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(parent: 1f3ebc8) | patch
rcu: Add kernel parameter to dump trace after RCU CPU stall warning
authorPaul E. McKenney <paulmck@linux.ibm.com>
Thu, 13 Jun 2019 22:30:49 +0000 (15:30 -0700)
committerPaul E. McKenney <paulmck@linux.ibm.com>
Thu, 1 Aug 2019 21:05:51 +0000 (14:05 -0700)
commitcdc694b2359d52cd6d0465d5a6263d97c786fb0c
treeb23b91ce2d46cfbbb52f2bcd546cc1c471adb662tree | snapshot
parent1f3ebc8253ee56bfaa883c5114fb5569c56f6197commit | diff
rcu: Add kernel parameter to dump trace after RCU CPU stall warning

This commit adds a rcu_cpu_stall_ftrace_dump kernel boot parameter, that,
when set, causes the trace buffer to be dumped after an RCU CPU stall
warning is printed.  This kernel boot parameter is disabled by default,
maintaining compatibility with previous behavior.

Signed-off-by: Paul E. McKenney <paulmck@linux.ibm.com>
Documentation/admin-guide/kernel-parameters.txt diff | blob | history
kernel/rcu/rcu.h diff | blob | history
kernel/rcu/tree_stall.h diff | blob | history
kernel/rcu/update.c diff | blob | history
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