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authorPaul E. McKenney <paul.mckenney@linaro.org>2012-09-21 16:35:25 -0700
committerPaul E. McKenney <paulmck@linux.vnet.ibm.com>2012-10-23 14:55:27 -0700
commit53bb857c373d6b7936f8a7b4451f0a99703c308e (patch)
tree946633c0cbb9ae3a4b374f6896cc9cf5544f0a4a /Documentation/RCU/whatisRCU.txt
parenteee058826100e5a344f11601e0c47baeaf07c77b (diff)
downloadlinux-linaro-stable-53bb857c373d6b7936f8a7b4451f0a99703c308e.tar.gz
rcu: Dump number of callbacks in stall warning messages
In theory, if a grace period manages to get started despite there being no callbacks on any of the CPUs, all CPUs could go into dyntick-idle mode, so that the grace period would never end. This commit updates the RCU CPU stall warning messages to detect this condition by summing up the number of callbacks on all CPUs. Signed-off-by: Paul E. McKenney <paul.mckenney@linaro.org> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Diffstat (limited to 'Documentation/RCU/whatisRCU.txt')
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