André Draszik [Wed, 9 Apr 2025 20:37:27 +0000 (21:37 +0100)]
mfd: sec: Update includes to add missing and remove superfluous ones
This driver misses to include some of the respective headers of some of
the APIs used. It also includes headers that aren't needed (e.g. due to
previous driver rework where includes weren't updated).
It is good practice to directly include all headers used, which avoids
implicit dependencies and spurious build breakage if someone rearranged
headers, as this could cause the implicit includes to be dropped.
Include the relevant headers explicitly and drop superfluous ones.
André Draszik [Wed, 9 Apr 2025 20:37:25 +0000 (21:37 +0100)]
mfd: sec-core: Drop non-existing forward declarations
sec_irq_resume() was removed in commit 6445b84abf91 ("mfd: Add s2mps11
irq driver") and sec_irq_exit() in commit 3dc6f4aaafbe ("mfd: sec: Use
devm_mfd_add_devices and devm_regmap_add_irq_chip") while the
prototypes were left. They should be removed.
André Draszik [Wed, 9 Apr 2025 20:37:22 +0000 (21:37 +0100)]
dt-bindings: mfd: samsung,s2mps11: add s2mpg10
The Samsung S2MPG10 PMIC is similar to the existing PMICs supported by
this binding.
It is a Power Management IC for mobile applications with buck
converters, various LDOs, power meters, RTC, clock outputs, and
additional GPIOs interfaces.
Unlike other Samsung PMICs, communication is not via I2C, but via the
Samsung ACPM firmware, it therefore doesn't need a 'reg' property but
needs to be a child of the ACPM firmware node instead.
S2MPG10 can also act as a system power controller allowing
implementation of a true cold-reset of the system.
Support for the other components like regulators and power meters will
be added in subsequent future patches.
Artur Weber [Sun, 16 Mar 2025 18:18:52 +0000 (19:18 +0100)]
mfd: bcm590xx: Drop unused "id" member of bcm590xx struct
The "id" member of the bcm590xx struct is unused and will be confusing
once we add an actual PMU ID storage value. Drop it; a replacement
will be introduced in a future commit.
Lukas Bulwahn [Tue, 25 Mar 2025 09:21:59 +0000 (10:21 +0100)]
MAINTAINERS: Adjust the file entry in SIEMENS IPC LED DRIVERS
Commit 835a0c10d33b ("leds: Rename simple directory to simatic") renames
the driver's directory to drivers/leds/simatic, but misses to adjust the
SIEMENS IPC LED DRIVERS section in MAINTAINERS.
Hence, ./scripts/get_maintainer.pl --self-test=patterns complains about a
broken reference. Adjust the file entry to this renaming.
Wolfram Sang [Tue, 18 Mar 2025 09:12:12 +0000 (10:12 +0100)]
mfd: tps65010: Use per-client debugfs directory
The I2C core now provides a debugfs entry for each client. Let this
driver use it instead of the root directory. Further improvements by
this change: automatic support of multiple instances.
Wolfram Sang [Tue, 18 Mar 2025 09:13:41 +0000 (10:13 +0100)]
mfd: aat2870: Use per-client debugfs directory
The I2C core now provides a debugfs entry for each client. Let this
driver use it instead of the custom directory in debugfs root. Further
improvements by this change: automatic clean up on removal, support of
multiple instances.
Lee Jones [Thu, 22 May 2025 14:49:34 +0000 (15:49 +0100)]
Merge branches 'ib-firmware-mfd-6.16', 'ib-mfd-clocksource-pwm-6.16', 'ib-mfd-gpio-nvmem-6.16', 'ib-mfd-regulator-6.16' and 'ib-mfd-regulator-6.16-1' into ibs-for-mfd-merged
Artur Weber [Thu, 15 May 2025 14:16:35 +0000 (16:16 +0200)]
regulator: bcm590xx: Add support for BCM59054 regulators
The BCM59056 and BCM59054 are very similar in terms of regulators. Add
the register definitions for the BCM59054 and enable support for it in
the driver.
Artur Weber [Thu, 15 May 2025 14:16:34 +0000 (16:16 +0200)]
regulator: bcm590xx: Rename BCM59056-specific data as such
Previously, the driver used the BCM590XX prefix for register data
specific to the BCM59056. As we will be introducing other regulators
to this driver as well, make the BCM59056-specific values use the
BCM59056 prefix.
Artur Weber [Thu, 15 May 2025 14:16:33 +0000 (16:16 +0200)]
regulator: bcm590xx: Store regulator descriptions in table
Instead of filling in the regulator description programatically,
store the data in a struct. This will make it a bit nicer to
introduce support for other BCM590xx chips besides the BCM59056.
To do this, add a new struct type, bcm590xx_reg_data, to store
all of the necessary information. Drop the old IS_LDO, IS_GPLDO...
macros in favor of the "type" field in this struct. Adapt the
old bcm590xx_reg struct to the new types.
Artur Weber [Thu, 15 May 2025 14:16:31 +0000 (16:16 +0200)]
mfd: bcm590xx: Add PMU ID/revision parsing function
The BCM590xx PMUs have two I2C registers for reading the PMU ID
and revision. The revision is useful for subdevice drivers, since
different revisions may have slight differences in behavior (for
example - BCM59054 has different regulator configurations for
revision A0 and A1).
Check the PMU ID register and make sure it matches the DT compatible.
Fetch the digital and analog revision from the PMUREV register
so that it can be used in subdevice drivers.
Also add some known revision values to bcm590xx.h, for convenience
when writing subdevice drivers.
Artur Weber [Thu, 15 May 2025 14:16:30 +0000 (16:16 +0200)]
mfd: bcm590xx: Add support for multiple device types + BCM59054 compatible
The BCM59054 is another chip from the BCM590xx line of PMUs, commonly
used on devices with the BCM21664/BCM23550 chipsets.
Prepare the BCM590xx driver for supporting other devices by adding the
PMUID register values for supported chip types and store them in the
MFD data struct as "pmu_id". (These will be checked against the actual
PMUID register values in a later commit.)
Then, add a DT compatible for the BCM59054, and provide the PMU ID as
OF match data.
Artur Weber [Thu, 15 May 2025 14:16:28 +0000 (16:16 +0200)]
dt-bindings: mfd: brcm,bcm59056: Convert to YAML
Convert devicetree bindings for the Broadcom BCM59056 PMU MFD from
TXT to YAML format. This patch does not change any functionality;
the bindings remain the same.
The bindings have been split into two parts: the MFD binding and
a separate binding for the regulator node, to simplify the addition
of other models later (which have different regulators).
Add support for STM32MP25 SoC. A new compatible has been added to the
dt-bindings. It represents handle new features, registers and bits
diversity.
It isn't used currently in the driver, as matching is done by retrieving
MFD parent data.
New dedicated capture/compare channels has been added: e.g. a new compare
register for channel 2. Some controls (polarity / cc channel enable) are
handled in CCMR register on this new variant (instead of wavepol bit).
So, Low-power timer can now have up to two PWM outputs. Use device data
from the MFD parent to configure the number of PWM channels e.g. 'npwm'.
Update current get_state() and apply() ops to support either:
- one PWM channel (as on older revision, or LPTIM5 on STM32MP25)
- two PWM channels (e.g. LPTIM1/2/3/4 on STM32MP25 that has the full
feature set)
Introduce new routines to manage common prescaler, reload register and
global enable bit.
clocksource/drivers/stm32-lptimer: Add support for stm32mp25
On stm32mp25, DIER (former IER) must only be modified when the lptimer
is enabled. On earlier SoCs, it must be only be modified when it is
disabled. There's also a new DIEROK flag, to ensure register access
has completed.
Add a new "set_evt" routine to be used on stm32mp25, called depending
on the version register, read by the MFD core (LPTIM_VERR).
Add support for STM32MP25 SoC.
A new hardware configuration register (HWCFGR2) has been added, to gather
number of capture/compare channels, autonomous mode and input capture
capability. The full feature set is implemented in LPTIM1/2/3/4. LPTIM5
supports a smaller set of features. This can now be read from HWCFGR
registers.
Add new registers to the stm32-lptimer.h: CCMR1, CCR2, HWCFGR1/2 and VERR.
Update the stm32_lptimer data struct so signal the number of
capture/compare channels to the child devices.
Also Remove some unused bit masks (CMPOK_ARROK / CMPOKCF_ARROKCF).
dt-bindings: mfd: stm32-lptimer: Add support for stm32mp25
Add a new stm32mp25 compatible to stm32-lptimer dt-bindings, to support
STM32MP25 SoC. Some features has been updated or added to the low-power
timer:
- new capture compare channels
- up to two PWM channels
- PWM input capture
- peripheral interconnect in stm32mp25 has been updated (new triggers).
- registers/bits has been added or revisited (IER access).
So introduce a new compatible to handle this diversity.
André Draszik [Fri, 9 May 2025 13:22:41 +0000 (14:22 +0100)]
nvmem: max77759: Add Maxim MAX77759 NVMEM driver
The Maxim MAX77759 is a companion PMIC for USB Type-C applications and
includes Battery Charger, Fuel Gauge, temperature sensors, USB Type-C
Port Controller (TCPC), NVMEM, and a GPIO expander.
This driver exposes the non volatile memory using the platform device
registered by the core MFD driver.
André Draszik [Fri, 9 May 2025 13:22:40 +0000 (14:22 +0100)]
gpio: max77759: Add Maxim MAX77759 gpio driver
The Maxim MAX77759 is a companion PMIC for USB Type-C applications and
includes Battery Charger, Fuel Gauge, temperature sensors, USB Type-C
Port Controller (TCPC), NVMEM, and a GPIO expander.
This driver supports the GPIO functions using the platform device
registered by the core MFD driver.
André Draszik [Fri, 9 May 2025 13:22:39 +0000 (14:22 +0100)]
mfd: max77759: Add Maxim MAX77759 core driver
The Maxim MAX77759 is a companion PMIC for USB Type-C applications and
includes Battery Charger, Fuel Gauge, temperature sensors, USB Type-C
Port Controller (TCPC), NVMEM, and a GPIO expander.
Fuel Gauge and TCPC have separate and independent I2C addresses,
register maps, and interrupt lines and are therefore excluded from the
MFD core device driver here.
The GPIO and NVMEM interfaces are accessed via specific commands to the
built-in microprocessor. This driver implements an API that client
drivers can use for accessing those.
André Draszik [Tue, 25 Mar 2025 08:27:04 +0000 (08:27 +0000)]
dt-bindings: mfd: Add max77759 binding
The Maxim MAX77759 is a companion PMIC for USB Type-C applications and
includes Battery Charger, Fuel Gauge, temperature sensors, USB Type-C
Port Controller (TCPC), NVMEM, and a GPIO expander.
André Draszik [Tue, 25 Mar 2025 08:27:03 +0000 (08:27 +0000)]
dt-bindings: nvmem: Add max77759 binding
The Maxim MAX77759 is a companion PMIC for USB Type-C applications and
includes Battery Charger, Fuel Gauge, temperature sensors, USB Type-C
Port Controller (TCPC), NVMEM, and a GPIO expander.
André Draszik [Tue, 25 Mar 2025 08:27:02 +0000 (08:27 +0000)]
dt-bindings: gpio: Add max77759 binding
The Maxim MAX77759 is a companion PMIC for USB Type-C applications and
includes Battery Charger, Fuel Gauge, temperature sensors, USB Type-C
Port Controller (TCPC), NVMEM, and a GPIO expander.
Lee Jones [Thu, 1 May 2025 11:42:38 +0000 (12:42 +0100)]
Merge tag 'samsung-drivers-6.16' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/krzk/linux into ib-firmware-mfd-6.16
Samsung SoC drivers for v6.16
Several improvements to Exynos ACPM (Alive Clock and Power Manager)
driver:
1. Handle communication timeous better.
2. Avoid sleeping, so users (PMIC) can still transfer during system
shutdown.
3. Fix reading longer messages from them firmware.
4. Deferred probe improvements.
5. Model the user of ACPM - PMIC - a as child device and export
devm_acpm_get_by_node() for such use case.
Krzysztof Kozlowski [Thu, 24 Apr 2025 20:33:09 +0000 (22:33 +0200)]
firmware: exynos-acpm: Correct kerneldoc and use typical np argument name
Correct kerneldoc warnings after commit a8dc26a0ec43 ("firmware:
exynos-acpm: introduce devm_acpm_get_by_node()") changed the function
prototype:
exynos-acpm.c:672: warning: Function parameter or struct member 'acpm_np' not described in 'acpm_get_by_node'
exynos-acpm.c:672: warning: expecting prototype for acpm_get_by_phandle(). Prototype was for acpm_get_by_node() instead
While touching the lines, change the name of device_node pointer to
'np' to match convention.
The ROHM BD96806 is from the software perspective almost identical to
the ROHM BD96802. The main difference is different voltage tuning
ranges. Add support differentiating these PMICs based on the compatible,
and invoking the regulator driver with correct IC type.
The ROHM BD96805 is from the software perspective almost identical to
the ROHM BD96801. The main difference is different voltage tuning
ranges. Add support differentiating these PMICs based on the compatible,
and invoking the regulator driver with correct IC type.
The ROHM BD96802 PMIC is primarily intended to be used as a companion
PMIC extending the capabilities of the BD96802 but it can be used on
it's own as well. When used as a companion PMIC, the start-up and
shut-down sequences are usually intitiated by the master PMIC using IF
pins.
The BD96802 looks from the digital interface point of view pretty much
like a reduced version of BD96801. It includes only 2 BUCKs and provides
the same error protection/detection mechanisms as the BD96801. Also, the
voltage control logic is same up to the register addresses.
Add support for controlling BD96802 using the BD96801 driver.
The ROHM BD96802 PMIC looks from software point of view a lot like ROHM BD96801 PMIC. Just with reduced number of voltage rails. Both PMICs
provide two physical IRQ lines referred as INTB and ERRB and contain
blocks implementing regulator controls and a weatchdog. Hence it makes
sense to use same MFD core for both PMICs.
Add support for ROHM BD96802 scalable companion PMIC to the BD96801
core driver.
Matti Vaittinen [Tue, 8 Apr 2025 08:45:34 +0000 (11:45 +0300)]
regulator: bd96801: Drop IC name from the IRQ resources
The resources generated in the BD96801 MFD driver are only visible to
the sub-drivers whose resource fields they are added. This makes
abbreviating the resource name with the IC name pointless. It just adds
confusion in those sub-drivers which do not really care the exact model
that generates the IRQ but just want to know the purpose IRQ was
generated for. Thus, as a preparatory fix to simplify adding support for
ROHM BD96802 PMIC the IC name "bd96801-" prefix was dropped from the IRQ
resource names. Adapt the regulator driver to this change.
Matti Vaittinen [Tue, 8 Apr 2025 08:45:16 +0000 (11:45 +0300)]
mfd: bd96801: Drop IC name from the regulator IRQ resources
The resources generated in the BD96801 MFD driver are only visible to
the sub-drivers whose resource fields they are added. This makes
abbreviating the resource name with the IC name pointless. It just adds
confusion in those sub-drivers which do not really care the exact model
that generates the IRQ but just want to know the purpose IRQ was
generated for. This is a preparatory fix to simplify adding support for
ROHM BD96802 PMIC.
Prepare for adding support for BD96802 which is very similar to BD96801.
Separate chip specific data into own structure which can be picked based
on the type of the IC.
BD96802Qxx-C is an automotive grade configurable Power Management
Integrated Circuit supporting Functional Safety features for application
processors, SoCs and FPGAs. BD96802 is controlled via I2C, provides two
interrupt lines and has two controllable buck regulators.
BD96802Qxx-C is an automotive grade configurable Power Management
Integrated Circuit supporting Functional Safety features for application
processors, SoCs and FPGAs. BD96802 is controlled via I2C, provides two
interrupt lines and has two controllable buck regulators.
The BD96802 belongs to the family of ROHM Scalable PMICs and is intended
to be used as a companion PMIC for the BD96801.
To allow ACPM clients to simply be children of the ACPM node in DT,
they need to be able to get the ACPM handle based on that ACPM node
directly.
Add an API to allow them to do so, devm_acpm_get_by_node().
At the same time, the previous approach of acquiring the ACPM handle
via a DT phandle is now obsolete and we can remove
devm_acpm_get_by_phandle(), which was there to facilitate that. There
are no existing or anticipated upcoming users of that API, because all
clients should be children of the ACPM node going forward.
Note that no DTs have been merged that use the old approach, so doing
this API change in this driver now will not affect any existing DTs or
client drivers.
André Draszik [Wed, 19 Mar 2025 05:38:24 +0000 (05:38 +0000)]
firmware: exynos-acpm: silence EPROBE_DEFER error on boot
This driver emits error messages when client drivers are trying to get
an interface handle to this driver here before this driver has
completed _probe().
Given this driver returns -EPROBE_DEFER in that case, this is not an
error and shouldn't be emitted to the log, similar to how
dev_err_probe() behaves, so just remove them.
This change also allows us to simplify the logic around releasing of
the acpm_np handle.
André Draszik [Wed, 19 Mar 2025 05:38:23 +0000 (05:38 +0000)]
firmware: exynos-acpm: fix reading longer results
ACPM commands that return more than 8 bytes currently don't work
correctly, as this driver ignores any such returned bytes.
This is evident in at least acpm_pmic_bulk_read(), where up to 8
registers can be read back and those 8 register values are placed
starting at &xfer->rxd[8].
The reason is that xfter->rxlen is initialized with the size of a
pointer (8 bytes), rather than the size of the byte array that pointer
points to (16 bytes)
Update the code such that we set the number of bytes expected to be the
size of the rx buffer.
Note1: While different commands have different lengths rx buffers, we
have to specify the same length for all rx buffers since acpm_get_rx()
assumes they're all the same length.
Note2: The different commands also have different lengths tx buffers,
but before switching the code to use the minimum possible length, some
more testing would have to be done to ensure this works correctly in
all situations. It seems wiser to just apply this fix here without
additional logic changes for now.
André Draszik [Tue, 25 Mar 2025 09:46:07 +0000 (09:46 +0000)]
firmware: exynos-acpm: use ktime APIs for timeout detection
acpm_dequeue_by_polling() uses a loop counter and assumes that each
iteration of the loop takes 20us. It may take longer, though, because
usleep_range() may sleep a different amount.
Switch to using ktime_get() / ktime_before() to detect the timeout
condition more reliably.
This change also makes the code easier to follow and it allows us to
adjust the sleep if necessary, without having to adjust the loop
counter exit condition.
Thomas Weißschuh [Wed, 2 Apr 2025 20:21:57 +0000 (21:21 +0100)]
tools/include: make uapi/linux/types.h usable from assembly
The "real" linux/types.h UAPI header gracefully degrades to a NOOP when
included from assembly code.
Mirror this behaviour in the tools/ variant.
Test for __ASSEMBLER__ over __ASSEMBLY__ as the former is provided by the
toolchain automatically.
Reported-by: Mark Brown <broonie@kernel.org> Closes: https://lore.kernel.org/lkml/af553c62-ca2f-4956-932c-dd6e3a126f58@sirena.org.uk/ Fixes: c9fbaa879508 ("selftests: vDSO: parse_vdso: Use UAPI headers instead of libc headers") Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Link: https://patch.msgid.link/20250321-uapi-consistency-v1-1-439070118dc0@linutronix.de Signed-off-by: Mark Brown <broonie@kernel.org> Reviewed-by: Mark Brown <broonie@kernel.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Merge tag 'soundwire-6.15-rc1-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/soundwire
Pull soundwire fix from Vinod Koul:
- add missing config symbol CONFIG_SND_HDA_EXT_CORE required for asoc
driver CONFIG_SND_SOF_SOF_HDA_SDW_BPT
* tag 'soundwire-6.15-rc1-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/soundwire:
ASoC: SOF: Intel: Let SND_SOF_SOF_HDA_SDW_BPT select SND_HDA_EXT_CORE
Len Brown [Sun, 6 Apr 2025 18:49:20 +0000 (14:49 -0400)]
tools/power turbostat: v2025.05.06
Support up to 8192 processors
Add cpuidle governor debug telemetry, disabled by default
Update default output to exclude cpuidle invocation counts
Bug fixes
Merge tag 'perf-urgent-2025-04-06' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf event fix from Ingo Molnar:
"Fix a perf events time accounting bug"
* tag 'perf-urgent-2025-04-06' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf/core: Fix child_total_time_enabled accounting bug at task exit
Merge tag 'sched-urgent-2025-04-06' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler fixes from Ingo Molnar:
- Fix a nonsensical Kconfig combination
- Remove an unnecessary rseq-notification
* tag 'sched-urgent-2025-04-06' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
rseq: Eliminate useless task_work on execve
sched/isolation: Make CONFIG_CPU_ISOLATION depend on CONFIG_SMP
... and don't error out so hard on missing module descriptions.
Before commit 6c6c1fc09de3 ("modpost: require a MODULE_DESCRIPTION()")
we used to warn about missing module descriptions, but only when
building with extra warnigns (ie 'W=1').
After that commit the warning became an unconditional hard error.
And it turns out not all modules have been converted despite the claims
to the contrary. As reported by Damian Tometzki, the slub KUnit test
didn't have a module description, and apparently nobody ever really
noticed.
The reason nobody noticed seems to be that the slub KUnit tests get
disabled by SLUB_TINY, which also ends up disabling a lot of other code,
both in tests and in slub itself. And so anybody doing full build tests
didn't actually see this failre.
So let's disable SLUB_TINY for build-only tests, since it clearly ends
up limiting build coverage. Also turn the missing module descriptions
error back into a warning, but let's keep it around for non-'W=1'
builds.
Len Brown [Sun, 6 Apr 2025 15:18:39 +0000 (11:18 -0400)]
tools/power turbostat: report CoreThr per measurement interval
The CoreThr column displays total thermal throttling events
since boot time.
Change it to report events during the measurement interval.
This is more useful for showing a user the current conditions.
Total events since boot time are still available to the user via
/sys/devices/system/cpu/cpu*/thermal_throttle/*
Document CoreThr on turbostat.8
Fixes: eae97e053fe30 ("turbostat: Support thermal throttle count print") Reported-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Len Brown <len.brown@intel.com> Cc: Chen Yu <yu.c.chen@intel.com>
Justin Ernst [Wed, 19 Mar 2025 20:27:31 +0000 (15:27 -0500)]
tools/power turbostat: Increase CPU_SUBSET_MAXCPUS to 8192
On systems with >= 1024 cpus (in my case 1152), turbostat fails with the error output:
"turbostat: /sys/fs/cgroup/cpuset.cpus.effective: cpu str malformat 0-1151"
A similar error appears with the use of turbostat --cpu when the inputted cpu
range contains a cpu number >= 1024:
# turbostat -c 1100-1151
"--cpu 1100-1151" malformed
...
Both errors are caused by parse_cpu_str() reaching its limit of CPU_SUBSET_MAXCPUS.
It's a good idea to limit the maximum cpu number being parsed, but 1024 is too low.
For a small increase in compute and allocated memory, increasing CPU_SUBSET_MAXCPUS
brings support for parsing cpu numbers >= 1024.
Increase CPU_SUBSET_MAXCPUS to 8192, a common setting for CONFIG_NR_CPUS on x86_64.
Signed-off-by: Justin Ernst <justin.ernst@hpe.com> Signed-off-by: Len Brown <len.brown@intel.com>
Merge tag 'timers-cleanups-2025-04-06' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer cleanups from Thomas Gleixner:
"A set of final cleanups for the timer subsystem:
- Convert all del_timer[_sync]() instances over to the new
timer_delete[_sync]() API and remove the legacy wrappers.
Conversion was done with coccinelle plus some manual fixups as
coccinelle chokes on scoped_guard().
- The final cleanup of the hrtimer_init() to hrtimer_setup()
conversion.
This has been delayed to the end of the merge window, so that all
patches which have been merged through other trees are in mainline
and all new users are catched.
Doing this right before rc1 ensures that new code which is merged post
rc1 is not introducing new instances of the original functionality"
* tag 'timers-cleanups-2025-04-06' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
tracing/timers: Rename the hrtimer_init event to hrtimer_setup
hrtimers: Rename debug_init_on_stack() to debug_setup_on_stack()
hrtimers: Rename debug_init() to debug_setup()
hrtimers: Rename __hrtimer_init_sleeper() to __hrtimer_setup_sleeper()
hrtimers: Remove unnecessary NULL check in hrtimer_start_range_ns()
hrtimers: Make callback function pointer private
hrtimers: Merge __hrtimer_init() into __hrtimer_setup()
hrtimers: Switch to use __htimer_setup()
hrtimers: Delete hrtimer_init()
treewide: Convert new and leftover hrtimer_init() users
treewide: Switch/rename to timer_delete[_sync]()
Merge tag 'irq-urgent-2025-04-06' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull more irq updates from Thomas Gleixner:
"A set of updates for the interrupt subsystem:
- A treewide cleanup for the irq_domain code, which makes the naming
consistent and gets rid of the original oddity of naming domains
'host'.
This is a trivial mechanical change and is done late to ensure that
all instances have been catched and new code merged post rc1 wont
reintroduce new instances.
- A trivial consistency fix in the migration code
The recent introduction of irq_force_complete_move() in the core
code, causes a problem for the nostalgia crowd who maintains ia64
out of tree.
The code assumes that hierarchical interrupt domains are enabled
and dereferences irq_data::parent_data unconditionally. That works
in mainline because both architectures which enable that code have
hierarchical domains enabled. Though it breaks the ia64 build,
which enables the functionality, but does not have hierarchical
domains.
While it's not really a problem for mainline today, this
unconditional dereference is inconsistent and trivially fixable by
using the existing helper function irqd_get_parent_data(), which
has the appropriate #ifdeffery in place"
* tag 'irq-urgent-2025-04-06' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
genirq/migration: Use irqd_get_parent_data() in irq_force_complete_move()
irqdomain: Stop using 'host' for domain
irqdomain: Rename irq_get_default_host() to irq_get_default_domain()
irqdomain: Rename irq_set_default_host() to irq_set_default_domain()
Merge tag 'timers-urgent-2025-04-06' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer fix from Thomas Gleixner:
"A revert to fix a adjtimex() regression:
The recent change to prevent that time goes backwards for the coarse
time getters due to immediate multiplier adjustments via adjtimex(),
changed the way how the timekeeping core treats that.
That change result in a regression on the adjtimex() side, which is
user space visible:
1) The forwarding of the base time moves the update out of the
original period and establishes a new one. That's changing the
behaviour of the [PF]LL control, which user space expects to be
applied periodically.
2) The clearing of the accumulated NTP error due to #1, changes the
behaviour as well.
An attempt to delay the multiplier/frequency update to the next tick
did not solve the problem as userspace expects that the multiplier or
frequency updates are in effect, when the syscall returns.
There is a different solution for the coarse time problem available,
so revert the offending commit to restore the existing adjtimex()
behaviour"
* tag 'timers-urgent-2025-04-06' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
Revert "timekeeping: Fix possible inconsistencies in _COARSE clockids"
Merge tag 'sh-for-v6.15-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/glaubitz/sh-linux
Pull sh updates from John Paul Adrian Glaubitz:
"One important fix and one small configuration update.
The first patch by Artur Rojek fixes an issue with the J2 firmware
loader not being able to find the location of the device tree blob due
to insufficient alignment of the .bss section which rendered J2 boards
unbootable.
The second patch by Johan Korsnes updates the defconfigs on sh to drop
the CONFIG_NET_CLS_TCINDEX configuration option which became obsolete
after 8c710f75256b ("net/sched: Retire tcindex classifier").
Summary:
- sh: defconfig: Drop obsolete CONFIG_NET_CLS_TCINDEX
- sh: Align .bss section padding to 8-byte boundary"
* tag 'sh-for-v6.15-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/glaubitz/sh-linux:
sh: defconfig: Drop obsolete CONFIG_NET_CLS_TCINDEX
sh: Align .bss section padding to 8-byte boundary
Merge tag 'kbuild-v6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull Kbuild updates from Masahiro Yamada:
- Improve performance in gendwarfksyms
- Remove deprecated EXTRA_*FLAGS and KBUILD_ENABLE_EXTRA_GCC_CHECKS
- Support CONFIG_HEADERS_INSTALL for ARCH=um
- Use more relative paths to sources files for better reproducibility
- Support the loong64 Debian architecture
- Add Kbuild bash completion
- Introduce intermediate vmlinux.unstripped for architectures that need
static relocations to be stripped from the final vmlinux
- Fix versioning in Debian packages for -rc releases
- Treat missing MODULE_DESCRIPTION() as an error
- Convert Nios2 Makefiles to use the generic rule for built-in DTB
- Add debuginfo support to the RPM package
* tag 'kbuild-v6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (40 commits)
kbuild: rpm-pkg: build a debuginfo RPM
kconfig: merge_config: use an empty file as initfile
nios2: migrate to the generic rule for built-in DTB
rust: kbuild: skip `--remap-path-prefix` for `rustdoc`
kbuild: pacman-pkg: hardcode module installation path
kbuild: deb-pkg: don't set KBUILD_BUILD_VERSION unconditionally
modpost: require a MODULE_DESCRIPTION()
kbuild: make all file references relative to source root
x86: drop unnecessary prefix map configuration
kbuild: deb-pkg: add comment about future removal of KDEB_COMPRESS
kbuild: Add a help message for "headers"
kbuild: deb-pkg: remove "version" variable in mkdebian
kbuild: deb-pkg: fix versioning for -rc releases
Documentation/kbuild: Fix indentation in modules.rst example
x86: Get rid of Makefile.postlink
kbuild: Create intermediate vmlinux build with relocations preserved
kbuild: Introduce Kconfig symbol for linking vmlinux with relocations
kbuild: link-vmlinux.sh: Make output file name configurable
kbuild: do not generate .tmp_vmlinux*.map when CONFIG_VMLINUX_MAP=y
Revert "kheaders: Ignore silly-rename files"
...
Merge tag 'drm-next-2025-04-05' of https://gitlab.freedesktop.org/drm/kernel
Pull drm fixes from Dave Airlie:
"Weekly fixes, mostly from the end of last week, this week was very
quiet, maybe you scared everyone away. It's mostly amdgpu, and xe,
with some i915, adp and bridge bits, since I think this is overly
quiet I'd expect rc2 to be a bit more lively.
bridge:
- tda998x: Select CONFIG_DRM_KMS_HELPER
amdgpu:
- Guard against potential division by 0 in fan code
- Zero RPM support for SMU 14.0.2
- Properly handle SI and CIK support being disabled
- PSR fixes
- DML2 fixes
- DP Link training fix
- Vblank fixes
- RAS fixes
- Partitioning fix
- SDMA fix
- SMU 13.0.x fixes
- Rom fetching fix
- MES fixes
- Queue reset fix
xe:
- Fix NULL pointer dereference on error path
- Add missing HW workaround for BMG
- Fix survivability mode not triggering
- Fix build warning when DRM_FBDEV_EMULATION is not set
i915:
- Bounds check for scalers in DSC prefill latency computation
- Fix build by adding a missing include
adp:
- Fix error handling in plane setup"
# -----BEGIN PGP SIGNATURE-----
* tag 'drm-next-2025-04-05' of https://gitlab.freedesktop.org/drm/kernel: (34 commits)
drm/i2c: tda998x: select CONFIG_DRM_KMS_HELPER
drm/amdgpu/gfx12: fix num_mec
drm/amdgpu/gfx11: fix num_mec
drm/amd/pm: Add gpu_metrics_v1_8
drm/amdgpu: Prefer shadow rom when available
drm/amd/pm: Update smu metrics table for smu_v13_0_6
drm/amd/pm: Remove host limit metrics support
Remove unnecessary firmware version check for gc v9_4_2
drm/amdgpu: stop unmapping MQD for kernel queues v3
Revert "drm/amdgpu/sdma_v4_4_2: update VM flush implementation for SDMA"
drm/amdgpu: Parse all deferred errors with UMC aca handle
drm/amdgpu: Update ta ras block
drm/amdgpu: Add NPS2 to DPX compatible mode
drm/amdgpu: Use correct gfx deferred error count
drm/amd/display: Actually do immediate vblank disable
drm/amd/display: prevent hang on link training fail
Revert "drm/amd/display: dml2 soc dscclk use DPM table clk setting"
drm/amd/display: Increase vblank offdelay for PSR panels
drm/amd: Handle being compiled without SI or CIK support better
drm/amd/pm: Add zero RPM enabled OD setting support for SMU14.0.2
...
Uday Shankar [Mon, 31 Mar 2025 22:46:32 +0000 (16:46 -0600)]
kbuild: rpm-pkg: build a debuginfo RPM
The rpm-pkg make target currently suffers from a few issues related to
debuginfo:
1. debuginfo for things built into the kernel (vmlinux) is not available
in any RPM produced by make rpm-pkg. This makes using tools like
systemtap against a make rpm-pkg kernel impossible.
2. debug source for the kernel is not available. This means that
commands like 'disas /s' in gdb, which display source intermixed with
assembly, can only print file names/line numbers which then must be
painstakingly resolved to actual source in a separate editor.
3. debuginfo for modules is available, but it remains bundled with the
.ko files that contain module code, in the main kernel RPM. This is a
waste of space for users who do not need to debug the kernel (i.e.
most users).
Address all of these issues by additionally building a debuginfo RPM
when the kernel configuration allows for it, in line with standard
patterns followed by RPM distributors. With these changes:
1. systemtap now works (when these changes are backported to 6.11, since
systemtap lags a bit behind in compatibility), as verified by the
following simple test script:
129 op_str = blk_op_name[op];
130
131 return op_str;
132 }
0xffffffff814c8768 <+40>: jmp 0xffffffff81d01360 <__x86_return_thunk>
End of assembler dump.
3. The size of the main kernel package goes down substantially,
especially if many modules are built (quite typical). Here is a
comparison of installed size of the kernel package (configured with
allmodconfig, dwarf4 debuginfo, and module compression turned off)
before and after this patch:
# rpm -qi kernel-6.13* | grep -E '^(Version|Size)'
Version : 6.13.0postpatch+
Size : 1382874089
Version : 6.13.0prepatch+
Size : 17870795887
This is a ~92% size reduction.
Note that a debuginfo package can only be produced if the following
configs are set:
- CONFIG_DEBUG_INFO=y
- CONFIG_MODULE_COMPRESS=n
- CONFIG_DEBUG_INFO_SPLIT=n
The first of these is obvious - we can't produce debuginfo if the build
does not generate it. The second two requirements can in principle be
removed, but doing so is difficult with the current approach, which uses
a generic rpmbuild script find-debuginfo.sh that processes all packaged
executables. If we want to remove those requirements the best path
forward is likely to add some debuginfo extraction/installation logic to
the modules_install target (controllable by flags). That way, it's
easier to operate on modules before they're compressed, and the logic
can be reused by all packaging targets.
Daniel Gomez [Fri, 28 Mar 2025 14:28:37 +0000 (14:28 +0000)]
kconfig: merge_config: use an empty file as initfile
The scripts/kconfig/merge_config.sh script requires an existing
$INITFILE (or the $1 argument) as a base file for merging Kconfig
fragments. However, an empty $INITFILE can serve as an initial starting
point, later referenced by the KCONFIG_ALLCONFIG Makefile variable
if -m is not used. This variable can point to any configuration file
containing preset config symbols (the merged output) as stated in
Documentation/kbuild/kconfig.rst. When -m is used $INITFILE will
contain just the merge output requiring the user to run make (i.e.
KCONFIG_ALLCONFIG=<$INITFILE> make <allnoconfig/alldefconfig> or make
olddefconfig).
Instead of failing when `$INITFILE` is missing, create an empty file and
use it as the starting point for merges.
Signed-off-by: Daniel Gomez <da.gomez@samsung.com> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Masahiro Yamada [Sun, 22 Dec 2024 00:30:53 +0000 (09:30 +0900)]
nios2: migrate to the generic rule for built-in DTB
Commit 654102df2ac2 ("kbuild: add generic support for built-in boot
DTBs") introduced generic support for built-in DTBs.
Select GENERIC_BUILTIN_DTB when built-in DTB support is enabled.
To keep consistency across architectures, this commit also renames
CONFIG_NIOS2_DTB_SOURCE_BOOL to CONFIG_BUILTIN_DTB, and
CONFIG_NIOS2_DTB_SOURCE to CONFIG_BUILTIN_DTB_NAME.
Johan Korsnes [Sun, 23 Mar 2025 19:13:30 +0000 (20:13 +0100)]
sh: defconfig: Drop obsolete CONFIG_NET_CLS_TCINDEX
This option was removed from Kconfig in 8c710f75256b ("net/sched:
Retire tcindex classifier") but from the defconfigs.
Fixes: 8c710f75256b ("net/sched: Retire tcindex classifier") Signed-off-by: Johan Korsnes <johan.korsnes@gmail.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: Rich Felker <dalias@libc.org> Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> Signed-off-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Artur Rojek [Sun, 16 Feb 2025 17:55:44 +0000 (18:55 +0100)]
sh: Align .bss section padding to 8-byte boundary
J2-based devices expect to find a device tree blob at the end of the
.bss section. As of a77725a9a3c5 ("scripts/dtc: Update to upstream
version v1.6.1-19-g0a3a9d3449c8"), libfdt enforces 8-byte alignment
for the DTB, causing J2 devices to fail early in sh_fdt_init().
As the J2 loader firmware calculates the DTB location based on the kernel
image .bss section size rather than the __bss_stop symbol offset, the
required alignment can't be enforced with BSS_SECTION(0, PAGE_SIZE, 8).
To fix this, inline a modified version of the above macro which grows
.bss by the required size. While this change affects all existing SH
boards, it should be benign on platforms which don't need this alignment.
Signed-off-by: Artur Rojek <contact@artur-rojek.eu> Reviewed-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> Tested-by: Rob Landley <rob@landley.net> Signed-off-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Merge tag 'input-for-v6.15-rc0' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Pull input updates from Dmitry Torokhov:
- a brand new driver for touchpads and touchbars in newer Apple devices
- support for Berlin-A series in goodix-berlin touchscreen driver
- improvements to matrix_keypad driver to better handle GPIOs toggling
- assorted small cleanups in other input drivers
* tag 'input-for-v6.15-rc0' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Input: goodix_berlin - add support for Berlin-A series
dt-bindings: input: goodix,gt9916: Document gt9897 compatible
dt-bindings: input: matrix_keypad - add wakeup-source property
dt-bindings: input: matrix_keypad - add missing property
Input: pm8941-pwrkey - fix dev_dbg() output in pm8941_pwrkey_irq()
Input: synaptics - hide unused smbus_pnp_ids[] array
Input: apple_z2 - fix potential confusion in Kconfig
Input: matrix_keypad - use fsleep for delays after activating columns
Input: matrix_keypad - add settle time after enabling all columns
dt-bindings: input: matrix_keypad: add settle time after enabling all columns
dt-bindings: input: matrix_keypad: convert to YAML
dt-bindings: input: Correct indentation and style in DTS example
MAINTAINERS: Add entries for Apple Z2 touchscreen driver
Input: apple_z2 - add a driver for Apple Z2 touchscreens
dt-bindings: input: touchscreen: Add Z2 controller
Input: Switch to use hrtimer_setup()
Input: drop vb2_ops_wait_prepare/finish
Nam Cao [Wed, 5 Feb 2025 10:55:20 +0000 (11:55 +0100)]
hrtimers: Rename debug_init_on_stack() to debug_setup_on_stack()
All the hrtimer_init*() functions have been renamed to hrtimer_setup*().
Rename debug_init_on_stack() to debug_setup_on_stack() as well, to keep the
names consistent.
Nam Cao [Wed, 5 Feb 2025 10:55:18 +0000 (11:55 +0100)]
hrtimers: Rename __hrtimer_init_sleeper() to __hrtimer_setup_sleeper()
All the hrtimer_init*() functions have been renamed to hrtimer_setup*().
Rename __hrtimer_init_sleeper() to __hrtimer_setup_sleeper() as well, to
keep the names consistent.
Nam Cao [Wed, 5 Feb 2025 10:55:17 +0000 (11:55 +0100)]
hrtimers: Remove unnecessary NULL check in hrtimer_start_range_ns()
The struct hrtimer::function field can only be changed using
hrtimer_setup*() or hrtimer_update_function(), and both already null-check
'function'. Therefore, null-checking 'function' in hrtimer_start_range_ns()
is not necessary.
Nam Cao [Wed, 5 Feb 2025 10:55:16 +0000 (11:55 +0100)]
hrtimers: Make callback function pointer private
Make the struct hrtimer::function field private, to prevent users from
changing this field in an unsafe way. hrtimer_update_function() should be
used if the callback function needs to be changed.
Nam Cao [Wed, 5 Feb 2025 10:55:11 +0000 (11:55 +0100)]
hrtimers: Switch to use __htimer_setup()
__hrtimer_init_sleeper() calls __hrtimer_init() and also sets up the
callback function. But there is already __hrtimer_setup() which does both
actions.
Switch to use __hrtimer_setup() to simplify the code.
Merge tag 'v6.15-p3' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto fix from Herbert Xu:
"This fixes a race condition in the newly added eip93 driver"
* tag 'v6.15-p3' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
crypto: inside-secure/eip93 - acquire lock on eip93_put_descriptor hash
Merge tag 's390-6.15-2' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull more s390 updates from Vasily Gorbik:
- Fix machine check handler _CIF_MCCK_GUEST bit setting by adding the
missing base register for relocated lowcore address
- Fix build failure on older linkers by conditionally adding the
-no-pie linker option only when it is supported
- Fix inaccurate kernel messages in vfio-ap by providing descriptive
error notifications for AP queue sharing violations
- Fix PCI isolation logic by ensuring non-VF devices correctly return
false in zpci_bus_is_isolated_vf()
- Fix PCI DMA range map setup by using dma_direct_set_offset() to add a
proper sentinel element, preventing potential overruns and
translation errors
- Cleanup header dependency problems with asm-offsets.c
- Add fault info for unexpected low-address protection faults in user
mode
- Add support for HOTPLUG_SMT, replacing the arch-specific "nosmt"
handling with common code handling
- Use bitop functions to implement CPU flag helper functions to ensure
that bits cannot get lost if modified in different contexts on a CPU
- Remove unused machine_flags for the lowcore
* tag 's390-6.15-2' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
s390/vfio-ap: Fix no AP queue sharing allowed message written to kernel log
s390/pci: Fix dev.dma_range_map missing sentinel element
s390/mm: Dump fault info in case of low address protection fault
s390/smp: Add support for HOTPLUG_SMT
s390: Fix linker error when -no-pie option is unavailable
s390/processor: Use bitop functions for cpu flag helper functions
s390/asm-offsets: Remove ASM_OFFSETS_C
s390/asm-offsets: Include ftrace_regs.h instead of ftrace.h
s390/kvm: Split kvm_host header file
s390/pci: Fix zpci_bus_is_isolated_vf() for non-VFs
s390/lowcore: Remove unused machine_flags
s390/entry: Fix setting _CIF_MCCK_GUEST with lowcore relocation
Merge tag '6.15-rc-part2-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6
Pull more smb client updates from Steve French:
- reconnect fixes: three for updating rsize/wsize and an SMB1 reconnect
fix
- RFC1001 fixes: fixing connections to nonstandard ports, and negprot
retries
- fix mfsymlinks to old servers
- make mapping of open flags for SMB1 more accurate
- permission fixes: adding retry on open for write, and one for stat to
workaround unexpected access denied
- add two new xattrs, one for retrieving SACL and one for retrieving
owner (without having to retrieve the whole ACL)
- fix mount parm validation for echo_interval
- minor cleanup (including removing now unneeded cifs_truncate_page)
* tag '6.15-rc-part2-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6:
cifs: update internal version number
cifs: Implement is_network_name_deleted for SMB1
cifs: Remove cifs_truncate_page() as it should be superfluous
cifs: Do not add FILE_READ_ATTRIBUTES when using GENERIC_READ/EXECUTE/ALL
cifs: Improve SMB2+ stat() to work also without FILE_READ_ATTRIBUTES
cifs: Add fallback for SMB2 CREATE without FILE_READ_ATTRIBUTES
cifs: Fix querying and creating MF symlinks over SMB1
cifs: Fix access_flags_to_smbopen_mode
cifs: Fix negotiate retry functionality
cifs: Improve handling of NetBIOS packets
cifs: Allow to disable or force initialization of NetBIOS session
cifs: Add a new xattr system.smb3_ntsd_owner for getting or setting owner
cifs: Add a new xattr system.smb3_ntsd_sacl for getting or setting SACLs
smb: client: Update IO sizes after reconnection
smb: client: Store original IO parameters and prevent zero IO sizes
smb:client: smb: client: Add reverse mapping from tcon to superblocks
cifs: remove unreachable code in cifs_get_tcp_session()
cifs: fix integer overflow in match_server()
Merge tag 'ntb-6.15' of https://github.com/jonmason/ntb
Pull ntb fixes from Jon Mason:
"Bug fixes for NTB Switchtec driver mw negative shift, Intel NTB link
status db, ntb_perf double unmap (in error case), and MSI 64bit
arithmetic.
Also, add new AMD NTB PCI IDs, update AMD NTB maintainer, and pull in
patch to reduce the stack usage in IDT driver"
* tag 'ntb-6.15' of https://github.com/jonmason/ntb:
ntb_hw_amd: Add NTB PCI ID for new gen CPU
ntb: reduce stack usage in idt_scan_mws
ntb: use 64-bit arithmetic for the MSI doorbell mask
MAINTAINERS: Update AMD NTB maintainers
ntb_perf: Delete duplicate dmaengine_unmap_put() call in perf_copy_chunk()
ntb: intel: Fix using link status DB's
ntb_hw_switchtec: Fix shift-out-of-bounds in switchtec_ntb_mw_set_trans
Miroslav reported that the changes for handling the inconsistencies in the
coarse time getters result in a regression on the adjtimex() side.
There are two issues:
1) The forwarding of the base time moves the update out of the original
period and establishes a new one.
2) The clearing of the accumulated NTP error is changing the behaviour as
well.
Userspace expects that multiplier/frequency updates are in effect, when the
syscall returns, so delaying the update to the next tick is not solving the
problem either.
Revert the change, so that the established expectations of user space
implementations (ntpd, chronyd) are restored. The re-introduced
inconsistency of the coarse time getters will be addressed in a subsequent
fix.
Fixes: 757b000f7b93 ("timekeeping: Fix possible inconsistencies in _COARSE clockids") Reported-by: Miroslav Lichvar <mlichvar@redhat.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/all/Z-qsg6iDGlcIJulJ@localhost
projects / users / jedix / linux-maple.git / log