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rcu: Provide rcu_barrier_cb_is_done() to check rcu_barrier() CBs

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This commit provides a rcu_barrier_cb_is_done() function that returns
true if the *rcu_barrier*() callback passed in is done.  This will be
used when printing grace-period debugging information.

Signed-off-by: "Paul E. McKenney" <paulmck@kernel.org>
Signed-off-by: Neeraj Upadhyay <neeraj.upadhyay@kernel.org>
This commit is contained in:
Paul E. McKenney 2024-08-01 17:34:23 -07:00 committed by Neeraj Upadhyay
parent 522295774d
commit 54973cdd16
1 changed files with 5 additions and 0 deletions
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5
kernel/rcu/rcu.h
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@ -255,6 +255,11 @@ static inline void debug_rcu_head_callback(struct rcu_head *rhp)
kmem_dump_obj(rhp);
}
static inline bool rcu_barrier_cb_is_done(struct rcu_head *rhp)
{
return rhp->next == rhp;
}
extern int rcu_cpu_stall_suppress_at_boot;
static inline bool rcu_stall_is_suppressed_at_boot(void)