Mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/ https://git.shady.money/linux/atom?h=v5.4 2019-11-04T23:48:26Z 2019-11-04T23:48:26Z Yi Wang wang.yi59@zte.com.cn 2019-10-19T09:07:27Z urn:sha1:0ed9ca25894ef673d0259e4bd312d5fa1b9a6591 A recent commit changed a parameter of __irq_domain_alloc_fwnode(), but did not update the documentation comment. Fix it up. Fixes: b977fcf477c1 ("irqdomain/debugfs: Use PAs to generate fwnode names") Signed-off-by: Yi Wang <wang.yi59@zte.com.cn> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lkml.kernel.org/r/1571476047-29463-1-git-send-email-wang.yi59@zte.com.cn 2019-09-18T02:15:14Z Linus Torvalds torvalds@linux-foundation.org 2019-09-18T02:15:14Z urn:sha1:77dcfe2b9edc98286cf18e03c243c9b999f955d9 Pull power management updates from Rafael Wysocki: "These include a rework of the main suspend-to-idle code flow (related to the handling of spurious wakeups), a switch over of several users of cpufreq notifiers to QoS-based limits, a new devfreq driver for Tegra20, a new cpuidle driver and governor for virtualized guests, an extension of the wakeup sources framework to expose wakeup sources as device objects in sysfs, and more. Specifics: - Rework the main suspend-to-idle control flow to avoid repeating "noirq" device resume and suspend operations in case of spurious wakeups from the ACPI EC and decouple the ACPI EC wakeups support from the LPS0 _DSM support (Rafael Wysocki). - Extend the wakeup sources framework to expose wakeup sources as device objects in sysfs (Tri Vo, Stephen Boyd). - Expose system suspend statistics in sysfs (Kalesh Singh). - Introduce a new haltpoll cpuidle driver and a new matching governor for virtualized guests wanting to do guest-side polling in the idle loop (Marcelo Tosatti, Joao Martins, Wanpeng Li, Stephen Rothwell). - Fix the menu and teo cpuidle governors to allow the scheduler tick to be stopped if PM QoS is used to limit the CPU idle state exit latency in some cases (Rafael Wysocki). - Increase the resolution of the play_idle() argument to microseconds for more fine-grained injection of CPU idle cycles (Daniel Lezcano). - Switch over some users of cpuidle notifiers to the new QoS-based frequency limits and drop the CPUFREQ_ADJUST and CPUFREQ_NOTIFY policy notifier events (Viresh Kumar). - Add new cpufreq driver based on nvmem for sun50i (Yangtao Li). - Add support for MT8183 and MT8516 to the mediatek cpufreq driver (Andrew-sh.Cheng, Fabien Parent). - Add i.MX8MN support to the imx-cpufreq-dt cpufreq driver (Anson Huang). - Add qcs404 to cpufreq-dt-platdev blacklist (Jorge Ramirez-Ortiz). - Update the qcom cpufreq driver (among other things, to make it easier to extend and to use kryo cpufreq for other nvmem-based SoCs) and add qcs404 support to it (Niklas Cassel, Douglas RAILLARD, Sibi Sankar, Sricharan R). - Fix assorted issues and make assorted minor improvements in the cpufreq code (Colin Ian King, Douglas RAILLARD, Florian Fainelli, Gustavo Silva, Hariprasad Kelam). - Add new devfreq driver for NVidia Tegra20 (Dmitry Osipenko, Arnd Bergmann). - Add new Exynos PPMU events to devfreq events and extend that mechanism (Lukasz Luba). - Fix and clean up the exynos-bus devfreq driver (Kamil Konieczny). - Improve devfreq documentation and governor code, fix spelling typos in devfreq (Ezequiel Garcia, Krzysztof Kozlowski, Leonard Crestez, MyungJoo Ham, Gaël PORTAY). - Add regulators enable and disable to the OPP (operating performance points) framework (Kamil Konieczny). - Update the OPP framework to support multiple opp-suspend properties (Anson Huang). - Fix assorted issues and make assorted minor improvements in the OPP code (Niklas Cassel, Viresh Kumar, Yue Hu). - Clean up the generic power domains (genpd) framework (Ulf Hansson). - Clean up assorted pieces of power management code and documentation (Akinobu Mita, Amit Kucheria, Chuhong Yuan). - Update the pm-graph tool to version 5.5 including multiple fixes and improvements (Todd Brandt). - Update the cpupower utility (Benjamin Weis, Geert Uytterhoeven, Sébastien Szymanski)" * tag 'pm-5.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (126 commits) cpuidle-haltpoll: Enable kvm guest polling when dedicated physical CPUs are available cpuidle-haltpoll: do not set an owner to allow modunload cpuidle-haltpoll: return -ENODEV on modinit failure cpuidle-haltpoll: set haltpoll as preferred governor cpuidle: allow governor switch on cpuidle_register_driver() PM: runtime: Documentation: add runtime_status ABI document pm-graph: make setVal unbuffered again for python2 and python3 powercap: idle_inject: Use higher resolution for idle injection cpuidle: play_idle: Increase the resolution to usec cpuidle-haltpoll: vcpu hotplug support cpufreq: Add qcs404 to cpufreq-dt-platdev blacklist cpufreq: qcom: Add support for qcs404 on nvmem driver cpufreq: qcom: Refactor the driver to make it easier to extend cpufreq: qcom: Re-organise kryo cpufreq to use it for other nvmem based qcom socs dt-bindings: opp: Add qcom-opp bindings with properties needed for CPR dt-bindings: opp: qcom-nvmem: Support pstates provided by a power domain Documentation: cpufreq: Update policy notifier documentation cpufreq: Remove CPUFREQ_ADJUST and CPUFREQ_NOTIFY policy notifier events PM / Domains: Verify PM domain type in dev_pm_genpd_set_performance_state() PM / Domains: Simplify genpd_lookup_dev() ... 2019-09-17T18:42:15Z Linus Torvalds torvalds@linux-foundation.org 2019-09-17T18:42:15Z urn:sha1:a572ba63298d04e2c5178e2abd82d6bd6e5677e7 Pull core irq updates from Thomas Gleixner: "Updates from the irq departement: - Update the interrupt spreading code so it handles numa node with different CPU counts properly. - A large overhaul of the ARM GiCv3 driver to support new PPI and SPI ranges. - Conversion of all alloc_fwnode() users to use physical addresses instead of virtual addresses so the virtual addresses are not leaked. The physical address is sufficient to identify the associated interrupt chip. - Add support for Marvel MMP3, Amlogic Meson SM1 interrupt chips. - Enforce interrupt threading at compile time if RT is enabled. - Small updates and improvements all over the place" * 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (37 commits) irqchip/gic-v3-its: Fix LPI release for Multi-MSI devices irqchip/uniphier-aidet: Use devm_platform_ioremap_resource() irqdomain: Add the missing assignment of domain->fwnode for named fwnode irqchip/mmp: Coexist with GIC root IRQ controller irqchip/mmp: Mask off interrupts from other cores irqchip/mmp: Add missing chained_irq_{enter,exit}() irqchip/mmp: Do not use of_address_to_resource() to get mux regs irqchip/meson-gpio: Add support for meson sm1 SoCs dt-bindings: interrupt-controller: New binding for the meson sm1 SoCs genirq/affinity: Remove const qualifier from node_to_cpumask argument genirq/affinity: Spread vectors on node according to nr_cpu ratio genirq/affinity: Improve __irq_build_affinity_masks() irqchip: Remove dev_err() usage after platform_get_irq() irqchip: Add include guard to irq-partition-percpu.h irqchip/mmp: Do not call irq_set_default_host() on DT platforms irqchip/gic-v3-its: Remove the redundant set_bit for lpi_map irqchip/gic-v3: Add quirks for HIP06/07 invalid GICD_TYPER erratum 161010803 irqchip/gic: Skip DT quirks when evaluating IIDR-based quirks irqchip/gic-v3: Warn about inconsistent implementations of extended ranges irqchip/gic-v3: Add EPPI range support ... 2019-09-17T07:36:34Z Rafael J. Wysocki rafael.j.wysocki@intel.com 2019-09-17T07:36:34Z urn:sha1:d2817063697747a8c9dcb971b2eb8f07fc153e5a * pm-sleep: (29 commits) ACPI: PM: s2idle: Always set up EC GPE for system wakeup ACPI: PM: s2idle: Avoid rearming SCI for wakeup unnecessarily PM / wakeup: Unexport wakeup_source_sysfs_{add,remove}() PM / wakeup: Register wakeup class kobj after device is added PM / wakeup: Fix sysfs registration error path PM / wakeup: Show wakeup sources stats in sysfs PM / wakeup: Use wakeup_source_register() in wakelock.c PM / wakeup: Drop wakeup_source_init(), wakeup_source_prepare() PM: sleep: Replace strncmp() with str_has_prefix() PM: suspend: Fix platform_suspend_prepare_noirq() intel-hid: Disable button array during suspend-to-idle intel-hid: intel-vbtn: Avoid leaking wakeup_mode set ACPI: PM: s2idle: Execute LPS0 _DSM functions with suspended devices ACPI: EC: PM: Make acpi_ec_dispatch_gpe() print debug message ACPI: EC: PM: Consolidate some code depending on PM_SLEEP ACPI: PM: s2idle: Eliminate acpi_sleep_no_ec_events() ACPI: PM: s2idle: Switch EC over to polling during "noirq" suspend ACPI: PM: s2idle: Add acpi.sleep_no_lps0 module parameter ACPI: PM: s2idle: Rearrange lps0_device_attach() PM/sleep: Expose suspend stats in sysfs ... 2019-09-17T00:25:49Z Linus Torvalds torvalds@linux-foundation.org 2019-09-17T00:25:49Z urn:sha1:7e67a859997aad47727aff9c5a32e160da079ce3 Pull scheduler updates from Ingo Molnar: - MAINTAINERS: Add Mark Rutland as perf submaintainer, Juri Lelli and Vincent Guittot as scheduler submaintainers. Add Dietmar Eggemann, Steven Rostedt, Ben Segall and Mel Gorman as scheduler reviewers. As perf and the scheduler is getting bigger and more complex, document the status quo of current responsibilities and interests, and spread the review pain^H^H^H^H fun via an increase in the Cc: linecount generated by scripts/get_maintainer.pl. :-) - Add another series of patches that brings the -rt (PREEMPT_RT) tree closer to mainline: split the monolithic CONFIG_PREEMPT dependencies into a new CONFIG_PREEMPTION category that will allow the eventual introduction of CONFIG_PREEMPT_RT. Still a few more hundred patches to go though. - Extend the CPU cgroup controller with uclamp.min and uclamp.max to allow the finer shaping of CPU bandwidth usage. - Micro-optimize energy-aware wake-ups from O(CPUS^2) to O(CPUS). - Improve the behavior of high CPU count, high thread count applications running under cpu.cfs_quota_us constraints. - Improve balancing with SCHED_IDLE (SCHED_BATCH) tasks present. - Improve CPU isolation housekeeping CPU allocation NUMA locality. - Fix deadline scheduler bandwidth calculations and logic when cpusets rebuilds the topology, or when it gets deadline-throttled while it's being offlined. - Convert the cpuset_mutex to percpu_rwsem, to allow it to be used from setscheduler() system calls without creating global serialization. Add new synchronization between cpuset topology-changing events and the deadline acceptance tests in setscheduler(), which were broken before. - Rework the active_mm state machine to be less confusing and more optimal. - Rework (simplify) the pick_next_task() slowpath. - Improve load-balancing on AMD EPYC systems. - ... and misc cleanups, smaller fixes and improvements - please see the Git log for more details. * 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (53 commits) sched/psi: Correct overly pessimistic size calculation sched/fair: Speed-up energy-aware wake-ups sched/uclamp: Always use 'enum uclamp_id' for clamp_id values sched/uclamp: Update CPU's refcount on TG's clamp changes sched/uclamp: Use TG's clamps to restrict TASK's clamps sched/uclamp: Propagate system defaults to the root group sched/uclamp: Propagate parent clamps sched/uclamp: Extend CPU's cgroup controller sched/topology: Improve load balancing on AMD EPYC systems arch, ia64: Make NUMA select SMP sched, perf: MAINTAINERS update, add submaintainers and reviewers sched/fair: Use rq_lock/unlock in online_fair_sched_group cpufreq: schedutil: fix equation in comment sched: Rework pick_next_task() slow-path sched: Allow put_prev_task() to drop rq->lock sched/fair: Expose newidle_balance() sched: Add task_struct pointer to sched_class::set_curr_task sched: Rework CPU hotplug task selection sched/{rt,deadline}: Fix set_next_task vs pick_next_task sched: Fix kerneldoc comment for ia64_set_curr_task ... 2019-09-16T22:32:01Z Linus Torvalds torvalds@linux-foundation.org 2019-09-16T22:32:01Z urn:sha1:76f0f227cffb570bc5ce343b1750f14907371d80 Pull ia64 updates from Tony Luck: "The big change here is removal of support for SGI Altix" * tag 'please-pull-ia64_for_5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux: (33 commits) genirq: remove the is_affinity_mask_valid hook ia64: remove CONFIG_SWIOTLB ifdefs ia64: remove support for machvecs ia64: move the screen_info setup to common code ia64: move the ROOT_DEV setup to common code ia64: rework iommu probing ia64: remove the unused sn_coherency_id symbol ia64: remove the SGI UV simulator support ia64: remove the zx1 swiotlb machvec ia64: remove CONFIG_ACPI ifdefs ia64: remove CONFIG_PCI ifdefs ia64: remove the hpsim platform ia64: remove now unused machvec indirections ia64: remove support for the SGI SN2 platform drivers: remove the SGI SN2 IOC4 base support drivers: remove the SGI SN2 IOC3 base support qla2xxx: remove SGI SN2 support qla1280: remove SGI SN2 support misc/sgi-xp: remove SGI SN2 support char/mspec: remove SGI SN2 support ... 2019-09-06T11:03:39Z Thomas Gleixner tglx@linutronix.de 2019-09-06T11:03:39Z urn:sha1:9cc5b7fba57919a7d96f89ce79ba99d1dd1af965 Pull irqchip updates for Linux 5.4 from Marc Zyngier: - Large GICv3 updates to support new PPI and SPI ranges - Conver all alloc_fwnode() users to use PAs instead of VAs - Add support for Marvell's MMP3 irqchip - Add support for Amlogic Meson SM1 - Various cleanups and fixes 2019-09-05T19:31:14Z Yunfeng Ye yeyunfeng@huawei.com 2019-09-04T12:46:25Z urn:sha1:eddf3e9c7c7e4d0707c68d1bb22cc6ec8aef7d4a The following crash was observed: Unable to handle kernel NULL pointer dereference at 0000000000000158 Internal error: Oops: 96000004 [#1] SMP pc : resend_irqs+0x68/0xb0 lr : resend_irqs+0x64/0xb0 ... Call trace: resend_irqs+0x68/0xb0 tasklet_action_common.isra.6+0x84/0x138 tasklet_action+0x2c/0x38 __do_softirq+0x120/0x324 run_ksoftirqd+0x44/0x60 smpboot_thread_fn+0x1ac/0x1e8 kthread+0x134/0x138 ret_from_fork+0x10/0x18 The reason for this is that the interrupt resend mechanism happens in soft interrupt context, which is a asynchronous mechanism versus other operations on interrupts. free_irq() does not take resend handling into account. Thus, the irq descriptor might be already freed before the resend tasklet is executed. resend_irqs() does not check the return value of the interrupt descriptor lookup and derefences the return value unconditionally. 1): __setup_irq irq_startup check_irq_resend // activate softirq to handle resend irq 2): irq_domain_free_irqs irq_free_descs free_desc call_rcu(&desc->rcu, delayed_free_desc) 3): __do_softirq tasklet_action resend_irqs desc = irq_to_desc(irq) desc->handle_irq(desc) // desc is NULL --> Ooops Fix this by adding a NULL pointer check in resend_irqs() before derefencing the irq descriptor. Fixes: a4633adcdbc1 ("[PATCH] genirq: add genirq sw IRQ-retrigger") Signed-off-by: Yunfeng Ye <yeyunfeng@huawei.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Zhiqiang Liu <liuzhiqiang26@huawei.com> Cc: stable@vger.kernel.org Link: https://lkml.kernel.org/r/1630ae13-5c8e-901e-de09-e740b6a426a7@huawei.com 2019-09-03T08:16:50Z Dexuan Cui decui@microsoft.com 2019-09-02T23:14:56Z urn:sha1:711419e504ebd68c8f03656616829c8ad7829389 Recently device pass-through stops working for Linux VM running on Hyper-V. git-bisect shows the regression is caused by the recent commit 467a3bb97432 ("PCI: hv: Allocate a named fwnode ..."), but the root cause is that the commit d59f6617eef0 forgets to set the domain->fwnode for IRQCHIP_FWNODE_NAMED*, and as a result: 1. The domain->fwnode remains to be NULL. 2. irq_find_matching_fwspec() returns NULL since "h->fwnode == fwnode" is false, and pci_set_bus_msi_domain() sets the Hyper-V PCI root bus's msi_domain to NULL. 3. When the device is added onto the root bus, the device's dev->msi_domain is set to NULL in pci_set_msi_domain(). 4. When a device driver tries to enable MSI-X, pci_msi_setup_msi_irqs() calls arch_setup_msi_irqs(), which uses the native MSI chip (i.e. arch/x86/kernel/apic/msi.c: pci_msi_controller) to set up the irqs, but actually pci_msi_setup_msi_irqs() is supposed to call msi_domain_alloc_irqs() with the hbus->irq_domain, which is created in hv_pcie_init_irq_domain() and is associated with the Hyper-V chip hv_msi_irq_chip. Consequently, the irq line is not properly set up, and the device driver can not receive any interrupt. Fixes: d59f6617eef0 ("genirq: Allow fwnode to carry name information only") Fixes: 467a3bb97432 ("PCI: hv: Allocate a named fwnode instead of an address-based one") Reported-by: Lili Deng <v-lide@microsoft.com> Signed-off-by: Dexuan Cui <decui@microsoft.com> Signed-off-by: Marc Zyngier <maz@kernel.org> Link: https://lore.kernel.org/r/PU1P153MB01694D9AF625AC335C600C5FBFBE0@PU1P153MB0169.APCP153.PROD.OUTLOOK.COM 2019-08-28T10:20:43Z Ming Lei ming.lei@redhat.com 2019-08-28T08:58:15Z urn:sha1:101f85b56d03b36418bbf867f67d81710839b0ec When CONFIG_CPUMASK_OFFSTACK isn't enabled, 'cpumask_var_t' is as 'typedef struct cpumask cpumask_var_t[1]', so the argument 'node_to_cpumask' alloc_nodes_vectors() can't be declared as 'const cpumask_var_t *' Fixes the following warning: kernel/irq/affinity.c: In function '__irq_build_affinity_masks': alloc_nodes_vectors(numvecs, node_to_cpumask, cpu_mask, ^ kernel/irq/affinity.c:128:13: note: expected 'const struct cpumask (*)[1]' but argument is of type 'struct cpumask (*)[1]' static void alloc_nodes_vectors(unsigned int numvecs, ^ Fixes: b1a5a73e64e9 ("genirq/affinity: Spread vectors on node according to nr_cpu ratio") Reported-by: kbuild test robot <lkp@intel.com> Signed-off-by: Ming Lei <ming.lei@redhat.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lkml.kernel.org/r/20190828085815.19931-1-ming.lei@redhat.com