rcu-tasks: Add stall warnings for RCU Tasks Trace

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This commit adds RCU CPU stall warnings for RCU Tasks Trace.  These
dump out any tasks blocking the current grace period, as well as any
CPUs that have not responded to an IPI request.  This happens in two
phases, when initially extracting state from the tasks and later when
waiting for any holdout tasks to check in.

Signed-off-by: Paul E. McKenney <paulmck@kernel.org>

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Paul E. McKenney 2020-03-10 12:13:53 -07:00

parent c1a76c0b6a

commit 4593e772b5

1 changed files with 66 additions and 4 deletions

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kernel/rcu/tasks.h

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