* Tue Aug 31 2021 Juri Lelli <juri.lelli@redhat.com> [5.14-1.rt15.1]
- d91cb238e4f8 rebase
- redhat: Use kernel changelog as starting base for kernel-rt (Juri Lelli)
- redhat: Change gating configuration for RT kernel (Juri Lelli)
- config: disable KASAN for kernel-rt-debug kernels (Luis Claudio R. Goncalves) [1977862]
- redhat: Add realtime-setup dependecy for kernel-rt metapackage (Juri Lelli) [1937013]
- spec: Generate separate kernel-rt-kvm packages (Juri Lelli)
- Add RT config options (Juri Lelli)
- specfile: Add with_realtime (Juri Lelli)
- RTize build scripts (Juri Lelli)
- Add localversion for -RT release (Thomas Gleixner)
- POWERPC: Allow to enable RT (Sebastian Andrzej Siewior)
- powerpc/stackprotector: work around stack-guard init from atomic (Sebastian Andrzej Siewior)
- powerpc/kvm: Disable in-kernel MPIC emulation for PREEMPT_RT (Bogdan Purcareata)
- powerpc/pseries/iommu: Use a locallock instead local_irq_save() (Sebastian Andrzej Siewior)
- powerpc: traps: Use PREEMPT_RT (Sebastian Andrzej Siewior)
- ARM64: Allow to enable RT (Sebastian Andrzej Siewior)
- ARM: Allow to enable RT (Sebastian Andrzej Siewior)
- arm64/sve: Make kernel FPU protection RT friendly (Sebastian Andrzej Siewior)
- arm64/sve: Delay freeing memory in fpsimd_flush_thread() (Sebastian Andrzej Siewior)
- KVM: arm/arm64: downgrade preempt_disable()d region to migrate_disable() (Josh Cartwright)
- ARM: enable irq in translation/section permission fault handlers (Yadi.hu)
- arch/arm64: Add lazy preempt support (Anders Roxell)
- powerpc: Add support for lazy preemption (Thomas Gleixner)
- arm: Add support for lazy preemption (Thomas Gleixner)
- entry: Fix the preempt lazy fallout (Thomas Gleixner)
- x86: Support for lazy preemption (Thomas Gleixner)
- x86/entry: Use should_resched() in idtentry_exit_cond_resched() (Sebastian Andrzej Siewior)
- sched: Add support for lazy preemption (Thomas Gleixner)
- x86: Enable RT also on 32bit (Sebastian Andrzej Siewior)
- x86: Allow to enable RT (Sebastian Andrzej Siewior)
- x86: kvm Require const tsc for RT (Thomas Gleixner)
- signal/x86: Delay calling signals in atomic (Oleg Nesterov)
- sysfs: Add /sys/kernel/realtime entry (Clark Williams)
- tpm_tis: fix stall after iowrite*()s (Haris Okanovic)
- tty/serial/pl011: Make the locking work on RT (Thomas Gleixner)
- tty/serial/omap: Make the locking RT aware (Thomas Gleixner)
- drm/i915/gt: Only disable interrupts for the timeline lock on !force-threaded (Sebastian Andrzej Siewior)
- drm/i915: skip DRM_I915_LOW_LEVEL_TRACEPOINTS with NOTRACE (Sebastian Andrzej Siewior)
- drm/i915: disable tracing on -RT (Sebastian Andrzej Siewior)
- drm/i915: Don't disable interrupts on PREEMPT_RT during atomic updates (Mike Galbraith)
- drm,radeon,i915: Use preempt_disable/enable_rt() where recommended (Mike Galbraith)
- random: Make it work on rt (Thomas Gleixner)
- x86: stackprotector: Avoid random pool on rt (Thomas Gleixner)
- panic: skip get_random_bytes for RT_FULL in init_oops_id (Thomas Gleixner)
- crypto: testmgr - Only disable migration in crypto_disable_simd_for_test() (Sebastian Andrzej Siewior)
- crypto: cryptd - add a lock instead preempt_disable/local_bh_disable (Sebastian Andrzej Siewior)
- crypto: limit more FPU-enabled sections (Sebastian Andrzej Siewior)
- scsi/fcoe: Make RT aware. (Thomas Gleixner)
- md: raid5: Make raid5_percpu handling RT aware (Thomas Gleixner)
- drivers/block/zram: Replace bit spinlocks with rtmutex for -rt (Mike Galbraith)
- block/mq: do not invoke preempt_disable() (Sebastian Andrzej Siewior)
- net: Remove preemption disabling in netif_rx() (Priyanka Jain)
- net: dev: always take qdisc's busylock in __dev_xmit_skb() (Sebastian Andrzej Siewior)
- net: Dequeue in dev_cpu_dead() without the lock (Sebastian Andrzej Siewior)
- net: Use skbufhead with raw lock (Thomas Gleixner)
- sunrpc: Make svc_xprt_do_enqueue() use get_cpu_light() (Mike Galbraith)
- net/core: use local_bh_disable() in netif_rx_ni() (Sebastian Andrzej Siewior)
- net: Properly annotate the try-lock for the seqlock (Sebastian Andrzej Siewior)
- net/Qdisc: use a seqlock instead seqcount (Sebastian Andrzej Siewior)
- rcutorture: Avoid problematic critical section nesting on PREEMPT_RT (From: Scott Wood)
- rcu: Delay RCU-selftests (Sebastian Andrzej Siewior)
- fs: namespace: Use cpu_chill() in trylock loops (Thomas Gleixner)
- rt: Introduce cpu_chill() (Thomas Gleixner)
- fs/dcache: disable preemption on i_dir_seq's write side (Sebastian Andrzej Siewior)
- fs/dcache: use swait_queue instead of waitqueue (Sebastian Andrzej Siewior)
- ptrace: fix ptrace vs tasklist_lock race (Sebastian Andrzej Siewior)
- signal: Revert ptrace preempt magic (Thomas Gleixner)
- mm/memcontrol: Disable on PREEMPT_RT (Thomas Gleixner)
- mm/scatterlist: Do not disable irqs on RT (Thomas Gleixner)
- mm/vmalloc: Another preempt disable region which sucks (Thomas Gleixner)
- mm/zsmalloc: copy with get_cpu_var() and locking (Mike Galbraith)
- u64_stats: Disable preemption on 32bit-UP/SMP with RT during updates (Sebastian Andrzej Siewior)
- mm/vmstat: Protect per cpu variables with preempt disable on RT (Ingo Molnar)
- mm: page_alloc: Use migrate_disable() in drain_local_pages_wq() (Sebastian Andrzej Siewior)
- irqwork: push most work into softirq context (Sebastian Andrzej Siewior)
- softirq: Disable softirq stacks for RT (Thomas Gleixner)
- softirq: Check preemption after reenabling interrupts (Thomas Gleixner)
- cpuset: Convert callback_lock to raw_spinlock_t (Mike Galbraith)
- sched: Disable TTWU_QUEUE on RT (Thomas Gleixner)
- sched: Do not account rcu_preempt_depth on RT in might_sleep() (Thomas Gleixner)
- kernel/sched: move stack + kprobe clean up to __put_task_struct() (Sebastian Andrzej Siewior)
- sched: Move mmdrop to RCU on RT (Thomas Gleixner)
- sched: Limit the number of task migrations per batch (Thomas Gleixner)
- kernel/sched: add {put|get}_cpu_light() (Sebastian Andrzej Siewior)
- preempt: Provide preempt_*_(no)rt variants (Thomas Gleixner)
- locking: Allow to include asm/spinlock_types.h from linux/spinlock_types_raw.h (Sebastian Andrzej Siewior)
- lockdep/selftests: Adapt ww-tests for PREEMPT_RT (Sebastian Andrzej Siewior)
- lockdep/selftests: Skip the softirq related tests on PREEMPT_RT (Sebastian Andrzej Siewior)
- lockdep/selftests: Unbalanced migrate_disable() & rcu_read_lock() (Sebastian Andrzej Siewior)
- lockdep/selftests: Add rtmutex to the last column (Sebastian Andrzej Siewior)
- lockdep: Make it RT aware (Thomas Gleixner)
- rtmutex: Add rt_mutex_lock_nest_lock() and rt_mutex_lock_killable(). (Sebastian Andrzej Siewior)
- rtmutex: Add a special case for ww-mutex handling. (Sebastian Andrzej Siewior)
- sched: Trigger warning if ->migration_disabled counter underflows. (Sebastian Andrzej Siewior)
- lockdep/selftests: Avoid using local_lock_{acquire|release}(). (Sebastian Andrzej Siewior)
- locking/rtmutex: Prevent spurious EDEADLK return caused by ww_mutexes (Peter Zijlstra)
- locking/rtmutex: Return success on deadlock for ww_mutex waiters (Peter Zijlstra)
- locking/rtmutex: Dequeue waiter on ww_mutex deadlock (Thomas Gleixner)
- locking/rtmutex: Dont dereference waiter lockless (Thomas Gleixner)
- locking/ww_mutex: Initialize waiter.ww_ctx properly (Sebastian Andrzej Siewior)
- locking/local_lock: Add PREEMPT_RT support (Thomas Gleixner)
- locking/spinlock/rt: Prepare for RT local_lock (Thomas Gleixner)
- locking/rtmutex: Add adaptive spinwait mechanism (Steven Rostedt)
- locking/rtmutex: Implement equal priority lock stealing (Gregory Haskins)
- preempt: Adjust PREEMPT_LOCK_OFFSET for RT (Thomas Gleixner)
- locking/rtmutex: Prevent lockdep false positive with PI futexes (Thomas Gleixner)
- futex: Prevent requeue_pi() lock nesting issue on RT (Thomas Gleixner)
- futex: Simplify handle_early_requeue_pi_wakeup() (Thomas Gleixner)
- futex: Reorder sanity checks in futex_requeue() (Thomas Gleixner)
- futex: Clarify comment in futex_requeue() (Thomas Gleixner)
- futex: Restructure futex_requeue() (Thomas Gleixner)
- futex: Correct the number of requeued waiters for PI (Thomas Gleixner)
- futex: Remove bogus condition for requeue PI (Thomas Gleixner)
- futex: Clarify futex_requeue() PI handling (Thomas Gleixner)
- futex: Clean up stale comments (Thomas Gleixner)
- futex: Validate waiter correctly in futex_proxy_trylock_atomic() (Thomas Gleixner)
- lib/test_lockup: Adapt to changed variables (Sebastian Andrzej Siewior)
- locking/rtmutex: Add mutex variant for RT (Thomas Gleixner)
- locking/ww_mutex: Implement rtmutex based ww_mutex API functions (Peter Zijlstra)
- locking/rtmutex: Extend the rtmutex core to support ww_mutex (Peter Zijlstra)
- locking/ww_mutex: Add rt_mutex based lock type and accessors (Peter Zijlstra)
- locking/ww_mutex: Add RT priority to W/W order (Peter Zijlstra)
- locking/ww_mutex: Implement rt_mutex accessors (Peter Zijlstra)
- locking/ww_mutex: Abstract out internal lock accesses (Thomas Gleixner)
- locking/ww_mutex: Abstract out mutex types (Peter Zijlstra)
- locking/ww_mutex: Abstract out mutex accessors (Peter Zijlstra)
- locking/ww_mutex: Abstract out waiter enqueueing (Peter Zijlstra)
- locking/ww_mutex: Abstract out the waiter iteration (Peter Zijlstra)
- locking/ww_mutex: Remove the __sched annotation from ww_mutex APIs (Peter Zijlstra)
- locking/ww_mutex: Split out the W/W implementation logic into kernel/locking/ww_mutex.h (Peter Zijlstra (Intel))
- locking/ww_mutex: Split up ww_mutex_unlock() (Peter Zijlstra (Intel))
- locking/ww_mutex: Gather mutex_waiter initialization (Peter Zijlstra)
- locking/ww_mutex: Simplify lockdep annotations (Peter Zijlstra)
- locking/mutex: Make mutex::wait_lock raw (Thomas Gleixner)
- locking/ww_mutex: Move the ww_mutex definitions from <linux/mutex.h> into <linux/ww_mutex.h> (Thomas Gleixner)
- locking/mutex: Move the 'struct mutex_waiter' definition from <linux/mutex.h> to the internal header (Thomas Gleixner)
- locking/mutex: Consolidate core headers, remove kernel/locking/mutex-debug.h (Thomas Gleixner)
- locking/rtmutex: Squash !RT tasks to DEFAULT_PRIO (Peter Zijlstra)
- locking/rwlock: Provide RT variant (Thomas Gleixner)
- locking/spinlock: Provide RT variant (Thomas Gleixner)
- locking/rtmutex: Provide the spin/rwlock core lock function (Thomas Gleixner)
- locking/spinlock: Provide RT variant header: <linux/spinlock_rt.h> (Thomas Gleixner)
- locking/spinlock: Provide RT specific spinlock_t (Thomas Gleixner)
- locking/rtmutex: Reduce <linux/rtmutex.h> header dependencies, only include <linux/rbtree_types.h> (Sebastian Andrzej Siewior)
- rbtree: Split out the rbtree type definitions into <linux/rbtree_types.h> (Sebastian Andrzej Siewior)
- locking/lockdep: Reduce header dependencies in <linux/debug_locks.h> (Sebastian Andrzej Siewior)
- locking/rtmutex: Prevent future include recursion hell (Sebastian Andrzej Siewior)
- locking/spinlock: Split the lock types header, and move the raw types into <linux/spinlock_types_raw.h> (Thomas Gleixner)
- locking/rtmutex: Guard regular sleeping locks specific functions (Thomas Gleixner)
- locking/rtmutex: Prepare RT rt_mutex_wake_q for RT locks (Thomas Gleixner)
- locking/rtmutex: Use rt_mutex_wake_q_head (Thomas Gleixner)
- locking/rtmutex: Provide rt_wake_q_head and helpers (Thomas Gleixner)
- locking/rtmutex: Add wake_state to rt_mutex_waiter (Thomas Gleixner)
- locking/rwsem: Add rtmutex based R/W semaphore implementation (Thomas Gleixner)
- locking/rt: Add base code for RT rw_semaphore and rwlock (Thomas Gleixner)
- locking/rtmutex: Provide rt_mutex_base_is_locked() (Thomas Gleixner)
- locking/rtmutex: Provide rt_mutex_slowlock_locked() (Thomas Gleixner)
- locking/rtmutex: Split out the inner parts of 'struct rtmutex' (Peter Zijlstra)
- locking/rtmutex: Split API from implementation (Thomas Gleixner)
- locking/rtmutex: Switch to from cmpxchg_*() to try_cmpxchg_*() (Thomas Gleixner)
- locking/rtmutex: Convert macros to inlines (Sebastian Andrzej Siewior)
- locking/rtmutex: Remove rt_mutex_is_locked() (Peter Zijlstra)
- media/atomisp: Use lockdep instead of *mutex_is_locked() (Peter Zijlstra)
- sched/wake_q: Provide WAKE_Q_HEAD_INITIALIZER() (Thomas Gleixner)
- sched/core: Provide a scheduling point for RT locks (Thomas Gleixner)
- sched/core: Rework the __schedule() preempt argument (Thomas Gleixner)
- sched/wakeup: Prepare for RT sleeping spin/rwlocks (Thomas Gleixner)
- sched/wakeup: Reorganize the current::__state helpers (Thomas Gleixner)
- sched/wakeup: Introduce the TASK_RTLOCK_WAIT state bit (Thomas Gleixner)
- sched/wakeup: Split out the wakeup ->__state check (Thomas Gleixner)
- locking/rtmutex: Set proper wait context for lockdep (Thomas Gleixner)
- locking/local_lock: Add missing owner initialization (Thomas Gleixner)
- debugobjects: Make RT aware (Thomas Gleixner)
- trace: Add migrate-disabled counter to tracing output (Thomas Gleixner)
- pid.h: include atomic.h (Grygorii Strashko)
- wait.h: include atomic.h (Sebastian Andrzej Siewior)
- efi: Allow efi=runtime (Sebastian Andrzej Siewior)
- efi: Disable runtime services on RT (Sebastian Andrzej Siewior)
- net/core: disable NET_RX_BUSY_POLL on RT (Sebastian Andrzej Siewior)
- sched: Disable CONFIG_RT_GROUP_SCHED on RT (Thomas Gleixner)
- mm: Allow only SLUB on RT (Ingo Molnar)
- kconfig: Disable config options which are not RT compatible (Thomas Gleixner)
- leds: trigger: disable CPU trigger on -RT (Sebastian Andrzej Siewior)
- jump-label: disable if stop_machine() is used (Thomas Gleixner)
- genirq: Disable irqpoll on -rt (Ingo Molnar)
- io-wq: Don't mix raw_spinlock_irq() & spin_lock_irq(). (Sebastian Andrzej Siewior)
- io-wq: remove GFP_ATOMIC allocation off schedule out path (Jens Axboe)
- genirq: update irq_set_irqchip_state documentation (Josh Cartwright)
- smp: Wake ksoftirqd on PREEMPT_RT instead do_softirq(). (Sebastian Andrzej Siewior)
- samples/kfifo: Rename read_lock/write_lock (Sebastian Andrzej Siewior)
- tcp: Remove superfluous BH-disable around listening_hash (Sebastian Andrzej Siewior)
- net: Move lockdep where it belongs (Thomas Gleixner)
- shmem: Use raw_spinlock_t for ->stat_lock (Sebastian Andrzej Siewior)
- mm: workingset: replace IRQ-off check with a lockdep assert. (Sebastian Andrzej Siewior)
- cgroup: use irqsave in cgroup_rstat_flush_locked() (Sebastian Andrzej Siewior)
- genirq: Move prio assignment into the newly created thread (Thomas Gleixner)
- kthread: Move prio/affinite change into the newly created thread (Sebastian Andrzej Siewior)
- sched: Prevent balance_push() on remote runqueues (Thomas Gleixner)
- sched: Switch wait_task_inactive to HRTIMER_MODE_REL_HARD (Sebastian Andrzej Siewior)
- highmem: Don't disable preemption on RT in kmap_atomic() (Sebastian Andrzej Siewior)
- mm, slub: convert kmem_cpu_slab protection to local_lock (Vlastimil Babka)
- mm, slub: use migrate_disable() on PREEMPT_RT (Vlastimil Babka)
- mm, slub: protect put_cpu_partial() with disabled irqs instead of cmpxchg (Vlastimil Babka)
- mm, slub: make slab_lock() disable irqs with PREEMPT_RT (Vlastimil Babka)
- mm, slub: optionally save/restore irqs in slab_[un]lock()/ (Vlastimil Babka)
- mm: slub: Make object_map_lock a raw_spinlock_t (Sebastian Andrzej Siewior)
- mm: slub: Move flush_cpu_slab() invocations __free_slab() invocations out of IRQ context (Sebastian Andrzej Siewior)
- mm, slab: make flush_slab() possible to call with irqs enabled (Vlastimil Babka)
- mm, slub: don't disable irqs in slub_cpu_dead() (Vlastimil Babka)
- mm, slub: only disable irq with spin_lock in __unfreeze_partials() (Vlastimil Babka)
- mm, slub: separate detaching of partial list in unfreeze_partials() from unfreezing (Vlastimil Babka)
- mm, slub: detach whole partial list at once in unfreeze_partials() (Vlastimil Babka)
- mm, slub: discard slabs in unfreeze_partials() without irqs disabled (Vlastimil Babka)
- mm, slub: move irq control into unfreeze_partials() (Vlastimil Babka)
- mm, slub: call deactivate_slab() without disabling irqs (Vlastimil Babka)
- mm, slub: make locking in deactivate_slab() irq-safe (Vlastimil Babka)
- mm, slub: move reset of c->page and freelist out of deactivate_slab() (Vlastimil Babka)
- mm, slub: stop disabling irqs around get_partial() (Vlastimil Babka)
- mm, slub: check new pages with restored irqs (Vlastimil Babka)
- mm, slub: validate slab from partial list or page allocator before making it cpu slab (Vlastimil Babka)
- mm, slub: restore irqs around calling new_slab() (Vlastimil Babka)
- mm, slub: move disabling irqs closer to get_partial() in ___slab_alloc() (Vlastimil Babka)
- mm, slub: do initial checks in ___slab_alloc() with irqs enabled (Vlastimil Babka)
- mm, slub: move disabling/enabling irqs to ___slab_alloc() (Vlastimil Babka)
- mm, slub: simplify kmem_cache_cpu and tid setup (Vlastimil Babka)
- mm, slub: restructure new page checks in ___slab_alloc() (Vlastimil Babka)
- mm, slub: return slab page from get_partial() and set c->page afterwards (Vlastimil Babka)
- mm, slub: dissolve new_slab_objects() into ___slab_alloc() (Vlastimil Babka)
- mm, slub: extract get_partial() from new_slab_objects() (Vlastimil Babka)
- mm, slub: unify cmpxchg_double_slab() and __cmpxchg_double_slab() (Vlastimil Babka)
- mm, slub: remove redundant unfreeze_partials() from put_cpu_partial() (Vlastimil Babka)
- mm, slub: don't disable irq for debug_check_no_locks_freed() (Vlastimil Babka)
- mm, slub: allocate private object map for validate_slab_cache() (Vlastimil Babka)
- mm, slub: allocate private object map for debugfs listings (Vlastimil Babka)
- mm, slub: don't call flush_all() from slab_debug_trace_open() (Vlastimil Babka)
- printk: Enhance the condition check of msleep in pr_flush() (Chao Qin)
- printk: add pr_flush() (John Ogness)
- printk: add console handover (John Ogness)
- printk: remove deferred printing (John Ogness)
- printk: move console printing to kthreads (John Ogness)
- printk: introduce kernel sync mode (John Ogness)
- printk: use seqcount_latch for console_seq (John Ogness)
- printk: call boot_delay_msec() in printk_delay() (John Ogness)
- printk: relocate printk_delay() (John Ogness)
- serial: 8250: implement write_atomic (John Ogness)
- kdb: only use atomic consoles for output mirroring (John Ogness)
- console: add write_atomic interface (John Ogness)
- printk: rename printk cpulock API and always disable interrupts (John Ogness)
- printk: syslog: close window between wait and read (John Ogness)
- printk: convert @syslog_lock to mutex (John Ogness)
- printk: remove NMI tracking (John Ogness)
- printk: remove safe buffers (John Ogness)
- printk: track/limit recursion (John Ogness)
- lib/nmi_backtrace: explicitly serialize banner and regs (John Ogness)
- printk/console: Check consistent sequence number when handling race in console_unlock() (Petr Mladek)
- arm64: mm: Make arch_faults_on_old_pte() check for migratability (Valentin Schneider)
- rcu/nocb: Protect NOCB state via local_lock() under PREEMPT_RT (Valentin Schneider)
- sched: Introduce migratable() (Valentin Schneider)
- eventfd: Make signal recursion protection a task bit (Thomas Gleixner)
- notifier: Remove atomic_notifier_call_chain_robust() (Valentin Schneider)
- cpu_pm: Make notifier chain use a raw_spinlock_t (Valentin Schneider)
Resolves: rhbz#1891873
Luis Claudio R. Goncalves
Juri Lelli