linux-stable/kernel/rcu
Paul E. McKenney c84aad7654 rcu-tasks: Add an RCU-tasks rude variant
This commit adds a "rude" variant of RCU-tasks that has as quiescent
states schedule(), cond_resched_tasks_rcu_qs(), userspace execution,
and (in theory, anyway) cond_resched().  In other words, RCU-tasks rude
readers are regions of code with preemption disabled, but excluding code
early in the CPU-online sequence and late in the CPU-offline sequence.
Updates make use of IPIs and force an IPI and a context switch on each
online CPU.  This variant is useful in some situations in tracing.

Suggested-by: Steven Rostedt <rostedt@goodmis.org>
[ paulmck: Apply EXPORT_SYMBOL_GPL() feedback from Qiujun Huang. ]
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
[ paulmck: Apply review feedback from Steve Rostedt. ]
2020-04-27 11:03:51 -07:00
..
Kconfig rcu-tasks: Add an RCU-tasks rude variant 2020-04-27 11:03:51 -07:00
Kconfig.debug rcu: Add support for consolidated-RCU reader checking 2019-08-09 11:00:35 -07:00
Makefile rcu: Provide debug symbols and line numbers in KCSAN runs 2020-02-20 15:58:21 -08:00
rcu.h Merge branches 'doc.2020.02.27a', 'fixes.2020.03.21a', 'kfree_rcu.2020.02.20a', 'locktorture.2020.02.20a', 'ovld.2020.02.20a', 'rcu-tasks.2020.02.20a', 'srcu.2020.02.20a' and 'torture.2020.02.20a' into HEAD 2020-03-21 17:15:11 -07:00
rcu_segcblist.c rcu: Remove dead code from rcu_segcblist_insert_pend_cbs() 2020-02-20 15:58:23 -08:00
rcu_segcblist.h rcu: Remove kfree_rcu() special casing and lazy-callback handling 2020-01-24 10:24:31 -08:00
rcuperf.c rcuperf: Measure memory footprint during kfree_rcu() test 2020-02-20 16:03:31 -08:00
rcutorture.c rcutorture: Add a test for synchronize_rcu_mult() 2020-04-27 11:03:51 -07:00
srcutiny.c rcu: Use CONFIG_PREEMPTION where appropriate 2019-12-09 12:37:51 -08:00
srcutree.c Merge branches 'doc.2020.02.27a', 'fixes.2020.03.21a', 'kfree_rcu.2020.02.20a', 'locktorture.2020.02.20a', 'ovld.2020.02.20a', 'rcu-tasks.2020.02.20a', 'srcu.2020.02.20a' and 'torture.2020.02.20a' into HEAD 2020-03-21 17:15:11 -07:00
sync.c rcu/sync: Simplify the state machine 2019-05-28 09:05:23 -07:00
tasks.h rcu-tasks: Add an RCU-tasks rude variant 2020-04-27 11:03:51 -07:00
tiny.c rcu: Remove kfree_rcu() special casing and lazy-callback handling 2020-01-24 10:24:31 -08:00
tree.c rcu: Add comments marking transitions between RCU watching and not 2020-04-27 11:03:50 -07:00
tree.h rcu: React to callback overload by aggressively seeking quiescent states 2020-02-20 16:00:20 -08:00
tree_exp.h rcu: Don't use negative nesting depth in __rcu_read_unlock() 2020-04-27 11:03:50 -07:00
tree_plugin.h rcu-tasks: Use context-switch hook for PREEMPT=y kernels 2020-04-27 11:03:50 -07:00
tree_stall.h rcu: Add per-task state to RCU CPU stall warnings 2020-04-27 11:03:50 -07:00
update.c rcu-tasks: Refactor RCU-tasks to allow variants to be added 2020-04-27 11:03:51 -07:00