diff options
| author | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2018-01-31 19:40:22 -0800 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2018-02-20 16:12:28 -0800 |
| commit | 7f5d42d05155523a4c42c2c5170f2a368217aed5 (patch) | |
| tree | 622ba4ed926c9ec62fb2b40a0063db2b0050c7c7 /include/trace | |
| parent | 9a414201ae7ea089699a0cbd36533345ca17233b (diff) | |
rcu: Trace expedited GP delays due to transitioning CPUs
If a CPU is transitioning to or from offline state, an expedited
grace period may undergo a timed wait. This timed wait can unduly
delay grace periods, so this commit adds a trace statement to make
it visible.
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Diffstat (limited to 'include/trace')
| -rw-r--r-- | include/trace/events/rcu.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/trace/events/rcu.h b/include/trace/events/rcu.h index e56a618f2a59..d8c33298c153 100644 --- a/include/trace/events/rcu.h +++ b/include/trace/events/rcu.h @@ -181,6 +181,7 @@ TRACE_EVENT(rcu_grace_period_init, * "start": Started a real expedited grace period. * "reset": Started resetting the tree * "select": Started selecting the CPUs to wait on. + * "selectofl": Selected CPU partially offline. * "startwait": Started waiting on selected CPUs. * "end": Ended a real expedited grace period. * "endwake": Woke piggybackers up. |