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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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10
include/linux/rcutree.h
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@ -35,6 +35,16 @@ extern void rcu_note_context_switch(int cpu);
extern int rcu_needs_cpu(int cpu);
extern void rcu_cpu_stall_reset(void);
/*
* Note a virtualization-based context switch. This is simply a
* wrapper around rcu_note_context_switch(), which allows TINY_RCU
* to save a few bytes.
*/
static inline void rcu_virt_note_context_switch(int cpu)
{
rcu_note_context_switch(cpu);
}
#ifdef CONFIG_TREE_PREEMPT_RCU
extern void exit_rcu(void);