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rcu: Remove obsolete comment from __call_rcu()

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The __call_rcu() comment about opportunistically noting grace period
beginnings and endings is obsolete.  RCU still does such opportunistic
noting, but in __call_rcu_core() rather than __call_rcu(), and there
already is an appropriate comment in __call_rcu_core().  This commit
therefore removes the obsolete comment.

Reported-by: Michalis Kokologiannakis <mixaskok@gmail.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
This commit is contained in:
Paul E. McKenney 2016-09-01 05:15:53 -07:00
parent 5403d367a7
commit 1f21b50b77
1 changed files with 0 additions and 7 deletions
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7
kernel/rcu/tree.c
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@ -3131,13 +3131,6 @@ __call_rcu(struct rcu_head *head, rcu_callback_t func,
}
head->func = func;
head->next = NULL;
/*
* Opportunistically note grace-period endings and beginnings.
* Note that we might see a beginning right after we see an
* end, but never vice versa, since this CPU has to pass through
* a quiescent state betweentimes.
*/
local_irq_save(flags);
rdp = this_cpu_ptr(rsp->rda);