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| author | Paul E. McKenney <paulmck@kernel.org> | 2020-05-01 16:49:48 -0700 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@kernel.org> | 2020-06-29 11:58:49 -0700 |
| commit | e816d56fad57ba9817cef6606b12f5e14647c3bf (patch) | |
| tree | 246c1262e13082eb2356f31fc092cdf06a6f84c8 /kernel/rcu/tree.c | |
| parent | abfce0414814149f716e1d30da1fb3140d1b3473 (diff) | |
| download | lwn-e816d56fad57ba9817cef6606b12f5e14647c3bf.tar.gz lwn-e816d56fad57ba9817cef6606b12f5e14647c3bf.zip | |
rcu: Add callbacks-invoked counters
This commit adds a count of the callbacks invoked to the per-CPU rcu_data
structure. This count is printed by the show_rcu_gp_kthreads() that
is invoked by rcutorture and the RCU CPU stall-warning code. It is also
intended for use by drgn.
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Diffstat (limited to 'kernel/rcu/tree.c')
| -rw-r--r-- | kernel/rcu/tree.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c index bef1dc91bfbe..874c831bcc45 100644 --- a/kernel/rcu/tree.c +++ b/kernel/rcu/tree.c @@ -2443,6 +2443,7 @@ static void rcu_do_batch(struct rcu_data *rdp) local_irq_save(flags); rcu_nocb_lock(rdp); count = -rcl.len; + rdp->n_cbs_invoked += count; trace_rcu_batch_end(rcu_state.name, count, !!rcl.head, need_resched(), is_idle_task(current), rcu_is_callbacks_kthread()); |