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Message-ID: <20150327090643.GA31812@gmail.com> Date: Fri, 27 Mar 2015 10:06:43 +0100 From: Ingo Molnar <mingo@...nel.org> To: "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com> Cc: laijs@...fujitsu.com, yaodongdong@...wei.com, agordeev@...hat.com, linux-kernel@...r.kernel.org Subject: Re: [GIT PULL rcu/next] RCU commits for 4.1 * Paul E. McKenney <paulmck@...ux.vnet.ibm.com> wrote: > Hello, Ingo, > > The changes in this series include the following, but please see the > note on set 5: > > 1. Documentation updates. These were posted to LKML at > https://lkml.org/lkml/2015/3/3/493. > > 2. Changes permitting use of call_rcu() and friends very early in > boot, for example, before rcu_init() is invoked. These were > posted to LKML at https://lkml.org/lkml/2015/3/3/510. > > 3. Miscellaneous fixes. These were posted to LKML at > https://lkml.org/lkml/2015/3/3/538. > > 4. In-kernel API to enable and disable expediting of normal RCU > grace periods. These were posted to LKML at > https://lkml.org/lkml/2015/3/3/557. > > 5. Improve RCU's handling of outgoing CPUs. These were posted to > LKML at https://lkml.org/lkml/2015/3/3/578. > > Note: ARM support is lagging a bit. This might require that > this particular set of commits be deferred. I am currently > optimistic, but please let me know if you would like to handle > these some other way. > > 6. NO_HZ_FULL_SYSIDLE fixes. These were posted to LKML at > https://lkml.org/lkml/2015/3/3/607. > > 7. Tiny RCU updates to make it more tiny. These were posted to LKML > at https://lkml.org/lkml/2015/3/3/618. > > These changes (based on v4.0-rc1) 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 42528795ac1c8d7ba021797ec004904168956d64: > > Merge branches 'doc.2015.02.26a', 'earlycb.2015.03.03a', 'fixes.2015.03.03a', 'gpexp.2015.02.26a', 'hotplug.2015.03.20a', 'sysidle.2015.02.26b' and 'tiny.2015.02.26a' into HEAD (2015-03-20 08:31:01 -0700) > > ---------------------------------------------------------------- > > Alexander Gordeev (2): > rcu: Remove unnecessary condition check in rcu_qsctr_help() > rcu: Remove fastpath from __rcu_process_callbacks() > > Lai Jiangshan (1): > rcu_tree: Avoid touching rnp->completed when a new GP is started > > Paul E. McKenney (53): > rcu: Consolidate rcu_synchronize and wakeme_after_rcu() > documentation: Update rcutree.kthread_prio for grace-period kthread use > documentation: Update based on on-demand vmstat workers > documentation: Update NO_HZ_FULL interaction with POSIX timers > documentation: Update per-CPU kthreads documentation > documentation: Clarify memory-barrier semantics of atomic operations > documentation: Clarify control-dependency pairing > rcu: Abstract default callback-list initialization from init_callback_list() > rcu: Wire ->rda pointers at compile time > rcu: Prevent early-boot RCU callbacks from splatting > rcu: Refine diagnostics for lacking kthread for no-CBs callbacks > rcu: Avoid clobbering early boot callbacks > rcu: Fix a couple of typos in rcu_all_qs() comment header > rcu: Drive PROVE_RCU directly off of PROVE_LOCKING > rcu: Provide rcu_expedite_gp() and rcu_unexpedite_gp() > rcu: Add rcu_expedite_gp() and rcu_unexpedite_gp() to rcutorture > rcu: Update from rcu_expedited variable to rcu_gp_is_expedited() > rcu: Add Kconfig option to expedite grace periods during boot > rcutorture: Make consistent use of variables > rcu: Fixes to NO_HZ_FULL sysidle accounting > rcu: Tighten up affinity and check for sysidle > rcu: Move early-boot callbacks to no-CBs lists for no-CBs CPUs > rcu: Move early boot callback tests earlier > rcu: Use IS_ENABLED() to CONFIG_RCU_FANOUT_EXACT #ifdef > rcu: Improve diagnostics for blocked critical sections in irq > rcu: Use IS_ENABLED() to simplify rcu_bootup_announce_oddness() > rcu: Add boot-up check for non-default CONFIG_RCU_FANOUT_LEAF values > rcu: Reverse rcu_dereference_check() conditions > torture: Avoid script syntax error when insufficient CPUs > rcu: Get rcu_sched_force_quiescent_state() where it belongs > smpboot: Add common code for notification from dying CPU > x86: Use common outgoing-CPU-notification code > blackfin: Use common outgoing-CPU-notification code > metag: Use common outgoing-CPU-notification code > rcu: Consolidate offline-CPU callback initialization > rcu: Put all orphan-callback-related code under same comment > rcu: Simplify sync_rcu_preempt_exp_init() > rcu: Eliminate empty HOTPLUG_CPU ifdef > rcu: Detect stalls caused by failure to propagate up rcu_node tree > rcu: Provide diagnostic option to slow down grace-period initialization > rcutorture: Enable slow grace-period initializations > rcu: Remove event tracing from rcu_cpu_notify(), used by offline CPUs > rcu: Rework preemptible expedited bitmask handling > rcu: Move rcu_report_unblock_qs_rnp() to common code > rcu: Process offlining and onlining only at grace-period start > rcu: Eliminate ->onoff_mutex from rcu_node structure > cpu: Make CPU-offline idle-loop transition point more precise > rcu: Handle outgoing CPUs on exit from idle loop > rcutorture: Default to grace-period-initialization delays > rcu: Add diagnostics to grace-period cleanup > rcu: Yet another fix for preemption and CPU hotplug > rcu: Associate quiescent-state reports with grace period > Merge branches 'doc.2015.02.26a', 'earlycb.2015.03.03a', 'fixes.2015.03.03a', 'gpexp.2015.02.26a', 'hotplug.2015.03.20a', 'sysidle.2015.02.26b' and 'tiny.2015.02.26a' into HEAD > > Yao Dongdong (1): > rcu: Remove redundant check of cpu_online() > > Documentation/atomic_ops.txt | 45 +-- > Documentation/kernel-parameters.txt | 20 +- > Documentation/kernel-per-CPU-kthreads.txt | 34 +- > Documentation/memory-barriers.txt | 42 +- > Documentation/timers/NO_HZ.txt | 10 +- > arch/blackfin/mach-common/smp.c | 6 +- > arch/metag/kernel/smp.c | 5 +- > arch/x86/include/asm/cpu.h | 2 - > arch/x86/include/asm/smp.h | 2 +- > arch/x86/kernel/smpboot.c | 39 +- > arch/x86/xen/smp.c | 46 ++- > include/linux/cpu.h | 14 + > include/linux/lockdep.h | 7 +- > include/linux/rcupdate.h | 40 +- > include/linux/srcu.h | 2 +- > init/Kconfig | 13 + > kernel/cpu.c | 4 +- > kernel/rcu/rcutorture.c | 27 +- > kernel/rcu/srcu.c | 19 +- > kernel/rcu/tiny.c | 14 +- > kernel/rcu/tree.c | 437 +++++++++++++++------ > kernel/rcu/tree.h | 11 +- > kernel/rcu/tree_plugin.h | 267 +++++++------ > kernel/rcu/tree_trace.c | 4 +- > kernel/rcu/update.c | 72 +++- > kernel/sched/idle.c | 9 +- > kernel/smpboot.c | 156 ++++++++ > lib/Kconfig.debug | 35 +- > tools/testing/selftests/rcutorture/bin/kvm.sh | 2 +- > .../selftests/rcutorture/configs/rcu/CFcommon | 1 + > 30 files changed, 948 insertions(+), 437 deletions(-) Pulled into tip:core/rcu, thanks a lot Paul! Ingo -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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