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rcu: provide rcu_virt_note_context_switch() function.

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Provide rcu_virt_note_context_switch() for vitalization use to note
quiescent state during guest entry.

Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
This commit is contained in:
Gleb Natapov 2011-05-04 16:31:03 +03:00 • committed by Paul E. McKenney
parent bad6e1393c
commit 29ce831000
3 changed files with 19 additions and 0 deletions
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8
include/linux/rcutiny.h
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@ -99,6 +99,14 @@ static inline void rcu_note_context_switch(int cpu)
rcu_preempt_note_context_switch();
}
/*
* Take advantage of the fact that there is only one CPU, which
* allows us to ignore virtualization-based context switches.
*/
static inline void rcu_virt_note_context_switch(int cpu)
{
}
/*
* Return the number of grace periods.
*/