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| author | Paul E. McKenney <paulmck@linux.ibm.com> | 2018-12-12 12:32:06 -0800 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.ibm.com> | 2019-01-25 15:29:59 -0800 |
| commit | 2ccaff10f71307ad4f75ce673b815d3fe6254e3d (patch) | |
| tree | 9d6d8064a44db829f879802af697a13a49868074 /tools/perf/scripts/python/check-perf-trace.py | |
| parent | 3b6505fd8eb86e3ef5ce12b34fe81e9edeb84475 (diff) | |
rcu: Add sysrq rcu_node-dump capability
Life is hard if RCU manages to get stuck without triggering RCU CPU
stall warnings or triggering the rcu_check_gp_start_stall() checks
for failing to start a grace period. This commit therefore adds a
boot-time-selectable sysrq key (commandeering "y") that allows manually
dumping Tree RCU state. The new rcutree.sysrq_rcu kernel boot parameter
must be set for this sysrq to be available.
Signed-off-by: Paul E. McKenney <paulmck@linux.ibm.com>
Diffstat (limited to 'tools/perf/scripts/python/check-perf-trace.py')
0 files changed, 0 insertions, 0 deletions