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| author |   Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2011-10-02 17:21:18 -0700 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2011-12-11 10:31:26 -0800 |
| commit | 2c01531f08f8ba663a20d8472a3032f6df133b6e (patch) | |
| tree | 3a6c5ce1fc95258e5431968a0011f6e80f3c431e /kernel/rcupdate.c | |
| parent | rcu: Add failure tracing to rcutorture (diff) | |
| download | linux-dev-2c01531f08f8ba663a20d8472a3032f6df133b6e.tar.xz linux-dev-2c01531f08f8ba663a20d8472a3032f6df133b6e.zip | |
rcu: Document failing tick as cause of RCU CPU stall warning
One of lclaudio's systems was seeing RCU CPU stall warnings from idle.
These turned out to be caused by a bug that stopped scheduling-clock
tick interrupts from being sent to a given CPU for several hundred seconds.
This commit therefore updates the documentation to call this out as a
possible cause for RCU CPU stall warnings.
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Diffstat (limited to 'kernel/rcupdate.c')
0 files changed, 0 insertions, 0 deletions