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Lazy call_rcu() updates for v6.2#24

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Commits on Aug 31, 2022

• tools/memory-model: Document locking corner cases

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• tools/memory-model: Make judgelitmus.sh note timeouts

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• tools/memory-model: Make cmplitmushist.sh note timeouts

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• tools/memory-model: Make judgelitmus.sh identify bad macros

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• tools/memory-model: Make judgelitmus.sh detect hard deadlocks

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• tools/memory-model: Fix paulmck email address on pre-existing scripts

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• tools/memory-model: Update parseargs.sh for hardware verification

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• tools/memory-model: Make judgelitmus.sh handle hardware verifications

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• tools/memory-model: Add simpletest.sh to check locking, RCU, and SRCU

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• tools/memory-model: Fix checkalllitmus.sh comment

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• tools/memory-model: Hardware checking for check{,all}litmus.sh

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• tools/memory-model: Make judgelitmus.sh ransack .litmus.out files

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• tools/memory-model: Split runlitmus.sh out of checklitmus.sh

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• tools/memory-model: Make runlitmus.sh generate .litmus.out for --hw

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• tools/memory-model: Move from .AArch64.litmus.out to .litmus.AArch.out

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• tools/memory-model: Keep assembly-language litmus tests

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• tools/memory-model: Allow herd to deduce CPU type

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• tools/memory-model: Make runlitmus.sh check for jingle errors

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• tools/memory-model: Add -v flag to jingle7 runs

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• tools/memory-model: Implement --hw support for checkghlitmus.sh

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• tools/memory-model: Fix scripting --jobs argument

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• tools/memory-model: Make checkghlitmus.sh use mselect7

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• tools/memory-model: Make history-check scripts use mselect7

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• tools/memory-model: Add "--" to parseargs.sh for additional arguments

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• tools/memory-model: Repair parseargs.sh header comment

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• tools/memory-model: Add checktheselitmus.sh to run specified litmus tests

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• tools/memory-model: Add data-race capabilities to judgelitmus.sh

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• tools/memory-model: Make judgelitmus.sh handle scripted Result: tag

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• tools/memory-model: Use "-unroll 0" to keep --hw runs finite

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Commits on Sep 1, 2022

• Merge branch 'nolibc.2022.08.31b' into HEAD

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• Merge branch 'lkmm.2022.08.31b' into HEAD

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Commits on Oct 3, 2022

• srcu: Convert ->srcu_lock_count and ->srcu_unlock_count to atomic

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• srcu: Create an srcu_read_lock_nmisafe() and srcu_read_unlock_nmisafe()

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• srcu: Check for consistent per-CPU per-srcu_struct NMI safety

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• srcu: Check for consistent global per-srcu_struct NMI safety

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• arch/x86: Add ARCH_HAS_NMI_SAFE_THIS_CPU_OPS Kconfig option

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• arch/arm64: Add ARCH_HAS_NMI_SAFE_THIS_CPU_OPS Kconfig option

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• arch/loongarch: Add ARCH_HAS_NMI_SAFE_THIS_CPU_OPS Kconfig option

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• arch/s390: Add ARCH_HAS_NMI_SAFE_THIS_CPU_OPS Kconfig option

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• Merge branch 'srcunmisafe.2022.10.03a' into HEAD

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• Merge branch 'lkmm-dev.2022.08.31b' into HEAD

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• memory-model: Prohibit nested SRCU read-side critical sections

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• rcutorture: Verify NUM_ACTIVE_RCU_POLL_FULL_OLDSTATE

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• rcutorture: Verify NUM_ACTIVE_RCU_POLL_OLDSTATE

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• rcutorture: Add --bootargs parameter to kvm-again.sh

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• torture: Use mktemp instead of guessing at unique names

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• rcutorture: Make kvm-test-1-run-qemu.sh check for alternative output

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• rcutorture: Make kvm-recheck.sh export TORTURE_SUITE

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• rcutorture: Add --datestamp parameter to kvm-again.sh

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• rcutorture: Avoid redundant builds for rcuscale and refscale in torture.sh

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• rcutorture: Avoid torture.sh compressing identical files

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• rcu: Remove duplicate RCU exp QS report from rcu_report_dead()

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• tools/memory-model: Weaken ctrl dependency definition in explanation.txt

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• torture: Make torture.sh create a properly formated log file

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• rcu: Synchronize ->qsmaskinitnext in rcu_boost_kthread_setaffinity()

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• doc: Remove arrayRCU.rst

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• doc: Update checklist.txt

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• doc: Update listRCU.rst

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• kcsan: Instrument memcpy/memset/memmove with newer Clang

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• objtool, kcsan: Add volatile read/write instrumentation to whitelist

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• rcu: Simplify rcu_init_nohz() cpumask handling

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• rcu: Remove unused 'cpu' in rcu_virt_note_context_switch()

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• rcu: Use READ_ONCE() for lockless read of rnp->qsmask

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• rcu: Fix late wakeup when flush of bypass cblist happens (v6)

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• rcu: Let non-offloaded idle CPUs with callbacks defer tick

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• slab: Explain why SLAB_DESTROY_BY_RCU reference before locking

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• rcu: Remove rcu_is_idle_cpu()

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• rcu-tasks: Make grace-period-age message human-readable

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Commits on Oct 5, 2022

• clocksource: Reject bogus watchdog clocksource measurements

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Commits on Oct 9, 2022

• docs/memory-barriers.txt: Add a missed closing parenthesis

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Commits on Oct 13, 2022

• docs/memory-barriers.txt/kokr: introduce io_stop_wc() and add implementation for ARM64

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• docs/memory-barriers.txt/kokr: Add memory barrier dma_mb()

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• docs/memory-barriers.txt/kokr: Fix confusing name of 'data dependency barrier'

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• rcu: Fix __this_cpu_read() lockdep warning in rcu_force_quiescent_state()

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• rcu-tasks: Provide rcu_trace_implies_rcu_gp()

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Commits on Oct 14, 2022

• srcu: Warn when NMI-unsafe API is used in NMI

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• srcu: Explain the reason behind the read side critical section on GP start

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• srcu: Debug NMI safety even on archs that don't require it

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Commits on Oct 16, 2022

• adding/updating ci files

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• rcu: Fix missing nocb gp wake on rcu_barrier()

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• rcu: Make call_rcu() lazy to save power

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• rcu: Refactor code a bit in rcu_nocb_do_flush_bypass()

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• rcu: Shrinker for lazy rcu

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• rcuscale: Add laziness and kfree tests

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• percpu-refcount: Use call_rcu_flush() for atomic switch

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• rcu/sync: Use call_rcu_flush() instead of call_rcu

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• rcu/rcuscale: Use call_rcu_flush() for async reader test

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• rcu/rcutorture: Use call_rcu_flush() where needed

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• scsi/scsi_error: Use call_rcu_flush() instead of call_rcu()

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• workqueue: Make queue_rcu_work() use call_rcu_flush()

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• rxrpc: Use call_rcu_flush() instead of call_rcu()

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