rcutorture: Dump writer stack if stalled

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Right now, rcutorture warns if an rcu_torture_writer() kthread stalls,
but this warning is not always all that helpful.  This commit therefore
makes the first such warning include a stack dump.

This in turn requires that sched_show_task() be exported to GPL modules,
so this commit makes that change as well.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>

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This commit is contained in:

Paul E. McKenney 2017-08-30 10:40:17 -07:00

parent 2b1516e55f

commit 0032f4e889

2 changed files with 7 additions and 0 deletions

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6

kernel/rcu/rcutorture.c

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1

kernel/sched/core.c

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