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2025-03-04Coresight: Add Coresight TMC Control Unit driverJie Gan
The Coresight TMC Control Unit hosts miscellaneous configuration registers which control various features related to TMC ETR sink. Based on the trace ID, which is programmed in the related CTCU ATID register of a specific ETR, trace data with that trace ID gets into the ETR buffer, while other trace data gets dropped. Enabling source device sets one bit of the ATID register based on source device's trace ID. Disabling source device resets the bit according to the source device's trace ID. Reviewed-by: James Clark <james.clark@linaro.org> Signed-off-by: Jie Gan <quic_jiegan@quicinc.com> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Link: https://lore.kernel.org/r/20250303032931.2500935-10-quic_jiegan@quicinc.com
2025-03-04Coresight: Change to read the trace ID from coresight_pathJie Gan
The source device can directly read the trace ID from the coresight_path which result in etm_read_alloc_trace_id and etm4_read_alloc_trace_id being deleted. Co-developed-by: James Clark <james.clark@linaro.org> Signed-off-by: James Clark <james.clark@linaro.org> Signed-off-by: Jie Gan <quic_jiegan@quicinc.com> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Link: https://lore.kernel.org/r/20250303032931.2500935-7-quic_jiegan@quicinc.com
2025-03-04Coresight: Introduce a new struct coresight_pathJie Gan
Introduce a new strcuture, 'struct coresight_path', to store the data that utilized by the devices in the path. The coresight_path will be built/released by coresight_build_path/coresight_release_path functions. Signed-off-by: Jie Gan <quic_jiegan@quicinc.com> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Link: https://lore.kernel.org/r/20250303032931.2500935-5-quic_jiegan@quicinc.com
2025-03-04sched_ext: Add trace point to track sched_ext core eventsChangwoo Min
Add tracing support to track sched_ext core events (/sched_ext/sched_ext_event). This may be useful for debugging sched_ext schedulers that trigger a particular event. The trace point can be used as other trace points, so it can be used in, for example, `perf trace` and BPF programs, as follows: ====== $> sudo perf trace -e sched_ext:sched_ext_event --filter 'name == "SCX_EV_ENQ_SLICE_DFL"' ====== ====== struct tp_sched_ext_event { struct trace_entry ent; u32 __data_loc_name; s64 delta; }; SEC("tracepoint/sched_ext/sched_ext_event") int rtp_add_event(struct tp_sched_ext_event *ctx) { char event_name[128]; unsigned short offset = ctx->__data_loc_name & 0xFFFF; bpf_probe_read_str((void *)event_name, 128, (char *)ctx + offset); bpf_printk("name %s delta %lld", event_name, ctx->delta); return 0; } ====== Signed-off-by: Changwoo Min <changwoo@igalia.com> Acked-by: Andrea Righi <arighi@nvidia.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2025-03-04tracing: Fix DECLARE_TRACE_CONDITIONGabriele Monaco
Commit 287050d39026 ("tracing: Add TRACE_EVENT_CONDITIONAL()") adds macros to define conditional trace events (TRACE_EVENT_CONDITIONAL) and tracepoints (DECLARE_TRACE_CONDITION), but sets up functionality for direct use only for the former. Add preprocessor bits in define_trace.h to allow usage of DECLARE_TRACE_CONDITION just like DECLARE_TRACE. Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Juri Lelli <juri.lelli@redhat.com> Link: https://lore.kernel.org/20250218123121.253551-2-gmonaco@redhat.com Fixes: 287050d39026 ("tracing: Add TRACE_EVENT_CONDITIONAL()") Link: https://lore.kernel.org/linux-trace-kernel/20250128111926.303093-1-gmonaco@redhat.com Reviewed-by: Masami Hiramatsu (Google) <mhiramat@kernel.org> Signed-off-by: Gabriele Monaco <gmonaco@redhat.com> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
2025-03-04mm: Remove wait_on_page_locked()Matthew Wilcox (Oracle)
This compatibility wrapper has no callers left, so remove it. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Reviewed-by: Chao Yu <chao@kernel.org> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2025-03-04mm: Remove grab_cache_page_write_begin()Matthew Wilcox (Oracle)
All callers have now been converted to use folios, so remove this compatibility wrapper. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Reviewed-by: Chao Yu <chao@kernel.org> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2025-03-04mm: Remove wait_for_stable_page()Matthew Wilcox (Oracle)
The last caller has been converted to call folio_wait_stable(), so we can remove this wrapper. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Reviewed-by: Chao Yu <chao@kernel.org> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2025-03-04Merge tag 'wireless-next-2025-03-04-v2' of ↵Jakub Kicinski
https://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next Johannes Berg says: ==================== First 6.15 material: * cfg80211/mac80211 - remove cooked monitor support - strict mode for better AP testing - basic EPCS support - OMI RX bandwidth reduction support * rtw88 - preparation for RTL8814AU support * rtw89 - use wiphy_lock/wiphy_work - preparations for MLO - BT-Coex improvements - regulatory support in firmware files * iwlwifi - preparations for the new iwlmld sub-driver * tag 'wireless-next-2025-03-04-v2' of https://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next: (128 commits) wifi: iwlwifi: remove mld/roc.c wifi: mac80211: refactor populating mesh related fields in sinfo wifi: cfg80211: reorg sinfo structure elements for mesh wifi: iwlwifi: Fix spelling mistake "Increate" -> "Increase" wifi: iwlwifi: add Debug Host Command APIs wifi: iwlwifi: add IWL_MAX_NUM_IGTKS macro wifi: iwlwifi: add OMI bandwidth reduction APIs wifi: iwlwifi: remove mvm prefix from iwl_mvm_d3_end_notif wifi: iwlwifi: remember if the UATS table was read successfully wifi: iwlwifi: export iwl_get_lari_config_bitmap wifi: iwlwifi: add support for external 32 KHz clock wifi: iwlwifi: mld: add a debug level for EHT prints wifi: iwlwifi: mld: add a debug level for PTP prints wifi: iwlwifi: remove mvm prefix from iwl_mvm_esr_mode_notif wifi: iwlwifi: use 0xff instead of 0xffffffff for invalid wifi: iwlwifi: location api cleanup wifi: cfg80211: expose update timestamp to drivers wifi: mac80211: add ieee80211_iter_chan_contexts_mtx wifi: mac80211: fix integer overflow in hwmp_route_info_get() wifi: mac80211: Fix possible integer promotion issue ... ==================== Link: https://patch.msgid.link/20250304125605.127914-3-johannes@sipsolutions.net Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-03-04drivers: firewire: firewire-cdev.h: fix identation on a kernel-doc markupMauro Carvalho Chehab
The description of @tstamp parameter has one line that starts at the beginning. This moves such line to the description, which is not the intent here. Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Link: https://lore.kernel.org/r/8238bed1c0375e6b389a8cafe1ad99fdeb1cb1f2.1740387599.git.mchehab+huawei@kernel.org Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2025-03-04include/asm-generic/io.h: fix kerneldoc markupMauro Carvalho Chehab
Kerneldoc requires a "-" after the name of a function for it to be recognized as a function. Add it. Fix those kernel-doc warnings: include/asm-generic/io.h:1215: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst * memset_io Set a range of I/O memory to a constant value include/asm-generic/io.h:1227: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst * memcpy_fromio Copy a block of data from I/O memory include/asm-generic/io.h:1239: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst * memcpy_toio Copy a block of data into I/O memory Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Acked-by: Arnd Bergmann <arnd@arndb.de> Link: https://lore.kernel.org/r/066968c00196ed88f6dc97e3d317926fc4ab7d52.1740387599.git.mchehab+huawei@kernel.org Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2025-03-04ASoC: Tidy up SOC_DOUBLE_* and SOC_SINGLE_* helpersCharles Keepax
Re-implement SOC_DOUBLE_VALUE() in terms of SOC_DOUBLE_S_VALUE(). SOC_DOUBLE_S_VALUE() already had a minimum value so add this to SOC_DOUBLE_VALUE as well, this allows replacement of several hard coded value entries. Likewise update SOC_SINGLE_VALUE to match, which allows replacement of even more hard coded values. Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com> Link: https://patch.msgid.link/20250304140500.976127-14-ckeepax@opensource.cirrus.com Signed-off-by: Mark Brown <broonie@kernel.org>
2025-03-04ftrace: Add print_function_args()Sven Schnelle
Add a function to decode argument types with the help of BTF. Will be used to display arguments in the function and function graph tracer. It can only handle simply arguments and up to FTRACE_REGS_MAX_ARGS number of arguments. When it hits a max, it will print ", ...": page_to_skb(vi=0xffff8d53842dc980, rq=0xffff8d53843a0800, page=0xfffffc2e04337c00, offset=6160, len=64, truesize=1536, ...) And if it hits an argument that is not recognized, it will print the raw value and the type of argument it is: make_vfsuid(idmap=0xffffffff87f99db8, fs_userns=0xffffffff87e543c0, kuid=0x0 (STRUCT)) __pti_set_user_pgtbl(pgdp=0xffff8d5384ab47f8, pgd=0x110e74067 (STRUCT)) Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: Guo Ren <guoren@kernel.org> Cc: Donglin Peng <dolinux.peng@gmail.com> Cc: Zheng Yejian <zhengyejian@huaweicloud.com> Link: https://lore.kernel.org/20250227185822.639418500@goodmis.org Reviewed-by: Masami Hiramatsu (Google) <mhiramat@kernel.org> Co-developed-by: Steven Rostedt (Google) <rostedt@goodmis.org> Signed-off-by: Sven Schnelle <svens@linux.ibm.com> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
2025-03-04Tidy up ASoC VALUE control macrosMark Brown
Merge series from Charles Keepax <ckeepax@opensource.cirrus.com>: Tidy up the ASoC control value macros. Fix some drivers that should be using core macros that aren't, combine the existing core macros to be a little more consistent in style, and update the core macros to use each other where possible.
2025-03-04drm/print: require struct drm_device for drm_err() and friendsJani Nikula
The expectation is that the struct drm_device based logging helpers get passed an actual struct drm_device pointer rather than some random struct pointer where you can dereference the ->dev member. Add a static inline helper to convert struct drm_device to struct device, with the main benefit being the type checking of the macro argument. As a side effect, this also reduces macro argument double references. Reviewed-by: Simona Vetter <simona.vetter@ffwll.ch> Reviewed-by: Louis Chauvet <louis.chauvet@bootlin.com> Reviewed-by: Luca Ceresoli <luca.ceresoli@bootlin.com> Signed-off-by: Jani Nikula <jani.nikula@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/dfe6e774883e6ef93cfaa2b6fe92b804061ab9d9.1737644530.git.jani.nikula@intel.com
2025-03-04media: rc: reduce useless padding in struct rc_dev etcSean Young
Reorder the fields in these structs so that we waste less space due to padding. pahole shows that lirc_fh is 8 bytes smaller, and rc_dev is 32 bytes smaller. Signed-off-by: Sean Young <sean@mess.org> Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
2025-03-04Coresight: Add trace_id function to retrieving the trace IDJie Gan
Add 'trace_id' function pointer in coresight_ops. It's responsible for retrieving the device's trace ID. Co-developed-by: James Clark <james.clark@linaro.org> Signed-off-by: James Clark <james.clark@linaro.org> Reviewed-by: James Clark <james.clark@linaro.org> Signed-off-by: Jie Gan <quic_jiegan@quicinc.com> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Link: https://lore.kernel.org/r/20250303032931.2500935-3-quic_jiegan@quicinc.com
2025-03-04Coresight: Add support for new APB clock nameJie Gan
Add support for new APB clock-name. If the function fails to obtain the clock with the name "apb_pclk", it will attempt to acquire the clock with the name "apb". Reviewed-by: James Clark <james.clark@linaro.org> Signed-off-by: Jie Gan <quic_jiegan@quicinc.com> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Link: https://lore.kernel.org/r/20250303032931.2500935-2-quic_jiegan@quicinc.com
2025-03-04irqchip/davinci-cp-intc: Remove public headerBartosz Golaszewski
There are no more users of irq-davinci-cp-intc.h (da830.c doesn't use any of its symbols). Remove the header and make the driver stop using the config structure. [ tglx: Mop up coding style ] Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/all/20250304131815.86549-1-brgl@bgdev.pl
2025-03-04Add STM32MP25 SPI NOR supportMark Brown
Merge series from patrice.chotard@foss.st.com: This series adds SPI NOR support for STM32MP25 SoCs from STMicroelectronics. On STM32MP25 SoCs family, an Octo Memory Manager block manages the muxing, the memory area split, the chip select override and the time constraint between its 2 Octo SPI children. Due to these depedencies, this series adds support for: - Octo Memory Manager driver (not applied for SPI). - Octo SPI driver. - yaml schema for Octo Memory Manager and Octo SPI drivers. The device tree files adds Octo Memory Manager and its 2 associated Octo SPI chidren in stm32mp251.dtsi and adds SPI NOR support in stm32mp257f-ev1 board.
2025-03-04net: plumb extack in __dev_change_net_namespace()Nicolas Dichtel
It could be hard to understand why the netlink command fails. For example, if dev->netns_immutable is set, the error is "Invalid argument". Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Kuniyuki Iwashima <kuniyu@amazon.com> Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-03-04net: advertise netns_immutable property via netlinkNicolas Dichtel
Since commit 05c1280a2bcf ("netdev_features: convert NETIF_F_NETNS_LOCAL to dev->netns_local"), there is no way to see if the netns_immutable property s set on a device. Let's add a netlink attribute to advertise it. Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Alexander Lobakin <aleksander.lobakin@intel.com> Reviewed-by: Kuniyuki Iwashima <kuniyu@amazon.com> Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-03-04net: rename netns_local to netns_immutableNicolas Dichtel
The name 'netns_local' is confusing. A following commit will export it via netlink, so let's use a more explicit name. Reported-by: Eric Dumazet <edumazet@google.com> Suggested-by: Kuniyuki Iwashima <kuniyu@amazon.com> Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com> Reviewed-by: Kuniyuki Iwashima <kuniyu@amazon.com> Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-03-04mtd: spinand: Add read retry supportCheng Ming Lin
When the host ECC fails to correct the data error of NAND device, there's a special read for data recovery method which can be setup by the host for the next read. There are several retry levels that can be attempted until the lost data is recovered or definitely assumed lost. Signed-off-by: Cheng Ming Lin <chengminglin@mxic.com.tw> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2025-03-04gpiolib: of: Handle threecell GPIO chipsLinus Walleij
When describing GPIO controllers in the device tree, the ambition of device tree to describe the hardware may require a three-cell scheme: gpios = <&gpio instance offset flags>; This implements support for this scheme in the gpiolib OF core. Drivers that want to handle multiple gpiochip instances from one OF node need to implement a callback similar to this to determine if a certain gpio chip is a pointer to the right instance (pseudo-code): struct my_gpio { struct gpio_chip gcs[MAX_CHIPS]; }; static bool my_of_node_instance_match(struct gpio_chip *gc unsigned int instance) { struct my_gpio *mg = gpiochip_get_data(gc); if (instance >= MAX_CHIPS) return false; return (gc == &mg->gcs[instance]); } probe() { struct my_gpio *mg; struct gpio_chip *gc; int i, ret; for (i = 0; i++; i < MAX_CHIPS) { gc = &mg->gcs[i]; /* This tells gpiolib we have several instances per node */ gc->of_gpio_n_cells = 3; gc->of_node_instance_match = my_of_node_instance_match; gc->base = -1; ... ret = devm_gpiochip_add_data(dev, gc, mg); if (ret) return ret; } } Rename the "simple" of_xlate function to "twocell" which is closer to what it actually does. In the device tree bindings, the provide node needs to specify #gpio-cells = <3>; where the first cell is the instance number: gpios = <&gpio instance offset flags>; Conversely ranges need to have four cells: gpio-ranges = <&pinctrl instance gpio_offset pin_offset count>; Reviewed-by: Alex Elder <elder@riscstar.com> Tested-by: Yixun Lan <dlan@gentoo.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: Rob Herring (Arm) <robh@kernel.org> Link: https://lore.kernel.org/r/20250225-gpio-ranges-fourcell-v3-2-860382ba4713@linaro.org Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2025-03-04Merge branch 'x86/cpu' into x86/asm, to pick up dependent commitsIngo Molnar
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2025-03-04<linux/sizes.h>: Cover all possible x86 CPU cache sizesAhmed S. Darwish
Add size macros for 24/192/384 Kilobytes and 3/6/12/18/24 Megabytes. With that, the x86 subsystem can avoid locally defining its own macros for CPU cache sizes. Signed-off-by: Ahmed S. Darwish <darwi@linutronix.de> Signed-off-by: Ingo Molnar <mingo@kernel.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: "H. Peter Anvin" <hpa@zytor.com> Link: https://lore.kernel.org/r/20250304085152.51092-31-darwi@linutronix.de
2025-03-04Merge branch 'x86/urgent' into x86/cpu, to pick up dependent commitsIngo Molnar
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2025-03-04x86/smp: Fix mwait_play_dead() and acpi_processor_ffh_play_dead() noreturn ↵Josh Poimboeuf
behavior Fix some related issues (done in a single patch to avoid introducing intermediate bisect warnings): 1) The SMP version of mwait_play_dead() doesn't return, but its !SMP counterpart does. Make its calling behavior consistent by resolving the !SMP version to a BUG(). It should never be called anyway, this just enforces that at runtime and enables its callers to be marked as __noreturn. 2) While the SMP definition of mwait_play_dead() is annotated as __noreturn, the declaration isn't. Nor is it listed in tools/objtool/noreturns.h. Fix that. 3) Similar to #1, the SMP version of acpi_processor_ffh_play_dead() doesn't return but its !SMP counterpart does. Make the !SMP version a BUG(). It should never be called. 4) acpi_processor_ffh_play_dead() doesn't return, but is lacking any __noreturn annotations. Fix that. This fixes the following objtool warnings: vmlinux.o: warning: objtool: acpi_processor_ffh_play_dead+0x67: mwait_play_dead() is missing a __noreturn annotation vmlinux.o: warning: objtool: acpi_idle_play_dead+0x3c: acpi_processor_ffh_play_dead() is missing a __noreturn annotation Fixes: a7dd183f0b38 ("x86/smp: Allow calling mwait_play_dead with an arbitrary hint") Fixes: 541ddf31e300 ("ACPI/processor_idle: Add FFH state handling") Reported-by: Paul E. McKenney <paulmck@kernel.org> Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Tested-by: Paul E. McKenney <paulmck@kernel.org> Link: https://lore.kernel.org/r/e885c6fa9e96a61471b33e48c2162d28b15b14c5.1740962711.git.jpoimboe@kernel.org
2025-03-04wait: avoid spurious calls to prepare_to_wait_event() in ___wait_event()Mateusz Guzik
In vast majority of cases the condition determining whether the thread can proceed is true after the first wake up. However, even in that case the thread ends up calling into prepare_to_wait_event() again, suffering a spurious irq + lock trip. Then it calls into finish_wait() to unlink itself. Note that in case of a pending signal the work done by prepare_to_wait_event() gets ignored even without the change. pre-check the condition after waking up instead. Stats gathared during a kernel build: bpftrace -e 'kprobe:prepare_to_wait_event,kprobe:finish_wait \ { @[probe] = count(); }' @[kprobe:finish_wait]: 392483 @[kprobe:prepare_to_wait_event]: 778690 As in calls to prepare_to_wait_event() almost double calls to finish_wait(). This evens out with the patch. Signed-off-by: Mateusz Guzik <mjguzik@gmail.com> Link: https://lore.kernel.org/r/20250303230409.452687-4-mjguzik@gmail.com Signed-off-by: Christian Brauner <brauner@kernel.org>
2025-03-04pipe: cache 2 pages instead of 1Mateusz Guzik
User data is kept in a circular buffer backed by pages allocated as needed. Only having space for one spare is still prone to having to resort to allocation / freeing. In my testing this decreases page allocs by 60% during a kernel build. Signed-off-by: Mateusz Guzik <mjguzik@gmail.com> Link: https://lore.kernel.org/r/20250303230409.452687-3-mjguzik@gmail.com Signed-off-by: Christian Brauner <brauner@kernel.org>
2025-03-04perf/core: Detach 'struct perf_cpu_pmu_context' and 'struct pmu' lifetimesPeter Zijlstra
In prepration for being able to unregister a PMU with existing events, it becomes important to detach struct perf_cpu_pmu_context lifetimes from that of struct pmu. Notably struct perf_cpu_pmu_context embeds a struct perf_event_pmu_context that can stay referenced until the last event goes. Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Reviewed-by: Ravi Bangoria <ravi.bangoria@amd.com> Link: https://lore.kernel.org/r/20241104135518.760214287@infradead.org
2025-03-04perf/core: Merge struct pmu::pmu_disable_count into struct ↵Peter Zijlstra
perf_cpu_pmu_context::pmu_disable_count Because it makes no sense to have two per-cpu allocations per pmu. Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Reviewed-by: Ravi Bangoria <ravi.bangoria@amd.com> Link: https://lore.kernel.org/r/20241104135518.518730578@infradead.org
2025-03-04perf/core: Simplify perf_pmu_register()Peter Zijlstra
Using the previously introduced perf_pmu_free() and a new IDR helper, simplify the perf_pmu_register error paths. Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Acked-by: Ravi Bangoria <ravi.bangoria@amd.com> Link: https://lore.kernel.org/r/20241104135518.198937277@infradead.org
2025-03-04perf/core: Simplify the perf_event_alloc() error pathPeter Zijlstra
The error cleanup sequence in perf_event_alloc() is a subset of the existing _free_event() function (it must of course be). Split this out into __free_event() and simplify the error path. Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Reviewed-by: Ravi Bangoria <ravi.bangoria@amd.com> Link: https://lore.kernel.org/r/20241104135517.967889521@infradead.org
2025-03-04fs: support getname_maybe_null() in move_mount()Christian Brauner
Allow move_mount() to work with NULL path arguments. Link: https://lore.kernel.org/r/20250221-brauner-open_tree-v1-8-dbcfcb98c676@kernel.org Signed-off-by: Christian Brauner <brauner@kernel.org>
2025-03-04ALSA: hda/realtek: Enable PC beep passthrough for HP EliteBook 855 G7Maciej S. Szmigiero
PC speaker works well on this platform in BIOS and in Linux until sound card drivers are loaded. Then it stops working. There seems to be a beep generator node at 0x1a in this CODEC (ALC269_TYPE_ALC215) but it seems to be only connected to capture mixers at nodes 0x22 and 0x23. If I unmute the mixer input for 0x1a at node 0x23 and start recording from its "ALC285 Analog" capture device I can clearly hear beeps in that recording. So the beep generator is indeed working properly, however I wasn't able to figure out any way to connect it to speakers. However, the bits in the "Passthrough Control" register (0x36) seems to work at least partially: by zeroing "B" and "h" and setting "S" I can at least make the PIT PC speaker output appear either in this laptop speakers or headphones (depending on whether they are connected or not). There are some caveats, however: * If the CODEC gets runtime-suspended the beeps stop so it needs HDA beep device for keeping it awake during beeping. * If the beep generator node is generating any beep the PC beep passthrough seems to be temporarily inhibited, so the HDA beep device has to be prevented from using the actual beep generator node - but the beep device is still necessary due to the previous point. * In contrast with other platforms here beep amplification has to be disabled otherwise the beeps output are WAY louder than they were on pure BIOS setup. Unless someone (from Realtek probably) knows how to make the beep generator node output appear in speakers / headphones using PC beep passthrough seems to be the only way to make PC speaker beeping actually work on this platform. Signed-off-by: Maciej S. Szmigiero <mail@maciej.szmigiero.name> Acked-by: kailang@realtek.com Link: https://patch.msgid.link/7461f695b4daed80f2fc4b1463ead47f04f9ad05.1739741254.git.mail@maciej.szmigiero.name Signed-off-by: Takashi Iwai <tiwai@suse.de>
2025-03-04slab: Mark large folios for debugging purposesMatthew Wilcox (Oracle)
If a user calls p = kmalloc(1024); kfree(p); kfree(p); and 'p' was the only object in the slab, we may free the slab after the first call to kfree(). If we do, we clear PGTY_slab and the second call to kfree() will call free_large_kmalloc(). That will leave a trace in the logs ("object pointer: 0x%p"), but otherwise proceed to free the memory, which is likely to corrupt the page allocator's metadata. Allocate a new page type for large kmalloc and mark the memory with it while it's allocated. That lets us detect this double-free and return without harming any data structures. Reported-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Reviewed-by: Harry Yoo <harry.yoo@oracle.com> Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
2025-03-03sock: add sock_kmemdup helperGeliang Tang
This patch adds the sock version of kmemdup() helper, named sock_kmemdup(), to duplicate the input "src" memory block using the socket's option memory buffer. Signed-off-by: Geliang Tang <tanggeliang@kylinos.cn> Reviewed-by: Kuniyuki Iwashima <kuniyu@amazon.com> Acked-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Link: https://patch.msgid.link/f828077394c7d1f3560123497348b438c875b510.1740735165.git.tanggeliang@kylinos.cn Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-03-03tcp: convert to dev_net_rcu()Eric Dumazet
TCP uses of dev_net() are under RCU protection, change them to dev_net_rcu() to get LOCKDEP support. Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Kuniyuki Iwashima <kuniyu@amazon.com> Link: https://patch.msgid.link/20250301201424.2046477-4-edumazet@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-03-03tcp: add four drop reasons to tcp_check_req()Eric Dumazet
Use two existing drop reasons in tcp_check_req(): - TCP_RFC7323_PAWS - TCP_OVERWINDOW Add two new ones: - TCP_RFC7323_TSECR (corresponds to LINUX_MIB_TSECRREJECTED) - TCP_LISTEN_OVERFLOW (when a listener accept queue is full) Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Jason Xing <kerneljasonxing@gmail.com> Reviewed-by: Kuniyuki Iwashima <kuniyu@amazon.com> Link: https://patch.msgid.link/20250301201424.2046477-3-edumazet@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-03-03tcp: add a drop_reason pointer to tcp_check_req()Eric Dumazet
We want to add new drop reasons for packets dropped in 3WHS in the following patches. tcp_rcv_state_process() has to set reason to TCP_FASTOPEN, because tcp_check_req() will conditionally overwrite the drop_reason. Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Jason Xing <kerneljasonxing@gmail.com> Reviewed-by: Kuniyuki Iwashima <kuniyu@amazon.com> Link: https://patch.msgid.link/20250301201424.2046477-2-edumazet@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-03-03ipv4: fib: Namespacify fib_info hash tables.Kuniyuki Iwashima
We will convert RTM_NEWROUTE and RTM_DELROUTE to per-netns RTNL. Then, we need to have per-netns hash tables for struct fib_info. Let's allocate the hash tables per netns. fib_info_hash, fib_info_hash_bits, and fib_info_cnt are now moved to struct netns_ipv4 and accessed with net->ipv4.fib_XXX. Also, the netns checks are removed from fib_find_info_nh() and fib_find_info(). Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Reviewed-by: David Ahern <dsahern@kernel.org> Link: https://patch.msgid.link/20250228042328.96624-9-kuniyu@amazon.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-03-03ipv4: fib: Allocate fib_info_hash[] during netns initialisation.Kuniyuki Iwashima
We will allocate fib_info_hash[] and fib_info_laddrhash[] for each netns. Currently, fib_info_hash[] is allocated when the first route is added. Let's move the first allocation to a new __net_init function. Note that we must call fib4_semantics_exit() in fib_net_exit_batch() because ->exit() is called earlier than ->exit_batch(). Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Reviewed-by: David Ahern <dsahern@kernel.org> Link: https://patch.msgid.link/20250228042328.96624-4-kuniyu@amazon.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-03-03KVM: arm64: nv: Add Maintenance Interrupt emulationMarc Zyngier
Emulating the vGIC means emulating the dreaded Maintenance Interrupt. This is a two-pronged problem: - while running L2, getting an MI translates into an MI injected in the L1 based on the state of the HW. - while running L1, we must accurately reflect the state of the MI line, based on the in-memory state. The MI INTID is added to the distributor, as expected on any virtualisation-capable implementation, and further patches will allow its configuration. Signed-off-by: Marc Zyngier <maz@kernel.org> Link: https://lore.kernel.org/r/20250225172930.1850838-11-maz@kernel.org Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
2025-03-03KVM: arm64: nv: Nested GICv3 emulationMarc Zyngier
When entering a nested VM, we set up the hypervisor control interface based on what the guest hypervisor has set. Especially, we investigate each list register written by the guest hypervisor whether HW bit is set. If so, we translate hw irq number from the guest's point of view to the real hardware irq number if there is a mapping. Co-developed-by: Jintack Lim <jintack@cs.columbia.edu> Signed-off-by: Jintack Lim <jintack@cs.columbia.edu> [Christoffer: Redesigned execution flow around vcpu load/put] Co-developed-by: Christoffer Dall <christoffer.dall@arm.com> Signed-off-by: Christoffer Dall <christoffer.dall@arm.com> [maz: Rewritten to support GICv3 instead of GICv2, NV2 support] Signed-off-by: Marc Zyngier <maz@kernel.org> Link: https://lore.kernel.org/r/20250225172930.1850838-9-maz@kernel.org Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
2025-03-03KVM: arm64: nv: Plumb handling of GICv3 EL2 accessesMarc Zyngier
Wire the handling of all GICv3 EL2 registers, and provide emulation for all the non memory-backed registers (ICC_SRE_EL2, ICH_VTR_EL2, ICH_MISR_EL2, ICH_ELRSR_EL2, and ICH_EISR_EL2). Signed-off-by: Marc Zyngier <maz@kernel.org> Link: https://lore.kernel.org/r/20250225172930.1850838-7-maz@kernel.org Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
2025-03-03Merge tag 'v6.14-rc5' into x86/core, to pick up fixesIngo Molnar
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2025-03-03perf/dwc_pcie: Move common DWC struct definitions to 'pcie-dwc.h'Manivannan Sadhasivam
Move the common DWC struct definitions, which are shared across all the DesginWare PCIe IPs, to a new header file called 'pcie-dwc.h', so that other users e.g., debugfs, perf and sysfs can make use of them. Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Signed-off-by: Shradha Todi <shradha.t@samsung.com> Reviewed-by: Shuai Xue <xueshuai@linux.alibaba.com> Reviewed-by: Fan Ni <fan.ni@samsung.com> Tested-by: Hrishikesh Deleep <hrishikesh.d@samsung.com> Link: https://lore.kernel.org/r/20250221131548.59616-2-shradha.t@samsung.com [kwilczynski: commit log, tidy up the new header file] Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
2025-03-03elf, uapi: Add types ElfXX_Verdef and ElfXX_VerauxThomas Weißschuh
The types are used by tools/testing/selftests/vDSO/parse_vdso.c. To be able to build the vDSO selftests without a libc dependency, add the types to the kernels own UAPI headers. Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Kees Cook <kees@kernel.org> Reviewed-by: Vincenzo Frascino <vincenzo.frascino@arm.com> Acked-by: Shuah Khan <skhan@linuxfoundation.org> Link: https://refspecs.linuxfoundation.org/LSB_5.0.0/LSB-Core-generic/LSB-Core-generic/symversion.html#VERDEFEXTS Link: https://lore.kernel.org/all/20250226-parse_vdso-nolibc-v2-6-28e14e031ed8@linutronix.de
generated by cgit (git 2.34.1) at 2025-09-15 02:29:22 +0000