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rcutorture: Check from beginning to end of grace period

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Currently, rcutorture's Reader Batch checks measure from the end of
the previous grace period to the end of the current one.  This commit
tightens up these checks by measuring from the start and end of the same
grace period.  This involves adding rcu_batches_started() and friends
corresponding to the existing rcu_batches_completed() and friends.

We leave SRCU alone for the moment, as it does not yet have a way of
tracking both ends of its grace periods.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
This commit is contained in:
Paul E. McKenney 2014-11-21 17:10:16 -08:00
parent f9103c3902
commit 917963d0b3
5 changed files with 95 additions and 43 deletions
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30
include/linux/rcutiny.h
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@ -92,7 +92,31 @@ static inline void rcu_virt_note_context_switch(int cpu)
}
/*
* Return the number of grace periods.
* Return the number of grace periods started.
*/
static inline unsigned long rcu_batches_started(void)
{
return 0;
}
/*
* Return the number of bottom-half grace periods started.
*/
static inline unsigned long rcu_batches_started_bh(void)
{
return 0;
}
/*
* Return the number of sched grace periods started.
*/
static inline unsigned long rcu_batches_started_sched(void)
{
return 0;
}
/*
* Return the number of grace periods completed.
*/
static inline unsigned long rcu_batches_completed(void)
{
@ -100,7 +124,7 @@ static inline unsigned long rcu_batches_completed(void)
}
/*
* Return the number of bottom-half grace periods.
* Return the number of bottom-half grace periods completed.
*/
static inline unsigned long rcu_batches_completed_bh(void)
{
@ -108,7 +132,7 @@ static inline unsigned long rcu_batches_completed_bh(void)
}
/*
* Return the number of sched grace periods.
* Return the number of sched grace periods completed.
*/
static inline unsigned long rcu_batches_completed_sched(void)
{