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Message-Id: <1479142633-15315-3-git-send-email-paulmck@linux.vnet.ibm.com>
Date: Mon, 14 Nov 2016 08:57:09 -0800
From: "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
To: linux-kernel@...r.kernel.org
Cc: mingo@...nel.org, jiangshanlai@...il.com, dipankar@...ibm.com,
akpm@...ux-foundation.org, mathieu.desnoyers@...icios.com,
josh@...htriplett.org, tglx@...utronix.de, peterz@...radead.org,
rostedt@...dmis.org, dhowells@...hat.com, edumazet@...gle.com,
dvhart@...ux.intel.com, fweisbec@...il.com, oleg@...hat.com,
bobby.prani@...il.com,
"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
Subject: [PATCH tip/core/rcu 3/7] rcu: Remove obsolete comment from __call_rcu()
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beginnings and endings is obsolete.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@...il.com>
Signed-off-by: Paul E. McKenney <paulmck@...ux.vnet.ibm.com>
---
kernel/rcu/tree.c | 7 -------
1 file changed, 7 deletions(-)
diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c
index d52780024f9f..865af187498e 100644
--- a/kernel/rcu/tree.c
+++ b/kernel/rcu/tree.c
@@ -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);
--
2.5.2
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