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| author | Paul E. McKenney <paulmck@kernel.org> | 2023-06-02 14:38:44 -0700 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@kernel.org> | 2023-07-14 15:01:49 -0700 |
| commit | 271a8467a5f7ab7654f06541d2483b5340bb7192 (patch) | |
| tree | 4566a21b09f59c3c118eade74aa0d5e1aed843a8 /kernel/rcu/rcuscale.c | |
| parent | 1d702e2eff8be1f39a1774f8a0f66f077b663b27 (diff) | |
rcuscale: Measure RCU Tasks Trace grace-period kthread CPU time
This commit causes RCU Tasks Trace to output the CPU time consumed by
its grace-period kthread. The CPU time is whatever is in the designated
task's current->stime field, and thus is controlled by whatever CPU-time
accounting scheme is in effect.
This output appears in microseconds as follows on the console:
rcu_scale: Grace-period kthread CPU time: 42367.037
[ paulmck: Apply Willy Tarreau feedback. ]
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Diffstat (limited to 'kernel/rcu/rcuscale.c')
| -rw-r--r-- | kernel/rcu/rcuscale.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/rcu/rcuscale.c b/kernel/rcu/rcuscale.c index 7fba3ab66e35..35e06c86acc9 100644 --- a/kernel/rcu/rcuscale.c +++ b/kernel/rcu/rcuscale.c @@ -298,6 +298,7 @@ static struct rcu_scale_ops tasks_ops = { .gp_barrier = rcu_barrier_tasks, .sync = synchronize_rcu_tasks, .exp_sync = synchronize_rcu_tasks, + .rso_gp_kthread = get_rcu_tasks_gp_kthread, .name = "tasks" }; |