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| author | Paul E. McKenney <paul.mckenney@linaro.org> | 2012-06-21 18:54:10 +0200 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2012-09-23 16:41:53 +0200 |
| commit | bfa00b4c4028f39357d16279ff0fddf550241593 (patch) | |
| tree | 81f7ba2a050d2ddb033bf690ade41052a866d7fb /kernel/rcutree_plugin.h | |
| parent | rcu: Break up rcu_gp_kthread() into subfunctions (diff) | |
| download | linux-bfa00b4c4028f39357d16279ff0fddf550241593.tar.xz linux-bfa00b4c4028f39357d16279ff0fddf550241593.zip | |
rcu: Prevent offline CPUs from executing RCU core code
Earlier versions of RCU invoked the RCU core from the CPU_DYING notifier
in order to note a quiescent state for the outgoing CPU. Because the
CPU is marked "offline" during the execution of the CPU_DYING notifiers,
the RCU core had to tolerate being invoked from an offline CPU. However,
commit b1420f1c (Make rcu_barrier() less disruptive) left only tracing
code in the CPU_DYING notifier, so the RCU core need no longer execute
on offline CPUs. This commit therefore enforces this restriction.
Signed-off-by: Paul E. McKenney <paul.mckenney@linaro.org>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Diffstat (limited to 'kernel/rcutree_plugin.h')
0 files changed, 0 insertions, 0 deletions