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| author | Paul E. McKenney <[email protected]> | 2018-11-26 19:12:39 +0000 |
|---|---|---|
| committer | Paul E. McKenney <[email protected]> | 2019-01-25 23:35:23 +0000 |
| commit | 5a0874c1d16bf91b3bb0c8e07de688836f30a5af (patch) | |
| tree | 5f54c72e4551dd20e481fefa02abe6f047602520 /tools/perf/scripts/python/event_analyzing_sample.py | |
| parent | rcu: Rename rcu_process_callbacks() to rcu_core() for Tree RCU (diff) | |
| download | kernel-5a0874c1d16bf91b3bb0c8e07de688836f30a5af.tar.gz kernel-5a0874c1d16bf91b3bb0c8e07de688836f30a5af.zip | |
rcu: Remove preemption disabling from expedited CPU selection
It turns out that it is queue_delayed_work_on() rather than
queue_work_on() that has difficulties when used concurrently with
CPU-hotplug removal operations. It is therefore unnecessary to protect
CPU identification and queue_work_on() with preempt_disable().
This commit therefore removes the preempt_disable() and preempt_enable()
from sync_rcu_exp_select_cpus(), which has the further benefit of reducing
the number of changes that must be maintained in the -rt patchset.
Reported-by: Thomas Gleixner <[email protected]>
Reported-by: Sebastian Siewior <[email protected]>
Suggested-by: Boqun Feng <[email protected]>
Signed-off-by: Paul E. McKenney <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/event_analyzing_sample.py')
0 files changed, 0 insertions, 0 deletions