Heiko Carstens says:
===================
This is supposed to improve s390 idle time accounting, and brings it
back to the state it was before arch_cpu_idle_time() was removed from
s390 [3].
In result all cpu time accounting is done by the s390 architecture backend
again, instead of having a mix of architecure specific and common code
accounting (common code: idle, s390 architecture: everything else).
===================
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
During regcache initialization, if an error occurs in the
cache_ops->populate callback, and if cache operations include an exit
callback, the error code from populate() is overwritten with the return
value from exit(). This hides the error condition from the caller of
regcache_init(), and can cause NULL pointer dereferences when the regcache
is later accessed.
Fixes: 94a3a95f03 ("regcache: Add ->populate() callback to separate from ->init()")
Signed-off-by: Francesco Lavra <flavra@baylibre.com>
Link: https://patch.msgid.link/20260616114429.1852456-1-flavra@baylibre.com
Signed-off-by: Mark Brown <broonie@kernel.org>
The YAML conversion added me as maintainer but I can't recall being
asked nor do I want to maintain it. Thierry has created the YAML file
and works for the company which contributed the driver.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Acked-by: Thierry Reding <thierry.reding@kernel.org>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Signed-off-by: Andi Shyti <andi.shyti@kernel.org>
Link: https://lore.kernel.org/r/20260616060910.1480-2-wsa+renesas@sang-engineering.com
Convert Documentation/devicetree/bindings/i2c/i2c-mux-reg.txt to
the YAML schema so the i2c-mux-reg binding is validated by
dt_binding_check. Faithful port of the existing properties; no
semantic change.
Signed-off-by: Abdurrahman Hussain <abdurrahman@nexthop.ai>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Andi Shyti <andi.shyti@kernel.org>
Link: https://lore.kernel.org/r/20260608-i2c-mux-reg-base-bus-num-v2-1-776e313f213a@nexthop.ai
davinci_i2c_probe() registers a cpufreq transition notifier before adding
the I2C adapter. If i2c_add_numbered_adapter() fails, the probe error path
releases the device resources without unregistering the notifier.
Add a dedicated error path to unregister the cpufreq notifier after
i2c_add_numbered_adapter() fails.
Fixes: 82c0de11b7 ("i2c: davinci: Add cpufreq support")
Signed-off-by: Haoxiang Li <haoxiang_li2024@163.com>
Cc: <stable@vger.kernel.org> # v2.6.36+
Reviewed-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
Signed-off-by: Andi Shyti <andi.shyti@kernel.org>
Link: https://lore.kernel.org/r/20260610030513.2651018-1-haoxiang_li2024@163.com
In cci_probe() the controller's interrupt is requested using a devres
managed API, and in cci_probe() error path and cci_remove() it'd be
safe to rely on devres mechanism to free and shutdown the interrupt,
thus explicit disable_irq() calls can be removed as unnecessary ones.
Signed-off-by: Vladimir Zapolskiy <vladimir.zapolskiy@linaro.org>
Reviewed-by: Loic Poulain <loic.poulain@oss.qualcomm.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Signed-off-by: Andi Shyti <andi.shyti@kernel.org>
Link: https://lore.kernel.org/r/20260515234121.1607425-5-vladimir.zapolskiy@linaro.org
On probe or runtime errors cci_reset() is called and it should be coupled
with cci_init(), instead of doing this on caller's side, embed cci_init()
directly into the cci_reset() function.
This is a non-functional change, cci_reset() and cci_init() function
bodies are reordered.
Signed-off-by: Vladimir Zapolskiy <vladimir.zapolskiy@linaro.org>
Reviewed-by: Loic Poulain <loic.poulain@oss.qualcomm.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Signed-off-by: Andi Shyti <andi.shyti@kernel.org>
Link: https://lore.kernel.org/r/20260515234121.1607425-4-vladimir.zapolskiy@linaro.org
The cci_init() function is not supposed to fail, and it never returns
a non-zero, so it'd make sense to convert its signature to void.
Signed-off-by: Vladimir Zapolskiy <vladimir.zapolskiy@linaro.org>
Reviewed-by: Loic Poulain <loic.poulain@oss.qualcomm.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Signed-off-by: Andi Shyti <andi.shyti@kernel.org>
Link: https://lore.kernel.org/r/20260515234121.1607425-3-vladimir.zapolskiy@linaro.org
- Fix discrepancy in --dump-tasks option
Due to a mistake, rtla-timerlat-hist used the CLI syntax "--dump-task"
instead of the documented "--dump-tasks". Change the option to match
both documentation and the other timerlat tool, rtla-timerlat-top.
- Extend coverage of runtime tests
Cover both top and hist tools in all applicable test cases, add tests
for a few uncovered options, and extend checks for some existing tests.
- Add unit tests for actions
rtla's actions feature is implemented in its source file and contains
non-trivial parsing logic. Cover it with unit tests.
- Stop record trace on interrupt
Fix a bug where an interval exists after receiving a signal in which
the main instance is stopped but the record instance is not, leading to
discrepancies in reported results and sometimes rtla hanging.
- Restore continue flag in actions_perform()
Fix a bug where rtla always continues tracing after hitting a threshold
even if the continue action was triggered just once, and add tests
verifying that the flag is reset properly.
- Migrate command line interface to libsubcmd
Replace rtla's argument parsing using getopt_long() with libsubcmd, used
by perf and objtool, to reuse existing code and auto-generate better
help messages. Extensive unit tests are included to detect regressions.
- Add -A/--aligned option to timerlat tools
Add an option to align timerlat threads, based on the recently
introduced TIMERLAT_ALIGN option of the timerlat tracer, together with
unit tests and documentation.
- Document tests in README
Document how to run unit and runtime tests in rtla's README.txt,
including the dependencies needed to run them.
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Merge tag 'trace-tools-v7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull RTLA tool updates from Steven Rostedt:
- Fix discrepancy in --dump-tasks option
Due to a mistake, rtla-timerlat-hist used the CLI syntax
"--dump-task" instead of the documented "--dump-tasks". Change the
option to match both documentation and the other timerlat tool,
rtla-timerlat-top.
- Extend coverage of runtime tests
Cover both top and hist tools in all applicable test cases, add tests
for a few uncovered options, and extend checks for some existing
tests.
- Add unit tests for actions
rtla's actions feature is implemented in its source file and contains
non-trivial parsing logic. Cover it with unit tests.
- Stop record trace on interrupt
Fix a bug where an interval exists after receiving a signal in which
the main instance is stopped but the record instance is not, leading
to discrepancies in reported results and sometimes rtla hanging.
- Restore continue flag in actions_perform()
Fix a bug where rtla always continues tracing after hitting a
threshold even if the continue action was triggered just once, and
add tests verifying that the flag is reset properly.
- Migrate command line interface to libsubcmd
Replace rtla's argument parsing using getopt_long() with libsubcmd,
used by perf and objtool, to reuse existing code and auto-generate
better help messages. Extensive unit tests are included to detect
regressions.
- Add -A/--aligned option to timerlat tools
Add an option to align timerlat threads, based on the recently
introduced TIMERLAT_ALIGN option of the timerlat tracer, together
with unit tests and documentation.
- Document tests in README
Document how to run unit and runtime tests in rtla's README.txt,
including the dependencies needed to run them.
* tag 'trace-tools-v7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: (26 commits)
rtla: Document tests in README
Documentation/rtla: Add -A/--aligned option
rtla/tests: Add unit tests for -A/--aligned option
rtla/timerlat: Add -A/--aligned CLI option
rtla/tests: Add unit tests for CLI option callbacks
rtla/tests: Add unit tests for _parse_args() functions
rtla: Parse cmdline using libsubcmd
tools subcmd: allow parsing distinct --opt and --no-opt
tools subcmd: support optarg as separate argument
rtla: Add libsubcmd dependency
rtla/tests: Add runtime tests for restoring continue flag
rtla/tests: Run runtime tests in temporary directory
rtla/tests: Add unit test for restoring continue flag
rtla/actions: Restore continue flag in actions_perform()
rtla: Stop the record trace on interrupt
rtla/tests: Add unit tests for actions module
rtla/tests: Add runtime tests for -C/--cgroup
rtla/tests: Add runtime test for -k and -u options
rtla/tests: Add runtime test for -H/--house-keeping
rtla/tests: Cover all hist options in runtime tests
...
A partial read will store the completed byte count in io->bytes_done.
The regular completion path applies io_fixup_rw_res() so that, when the
following operation reaches EOF, the number of bytes already read is
returned.
The iopoll completion path does not apply this fixup to the return value
and can return zero instead.
Use the fixup result when updating the CQE, and the raw result for the
reissue check.
Cc: stable@vger.kernel.org
Fixes: 4d9cb92ca4 ("io_uring/rw: fix short rw error handling")
Signed-off-by: Michael Wigham <michael@wigham.net>
Link: https://patch.msgid.link/20260613225240.34032-1-michael@wigham.net
Signed-off-by: Jens Axboe <axboe@kernel.dk>
NOP file-acquisition support choses between a fixed (registered) file and
a normal fget()'d file based on its own IORING_NOP_FIXED_FILE flag in
sqe->nop_flags. However, a request's REQ_F_FIXED_FILE is set
independently from the generic IOSQE_FIXED_FILE sqe flag during request
init, before the issue handler runs.
If a NOP is submitted with IOSQE_FIXED_FILE set (so REQ_F_FIXED_FILE is
set) but without IORING_NOP_FIXED_FILE, io_nop() takes the normal path
and grabs a real reference via io_file_get_normal(). On completion,
io_put_file() only drops the reference when REQ_F_FIXED_FILE is clear,
so the fget()'d file is never released and leaks:
BUG: memory leak
unreferenced object 0xffff88800f42c240 (size 176):
kmem_cache_alloc_noprof+0x358/0x440
alloc_empty_file+0x57/0x180
path_openat+0x44/0x1e50
do_file_open+0x121/0x200
do_sys_openat2+0xa7/0x150
__x64_sys_openat+0x82/0xf0
Decide between fixed and normal file acquisition from REQ_F_FIXED_FILE,
the same way io_assign_file() does for every other opcode, and fold
IORING_NOP_FIXED_FILE into REQ_F_FIXED_FILE at prep time.
Cc: stable@vger.kernel.org
Fixes: a85f31052b ("io_uring/nop: add support for testing registered files and buffers")
Reported-by: syzbot+2cd473471e77bda12b0e@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?id=879092631b98f73a28ea405adacfa5bb34a14a25
Signed-off-by: Vasileios Almpanis <vasilisalmpanis@gmail.com>
Link: https://patch.msgid.link/20260615144619.482749-1-vasilisalmpanis@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
- Dump the stack to the buffer on timerlat uret threashold event
Record the stack trace in the buffer for THREAD_URET as well as
THREAD_CONTEXT when the threshold is hit. Otherwise, if the threshold was
not hit at task wakeup, but was at task return, it will not produce a
stack trace making it harder to debug.
- Have osnoise trace prints print to all buffers
The osnoise tracer is allowed to print to the main buffer. Add a
osnoise_print() helper function and use trace_array_vprintk() to print
osnoise output.
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Merge tag 'trace-latency-v7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull tracing latency updates from Steven Rostedt:
- Dump the stack to the buffer on timerlat uret threashold event
Record the stack trace in the buffer for THREAD_URET as well as
THREAD_CONTEXT when the threshold is hit. Otherwise, if the threshold
was not hit at task wakeup, but was at task return, it will not
produce a stack trace making it harder to debug.
- Have osnoise trace prints print to all buffers
The osnoise tracer is allowed to print to the main buffer. Add a
osnoise_print() helper function and use trace_array_vprintk() to
print osnoise output.
* tag 'trace-latency-v7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
tracing/osnoise: Array printk init and cleanup
tracing/osnoise: Dump stack on timerlat uret threshold event
- eprobes: BTF support for dereferencing pointers
. tracing/eprobes: Allow use of BTF names to dereference pointers. Add syntax
to the parsing of eprobes to typecast structure pointer trace event fields,
enabling BTF-based dereferencing instead of relying on manual offsets.
- probes: Improvements and robustness enhancements
. tracing: Use flexible array for entry fetch code. Store probe entry fetch
instructions in the probe_entry_arg allocation via a flexible array
member to simplify memory allocation and lifetime management.
. tracing: Replace BUG_ON with lockdep_assert_held in uprobe_buffer functions.
Replace BUG_ON() calls with lockdep_assert_held() in uprobe buffer
enable/disable paths to prevent kernel crashes and better verify lock ownership.
. tracing/probes: Ensure the uprobe buffer size is bigger than event size.
Add a BUILD_BUG_ON() assertion to guarantee that the per-CPU uprobe
working buffer size is always larger than the maximum probe event size.
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Merge tag 'probes-v7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull probes updates from Masami Hiramatsu:
- BTF support for dereferencing pointers
Add syntax to the parsing of eprobes to typecast structure pointer
trace event fields, enabling BTF-based dereferencing instead of
relying on manual offsets.
- Improvements and robustness enhancements
- Use flexible array for entry fetch code.
Store probe entry fetch instructions in the probe_entry_arg
allocation via a flexible array member to simplify memory
allocation and lifetime management.
- Replace BUG_ON with lockdep_assert_held in uprobe_buffer functions
Replace BUG_ON() calls with lockdep_assert_held() in uprobe buffer
enable/disable paths to prevent kernel crashes and better verify
lock ownership.
- Ensure the uprobe buffer size is bigger than event size.
Add a BUILD_BUG_ON() assertion to guarantee that the per-CPU
uprobe working buffer size is always larger than the maximum probe
event size.
* tag 'probes-v7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
tracing/eprobes: Allow use of BTF names to dereference pointers
tracing: Replace BUG_ON with lockdep_assert_held in uprobe_buffer functions
tracing: Use flexible array for entry fetch code
tracing/probes: Ensure the uprobe buffer size is bigger than event size
- bootconfig: Render kernel subtree as cmdline string at build time
. bootconfig: move xbc_snprint_cmdline() to lib/bootconfig.c. Move the
xbc_snprint_cmdline() function and its buffer from main.c to the shared
lib/bootconfig.c parser library so it can be reused by userspace tools.
. tools/bootconfig: render kernel.* subtree as cmdline string with -C. Add a
new -C option to print the kernel.* subtree as a flat command-line string
at build time, allowing early parameter injection without runtime parsing.
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Merge tag 'bootconfig-v7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull bootconfig updates from Masami Hiramatsu:
- bootconfig: move xbc_snprint_cmdline() to lib/bootconfig.c
Move the xbc_snprint_cmdline() function and its buffer from
main.c to the shared lib/bootconfig.c parser library so it
can be reused by userspace tools.
- render kernel.* subtree as cmdline string with -C
Add a new -C option to print the kernel.* subtree as a flat
command-line string at build time, allowing early parameter
injection without runtime parsing.
* tag 'bootconfig-v7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
tools/bootconfig: render kernel.* subtree as cmdline string with -C
bootconfig: move xbc_snprint_cmdline() to lib/bootconfig.c
Add support for the CMTG vblank interrupt, which is delivered
through the DE port interrupt block. Enable/disable the interrupt
via the DE port IMR around CMTG enable/disable, and dispatch the
CMTG_VBLANK_{A,B} bits to the corresponding pipe vblank handler in
the gen8 DE IRQ handler.
Wired up for DISPLAY_VER 35. The CMTG interrupt is not enabled via
IER today because CMTG is brought up together with the eDP
transcoder; this can be revisited later.
v2:
- Use consistent DC3co check as used in earlier patches. [Uma]
- Use else-if instead of separate if block. [Uma]
- Merge mask and unmask function as it is similar. [Uma]
- Modify DISPLAY_VER() check. [Uma]
v3:
- Enable only vblank interrupt. [Dibin]
v4:
- Keep irq related code to intel_display_irq.c. [Jani, Uma]
Signed-off-by: Animesh Manna <animesh.manna@intel.com>
Reviewed-by: Uma Shankar <uma.shankar@intel.com>
Link: https://patch.msgid.link/20260615200339.885190-23-animesh.manna@intel.com
Restore CMTG registers after DC6 exit, as they lose their values
in the low-power state.
v2: Introduce intel_cmtg_restore() instead of calling multiple cmtg
functions. [Uma]
Signed-off-by: Animesh Manna <animesh.manna@intel.com>
Reviewed-by: Uma Shankar <uma.shankar@intel.com>
Link: https://patch.msgid.link/20260615200339.885190-22-animesh.manna@intel.com
Enable CMTG with fixed refresh rate mode and with dynamic
dc state enabled.
Disable CMTG with transcoder disable or if there is a transition
to vrr mode from fixed refresh rate mode.
v2:
- Move the enabled flag update to avoid issue in the disable timeout
path. [Uma]
v3:
- Introduce intel_cmtg_program() rather calling multiple cmtg
functions. [Dibin]
- Set clock select before cmtg disable as can lost during dc6
entry. [Dibin]
- Disable cmtg interrupt in crtc-disable(). [Dibin]
- Got R-b from Uma.
v4:
- Simplify the code further by moving for_each_new_intel_crtc_in_state
inside intel_cmtg.c.
Signed-off-by: Animesh Manna <animesh.manna@intel.com>
Reviewed-by: Uma Shankar <uma.shankar@intel.com>
Link: https://patch.msgid.link/20260615200339.885190-21-animesh.manna@intel.com
Enable the hardware based guardband calculations which allows
DC3co to remain enabled when timings are changing from one fixed
refresh rate to another fixed refresh rate.
Bspec: 75253
Reviewed-by: Uma Shankar <uma.shankar@intel.com>
Signed-off-by: Dibin Moolakadan Subrahmanian <dibin.moolakadan.subrahmanian@intel.com>
Signed-off-by: Animesh Manna <animesh.manna@intel.com>
Link: https://patch.msgid.link/20260615200339.885190-20-animesh.manna@intel.com
Program CMTG guardband to generate the Lower/Upper and early entry
guardband indicators to the DMC for DC3co control.
v2:
- Specify the unit for DC3CO entry/exit latency. [Uma]
- Add code comment for default line_time_us. [Uma]
Bspec: 75253
Reviewed-by: Uma Shankar <uma.shankar@intel.com>
Signed-off-by: Dibin Moolakadan Subrahmanian <dibin.moolakadan.subrahmanian@intel.com>
Signed-off-by: Animesh Manna <animesh.manna@intel.com>
Link: https://patch.msgid.link/20260615200339.885190-19-animesh.manna@intel.com
Earlier cmtg_disable() used to disable all instances of CMTG
which cannot handle individual request for specific CMTG instance.
Introduce cmtg_disable_all() which will disable all cmtg instances
and cmtg_disable() only disable specific instance.
v2:
- Use intel_de_rmw to simplify. [Uma]
v3:
- Add a code comment describing when cpu_transcoder should be used
instead of cmtg_transcoder. [Uma]
Signed-off-by: Dibin Moolakadan Subrahmanian <dibin.moolakadan.subrahmanian@intel.com>
Signed-off-by: Animesh Manna <animesh.manna@intel.com>
Reviewed-by: Uma Shankar <uma.shankar@intel.com>
Link: https://patch.msgid.link/20260615200339.885190-18-animesh.manna@intel.com
Program DDI_FUNC_CTL2 to configure the eDP transcoder as secondary
to the CMTG transcoder.
v2:
- Update commit header to be more clear. [Uma]
Bspec: 68915
Reviewed-by: Uma Shankar <uma.shankar@intel.com>
Reviewed-by: Dibin Moolakadan Subrahmanian <dibin.moolakadan.subrahmanian@intel.com>
Signed-off-by: Animesh Manna <animesh.manna@intel.com>
Link: https://patch.msgid.link/20260615200339.885190-17-animesh.manna@intel.com
Add a hook to enable CMTG by programming CMTG CTL with Sync to Port.
When CMTG starts running, the Sync to Port bit will be cleared. Add
a wait to check its running status and trigger WARN_ON() on timeout.
Bspec: 69088
Reviewed-by: Uma Shankar <uma.shankar@intel.com>
Signed-off-by: Animesh Manna <animesh.manna@intel.com>
Link: https://patch.msgid.link/20260615200339.885190-16-animesh.manna@intel.com
Add intel_cmtg_set_vrr_ctl() to program TRANS_VRR_CTL for the
CMTG transcoder. Purposefully avoid using the existing VRR enable
path, as many of its operations are not needed for CMTG.
v2: Use sw state instead of reading from hardware. [Jani]
v3: Program cmtg vrr control register along with vrr transcoder
registers. [R-b from Uma]
v4: Split out from vrr timing registers programming.
Bspec: 68989
Reviewed-by: Uma Shankar <uma.shankar@intel.com>
Signed-off-by: Animesh Manna <animesh.manna@intel.com>
Link: https://patch.msgid.link/20260615200339.885190-14-animesh.manna@intel.com
Program the VRR registers of CMTG, as the VRR timing generator
will always be enabled for NVL.
Add intel_cmtg_set_vrr_timings() which mirrors the per-transcoder
VRR VMIN/VMAX/FLIPLINE programming on the CMTG transcoder paired
with the pipe's cpu_transcoder.
Invoke it from intel_vrr_set_transcoder_timings() and from the LRR
fastset path, right after the existing intel_vrr_set_fixed_rr_timings()
calls, so the CMTG VRR timing registers stay in sync with the
cpu_transcoder's.
v2: Use sw state instead of reading from hardware. [Jani]
v3: Program cmtg vrr timing registers along with vrr transcoder registers.
v4: Reuse vrr timing programming helper.
Bspec: 68989
Reviewed-by: Uma Shankar <uma.shankar@intel.com>
Signed-off-by: Animesh Manna <animesh.manna@intel.com>
Link: https://patch.msgid.link/20260615200339.885190-13-animesh.manna@intel.com
intel_vrr_set_fixed_rr_timings() now takes the target transcoder as an
explicit argument rather than implicitly using crtc_state->cpu_transcoder,
so the parameter name 'cpu_transcoder' is misleading. Rename it to plain
'transcoder' to reflect that any transcoder may be programmed.
No functional change.
Signed-off-by: Animesh Manna <animesh.manna@intel.com>
Reviewed-by: Uma Shankar <uma.shankar@intel.com>
Link: https://patch.msgid.link/20260615200339.885190-12-animesh.manna@intel.com
Several fixes and improvements to resctrl test and a change to
kselftest document to clarify the use of FORCE_TARGETS build
variable.
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Merge tag 'linux_kselftest-next-7.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
Pull kselftest updates from Shuah Khan:
"Several fixes and improvements to resctrl tests and a change to
kselftest document to clarify the use of FORCE_TARGETS build variable"
* tag 'linux_kselftest-next-7.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
kselftest: fix doc for ksft_test_result_report()
selftests/resctrl: Reduce L2 impact on CAT test
selftests/resctrl: Simplify perf usage in CAT test
selftests/resctrl: Remove requirement on cache miss rate
selftests/resctrl: Raise threshold at which MBM and PMU values are compared
selftests/resctrl: Increase size of buffer used in MBM and MBA tests
selftests/resctrl: Support multiple events associated with iMC
selftests/resctrl: Prepare for parsing multiple events per iMC
selftests/resctrl: Do not store iMC counter value in counter config structure
selftests/resctrl: Reduce interference from L2 occupancy during cache occupancy test
selftests/resctrl: Improve accuracy of cache occupancy test
docs: kselftest: Document the FORCE_TARGETS build variable
Fixes to tool and kunit core and new features to both to support
JUnit XML (primitive) and backtrace suppression API:
- bug/kunit: Core support for suppressing warning backtraces
- kunit: tool: Parse and print the reason tests are skipped
- kunit: tool: Add (primitive) support for outputting JUnit XML
- kunit:tool: Don't write to stdout when it should be disabled
- kunit: Add backtrace suppression self-tests
- drm: Suppress intentional warning backtraces in scaling unit tests
- kunit: Add documentation for warning backtrace suppression API
- kunit: Fix spelling mistakes in comments and messages
- gen_compile_commands: Ignore libgcc.a
- kunit: qemu_configs: Add or1k / openrisc configuration
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Merge tag 'linux_kselftest-kunit-7.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
Pull kunit updates from Shuah Khan:
"Fixes to tool and kunit core and new features to both to support JUnit
XML (primitive) and backtrace suppression API:
- Core support for suppressing warning backtraces
- Parse and print the reason tests are skipped
- Add (primitive) support for outputting JUnit XML
- Don't write to stdout when it should be disabled
- Add backtrace suppression self-tests
- Suppress intentional warning backtraces in scaling unit tests
- Add documentation for warning backtrace suppression API
- Fix spelling mistakes in comments and messages
- gen_compile_commands: Ignore libgcc.a
- qemu_configs: Add or1k / openrisc configuration"
* tag 'linux_kselftest-kunit-7.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
kunit:tool: Don't write to stdout when it should be disabled
kunit: tool: Add (primitive) support for outputting JUnit XML
kunit: tool: Parse and print the reason tests are skipped
kunit: Add documentation for warning backtrace suppression API
drm: Suppress intentional warning backtraces in scaling unit tests
kunit: Add backtrace suppression self-tests
bug/kunit: Core support for suppressing warning backtraces
kunit: Fix spelling mistakes in comments and messages
kunit: qemu_configs: Add or1k / openrisc configuration
gen_compile_commands: Ignore libgcc.a
Take the target transcoder as an explicit parameter so the helper can
program VRR VMIN/VMAX/FLIPLINE registers for transcoders other than the
crtc_state->cpu_transcoder (e.g. the CMTG transcoder).
No functional change: all existing callers pass crtc_state->cpu_transcoder.
v2:
- Add separate patch for renaming the cpu_transcoder variable. [Ville]
Reviewed-by: Uma Shankar <uma.shankar@intel.com>
Signed-off-by: Animesh Manna <animesh.manna@intel.com>
Link: https://patch.msgid.link/20260615200339.885190-11-animesh.manna@intel.com
Expose intel_set_transcoder_timings() & intel_set_transcoder_timings_lrr()
so that they can program timings on any transcoder, and use them from a
new intel_cmtg_set_timings() helper instead of duplicating the timing
register write sequence for CMTG.
intel_cmtg_set_timings() maps the CPU transcoder to the corresponding
CMTG transcoder (TRANSCODER_A->TRANSCODER_CMTG0, TRANSCODER_B->
TRANSCODER_CMTG1) and calls the shared helper, gated by
intel_cmtg_is_allowed(). It is invoked from hsw_configure_cpu_transcoder()
for the full modeset path and from intel_pipe_fastset() for the LRR
update path.
v2:
- Use sw state instead of reading directly from hardware. [Jani]
- Move set_timing later after encoder enable. [Dibin]
v3:
- Replace id with trans. [Jani]
- Program cmtg set_timing() along with primary transcoder timing.
v4:
- Use _MMIO_TRANS() for cmtg registers instead of direct
multiplication. [Jani]
v5:
- Modify register definition approach and match existing
transcoder definition. [Ville]
v6:
- Reuse transcoder timing helpers. [Ville]
v7:
- Introduce enum for set_timing_type. [Uma]
- Add check for INVALID_TRANSCODER. [Uma]
Bspec: 68989
Reviewed-by: Uma Shankar <uma.shankar@intel.com>
Signed-off-by: Animesh Manna <animesh.manna@intel.com>
Link: https://patch.msgid.link/20260615200339.885190-10-animesh.manna@intel.com
intel_set_transcoder_timings_lrr() now takes the target transcoder as an
explicit argument rather than implicitly using crtc_state->cpu_transcoder,
so the parameter name 'cpu_transcoder' is misleading. Rename it to plain
'transcoder' to reflect that any transcoder may be programmed.
No functional change.
Signed-off-by: Animesh Manna <animesh.manna@intel.com>
Reviewed-by: Uma Shankar <uma.shankar@intel.com>
Link: https://patch.msgid.link/20260615200339.885190-9-animesh.manna@intel.com
Make intel_set_transcoder_timings_lrr() take the target transcoder as an
explicit parameter instead of always using crtc_state->cpu_transcoder.
This allows the LRR timing programming sequence to be reused for other
transcoders (e.g. CMTG).
Move the intel_vrr_set_fixed_rr_timings() and intel_vrr_transcoder_enable()
calls out of intel_set_transcoder_timings_lrr() and into its only caller
intel_pipe_fastset(), so the helper now strictly programs the LRR timing
registers for the given transcoder.
No functional change intended.
v2:
- Add separate patch for renaming the cpu_transcoder variable. [Ville]
Reviewed-by: Uma Shankar <uma.shankar@intel.com>
Signed-off-by: Animesh Manna <animesh.manna@intel.com>
Link: https://patch.msgid.link/20260615200339.885190-8-animesh.manna@intel.com
DP_MIN_HBLANK_CTL is a CPU transcoder register and must not be written
for the CMTG transcoders. Skip the programming when the target
transcoder is TRANSCODER_CMTG0 or TRANSCODER_CMTG1.
Reviewed-by: Uma Shankar <uma.shankar@intel.com>
Signed-off-by: Animesh Manna <animesh.manna@intel.com>
Link: https://patch.msgid.link/20260615200339.885190-7-animesh.manna@intel.com
intel_set_transcoder_timings() now takes the target transcoder as an
explicit argument rather than implicitly using crtc_state->cpu_transcoder,
so the parameter name 'cpu_transcoder' is misleading. Rename it to plain
'transcoder' to reflect that any transcoder may be programmed.
No functional change.
Signed-off-by: Animesh Manna <animesh.manna@intel.com>
Reviewed-by: Uma Shankar <uma.shankar@intel.com>
Link: https://patch.msgid.link/20260615200339.885190-6-animesh.manna@intel.com
Let intel_set_transcoder_timings() take the target transcoder as an
explicit argument instead of always using crtc_state->cpu_transcoder.
This makes the helper reusable for callers that need to program timings
for a transcoder other than the CRTC's CPU transcoder.
Update all existing callers to pass crtc_state->cpu_transcoder so there
is no functional change.
Reviewed-by: Uma Shankar <uma.shankar@intel.com>
Signed-off-by: Animesh Manna <animesh.manna@intel.com>
Link: https://patch.msgid.link/20260615200339.885190-5-animesh.manna@intel.com
As all cmtg registers offset from base cmtg register is similar to
normal transcoder register, so follow existing way of defining
transcoder register for cmtg as well. Add base CMTG offset in
struct _display_device_info which will be used to derive the actual
register address for platform supporting CMTG.
Bspec: 68989
Reviewed-by: Uma Shankar <uma.shankar@intel.com>
Suggested-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Animesh Manna <animesh.manna@intel.com>
Link: https://patch.msgid.link/20260615200339.885190-4-animesh.manna@intel.com
Program the CMTG Clock Select register based on the transcoder used.
v2:
- Correct mask for PHY B. [Jani]
- Use REG_FIELD_PREP() for enable value. [Dibin]
- Extend cmtg clock select for xe3plpd. [Dibin]
v3:
- CMTG support removed for old platform.
v4:
- Optimize further with else-if. [Uma]
- Correct CMTG_CLK_SEL_B_MASK. [Uma]
v5:
- Add transcoder-port compatibility check. [Dibin]
Bspec: 69103
Reviewed-by: Uma Shankar <uma.shankar@intel.com>
Signed-off-by: Animesh Manna <animesh.manna@intel.com>
Signed-off-by: Dibin Moolakadan Subrahmanian <dibin.moolakadan.subrahmanian@intel.com>
Link: https://patch.msgid.link/20260615200339.885190-3-animesh.manna@intel.com
CMTG is supported on transcoder A and transcoder B with EDP,
so add a separate helper intel_cmtg_is_allowed() to check the
prerequisites for enabling CMTG. CMTG will be enabled only in
specific use cases such as PSR2, PR-ALPM, and LOBF, and will be
used in conjunction with the DC3CO feature. DC3co will be enabled
in a separate patch.
Note: Use-case-specific checks and transcoder-port compatibility
validation will be handled part of DC3co feature implementation.
v2:
- Remove separate flag for DC3co from crtc_state. [Uma, Dibin]
v3:
- Do not access power domain members directly. [Jani]
v4:
- Remove check for DC3co state now. if needed add Dc3co allow check
later once Dc3co patches are merged. [Uma]
Bspec: 68915
Reviewed-by: Uma Shankar <uma.shankar@intel.com>
Reviewed-by: Dibin Moolakadan Subrahmanian <dibin.moolakadan.subrahmanian@intel.com>
Signed-off-by: Animesh Manna <animesh.manna@intel.com>
Link: https://patch.msgid.link/20260615200339.885190-2-animesh.manna@intel.com
* Only trigger interrupts that defined ActiveBoth in ACPI on boot
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Merge tag 'intel-gpio-v7.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/andy/linux-gpio-intel into gpio/for-current
intel-gpio for v7.1-1
* Only trigger interrupts that defined ActiveBoth in ACPI on boot
The MIN_RMA size checks in fadump_setup_param_area() use
(MIN_RMA * 1024 * 1024), which is evaluated in int and can
overflow when MIN_RMA is increased to values such as SZ_2G,
triggering compiler warnings such as:
warning: integer overflow in expression of type 'int'
results in '0' [-Woverflow]
Define MIN_RMA directly in bytes using SZ_1M and update the
callers accordingly. This avoids repeated unit conversions and
prevents integer overflow.
Also convert MIN_RMA back to MB when populating the firmware
architecture vector, since firmware expects the value in MB.
Suggested-by: Christophe Leroy (CS GROUP) <chleroy@kernel.org>
Reviewed-by: Ritesh Harjani (IBM) <ritesh.list@gmail.com>
Signed-off-by: Sayali Patil <sayalip@linux.ibm.com>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/310b040acef712fdc79e3e37d0f4c2213938b556.1781589284.git.sayalip@linux.ibm.com
During a syscall restart, block KUAP so that pending interrupts can be
replayed. The original KUAP state is not restored before returning to
userspace, causing subsequent userspace accesses to fault and eventually
trigger bad_access_pkey(), crashing the kernel.
The original KUAP register values are already saved in
arch_enter_from_user_mode(). Restore them on the syscall restart exit
path before returning to userspace.
Fixes: bee25f97ad ("powerpc: Enable GENERIC_ENTRY feature")
Reported-by: Sayali Patil <sayalip@linux.ibm.com>
Closes: https://lore.kernel.org/linuxppc-dev/fcd11556-27ac-4cd7-8c77-50716dec6985@linux.ibm.com/
Signed-off-by: Mukesh Kumar Chaurasiya (IBM) <mkchauras@gmail.com>
Tested-by: Sayali Patil <sayalip@linux.ibm.com>
[Maddy: Added Closes tag]
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20260615162617.2861795-1-mkchauras@gmail.com
Headers under include/ aren't supposed to try to include headers from
driver directories, such as i915_reg_defs.h. Remove it.
Reviewed-by: Michał Grzelak <michal.grzelak@intel.com>
Link: https://patch.msgid.link/20260615152837.1898991-1-jani.nikula@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Replace individual ssd130x_write_cmd() calls and per-command error
checks with a flat command array dispatched through ssd130x_run_cmd_seq().
Signed-off-by: Alberto Ruiz <aruiz@redhat.com>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Tested-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patch.msgid.link/20260612-ssd-batchcmd-v1-4-c61e5f7c24bc@redhat.com
Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
Replace individual ssd130x_write_cmd() calls and per-command error
checks with a flat command array dispatched through ssd130x_run_cmd_seq().
Signed-off-by: Alberto Ruiz <aruiz@redhat.com>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Tested-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patch.msgid.link/20260612-ssd-batchcmd-v1-3-c61e5f7c24bc@redhat.com
Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
Introduce ssd130x_run_cmd_seq() that interprets a flat byte array of
length-prefixed command entries terminated by a zero byte, removing the
need for per-command error checking at each call site.
Signed-off-by: Alberto Ruiz <aruiz@redhat.com>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Tested-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patch.msgid.link/20260612-ssd-batchcmd-v1-1-c61e5f7c24bc@redhat.com
Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
- rework of dm-ima
- introduce dm-inlinecrypt
- fix wrong return value in dm-ioctl
- fix rcu stall when polling
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Merge tag 'for-7.2/dm-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm
Pull device mapper updates from Mikulas Patocka:
- small cleanups in dm-vdo, dm-raid, dm-cache, dm-zoned-metadata
- rework of dm-ima
- introduce dm-inlinecrypt
- fix wrong return value in dm-ioctl
- fix rcu stall when polling
* tag 'for-7.2/dm-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
dm-zoned-metadata: Use strscpy() to copy device name
dm cache: make smq background work limit configurable
dm-inlinecrypt: add support for hardware-wrapped keys
dm: limit target bio polling to one shot
dm-ioctl: report an error if a device has no table
dm: add documentation for dm-inlinecrypt target
dm-inlinecrypt: add target for inline block device encryption
block: export blk-crypto symbols required by dm-inlinecrypt
dm-ima: use active table's size if available
dm-ima: Fail more gracefully in dm_ima_measure_on_*
dm-ima: Handle race between rename and table swap
dm-ima: Fix issues with dm_ima_measure_on_device_rename
dm-ima: remove new_map from dm_ima_measure_on_device_clear
dm-ima: Fix UAF errors and measuring incorrect context
dm-ima: don't copy the active table to the inactive table
dm-ima: Remove status_flags from dm_ima_measure_on_table_load()
dm-ima: remove broken last_target_measured logic
dm-ima: remove dm_ima_reset_data()
dm-raid: only requeue bios when dm is suspending
dm vdo: use get_random_u32() where appropriate
mlxbf3_gpio_probe() logs a devm_gpiochip_add_data() failure but still
returns success. That leaves the platform device bound even though the
GPIO chip was not registered.
Return the registration error so probe failure matches the missing
gpiochip state.
Fixes: cd33f216d2 ("gpio: mlxbf3: Add gpio driver support")
Signed-off-by: Pengpeng Hou <pengpeng@iscas.ac.cn>
Reviewed-by: Linus Walleij <linusw@kernel.org>
Link: https://patch.msgid.link/20260615091918.43333-1-pengpeng@iscas.ac.cn
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
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Merge tag 'for-7.2/block-20260615' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux
Pull block updates from Jens Axboe:
- NVMe pull request via Keith:
- Per-controller admin and IO timeout sysfs attributes, and
letting the block layer set request timeouts (Maurizio,
Maximilian)
- Multipath passthrough iostats, and PCI P2PDMA enablement for
multipath devices (Keith, Kiran)
- A new diag sysfs attribute group exporting per-controller
counters (retries, multipath failover, error counters, requeue
and failure counts, reset and reconnect events) (Nilay)
- FDP configuration validation and bounds check fixes (liuxixin)
- Various nvmet fixes, including a pre-auth out-of-bounds read in
the Discovery Get Log Page handler, auth payload bounds
validation, and tcp error-path leak fixes (Bryam, Tianchu,
Geliang)
- nvme-tcp lockdep and workqueue fixes (Shin'ichiro, Kuniyuki,
Eric)
- Assorted other fixes and cleanups (John, Yao, Chao, Mateusz,
Achkinazi, Wentao)
- MD pull request via Yu Kuai:
- raid1/raid10 fixes for a deadlock in the read error recovery
path, error-path detection and bio accounting with cloned bios,
and an nr_pending leak in the REQ_ATOMIC bad-block error path
(Abd-Alrhman)
- PCI P2PDMA propagation from member devices to the RAID device
(Kiran)
- dm-raid bio requeue fix, and various smaller fixes and cleanups
(Benjamin, Chen, Li, Thorsten)
- Enable Clang lock context analysis for the block layer, with the
accompanying annotations across queue limits, the blk_holder_ops
callbacks, crypto, cgroup, iocost, kyber and mq-deadline (Bart)
- Block status code infrastructure work: a tagged status table, a
str_to_blk_op() helper, a bio_endio_status() helper, and on top of
that a new configurable block-layer error injection facility
(Christoph)
- DRBD netlink rework, replacing the genl_magic machinery with explicit
netlink serialization and moving the DRBD UAPI headers to
include/uapi/linux/ (Christoph Böhmwalder)
- bvec improvements: a bvec_folio() helper and making the bvec_iter
helpers proper inline functions (Willy, Christoph)
- ublk cleanups and a canceling-flag fix for the disk-not-allocated
case (Caleb, Ming)
- Partition handling fixes: bound the AIX pp_count scan, fix an of_node
refcount leak, and replace __get_free_page() with kmalloc() (Bryam,
Wentao, Mike)
- Convert numa_node to int in blk_mq_hw_ctx and ->init_request, and add
WQ_PERCPU to the block workqueue users (Mateusz, Marco)
- Block statistics and tracing: propagate in-flight to the whole disk
on partition IO, export passthrough stats, and a new
block_rq_tag_wait tracepoint (Tang, Keith, Aaron)
- A round of removals, unexports and cleanups across bio, direct-io and
the bvec helpers (Christoph)
- Various driver fixes (mtip32xx use-after-free, rbd snap_count
validation and strscpy conversion, nbd socket lockdep reclassify,
virtio-blk zone report clamp, floppy) and a batch of MAINTAINERS
email/list updates (Coly, Li, Yu, Christoph Böhmwalder)
- Other little fixes and cleanups all over
* tag 'for-7.2/block-20260615' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux: (117 commits)
MAINTAINERS: Update Coly Li's email address
block: check bio split for unaligned bvec
nbd: Reclassify sockets to avoid lockdep circular dependency
block: add configurable error injection
block: add a str_to_blk_op helper
block: add a "tag" for block status codes
block: add a macro to initialize the status table
floppy: Drop unused pnp driver data
block: propagate in_flight to whole disk on partition I/O
virtio-blk: clamp zone report to the report buffer capacity
block: optimize I/O merge hot path with unlikely() hints
drivers/block/rbd: Use strscpy() to copy strings into arrays
partitions: aix: bound the pp_count scan to the ppe array
block: Enable lock context analysis
block/mq-deadline: Make the lock context annotations compatible with Clang
block/Kyber: Make the lock context annotations compatible with Clang
block/blk-mq-debugfs: Improve lock context annotations
block/blk-iocost: Inline iocg_lock() and iocg_unlock()
block/blk-iocost: Split ioc_rqos_throttle()
block/crypto: Annotate the crypto functions
...
