Paul E. McKenney dd5d19bafd rcu: Create rcutree plugins to handle hotplug CPU for multi-level trees ...

When offlining CPUs from a multi-level tree, there is the
possibility of offlining the last CPU from a given node when
there are preempted RCU read-side critical sections that
started life on one of the CPUs on that node.

In this case, the corresponding tasks will be enqueued via the
task_struct's rcu_node_entry list_head onto one of the
rcu_node's blocked_tasks[] lists.  These tasks need to be moved
somewhere else so that they will prevent the current grace
period from ending. That somewhere is the root rcu_node.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: laijs@cn.fujitsu.com
Cc: dipankar@in.ibm.com
Cc: akpm@linux-foundation.org
Cc: mathieu.desnoyers@polymtl.ca
Cc: josht@linux.vnet.ibm.com
Cc: dvhltc@us.ibm.com
Cc: niv@us.ibm.com
Cc: peterz@infradead.org
Cc: rostedt@goodmis.org
LKML-Reference: <20090827215816.GA30472@linux.vnet.ibm.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

2009-08-29 15:34:39 +02:00

..

gcov

gcov: enable GCOV_PROFILE_ALL for x86_64

2009-06-18 13:03:58 -07:00

irq

genirq: prevent wakeup of freed irq thread

2009-08-13 23:09:27 +02:00

power

headers: smp_lock.h redux

2009-07-12 12:22:34 -07:00

time

clocksource: Prevent NULL pointer dereference

2009-07-19 17:15:54 +02:00

trace

Remove double removal of blktrace directory

2009-08-12 18:50:08 +02:00

.gitignore

…

acct.c

bsdacct: fix access to invalid filp in acct_on()

2009-06-30 18:56:00 -07:00

async.c

async: Fix lack of boot-time console due to insufficient synchronization

2009-06-08 12:31:53 -07:00

audit_tree.c

Fix rule eviction order for AUDIT_DIR

2009-06-24 00:02:38 -04:00

audit_watch.c

Audit: clean up all op= output to include string quoting

2009-06-24 00:00:52 -04:00

audit.c

Fix rule eviction order for AUDIT_DIR

2009-06-24 00:02:38 -04:00

audit.h

Fix rule eviction order for AUDIT_DIR

2009-06-24 00:02:38 -04:00

auditfilter.c

Audit: clean up all op= output to include string quoting

2009-06-24 00:00:52 -04:00

auditsc.c

Fix rule eviction order for AUDIT_DIR

2009-06-24 00:02:38 -04:00

backtracetest.c

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bounds.c

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capability.c

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cgroup_debug.c

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cgroup_freezer.c

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cgroup.c

cgroup avoid permanent sleep at rmdir

2009-07-29 19:10:35 -07:00

compat.c

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configs.c

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cpu.c

mm/init: cpu_hotplug_init() must be initialized before SLAB

2009-06-22 21:18:12 -07:00

cpuset.c

cpuset,mm: update tasks' mems_allowed in time

2009-06-16 19:47:31 -07:00

cred-internals.h

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cred.c

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delayacct.c

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dma-coherent.c

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dma.c

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exec_domain.c

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exit.c

rcu: Merge preemptable-RCU functionality into hierarchical RCU

2009-08-23 10:32:40 +02:00

extable.c

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fork.c

rcu: Merge preemptable-RCU functionality into hierarchical RCU

2009-08-23 10:32:40 +02:00

freezer.c

sched: fix nr_uninterruptible accounting of frozen tasks really

2009-07-18 14:19:53 +02:00

futex_compat.c

futex: Fix compat_futex to be same as futex for REQUEUE_PI

2009-08-10 15:41:12 +02:00

futex.c

futex: Fix handling of bad requeue syscall pairing

2009-08-10 20:38:11 +02:00

groups.c

groups: move code to kernel/groups.c

2009-06-16 19:47:48 -07:00

hrtimer.c

hrtimer: Fix migration expiry check

2009-07-10 17:32:55 +02:00

hung_task.c

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itimer.c

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kallsyms.c

kernel/kallsyms.c: replace deprecated __initcall with device_initcall and fix whitespace

2009-06-09 22:37:52 +02:00

Kconfig.freezer

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Kconfig.hz

…

Kconfig.preempt

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kexec.c

kexec: fix omitting offset in extended crashkernel syntax

2009-07-29 19:10:34 -07:00

kfifo.c

kernel/kfifo.c: replace conditional test with is_power_of_2()

2009-06-16 19:47:47 -07:00

kgdb.c

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kmod.c

headers: mnt_namespace.h redux

2009-07-08 09:31:56 -07:00

kprobes.c

kprobes: Use kernel_text_address() for checking probe address

2009-07-30 16:44:06 -07:00

ksysfs.c

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kthread.c

update the comment in kthread_stop()

2009-07-27 12:15:46 -07:00

latencytop.c

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lockdep_internals.h

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lockdep_proc.c

lockdep: Fix file mode of lock_stat

2009-08-07 11:58:38 +02:00

lockdep_states.h

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lockdep.c

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Makefile

rcu: Remove CONFIG_PREEMPT_RCU

2009-08-23 10:32:40 +02:00

marker.c

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module.c

module: use MODULE_SYMBOL_PREFIX with module_layout

2009-07-27 12:15:45 -07:00

mutex-debug.c

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mutex-debug.h

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mutex.c

Merge branch 'linus' into perfcounters/core

2009-06-11 17:55:42 +02:00

mutex.h

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notifier.c

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ns_cgroup.c

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nsproxy.c

nsproxy: extract create_nsproxy()

2009-06-18 13:03:56 -07:00

panic.c

trace: stop tracer in oops_enter()

2009-07-24 15:30:45 -04:00

params.c

module_param: allow 'bool' module_params to be bool, not just int.

2009-06-12 21:46:58 +09:30

perf_counter.c

perf_counter: Report the cloning task as parent on perf_counter_fork()

2009-08-13 16:17:15 +02:00

pid_namespace.c

pidns: rewrite copy_pid_ns()

2009-06-18 13:03:55 -07:00

pid.c

kmemleak: Remove alloc_bootmem annotations introduced in the past

2009-07-09 17:07:02 +01:00

pm_qos_params.c

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posix-cpu-timers.c

posix_cpu_timers_exit_group(): Do not use thread_group_cputimer()

2009-08-08 18:30:25 +02:00

posix-timers.c

posix-timers: Fix oops in clock_nanosleep() with CLOCK_MONOTONIC_RAW

2009-08-04 10:16:41 +02:00

printk.c

printk: Add KERN_DEFAULT printk log-level

2009-06-16 11:02:28 -07:00

profile.c

profile: suppress warning about large allocations when profile=1 is specified

2009-07-29 19:10:36 -07:00

ptrace.c

cred_guard_mutex: do not return -EINTR to user-space

2009-07-06 13:57:04 -07:00

rcupdate.c

rcu: Delay rcu_barrier() wait until beginning of next CPU-hotunplug operation.

2009-08-19 13:58:54 +02:00

rcutorture.c

rcu: Add synchronize_sched_expedited() torture tests

2009-07-03 10:02:29 +02:00

rcutree_plugin.h

rcu: Create rcutree plugins to handle hotplug CPU for multi-level trees

2009-08-29 15:34:39 +02:00

rcutree_trace.c

rcu: Merge preemptable-RCU functionality into hierarchical RCU

2009-08-23 10:32:40 +02:00

rcutree.c

rcu: Create rcutree plugins to handle hotplug CPU for multi-level trees

2009-08-29 15:34:39 +02:00

rcutree.h

rcu: Merge preemptable-RCU functionality into hierarchical RCU

2009-08-23 10:32:40 +02:00

relay.c

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res_counter.c

memcg: add interface to reset limits

2009-06-18 13:03:48 -07:00

resource.c

kernel/resource.c: fix sign extension in reserve_setup()

2009-06-30 18:56:00 -07:00

rtmutex_common.h

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rtmutex-debug.c

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rtmutex-debug.h

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rtmutex-tester.c

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rtmutex.c

rtmutex: Avoid deadlock in rt_mutex_start_proxy_lock()

2009-08-06 05:50:21 +02:00

rtmutex.h

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rwsem.c

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sched_clock.c

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sched_cpupri.c

sched: Fix race in cpupri introduced by cpumask_var changes

2009-08-02 14:23:29 +02:00

sched_cpupri.h

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sched_debug.c

sched: Hide runqueues from direct refer at source code level

2009-06-17 18:29:42 +02:00

sched_fair.c

sched: Fix latencytop and sleep profiling vs group scheduling

2009-08-02 14:10:12 +02:00

sched_features.h

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sched_idletask.c

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sched_rt.c

sched_rt: Fix overload bug on rt group scheduling

2009-07-10 10:43:29 +02:00

sched_stats.h

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sched.c

rcu: Renamings to increase RCU clarity

2009-08-23 10:32:37 +02:00

seccomp.c

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semaphore.c

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signal.c

do_sigaltstack: small cleanups

2009-08-01 11:18:56 -07:00

slow-work.c

slow-work: use round_jiffies() for thread pool's cull and OOM timers

2009-06-16 19:47:49 -07:00

smp.c

generic-ipi: fix hotplug_cfd()

2009-08-07 10:39:55 -07:00

softirq.c

rcu: Renamings to increase RCU clarity

2009-08-23 10:32:37 +02:00

softlockup.c

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spinlock.c

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srcu.c

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stacktrace.c

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stop_machine.c

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sys_ni.c

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sys.c

groups: move code to kernel/groups.c

2009-06-16 19:47:48 -07:00

sysctl_check.c

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sysctl.c

Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

2009-06-28 11:05:28 -07:00

taskstats.c

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test_kprobes.c

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time.c

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timeconst.pl

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timer.c

rcu: Simplify rcu_pending()/rcu_check_callbacks() API

2009-08-23 10:32:39 +02:00

tracepoint.c

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tsacct.c

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uid16.c

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up.c

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user_namespace.c

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user.c

sched: delayed cleanup of user_struct

2009-06-15 21:30:23 -07:00

utsname_sysctl.c

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utsname.c

utsns: extract creeate_uts_ns()

2009-06-18 13:03:55 -07:00

wait.c

locking, sched: Give waitqueue spinlocks their own lockdep classes

2009-08-10 14:43:09 +02:00

workqueue.c

ftrace, workqueuetrace: make workqueue tracepoints use TRACE_EVENT macro

2009-06-02 01:10:40 +02:00