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| author | Paul E. McKenney | 2017-08-11 21:37:07 +0200 |
|---|---|---|
| committer | Paul E. McKenney | 2017-10-09 23:24:14 +0200 |
| commit | c63eb17ff06dbcf73e771b9b425c531cc0a9c17b (patch) | |
| tree | 3a985b57593a3ce64503837b9b55ae99e03483ad /kernel/irq_work.c | |
| parent | rcu: Fix up pending cbs check in rcu_prepare_for_idle (diff) | |
| download | kernel-qcow2-linux-c63eb17ff06dbcf73e771b9b425c531cc0a9c17b.tar.gz kernel-qcow2-linux-c63eb17ff06dbcf73e771b9b425c531cc0a9c17b.tar.xz kernel-qcow2-linux-c63eb17ff06dbcf73e771b9b425c531cc0a9c17b.zip | |
rcu: Create call_rcu_tasks() kthread at boot time
Currently the call_rcu_tasks() kthread is created upon first
invocation of call_rcu_tasks(). This has the advantage of avoiding
creation if there are never any invocations of call_rcu_tasks() and of
synchronize_rcu_tasks(), but it requires an unreliable heuristic to
determine when it is safe to create the kthread. For example, it is
not safe to create the kthread when call_rcu_tasks() is invoked with
a spinlock held, but there is no good way to detect this in !PREEMPT
kernels.
This commit therefore creates this kthread unconditionally at
core_initcall() time. If you don't want this kthread created, then
build with CONFIG_TASKS_RCU=n.
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Diffstat (limited to 'kernel/irq_work.c')
0 files changed, 0 insertions, 0 deletions