mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-12 13:55:32 +00:00
rcutorture: Add task's CPU for rcutorture writer stalls
It appears that at least some of the rcutorture writer stall messages coincide with unusually long CPU-online operations, for example, no fewer than 205 seconds in a recent test. It is of course possible that the writer stall is not unrelated to this unusually long CPU-hotplug operation, and so this commit adds the rcutorture writer task's CPU to the stall message to gain more information about this possible connection. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
This commit is contained in:
parent
c234ee4b82
commit
808de39cf4
1 changed files with 3 additions and 2 deletions
|
@ -1319,11 +1319,12 @@ rcu_torture_stats_print(void)
|
|||
srcutorture_get_gp_data(cur_ops->ttype, srcu_ctlp,
|
||||
&flags, &gpnum, &completed);
|
||||
wtp = READ_ONCE(writer_task);
|
||||
pr_alert("??? Writer stall state %s(%d) g%lu c%lu f%#x ->state %#lx\n",
|
||||
pr_alert("??? Writer stall state %s(%d) g%lu c%lu f%#x ->state %#lx cpu %d\n",
|
||||
rcu_torture_writer_state_getname(),
|
||||
rcu_torture_writer_state,
|
||||
gpnum, completed, flags,
|
||||
wtp == NULL ? ~0UL : wtp->state);
|
||||
wtp == NULL ? ~0UL : wtp->state,
|
||||
wtp == NULL ? -1 : (int)task_cpu(wtp));
|
||||
show_rcu_gp_kthreads();
|
||||
rcu_ftrace_dump(DUMP_ALL);
|
||||
}
|
||||
|
|
Loading…
Reference in a new issue