Hello, Ingo, This pull request contains the following changes: 1. Documentation updates. https://lore.kernel.org/lkml/20191003012741.GA12456@paulmck-ThinkPad-P72 2. Miscellaneous fixes. https://lore.kernel.org/lkml/20191003013243.GA12705@paulmck-ThinkPad-P72 3. Dynamic tick (nohz) updates, perhaps most notably changes to force the tick on when needed due to lengthy in-kernel execution on CPUs on which RCU is waiting. https://lore.kernel.org/lkml/20191003013834.GA12927@paulmck-ThinkPad-P72 4. Replace rcu_swap_protected() with rcu_prepace_pointer(). https://lore.kernel.org/lkml/20191022191136.GA25627@paulmck-ThinkPad-P72 NOTE: Commit 81db81f82993 ("drivers/scsi: Replace rcu_swap_protected() with rcu_replace()") conflicts with the SCSI tree's d188b0675b21 ("scsi: core: Add sysfs attributes for VPD pages 0h and 89h"), as noted by Stephen Rothwell here: https://lore.kernel.org/lkml/20191029150826.38c26ef8@xxxxxxxxxxxxxxxx Stephen's fixup looks good both to me and to Martin Peterson: https://lore.kernel.org/lkml/yq1pnif6ne7.fsf@xxxxxxxxxx 5. Torture-test updates. https://lore.kernel.org/lkml/20191003014710.GA13323@paulmck-ThinkPad-P72 6. Linux-kernel memory consistency model updates. https://lore.kernel.org/lkml/20191003001039.GA8027@paulmck-ThinkPad-P72 All of these have been subjected to the kbuild test robot and -next testing, and are available in the git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git for-mingo for you to fetch changes up to 8e655478739142a2df879907d14977721ab36c9f: Merge branches 'doc.2019.10.29a', 'fixes.2019.10.29a', 'nohz.2019.10.28a', 'replace.2019.10.28a', 'torture.2019.10.05a' and 'lkmm.2019.10.05a' into HEAD (2019-10-29 02:49:25 -0700) These changes decrease the size of the kernel by about 500 lines, mostly due to .rst files being more compact than the original .html files. The net savings would have been greater except for the addition of some much-needed LKMM documentation. ---------------------------------------------------------------- Alan Stern (4): tools/memory-model: Fix data race detection for unordered store and load tools/memory-model/Documentation: Fix typos in explanation.txt tools/memory-model/Documentation: Put redefinition of rcu-fence into explanation.txt tools/memory-model/Documentation: Add plain accesses and data races to explanation.txt Chuhong Yuan (1): locktorture: Replace strncmp() with str_has_prefix() Dan Carpenter (1): rcu: Fix uninitialized variable in nocb_gp_wait() Ethan Hansen (2): rcu: Remove unused function rcutorture_record_progress() rcu: Remove unused variable rcu_perf_writer_state Frederic Weisbecker (1): nohz: Add TICK_DEP_BIT_RCU Joel Fernandes (Google) (8): rcu: Reset CPU hints when reporting a quiescent state Revert docs from "rcu: Restore barrier() to rcu_read_lock() and rcu_read_unlock()" Revert docs from "treewide: Rename rcu_dereference_raw_notrace() to _check()" docs: rcu: Correct links referring to titles docs: rcu: Increase toctree to 3 Restore docs "treewide: Rename rcu_dereference_raw_notrace() to _check()" Restore docs "rcu: Restore barrier() to rcu_read_lock() and rcu_read_unlock()" doc: Update list_for_each_entry_rcu() documentation Mauro Carvalho Chehab (1): docs: rcu: convert some articles from html to ReST Paul E. McKenney (32): rcu: Remove unused function hlist_bl_del_init_rcu() time: Export tick start/stop functions for rcutorture rcu: Force on tick when invoking lots of callbacks rcutorture: Force on tick for readers and callback flooders stop_machine: Provide RCU quiescent state in multi_cpu_stop() rcu: Make CPU-hotplug removal operations enable tick rcutorture: Emulate dyntick aspect of userspace nohz_full sojourn rcutorture: Remove CONFIG_HOTPLUG_CPU=n from scenarios rcutorture: Separate warnings for each failure type rcutorture: Make in-kernel-loop testing more brutal rcu: Upgrade rcu_swap_protected() to rcu_replace() x86/kvm/pmu: Replace rcu_swap_protected() with rcu_replace() drm/i915: Replace rcu_swap_protected() with rcu_replace() drivers/scsi: Replace rcu_swap_protected() with rcu_replace() fs/afs: Replace rcu_swap_protected() with rcu_replace() bpf/cgroup: Replace rcu_swap_protected() with rcu_replace() net/core: Replace rcu_swap_protected() with rcu_replace() net/netfilter: Replace rcu_swap_protected() with rcu_replace() net/sched: Replace rcu_swap_protected() with rcu_replace() security/safesetid: Replace rcu_swap_protected() with rcu_replace() rcu: Force tick on for nohz_full CPUs not reaching quiescent states rcu: Force nohz_full tick on upon irq enter instead of exit rcu: Confine ->core_needs_qs accesses to the corresponding CPU rcu: Make kernel-mode nohz_full CPUs invoke the RCU core processing rcu: Several rcu_segcblist functions can be static workqueue: Convert for_each_wq to use built-in list check rcu: Ensure that ->rcu_urgent_qs is set before resched IPI rcu: Remove obsolete descriptions for rcu_barrier tracepoint rcu: Update descriptions for rcu_nocb_wake tracepoint rcu: Update descriptions for rcu_future_grace_period tracepoint rcu: Suppress levelspread uninitialized messages Merge branches 'doc.2019.10.29a', 'fixes.2019.10.29a', 'nohz.2019.10.28a', 'replace.2019.10.28a', 'torture.2019.10.05a' and 'lkmm.2019.10.05a' into HEAD Sebastian Andrzej Siewior (1): Documentation: Rename rcu_node_context_switch() to rcu_note_context_switch() Wolfgang M. Reimer (1): locking: locktorture: Do not include rwlock.h directly .../Design/Data-Structures/Data-Structures.html | 1391 -------- .../RCU/Design/Data-Structures/Data-Structures.rst | 1163 +++++++ .../Expedited-Grace-Periods.html | 668 ---- .../Expedited-Grace-Periods.rst | 521 +++ .../Design/Memory-Ordering/Tree-RCU-Diagram.html | 9 - .../Memory-Ordering/Tree-RCU-Memory-Ordering.html | 704 ---- .../Memory-Ordering/Tree-RCU-Memory-Ordering.rst | 624 ++++ .../RCU/Design/Memory-Ordering/TreeRCU-gp.svg | 2 +- .../RCU/Design/Memory-Ordering/TreeRCU-qs.svg | 2 +- .../RCU/Design/Requirements/Requirements.html | 3401 -------------------- .../RCU/Design/Requirements/Requirements.rst | 2704 ++++++++++++++++ Documentation/RCU/index.rst | 7 +- Documentation/RCU/lockdep.txt | 18 +- Documentation/RCU/whatisRCU.txt | 14 +- arch/x86/kvm/pmu.c | 4 +- drivers/gpu/drm/i915/gem/i915_gem_context.c | 2 +- drivers/scsi/scsi.c | 4 +- drivers/scsi/scsi_sysfs.c | 8 +- fs/afs/vl_list.c | 4 +- include/linux/rculist_bl.h | 28 - include/linux/rcupdate.h | 18 + include/linux/rcutiny.h | 1 + include/linux/rcutree.h | 1 + include/linux/tick.h | 7 +- include/trace/events/rcu.h | 47 +- include/trace/events/timer.h | 3 +- kernel/bpf/cgroup.c | 4 +- kernel/locking/locktorture.c | 9 +- kernel/rcu/rcu.h | 4 +- kernel/rcu/rcu_segcblist.c | 6 +- kernel/rcu/rcuperf.c | 16 - kernel/rcu/rcutorture.c | 44 +- kernel/rcu/tree.c | 73 +- kernel/rcu/tree.h | 1 + kernel/rcu/tree_plugin.h | 2 +- kernel/stop_machine.c | 1 + kernel/time/tick-sched.c | 11 + kernel/workqueue.c | 10 +- net/core/dev.c | 4 +- net/core/sock_reuseport.c | 4 +- net/netfilter/nf_tables_api.c | 5 +- net/sched/act_api.c | 2 +- net/sched/act_csum.c | 4 +- net/sched/act_ct.c | 3 +- net/sched/act_ctinfo.c | 4 +- net/sched/act_ife.c | 2 +- net/sched/act_mirred.c | 4 +- net/sched/act_mpls.c | 2 +- net/sched/act_police.c | 6 +- net/sched/act_sample.c | 4 +- net/sched/act_skbedit.c | 4 +- net/sched/act_tunnel_key.c | 4 +- net/sched/act_vlan.c | 2 +- security/safesetid/securityfs.c | 4 +- tools/memory-model/Documentation/explanation.txt | 602 +++- tools/memory-model/linux-kernel.cat | 2 +- .../selftests/rcutorture/configs/rcu/TASKS03 | 3 - .../selftests/rcutorture/configs/rcu/TREE02 | 3 - .../selftests/rcutorture/configs/rcu/TREE04 | 3 - .../selftests/rcutorture/configs/rcu/TREE06 | 3 - .../selftests/rcutorture/configs/rcu/TREE08 | 3 - .../selftests/rcutorture/configs/rcu/TREE09 | 3 - .../selftests/rcutorture/configs/rcu/TRIVIAL | 3 - .../selftests/rcutorture/doc/TREE_RCU-kconfig.txt | 1 - 64 files changed, 5830 insertions(+), 6390 deletions(-) delete mode 100644 Documentation/RCU/Design/Data-Structures/Data-Structures.html create mode 100644 Documentation/RCU/Design/Data-Structures/Data-Structures.rst delete mode 100644 Documentation/RCU/Design/Expedited-Grace-Periods/Expedited-Grace-Periods.html create mode 100644 Documentation/RCU/Design/Expedited-Grace-Periods/Expedited-Grace-Periods.rst delete mode 100644 Documentation/RCU/Design/Memory-Ordering/Tree-RCU-Diagram.html delete mode 100644 Documentation/RCU/Design/Memory-Ordering/Tree-RCU-Memory-Ordering.html create mode 100644 Documentation/RCU/Design/Memory-Ordering/Tree-RCU-Memory-Ordering.rst delete mode 100644 Documentation/RCU/Design/Requirements/Requirements.html create mode 100644 Documentation/RCU/Design/Requirements/Requirements.rst
