that are now supported in the 'perf trace' prctl syscall args
beautifiers.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Use 'skb_put_data()' instead of rewritting it.
This improves readability.
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Putting a struct stmmac_rss object on the stack is a bad idea,
as it exceeds the warning limit for a stack frame on 32-bit architectures:
drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c:1221:12: error: stack frame size of 1208 bytes in function '__stmmac_test_l3filt' [-Werror,-Wframe-larger-than=]
drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c:1338:12: error: stack frame size of 1208 bytes in function '__stmmac_test_l4filt' [-Werror,-Wframe-larger-than=]
As the object is the trivial empty case, change the called function
to accept a NULL pointer to mean the same thing and remove the
large variable in the two callers.
Fixes: 4647e02119 ("net: stmmac: selftests: Add selftest for L3/L4 Filters")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Jose Abreu <joabreu@synopsys.com>
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
If CONFIG_NET_DSA_SJA1105_TAS=y and CONFIG_NET_SCH_TAPRIO=n,
below error can be found:
drivers/net/dsa/sja1105/sja1105_tas.o: In function `sja1105_setup_tc_taprio':
sja1105_tas.c:(.text+0x318): undefined reference to `taprio_offload_free'
sja1105_tas.c:(.text+0x590): undefined reference to `taprio_offload_get'
drivers/net/dsa/sja1105/sja1105_tas.o: In function `sja1105_tas_teardown':
sja1105_tas.c:(.text+0x610): undefined reference to `taprio_offload_free'
make: *** [vmlinux] Error 1
sja1105_tas needs tc-taprio, so this patch add the dependency for it.
Fixes: 317ab5b86c ("net: dsa: sja1105: Configure the Time-Aware Scheduler via tc-taprio offload")
Signed-off-by: Mao Wenan <maowenan@huawei.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Similar to commit 8b4c3cdd9d
("net: sched: Add policy validation for tc attributes"), we need
to add proper policy validation for TC action attributes too.
Cc: David Ahern <dsahern@gmail.com>
Cc: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
The TCA_KIND attribute is of NLA_STRING which does not check
the NUL char. KMSAN reported an uninit-value of TCA_KIND which
is likely caused by the lack of NUL.
Change it to NLA_NUL_STRING and add a max len too.
Fixes: 8b4c3cdd9d ("net: sched: Add policy validation for tc attributes")
Reported-and-tested-by: syzbot+618aacd49e8c8b8486bd@syzkaller.appspotmail.com
Cc: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Reviewed-by: David Ahern <dsahern@gmail.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
The ARM netx platform got removed in 5.3, so this driver
is now useless.
Reported-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
As the endpoint is unregistered there might still be work pending to
handle incoming messages, which will result in a use after free
scenario. The plan is to remove the rx_worker, but until then (and for
stable@) ensure that the work is stopped before the node is freed.
Fixes: bdabad3e36 ("net: Add Qualcomm IPC router")
Cc: stable@vger.kernel.org
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
According to the DP83865 datasheet "the 10 Mbps HDX loopback can be
disabled in the expanded memory register 0x1C0.1". The driver erroneously
used bit 0 instead of bit 1.
Fixes: 4621bf1298 ("phy: Add file missed in previous commit.")
Signed-off-by: Peter Mamonov <pmamonov@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
