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2024-11-22tracing: Record task flag NEED_RESCHED_LAZY.Thomas Gleixner
The scheduler added NEED_RESCHED_LAZY scheduling. Record this state as part of trace flags and expose it in the need_resched field. Record and expose NEED_RESCHED_LAZY. [bigeasy: Commit description, documentation bits.] Cc: Peter Zijlstra <peterz@infradead.org> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Link: https://lore.kernel.org/20241122202849.7DfYpJR0@linutronix.de Reviewed-by: Ankur Arora <ankur.a.arora@oracle.com> Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
2024-11-22perf tests: Fix hwmon parsing with PMU name testIan Rogers
Incorrectly the hwmon with PMU name test didn't pass "true". Fix and address issue with hwmon_pmu__config_terms needing to load events - a load bearing assert fired. Also fix missing list deletion when putting the hwmon test PMU and lower some debug warnings to make the hwmon PMU less spammy in verbose mode. Signed-off-by: Ian Rogers <irogers@google.com> Tested-by: Namhyung Kim <namhyung@kernel.org> Link: https://lore.kernel.org/r/20241121000955.536930-1-irogers@google.com Signed-off-by: Namhyung Kim <namhyung@kernel.org>
2024-11-22perf hwmon_pmu: Ensure hwmon key union is zeroed before useIan Rogers
Non-zero values led to mismatches in testing. This was reproducible with -fsanitize=undefined. Reported-by: Arnaldo Carvalho de Melo <acme@kernel.org> Closes: https://lore.kernel.org/lkml/Zzdtj0PEWEX3ATwL@x1/ Signed-off-by: Ian Rogers <irogers@google.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Link: https://lore.kernel.org/r/20241119230033.115369-1-irogers@google.com Signed-off-by: Namhyung Kim <namhyung@kernel.org>
2024-11-22perf tests hwmon_pmu: Remove double evlist__delete()Arnaldo Carvalho de Melo
In the error path when failing to parse events the evlist is being deleted twice, keep the one after the out label. Fixes: 531ee0fd4836994f ("perf test: Add hwmon "PMU" test") Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Link: https://lore.kernel.org/r/ZzzoJNNcJJVnPCCe@x1 Signed-off-by: Namhyung Kim <namhyung@kernel.org>
2024-11-22perf/test: fix perf ftrace test on s390Thomas Richter
On s390 the perf test case ftrace sometimes fails as follows: # ./perf test ftrace 79: perf ftrace tests : FAILED! # The failure depends on the kernel .config file. Some configurations always work fine, some do not. The ftrace profile test mostly fails, because the ring buffer was not large enough, and some lines (especially the interesting ones with nanosleep in it) where dropped. To achieve success for all tested kernel configurations, enlarge the buffer to store the traces completely without wrapping. The default buffer size is too small for all kernel configurations. Set the buffer size of for the ftrace profile test to 16 MB. Output after: # ./perf test ftrace 79: perf ftrace tests : Ok # Signed-off-by: Thomas Richter <tmricht@linux.ibm.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: agordeev@linux.ibm.com Cc: gor@linux.ibm.com Cc: hca@linux.ibm.com Cc: sumanthk@linux.ibm.com Link: https://lore.kernel.org/r/20241119064856.641446-1-tmricht@linux.ibm.com Suggested-by: Sven Schnelle <svens@linux.ibm.com> Suggested-by: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Namhyung Kim <namhyung@kernel.org>
2024-11-22perf bpf-filter: Return -ENOMEM directly when pfi allocation failsHao Ge
Directly return -ENOMEM when pfi allocation fails, instead of performing other operations on pfi. Fixes: 0fe2b18ddc40 ("perf bpf-filter: Support multiple events properly") Signed-off-by: Hao Ge <gehao@kylinos.cn> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: hao.ge@linux.dev Cc: bpf@vger.kernel.org Link: https://lore.kernel.org/r/20241113030537.26732-1-hao.ge@linux.dev Signed-off-by: Namhyung Kim <namhyung@kernel.org>
2024-11-22perf test: Correct hwmon test PMU detectionIan Rogers
Use name to avoid potential other hwmon PMUs. Signed-off-by: Ian Rogers <irogers@google.com> Link: https://lore.kernel.org/r/20241118052638.754981-1-irogers@google.com Signed-off-by: Namhyung Kim <namhyung@kernel.org>
2024-11-22Merge tag 'trace-v6.13' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace Pull tracing updates from Steven Rostedt: - Addition of faultable tracepoints There's a tracepoint attached to both a system call entry and exit. This location is known to allow page faults. The tracepoints are called under an rcu_read_lock() which does not allow faults that can sleep. This limits the ability of tracepoint handlers to page fault in user space system call parameters. Now these tracepoints have been made "faultable", allowing the callbacks to fault in user space parameters and record them. Note, only the infrastructure has been implemented. The consumers (perf, ftrace, BPF) now need to have their code modified to allow faults. - Fix up of BPF code for the tracepoint faultable logic - Update tracepoints to use the new static branch API - Remove trace_*_rcuidle() variants and the SRCU protection they used - Remove unused TRACE_EVENT_FL_FILTERED logic - Replace strncpy() with strscpy() and memcpy() - Use replace per_cpu_ptr(smp_processor_id()) with this_cpu_ptr() - Fix perf events to not duplicate samples when tracing is enabled - Replace atomic64_add_return(1, counter) with atomic64_inc_return(counter) - Make stack trace buffer 4K instead of PAGE_SIZE - Remove TRACE_FLAG_IRQS_NOSUPPORT flag as it was never used - Get the true return address for function tracer when function graph tracer is also running. When function_graph trace is running along with function tracer, the parent function of the function tracer sometimes is "return_to_handler", which is the function graph trampoline to record the exit of the function. Use existing logic that calls into the fgraph infrastructure to find the real return address. - Remove (un)regfunc pointers out of tracepoint structure - Added last minute bug fix for setting pending modules in stack function filter. echo "write*:mod:ext3" > /sys/kernel/tracing/stack_trace_filter Would cause a kernel NULL dereference. - Minor clean ups * tag 'trace-v6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: (31 commits) ftrace: Fix regression with module command in stack_trace_filter tracing: Fix function name for trampoline ftrace: Get the true parent ip for function tracer tracing: Remove redundant check on field->field in histograms bpf: ensure RCU Tasks Trace GP for sleepable raw tracepoint BPF links bpf: decouple BPF link/attach hook and BPF program sleepable semantics bpf: put bpf_link's program when link is safe to be deallocated tracing: Replace strncpy() with strscpy() when copying comm tracing: Add might_fault() check in __DECLARE_TRACE_SYSCALL tracing: Fix syscall tracepoint use-after-free tracing: Introduce tracepoint_is_faultable() tracing: Introduce tracepoint extended structure tracing: Remove TRACE_FLAG_IRQS_NOSUPPORT tracing: Replace multiple deprecated strncpy with memcpy tracing: Make percpu stack trace buffer invariant to PAGE_SIZE tracing: Use atomic64_inc_return() in trace_clock_counter() trace/trace_event_perf: remove duplicate samples on the first tracepoint event tracing/bpf: Add might_fault check to syscall probes tracing/perf: Add might_fault check to syscall probes tracing/ftrace: Add might_fault check to syscall probes ...
2024-11-22Merge tag 'trace-tools-v6.13' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace Pull tracing tools updates from Steven Rostedt: - Add ':' to getopt option 'trace-buffer-size' in timerlat_hist for consistency - Remove unused sched_getattr define - Rename sched_setattr() helper to syscall_sched_setattr() to avoid conflicts - Update counters to long from int to avoid overflow - Add libcpupower dependency detection - Add --deepest-idle-state to timerlat to limit deep idle sleeps - Other minor clean ups and documentation changes * tag 'trace-tools-v6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: verification/dot2: Improve dot parser robustness tools/rtla: Improve exception handling in timerlat_load.py tools/rtla: Enhance argument parsing in timerlat_load.py tools/rtla: Improve code readability in timerlat_load.py rtla/timerlat: Do not set params->user_workload with -U rtla: Documentation: Mention --deepest-idle-state rtla/timerlat: Add --deepest-idle-state for hist rtla/timerlat: Add --deepest-idle-state for top rtla/utils: Add idle state disabling via libcpupower rtla: Add optional dependency on libcpupower tools/build: Add libcpupower dependency detection rtla/timerlat: Make timerlat_hist_cpu->*_count unsigned long long rtla/timerlat: Make timerlat_top_cpu->*_count unsigned long long tools/rtla: fix collision with glibc sched_attr/sched_set_attr tools/rtla: drop __NR_sched_getattr rtla: Fix consistency in getopt_long for timerlat_hist rv: Fix a typo tools/rv: Correct the grammatical errors in the comments tools/rv: Correct the grammatical errors in the comments rtla: use the definition for stdout fd when calling isatty()
2024-11-22Merge tag 'trace-ring-buffer-v6.13' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace Pull trace ring-buffer updates from Steven Rostedt: - Limit time interrupts are disabled in rb_check_pages() rb_check_pages() is called after the ring buffer size is updated to make sure that the ring buffer has not been corrupted. Commit c2274b908db0 ("ring-buffer: Fix a race between readers and resize checks") fixed a race with the check pages and simultaneous resizes to the ring buffer by adding a raw_spin_lock_irqsave() around the check operation. Although this was a simple fix, it would hold interrupts disabled for non determinative amount of time. This could harm PREEMPT_RT operations. Instead, modify the logic by adding a counter when the buffer is modified and to release the raw_spin_lock() at each iteration. It checks the counter under the lock to see if a modification happened during the loop, and if it did, it would restart the loop up to 3 times. After 3 times, it will simply exit the check, as it is unlikely that would ever happen as buffer resizes are rare occurrences. - Replace some open coded str_low_high() with the helper - Fix some documentation/comments * tag 'trace-ring-buffer-v6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: ring-buffer: Correct a grammatical error in a comment ring-buffer: Use str_low_high() helper in ring_buffer_producer() ring-buffer: Reorganize kerneldoc parameter names ring-buffer: Limit time with disabled interrupts in rb_check_pages()
2024-11-22Merge tag 'x86_tdx_for_6.13-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull tdx updates from Dave Hansen: "These essentially refine some interactions between TDX guests and VMMs. The first leverages a new TDX module feature to runtime disable the ability for a VM to inject #VE exceptions. Before this feature, there was only a static on/off switch and the guest had to panic if it was configured in a bad state. The second lets the guest opt in to be able to access the topology CPUID leaves. Before this, accesses to those leaves would #VE. For both of these, it would have been nicest to just change the default behavior, but some pesky "other" OSes evidently need to retain the legacy behavior. Summary: - Add new infrastructure for reading TDX metadata - Use the newly-available metadata to: - Disable potentially nasty #VE exceptions - Get more complete CPU topology information from the VMM" * tag 'x86_tdx_for_6.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/tdx: Enable CPU topology enumeration x86/tdx: Dynamically disable SEPT violations from causing #VEs x86/tdx: Rename tdx_parse_tdinfo() to tdx_setup() x86/tdx: Introduce wrappers to read and write TD metadata
2024-11-22Merge tag 'x86_misc_for_6.13-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull misc x86 updates from Dave Hansen: "As usual for this branch, these are super random: a compile fix for some newish LLVM checks and making sure a Kconfig text reference to 'RSB' matches the normal definition: - Rework some CPU setup code to keep LLVM happy on 32-bit - Correct RSB terminology in Kconfig text" * tag 'x86_misc_for_6.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/cpu: Make sure flag_is_changeable_p() is always being used x86/bugs: Correct RSB terminology in Kconfig
2024-11-22Merge tag 'x86_sgx_for_6.13-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull sgx update from Dave Hansen: - Use vmalloc_array() instead of vmalloc() * tag 'x86_sgx_for_6.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/sgx: Use vmalloc_array() instead of vmalloc()
2024-11-22Merge tag 'cxl-for-6.13' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl Pull cxl updates from Dave Jiang: - Constify range_contains() input parameters to prevent changes - Add support for displaying RCD capabilities in sysfs to support lspci for CXL device - Downgrade warning message to debug in cxl_probe_component_regs() - Add support for adding a printf specifier '%pra' to emit 'struct range' content: - Add sanity tests for 'struct resource' - Add documentation for special case - Add %pra for 'struct range' - Add %pra usage in CXL code - Add preparation code for DCD support: - Add range_overlaps() - Add CDAT DSMAS table shared and read only flag in ACPICA - Add documentation to 'struct dev_dax_range' - Delay event buffer allocation in CXL PCI code until needed - Use guard() in cxl_dpa_set_mode() - Refactor create region code to consolidate common code * tag 'cxl-for-6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl: cxl/region: Refactor common create region code cxl/hdm: Use guard() in cxl_dpa_set_mode() cxl/pci: Delay event buffer allocation dax: Document struct dev_dax_range ACPI/CDAT: Add CDAT/DSMAS shared and read only flag values range: Add range_overlaps() cxl/cdat: Use %pra for dpa range outputs printf: Add print format (%pra) for struct range Documentation/printf: struct resource add start == end special case test printf: Add very basic struct resource tests cxl: downgrade a warning message to debug level in cxl_probe_component_regs() cxl/pci: Add sysfs attribute for CXL 1.1 device link status cxl/core/regs: Add rcd_pcie_cap initialization kernel/range: Const-ify range_contains parameters
2024-11-22ACPI: introduce acpi_arch_init()Miao Wang
To avoid arch-specific code in general ACPI initialization flow, introduce a weak symbol acpi_arch_init(). Currently, arm64 and riscv can utillize this to insert their arch-specific flow. In the future, other architectures can also have a chance to define their own arch-specific ACPI initialization process if necessary. Reviewed-by: Sunil V L <sunilvl@ventanamicro.com> Reviewed-by: Sudeep Holla <sudeep.holla@arm.com> Acked-by: Hanjun Guo <guohanjun@huawei.com> Signed-off-by: Miao Wang <shankerwangmiao@gmail.com> Link: https://patch.msgid.link/20241121-intro-acpi-arch-init-v4-1-b1fb517e7d8b@gmail.com [ rjw: Subject and changelog edits ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2024-11-22Merge branch 'pm-cpuidle'Rafael J. Wysocki
Merge additional cpuidle changes for 6.13-rc1: - Make cpuidle_play_dead() try all idle states with :enter_dead() callbacks and change their return type to void (Rafael Wysocki). * pm-cpuidle: cpuidle: Change :enter_dead() driver callback return type to void cpuidle: Do not return from cpuidle_play_dead() on callback failures
2024-11-22ACPI: x86: Clean up Asus entries in acpi_quirk_skip_dmi_ids[]Hans de Goede
The Asus entries in the acpi_quirk_skip_dmi_ids[] table are the only entries without a comment which model they apply to. Add these comments. The Asus TF103C entry also is in the wrong place for what is supposed to be an alphabetically sorted list. Move it up so that the list is properly sorted and add a comment that the list is alphabetically sorted. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Link: https://patch.msgid.link/20241116095825.11660-2-hdegoede@redhat.com [ rjw: Changelog and subject edits ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2024-11-22ACPI: x86: Add skip i2c clients quirk for Acer Iconia One 8 A1-840Hans de Goede
The Acer Iconia One 8 A1-840 (not to be confused with the A1-840FHD which is a different model) ships with Android 4.4 as factory OS and has the usual broken DSDT issues for x86 Android tablets. Add quirks to skip ACPI I2C client enumeration and disable ACPI battery/AC and ACPI GPIO event handlers. Also add the "INT33F5" HID for the TI PMIC used on this tablet to the list of HIDs for which not to skip i2c_client instantiation, since we do want an ACPI instantiated i2c_client for the PMIC. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Link: https://patch.msgid.link/20241116095825.11660-1-hdegoede@redhat.com Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2024-11-22m68k: mvme147, mvme16x: Adopt rtc-m48t59 platform driverFinn Thain
Both mvme147 and mvme16x platforms have their own RTC driver implementations that duplicate functionality provided by the rtc-m48t59 driver. Adopt the rtc-m48t59 driver and remove the other ones. Tested-by: Daniel Palmer <daniel@0x0f.com> Signed-off-by: Finn Thain <fthain@linux-m68k.org> Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Link: https://lore.kernel.org/r/19a16bcc94c42ea9c5397b37b1918c2937e3faab.1731450735.git.fthain@linux-m68k.org Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2024-11-22iommu: Rename ops->domain_alloc_user() to domain_alloc_paging_flags()Jason Gunthorpe
Now that the main domain allocating path is calling this function it doesn't make sense to leave it named _user. Change the name to alloc_paging_flags() to mirror the new iommu_paging_domain_alloc_flags() function. A driver should implement only one of ops->domain_alloc_paging() or ops->domain_alloc_paging_flags(). The former is a simpler interface with less boiler plate that the majority of drivers use. The latter is for drivers with a greater feature set (PASID, multiple page table support, advanced iommufd support, nesting, etc). Additional patches will be needed to achieve this. Link: https://patch.msgid.link/r/2-v1-c252ebdeb57b+329-iommu_paging_flags_jgg@nvidia.com Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2024-11-22iommu: Add ops->domain_alloc_nested()Jason Gunthorpe
It turns out all the drivers that are using this immediately call into another function, so just make that function directly into the op. This makes paging=NULL for domain_alloc_user and we can remove the argument in the next patch. The function mirrors the similar op in the viommu that allocates a nested domain on top of the viommu's nesting parent. This version supports cases where a viommu is not being used. Link: https://patch.msgid.link/r/1-v1-c252ebdeb57b+329-iommu_paging_flags_jgg@nvidia.com Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2024-11-22Merge tag 'iommu-updates-v6.13' of ↵Jason Gunthorpe
ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/iommu/linux into iommufd.git Merge with Joerg's tree for dependencies on the next patches. ====================================== IOMMU Updates for Linux v6.13: Including: - Core Updates: - Convert call-sites using iommu_domain_alloc() to more specific versions and remove function. - Introduce iommu_paging_domain_alloc_flags(). - Extend support for allocating PASID-capable domains to more drivers. - Remove iommu_present(). - Some smaller improvements. - New IOMMU driver for RISC-V. - Intel VT-d Updates: - Add domain_alloc_paging support. - Enable user space IOPFs in non-PASID and non-svm cases. - Small code refactoring and cleanups. - Add domain replacement support for pasid. - AMD-Vi Updates: - Adapt to iommu_paging_domain_alloc_flags() interface and alloc V2 page-tables by default. - Replace custom domain ID allocator with IDA allocator. - Add ops->release_domain() support. - Other improvements to device attach and domain allocation code paths. - ARM-SMMU Updates: - SMMUv2: - Return -EPROBE_DEFER for client devices probing before their SMMU. - Devicetree binding updates for Qualcomm MMU-500 implementations. - SMMUv3: - Minor fixes and cleanup for NVIDIA's virtual command queue driver. - IO-PGTable: - Fix indexing of concatenated PGDs and extend selftest coverage. - Remove unused block-splitting support. - S390 IOMMU: - Implement support for blocking domain. - Mediatek IOMMU: - Enable 35-bit physical address support for mt8186. - OMAP IOMMU driver: - Adapt to recent IOMMU core changes and unbreak driver. ====================================== Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2024-11-22docs: Add debugging guide for the media subsystemSebastian Fricke
Provide a guide for developers on how to debug code with a focus on the media subsystem. This document aims to provide a rough overview over the possibilities and a rational to help choosing the right tool for the given circumstances. Signed-off-by: Sebastian Fricke <sebastian.fricke@collabora.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20241028-media_docs_improve_v3-v3-2-edf5c5b3746f@collabora.com
2024-11-22docs: Add debugging section to processSebastian Fricke
This idea was formed after noticing that new developers experience certain difficulty to navigate within the multitude of different debugging options in the Kernel and while there often is good documentation for the tools, the developer has to know first that they exist and where to find them. Add a general debugging section to the Kernel documentation, as an easily locatable entry point to other documentation and as a general guideline for the topic. Signed-off-by: Sebastian Fricke <sebastian.fricke@collabora.com> Reviewed-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20241028-media_docs_improve_v3-v3-1-edf5c5b3746f@collabora.com
2024-11-22docs/licensing: Clarify wording about "GPL" and "Proprietary"Uwe Kleine-König
There are currently some doubts about out-of-tree kernel modules licensed under GPLv3 and if they are supposed to be able to use symbols exported using EXPORT_SYMBOL_GPL. Clarify that "Proprietary" means anything non-GPL2 even though the license might be an open source license. Also disambiguate "GPL compatible" to "GPLv2 compatible". Signed-off-by: Uwe Kleine-König <ukleinek@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20241115103842.585207-2-ukleinek@kernel.org
2024-11-22docs: core-api/gfp_mask-from-fs-io: indicate that vmalloc supports ↵Pavel Tikhomirov
GFP_NOFS/GFP_NOIO After the commit 451769ebb7e79 ("mm/vmalloc: alloc GFP_NO{FS,IO} for vmalloc") in v5.17 it is now safe to use GFP_NOFS/GFP_NOIO flags in [k]vmalloc, let's reflect it in documentation. Signed-off-by: Pavel Tikhomirov <ptikhomirov@virtuozzo.com> Acked-by: Michal Hocko <mhocko@suse.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20241119093922.567138-1-ptikhomirov@virtuozzo.com
2024-11-22Documentation: kernel-doc: enumerate identifier *type*sRandy Dunlap
Explain that a kernel-doc :identifiers: line can refer to a struct, union, enum, or typedef as well as functions. Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20241119203201.110953-1-rdunlap@infradead.org
2024-11-22Documentation: pwrseq: Fix trivial misspellingsJavier Carrasco
Use proper spelling for 'discrete'. When at it, capitalize 'Linux', which is common practice in the documentation. Signed-off-by: Javier Carrasco <javier.carrasco.cruz@gmail.com> Reviewed-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20241120-pwrseq-doc-trivial-fixes-v1-1-19a70f4dd156@gmail.com
2024-11-22Documentation: filesystems: update filename extensionsRandy Dunlap
Update references to most txt files to rst files. Update one reference to an md file to a rst file. Update one file path to its current location. Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: linux-doc@vger.kernel.org Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Christian Brauner <brauner@kernel.org> Cc: Jan Kara <jack@suse.cz> Cc: linux-fsdevel@vger.kernel.org Cc: Ian Kent <raven@themaw.net> Cc: autofs@vger.kernel.org Cc: Alexander Aring <aahringo@redhat.com> Cc: David Teigland <teigland@redhat.com> Cc: gfs2@lists.linux.dev Cc: Eric Biggers <ebiggers@kernel.org> Cc: Theodore Y. Ts'o <tytso@mit.edu> Cc: fsverity@lists.linux.dev Cc: Mark Fasheh <mark@fasheh.com> Cc: Joel Becker <jlbec@evilplan.org> Cc: Joseph Qi <joseph.qi@linux.alibaba.com> Cc: ocfs2-devel@lists.linux.dev Reviewed-by: Christian Brauner (Microsoft) <brauner@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20241120055246.158368-1-rdunlap@infradead.org
2024-11-22net/9p/usbg: allow building as standalone moduleDominique Martinet
There is no reason only the usbg transport would not be its own module, so make it tristate. In particular, this fixes a couple of issues the current bool had: - trans_usbg was apparently not compiled at all when NET_9P=m - the workaround added in commit 2193ede180dd ("net/9p/usbg: fix CONFIG_USB_GADGET dependency") became redundant because a tristate item cannot be built-in when its dependency is a module, so we can depend on USB_GADGET "normally" again. Cc: Michael Grzeschik <m.grzeschik@pengutronix.de> Link: https://lkml.kernel.org/r/ZzhWRPDNwu225NWz@codewreck.org Message-ID: <20241122144754.1231919-1-asmadeus@codewreck.org> Signed-off-by: Dominique Martinet <asmadeus@codewreck.org>
2024-11-229p/xen: fix release of IRQAlex Zenla
Kernel logs indicate an IRQ was double-freed. Pass correct device ID during IRQ release. Fixes: 71ebd71921e45 ("xen/9pfs: connect to the backend") Signed-off-by: Alex Zenla <alex@edera.dev> Signed-off-by: Alexander Merritt <alexander@edera.dev> Signed-off-by: Ariadne Conill <ariadne@ariadne.space> Reviewed-by: Juergen Gross <jgross@suse.com> Message-ID: <20241121225100.5736-1-alexander@edera.dev> [Dominique: remove confusing variable reset to 0] Signed-off-by: Dominique Martinet <asmadeus@codewreck.org>
2024-11-22Fix a potential abuse of seq_printf() format string in driversDavid Wang
Using device name as format string of seq_printf() is proned to "Format string attack", opens possibility for exploitation. Seq_puts() is safer and more efficient. Signed-off-by: David Wang <00107082@163.com> Reviewed-by: Kees Cook <kees@kernel.org> Link: https://lore.kernel.org/r/20241120053055.225195-1-00107082@163.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-11-22gpio: mpsse: Remove usage of the deprecated ida_simple_xx() APIChristophe JAILLET
ida_alloc() and ida_free() should be preferred to the deprecated ida_simple_get() and ida_simple_remove(). This is less verbose. Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Link: https://lore.kernel.org/r/2ce706d3242b9d3e4b9c20c0a7d9a8afcf8897ec.1729423829.git.christophe.jaillet@wanadoo.fr Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2024-11-22drm/i915/irq: emphasize display_irqs_enabled is only about VLV/CHVJani Nikula
Use display_irqs_enabled only on VLV/CHV where it's relevant. Rename to vlv_display_irqs_enabled, to emphasize it's really only about VLV/CHV. Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/f60104ea59687cb8c65b18b4f9ddd832a643407d.1732102179.git.jani.nikula@intel.com Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2024-11-22drm/i915/irq: hide display_irqs_enabled accessJani Nikula
Move the check for display_irqs_enabled within vlv_display_irq_reset() and vlv_display_irq_postinstall() to avoid looking at struct intel_display members within i915 core irq code. Within display irq code, vlv_display_irq_reset() may need to be called with !display_irqs_enabled, so add a small wrapper. Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/ef43e26ebab7f84768391f5053c0eba44b647c89.1732102179.git.jani.nikula@intel.com Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2024-11-22drm/i915/plane: convert initial plane setup to struct intel_displayJani Nikula
struct intel_display replaces struct drm_i915_private as the main display device pointer. Convert initial plane setup to it, as much as possible. Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/9e370d8e90235165539f81ca2d00fdd2e883397f.1732102179.git.jani.nikula@intel.com Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2024-11-22drm/i915/overlay: add intel_overlay_available() and use itJani Nikula
Avoid accessing struct intel_display members directly from i915_getparam_ioctl(). Add intel_overlay_available() function to provide the information for I915_PARAM_HAS_OVERLAY. Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/26041645168ce3e76cb8f73bcb4c747619117e06.1732102179.git.jani.nikula@intel.com Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2024-11-22drm/i915/overlay: convert to struct intel_displayJani Nikula
struct intel_display replaces struct drm_i915_private as the main display device pointer. Convert overlay to it, as much as possible. Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/3680586c05e82fd01d173cfb4f8df015d6db663c.1732102179.git.jani.nikula@intel.com Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2024-11-22drm/i915/ddi: simplify intel_ddi_get_encoder_pipes() slightlyJani Nikula
Use a temporary variable for DDI mode to simplify the conditions. This is in line with the other places that read DDI mode. Reviewed-by: Imre Deak <imre.deak@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/84892d31807bd8118474dd873e73c4d459f61448.1732106557.git.jani.nikula@intel.com Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2024-11-22drm/i915/ddi: refactor intel_ddi_connector_get_hw_state()Jani Nikula
Refactor the switch-case into an if-ladder similar to intel_ddi_read_func_ctl() for clarity. This highlights how TRANS_DDI_MODE_SELECT_FDI_OR_128B132B works on different platforms. Reviewed-by: Imre Deak <imre.deak@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/191f0210d720f3113a092e1ef0c7996a7dee85a0.1732106557.git.jani.nikula@intel.com Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2024-11-22drm/i915/ddi: split up intel_ddi_read_func_ctl() by output typeJani Nikula
The function has become quite long, and the switch-case statement quite complex with the fallthrougs. Simplify by splitting to individual functions and an if-ladder. This highlights how TRANS_DDI_MODE_SELECT_FDI_OR_128B132B works on different platforms. Reviewed-by: Imre Deak <imre.deak@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/2621df6e6b0b7ac75159cfb112755c35b30ce906.1732106557.git.jani.nikula@intel.com Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2024-11-22drm/i915/ddi: rename temp to ddi_func_ctl in intel_ddi_read_func_ctl()Jani Nikula
The temp name is a bit vague for something used so much in the function. Reviewed-by: Imre Deak <imre.deak@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/29d21b8f829e8139cc8ad857a86d3fc967f2ac07.1732106557.git.jani.nikula@intel.com Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2024-11-22drm/i915/dp: refactor clear/wait for act sentJani Nikula
Move clear_act_sent() and wait_for_act_sent() to intel_ddi.[ch] and make independent of DP MST. They'll be needed for 128b/132b SST operation. Rename accordingly. Reviewed-by: Imre Deak <imre.deak@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/ef05f5bc222e8ba48d84f75a9ea5dd29667055d2.1732106557.git.jani.nikula@intel.com Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2024-11-22drm/i915/reg: convert DP_TP_CTL/DP_TP_STATUS to REG_BIT() and friendsJani Nikula
Use the modern style for defining register contents. Expand the status register contents a bit. TODO: There are more VC payload mapping fields, spanning more registers, and have more bits on more recent platforms. v2: - Fix DP_TP_STATUS_STREAMS_ENABLED_MASK mask (Imre) - Drop status VC3 payload mapping for now Cc: Imre Deak <imre.deak@intel.com> Reviewed-by: Imre Deak <imre.deak@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/1ef15e6bb58ca847f89c9b39cbc9771cb57db408.1732106557.git.jani.nikula@intel.com Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2024-11-22drm/i915/ddi: use intel_ddi_* naming convention for encoder enable/disableJani Nikula
All the other encoder hooks are named intel_ddi_*, follow suit with intel_ddi_enable() and intel_ddi_disable(), and the dp/hdmi variants. Reviewed-by: Imre Deak <imre.deak@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/9533cf61773f2cab3a6a29acf9e6ecfc00b6e8fd.1732106557.git.jani.nikula@intel.com Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2024-11-22drm/i915/mst: unify MST topology callback naming to mst_topology_*Jani Nikula
Make it easier to keep track of what belongs where. Reviewed-by: Imre Deak <imre.deak@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/e8efc8fddc3ca93e1256a1dad13bc4eca07c3382.1732106557.git.jani.nikula@intel.com Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2024-11-22drm/i915/mst: simplify mst_connector_get_hw_state()Jani Nikula
Use a variable for the encoder to simplify. Reviewed-by: Imre Deak <imre.deak@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/eb8595ae36c6330cce1615059bd2c89a7db79668.1732106557.git.jani.nikula@intel.com Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2024-11-22drm/i915/mst: unify MST connector function naming to mst_connector_*Jani Nikula
Similar to commit 5674e700d43e ("drm/i915/mst: change naming from fake encoders to MST stream encoders"), name all MST connector related functions to mst_connector_*. Reviewed-by: Imre Deak <imre.deak@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/3d4814a94b97fcff88722e0effd2fb5893b256af.1732106557.git.jani.nikula@intel.com Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2024-11-22drm/i915/mst: pass intel_dp around in mst stream helpersJani Nikula
All of the functions in question operate on the primary encoder, and more specifically the primary intel_dp, so pass it around instead of the encoder for less ambiguity. Suggested-by: Imre Deak <imre.deak@intel.com> Reviewed-by: Imre Deak <imre.deak@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/165ee8b723c42bcdeb3adf6a1b34ea09371e5d64.1732106557.git.jani.nikula@intel.com Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2024-11-22fs/proc/kcore.c: Clear ret value in read_kcore_iter after successful ↵Jiri Olsa
iov_iter_zero If iov_iter_zero succeeds after failed copy_from_kernel_nofault, we need to reset the ret value to zero otherwise it will be returned as final return value of read_kcore_iter. This fixes objdump -d dump over /proc/kcore for me. Cc: stable@vger.kernel.org Cc: Alexander Gordeev <agordeev@linux.ibm.com> Fixes: 3d5854d75e31 ("fs/proc/kcore.c: allow translation of physical memory addresses") Signed-off-by: Jiri Olsa <jolsa@kernel.org> Link: https://lore.kernel.org/r/20241121231118.3212000-1-jolsa@kernel.org Acked-by: Alexander Gordeev <agordeev@linux.ibm.com> Signed-off-by: Christian Brauner <brauner@kernel.org>
generated by cgit (git 2.34.1) at 2025-09-15 12:25:06 +0000