summaryrefslogtreecommitdiff
path: root/include/linux/rcutiny.h
diff options
context:
space:
mode:
authorPaul E. McKenney <paulmck@kernel.org>2019-08-03 01:12:47 +0300
committerPaul E. McKenney <paulmck@kernel.org>2019-10-05 20:46:05 +0300
commit96926686deab853bcacf887501f4ed958e38666b (patch)
tree197e4fb14f6edaa8fae310e415f4d981905457b1 /include/linux/rcutiny.h
parent366237e7b0833faa2d8da7a8d7d7da8c3ca802e5 (diff)
downloadlinux-96926686deab853bcacf887501f4ed958e38666b.tar.xz
rcu: Make CPU-hotplug removal operations enable tick
CPU-hotplug removal operations run the multi_cpu_stop() function, which relies on the scheduler to gain control from whatever is running on the various online CPUs, including any nohz_full CPUs running long loops in kernel-mode code. Lack of the scheduler-clock interrupt on such CPUs can delay multi_cpu_stop() for several minutes and can also result in RCU CPU stall warnings. This commit therefore causes CPU-hotplug removal operations to enable the scheduler-clock interrupt on all online CPUs. [ paulmck: Apply Joel Fernandes TICK_DEP_MASK_RCU->TICK_DEP_BIT_RCU fix. ] [ paulmck: Apply simplifications suggested by Frederic Weisbecker. ] Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Diffstat (limited to 'include/linux/rcutiny.h')
0 files changed, 0 insertions, 0 deletions